90 Wrangler YJ needs Rear Main Seal
Ok,
I'm hoping to get some quick advice on replacing the rear main seal in my 90 wrangler. I've got the 258 - 4.2L engine with manual transmission. I've been trying to determine where my oil leak is and have determined with some help that its the Rear Main Seal leaking. How hard is it to replace this? And I know looking up the part for it, it asks if its the 1 piece or 2 piece seal which if I'm looking at things right I think with the setup I have its the 1 piece seal. Can anyone verify that for me and let me know what type of nightmare it is going to be to replace that? Thanks. |
Re: 90 Wrangler YJ needs Rear Main Seal
First thing you will hear from most others in this group is that your
problem is more likely the valve cover gasket. (Maybe you have already heard it) Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must remove the oil pan. The passenger side motor mount on my CJ had to be removed. -- JimG 80' CJ-7 258 CID, HEI 4.56 Gears, Lock-Right F&R 35" BFG MT on 15x10 Centerlines D44 Rear, D30 Front. SOA Dana 300 w/4:1 & Currie twin sticks Warn X8000i w/ dual batteries 00' TJ Sport 4.0L, 5sp 4.56 Gears, TrueTrac rear 33" BFG AT on 15x8 Eagle Alloys D35 Rear, D30 Front. 3" Suspension Lift Warn X8000i "NewbieJeepGuy" wrote in message... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
First thing you will hear from most others in this group is that your
problem is more likely the valve cover gasket. (Maybe you have already heard it) Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must remove the oil pan. The passenger side motor mount on my CJ had to be removed. -- JimG 80' CJ-7 258 CID, HEI 4.56 Gears, Lock-Right F&R 35" BFG MT on 15x10 Centerlines D44 Rear, D30 Front. SOA Dana 300 w/4:1 & Currie twin sticks Warn X8000i w/ dual batteries 00' TJ Sport 4.0L, 5sp 4.56 Gears, TrueTrac rear 33" BFG AT on 15x8 Eagle Alloys D35 Rear, D30 Front. 3" Suspension Lift Warn X8000i "NewbieJeepGuy" wrote in message... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
First thing you will hear from most others in this group is that your
problem is more likely the valve cover gasket. (Maybe you have already heard it) Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must remove the oil pan. The passenger side motor mount on my CJ had to be removed. -- JimG 80' CJ-7 258 CID, HEI 4.56 Gears, Lock-Right F&R 35" BFG MT on 15x10 Centerlines D44 Rear, D30 Front. SOA Dana 300 w/4:1 & Currie twin sticks Warn X8000i w/ dual batteries 00' TJ Sport 4.0L, 5sp 4.56 Gears, TrueTrac rear 33" BFG AT on 15x8 Eagle Alloys D35 Rear, D30 Front. 3" Suspension Lift Warn X8000i "NewbieJeepGuy" wrote in message... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
First thing you will hear from most others in this group is that your
problem is more likely the valve cover gasket. (Maybe you have already heard it) Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must remove the oil pan. The passenger side motor mount on my CJ had to be removed. -- JimG 80' CJ-7 258 CID, HEI 4.56 Gears, Lock-Right F&R 35" BFG MT on 15x10 Centerlines D44 Rear, D30 Front. SOA Dana 300 w/4:1 & Currie twin sticks Warn X8000i w/ dual batteries 00' TJ Sport 4.0L, 5sp 4.56 Gears, TrueTrac rear 33" BFG AT on 15x8 Eagle Alloys D35 Rear, D30 Front. 3" Suspension Lift Warn X8000i "NewbieJeepGuy" wrote in message... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
JimG said it:
FWIW, I found the bolts for the valve cover on my '89 YJ 4.2 finger tight. Torqued them and my rear main seal leak was gone. Joe "JimG" <JimG@nospam.com> wrote in message news:drsvh.1538$B25.1416@news01.roc.ny... > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
JimG said it:
FWIW, I found the bolts for the valve cover on my '89 YJ 4.2 finger tight. Torqued them and my rear main seal leak was gone. Joe "JimG" <JimG@nospam.com> wrote in message news:drsvh.1538$B25.1416@news01.roc.ny... > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
JimG said it:
FWIW, I found the bolts for the valve cover on my '89 YJ 4.2 finger tight. Torqued them and my rear main seal leak was gone. Joe "JimG" <JimG@nospam.com> wrote in message news:drsvh.1538$B25.1416@news01.roc.ny... > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
JimG said it:
FWIW, I found the bolts for the valve cover on my '89 YJ 4.2 finger tight. Torqued them and my rear main seal leak was gone. Joe "JimG" <JimG@nospam.com> wrote in message news:drsvh.1538$B25.1416@news01.roc.ny... > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
I've done this 3 or 4 times, the folks at AutoZone kept giving me the
double-lip seal and it kept leaking. My '88 has a single-lip 2-piece seal, though visually I simply can't tell the difference between the double and single lip versions (other than the color of the rubber). You're looking for Fel-Pro gasket part # BS13879 (I'm almost positive, if it's not that it's something close.) The biggest trouble you'll have is reinstalling the top half - the instructions say to use liquid soap to lube it up, but I ended up putting a coat of lithium grease on the thing, then dunking it in the motor oil I'd drained out of the pan. Use a screwdriver to compress the side of the top seal as you push it in with your fingers to keep from shredding the outside of it on the block.. If you've never done this before it's good to have a backup seal just in case you do shred it. Take your time and wear eye protection, oil will drip off your crankshaft and into your eyes. The lower half of the seal just Other than that it's a very straightforward operation, all you have to do is unbolt your starter (I just let the thing hang on a piece of rope so I wouldn't have to undo all the wiring to it) and then undo 20 or 30 7/16" bolts around the oil pan to get at the thing. The obligatory Jeep group statement on leaking 258's: Check Your Valve Cover Gasket. 99% of the time, due partially to the downward slant of the engine, oil will leak out of the back of your valve cover, run down the engine, and fall on the ground between engine and tranny, causing you to believe your RMS is bad. Stuff a rag between the back of your block and your firewall. If it has oil on it, you've found a leak. It might not be a bad idea just to replace the VC gasket first, since the part costs no more than $5 and is simple to replace. This can also happen with your valve cover (PCV) grommets getting old and dry - oil can leak out of them and down the back of your block. That being said, if it *is* your rear main seal, check your timing chain while you've got the oil pan out. If it moves more than an inch or so with just your finger, you may as well replace it while you're in there. If you run into problems, send me an e-mail. I could probably do a rear main seal in a 258 blindfolded. Good luck. On Jan 29, 2:04 pm, "JimG" <J...@nospam.com> wrote: > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > Thanks. |
Re: 90 Wrangler YJ needs Rear Main Seal
I've done this 3 or 4 times, the folks at AutoZone kept giving me the
double-lip seal and it kept leaking. My '88 has a single-lip 2-piece seal, though visually I simply can't tell the difference between the double and single lip versions (other than the color of the rubber). You're looking for Fel-Pro gasket part # BS13879 (I'm almost positive, if it's not that it's something close.) The biggest trouble you'll have is reinstalling the top half - the instructions say to use liquid soap to lube it up, but I ended up putting a coat of lithium grease on the thing, then dunking it in the motor oil I'd drained out of the pan. Use a screwdriver to compress the side of the top seal as you push it in with your fingers to keep from shredding the outside of it on the block.. If you've never done this before it's good to have a backup seal just in case you do shred it. Take your time and wear eye protection, oil will drip off your crankshaft and into your eyes. The lower half of the seal just Other than that it's a very straightforward operation, all you have to do is unbolt your starter (I just let the thing hang on a piece of rope so I wouldn't have to undo all the wiring to it) and then undo 20 or 30 7/16" bolts around the oil pan to get at the thing. The obligatory Jeep group statement on leaking 258's: Check Your Valve Cover Gasket. 99% of the time, due partially to the downward slant of the engine, oil will leak out of the back of your valve cover, run down the engine, and fall on the ground between engine and tranny, causing you to believe your RMS is bad. Stuff a rag between the back of your block and your firewall. If it has oil on it, you've found a leak. It might not be a bad idea just to replace the VC gasket first, since the part costs no more than $5 and is simple to replace. This can also happen with your valve cover (PCV) grommets getting old and dry - oil can leak out of them and down the back of your block. That being said, if it *is* your rear main seal, check your timing chain while you've got the oil pan out. If it moves more than an inch or so with just your finger, you may as well replace it while you're in there. If you run into problems, send me an e-mail. I could probably do a rear main seal in a 258 blindfolded. Good luck. On Jan 29, 2:04 pm, "JimG" <J...@nospam.com> wrote: > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > Thanks. |
Re: 90 Wrangler YJ needs Rear Main Seal
I've done this 3 or 4 times, the folks at AutoZone kept giving me the
double-lip seal and it kept leaking. My '88 has a single-lip 2-piece seal, though visually I simply can't tell the difference between the double and single lip versions (other than the color of the rubber). You're looking for Fel-Pro gasket part # BS13879 (I'm almost positive, if it's not that it's something close.) The biggest trouble you'll have is reinstalling the top half - the instructions say to use liquid soap to lube it up, but I ended up putting a coat of lithium grease on the thing, then dunking it in the motor oil I'd drained out of the pan. Use a screwdriver to compress the side of the top seal as you push it in with your fingers to keep from shredding the outside of it on the block.. If you've never done this before it's good to have a backup seal just in case you do shred it. Take your time and wear eye protection, oil will drip off your crankshaft and into your eyes. The lower half of the seal just Other than that it's a very straightforward operation, all you have to do is unbolt your starter (I just let the thing hang on a piece of rope so I wouldn't have to undo all the wiring to it) and then undo 20 or 30 7/16" bolts around the oil pan to get at the thing. The obligatory Jeep group statement on leaking 258's: Check Your Valve Cover Gasket. 99% of the time, due partially to the downward slant of the engine, oil will leak out of the back of your valve cover, run down the engine, and fall on the ground between engine and tranny, causing you to believe your RMS is bad. Stuff a rag between the back of your block and your firewall. If it has oil on it, you've found a leak. It might not be a bad idea just to replace the VC gasket first, since the part costs no more than $5 and is simple to replace. This can also happen with your valve cover (PCV) grommets getting old and dry - oil can leak out of them and down the back of your block. That being said, if it *is* your rear main seal, check your timing chain while you've got the oil pan out. If it moves more than an inch or so with just your finger, you may as well replace it while you're in there. If you run into problems, send me an e-mail. I could probably do a rear main seal in a 258 blindfolded. Good luck. On Jan 29, 2:04 pm, "JimG" <J...@nospam.com> wrote: > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > Thanks. |
Re: 90 Wrangler YJ needs Rear Main Seal
I've done this 3 or 4 times, the folks at AutoZone kept giving me the
double-lip seal and it kept leaking. My '88 has a single-lip 2-piece seal, though visually I simply can't tell the difference between the double and single lip versions (other than the color of the rubber). You're looking for Fel-Pro gasket part # BS13879 (I'm almost positive, if it's not that it's something close.) The biggest trouble you'll have is reinstalling the top half - the instructions say to use liquid soap to lube it up, but I ended up putting a coat of lithium grease on the thing, then dunking it in the motor oil I'd drained out of the pan. Use a screwdriver to compress the side of the top seal as you push it in with your fingers to keep from shredding the outside of it on the block.. If you've never done this before it's good to have a backup seal just in case you do shred it. Take your time and wear eye protection, oil will drip off your crankshaft and into your eyes. The lower half of the seal just Other than that it's a very straightforward operation, all you have to do is unbolt your starter (I just let the thing hang on a piece of rope so I wouldn't have to undo all the wiring to it) and then undo 20 or 30 7/16" bolts around the oil pan to get at the thing. The obligatory Jeep group statement on leaking 258's: Check Your Valve Cover Gasket. 99% of the time, due partially to the downward slant of the engine, oil will leak out of the back of your valve cover, run down the engine, and fall on the ground between engine and tranny, causing you to believe your RMS is bad. Stuff a rag between the back of your block and your firewall. If it has oil on it, you've found a leak. It might not be a bad idea just to replace the VC gasket first, since the part costs no more than $5 and is simple to replace. This can also happen with your valve cover (PCV) grommets getting old and dry - oil can leak out of them and down the back of your block. That being said, if it *is* your rear main seal, check your timing chain while you've got the oil pan out. If it moves more than an inch or so with just your finger, you may as well replace it while you're in there. If you run into problems, send me an e-mail. I could probably do a rear main seal in a 258 blindfolded. Good luck. On Jan 29, 2:04 pm, "JimG" <J...@nospam.com> wrote: > First thing you will hear from most others in this group is that your > problem is more likely the valve cover gasket. (Maybe you have already heard > it) > > Mine (80 CJ) was a 2 piece seal... not that hard to replace. You must > remove the oil pan. The passenger side motor mount on my CJ had to be > removed. > > -- > JimG > 80' CJ-7 258 CID, HEI > 4.56 Gears, Lock-Right F&R > 35" BFG MT on 15x10 Centerlines > D44 Rear, D30 Front. SOA > Dana 300 w/4:1 & Currie twin sticks > Warn X8000i w/ dual batteries > > 00' TJ Sport 4.0L, 5sp > 4.56 Gears, TrueTrac rear > 33" BFG AT on 15x8 Eagle Alloys > D35 Rear, D30 Front. 3" Suspension Lift > Warn X8000i > > "NewbieJeepGuy" wrote in message... > > Ok, > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > Thanks. |
Re: 90 Wrangler YJ needs Rear Main Seal
It's not hard to replace, but the odds favor the valve cover gasket as the
actual failure point. My CJ5 with the 258 uses the two-piece rear main. "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
It's not hard to replace, but the odds favor the valve cover gasket as the
actual failure point. My CJ5 with the 258 uses the two-piece rear main. "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
It's not hard to replace, but the odds favor the valve cover gasket as the
actual failure point. My CJ5 with the 258 uses the two-piece rear main. "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
It's not hard to replace, but the odds favor the valve cover gasket as the
actual failure point. My CJ5 with the 258 uses the two-piece rear main. "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
Hey Jeff,
Another donor to both the Jeep and BMW boards huh? Joe C '89 YJ 4.2 5spd '02 325CI 5spd "Jeff Strickland" <crwlr@verizon.net> wrote in message news:jBtvh.1062$Ss1.700@trnddc07... > It's not hard to replace, but the odds favor the valve cover gasket as the > actual failure point. > > My CJ5 with the 258 uses the two-piece rear main. > > > > "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message > news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
Hey Jeff,
Another donor to both the Jeep and BMW boards huh? Joe C '89 YJ 4.2 5spd '02 325CI 5spd "Jeff Strickland" <crwlr@verizon.net> wrote in message news:jBtvh.1062$Ss1.700@trnddc07... > It's not hard to replace, but the odds favor the valve cover gasket as the > actual failure point. > > My CJ5 with the 258 uses the two-piece rear main. > > > > "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message > news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
Hey Jeff,
Another donor to both the Jeep and BMW boards huh? Joe C '89 YJ 4.2 5spd '02 325CI 5spd "Jeff Strickland" <crwlr@verizon.net> wrote in message news:jBtvh.1062$Ss1.700@trnddc07... > It's not hard to replace, but the odds favor the valve cover gasket as the > actual failure point. > > My CJ5 with the 258 uses the two-piece rear main. > > > > "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message > news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
Hey Jeff,
Another donor to both the Jeep and BMW boards huh? Joe C '89 YJ 4.2 5spd '02 325CI 5spd "Jeff Strickland" <crwlr@verizon.net> wrote in message news:jBtvh.1062$Ss1.700@trnddc07... > It's not hard to replace, but the odds favor the valve cover gasket as the > actual failure point. > > My CJ5 with the 258 uses the two-piece rear main. > > > > "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message > news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > > Ok, > > > > I'm hoping to get some quick advice on replacing the rear main seal in > > my 90 wrangler. I've got the 258 - 4.2L engine with manual > > transmission. I've been trying to determine where my oil leak is and > > have determined with some help that its the Rear Main Seal leaking. > > How hard is it to replace this? And I know looking up the part for > > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > > things right I think with the setup I have its the 1 piece seal. Can > > anyone verify that for me and let me know what type of nightmare it is > > going to be to replace that? > > > > Thanks. > > > |
Re: 90 Wrangler YJ needs Rear Main Seal
I just did the one in my '87. It was the rear main. I replaced the valve
cover gasket too, but the rear main was the culprit in my leak. It was hard and brittle, and I had to loosen all the main caps to get the upper part to budge. I've done lots of rear mains, this one was easy. Get the good Felpro gaskets, and save yourself some trouble. Be sure to use plenty of lube or lithium grease on the new seal as you install it, and, the lip goes toward the front of the engine. Spdloader "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
I just did the one in my '87. It was the rear main. I replaced the valve
cover gasket too, but the rear main was the culprit in my leak. It was hard and brittle, and I had to loosen all the main caps to get the upper part to budge. I've done lots of rear mains, this one was easy. Get the good Felpro gaskets, and save yourself some trouble. Be sure to use plenty of lube or lithium grease on the new seal as you install it, and, the lip goes toward the front of the engine. Spdloader "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
I just did the one in my '87. It was the rear main. I replaced the valve
cover gasket too, but the rear main was the culprit in my leak. It was hard and brittle, and I had to loosen all the main caps to get the upper part to budge. I've done lots of rear mains, this one was easy. Get the good Felpro gaskets, and save yourself some trouble. Be sure to use plenty of lube or lithium grease on the new seal as you install it, and, the lip goes toward the front of the engine. Spdloader "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
I just did the one in my '87. It was the rear main. I replaced the valve
cover gasket too, but the rear main was the culprit in my leak. It was hard and brittle, and I had to loosen all the main caps to get the upper part to budge. I've done lots of rear mains, this one was easy. Get the good Felpro gaskets, and save yourself some trouble. Be sure to use plenty of lube or lithium grease on the new seal as you install it, and, the lip goes toward the front of the engine. Spdloader "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
Yes.
"Joe C" <no-more-spam@no-spam.com> wrote in message news:nQtvh.4518$635.24@trndny05... > Hey Jeff, > Another donor to both the Jeep and BMW boards huh? > Joe C > '89 YJ 4.2 5spd > '02 325CI 5spd > > "Jeff Strickland" <crwlr@verizon.net> wrote in message > news:jBtvh.1062$Ss1.700@trnddc07... >> It's not hard to replace, but the odds favor the valve cover gasket as >> the >> actual failure point. >> >> My CJ5 with the 258 uses the two-piece rear main. >> >> >> >> "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message >> news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... >> > Ok, >> > >> > I'm hoping to get some quick advice on replacing the rear main seal in >> > my 90 wrangler. I've got the 258 - 4.2L engine with manual >> > transmission. I've been trying to determine where my oil leak is and >> > have determined with some help that its the Rear Main Seal leaking. >> > How hard is it to replace this? And I know looking up the part for >> > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at >> > things right I think with the setup I have its the 1 piece seal. Can >> > anyone verify that for me and let me know what type of nightmare it is >> > going to be to replace that? >> > >> > Thanks. >> > >> > > |
Re: 90 Wrangler YJ needs Rear Main Seal
Yes.
"Joe C" <no-more-spam@no-spam.com> wrote in message news:nQtvh.4518$635.24@trndny05... > Hey Jeff, > Another donor to both the Jeep and BMW boards huh? > Joe C > '89 YJ 4.2 5spd > '02 325CI 5spd > > "Jeff Strickland" <crwlr@verizon.net> wrote in message > news:jBtvh.1062$Ss1.700@trnddc07... >> It's not hard to replace, but the odds favor the valve cover gasket as >> the >> actual failure point. >> >> My CJ5 with the 258 uses the two-piece rear main. >> >> >> >> "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message >> news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... >> > Ok, >> > >> > I'm hoping to get some quick advice on replacing the rear main seal in >> > my 90 wrangler. I've got the 258 - 4.2L engine with manual >> > transmission. I've been trying to determine where my oil leak is and >> > have determined with some help that its the Rear Main Seal leaking. >> > How hard is it to replace this? And I know looking up the part for >> > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at >> > things right I think with the setup I have its the 1 piece seal. Can >> > anyone verify that for me and let me know what type of nightmare it is >> > going to be to replace that? >> > >> > Thanks. >> > >> > > |
Re: 90 Wrangler YJ needs Rear Main Seal
Yes.
"Joe C" <no-more-spam@no-spam.com> wrote in message news:nQtvh.4518$635.24@trndny05... > Hey Jeff, > Another donor to both the Jeep and BMW boards huh? > Joe C > '89 YJ 4.2 5spd > '02 325CI 5spd > > "Jeff Strickland" <crwlr@verizon.net> wrote in message > news:jBtvh.1062$Ss1.700@trnddc07... >> It's not hard to replace, but the odds favor the valve cover gasket as >> the >> actual failure point. >> >> My CJ5 with the 258 uses the two-piece rear main. >> >> >> >> "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message >> news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... >> > Ok, >> > >> > I'm hoping to get some quick advice on replacing the rear main seal in >> > my 90 wrangler. I've got the 258 - 4.2L engine with manual >> > transmission. I've been trying to determine where my oil leak is and >> > have determined with some help that its the Rear Main Seal leaking. >> > How hard is it to replace this? And I know looking up the part for >> > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at >> > things right I think with the setup I have its the 1 piece seal. Can >> > anyone verify that for me and let me know what type of nightmare it is >> > going to be to replace that? >> > >> > Thanks. >> > >> > > |
Re: 90 Wrangler YJ needs Rear Main Seal
Yes.
"Joe C" <no-more-spam@no-spam.com> wrote in message news:nQtvh.4518$635.24@trndny05... > Hey Jeff, > Another donor to both the Jeep and BMW boards huh? > Joe C > '89 YJ 4.2 5spd > '02 325CI 5spd > > "Jeff Strickland" <crwlr@verizon.net> wrote in message > news:jBtvh.1062$Ss1.700@trnddc07... >> It's not hard to replace, but the odds favor the valve cover gasket as >> the >> actual failure point. >> >> My CJ5 with the 258 uses the two-piece rear main. >> >> >> >> "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message >> news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... >> > Ok, >> > >> > I'm hoping to get some quick advice on replacing the rear main seal in >> > my 90 wrangler. I've got the 258 - 4.2L engine with manual >> > transmission. I've been trying to determine where my oil leak is and >> > have determined with some help that its the Rear Main Seal leaking. >> > How hard is it to replace this? And I know looking up the part for >> > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at >> > things right I think with the setup I have its the 1 piece seal. Can >> > anyone verify that for me and let me know what type of nightmare it is >> > going to be to replace that? >> > >> > Thanks. >> > >> > > |
Re: 90 Wrangler YJ needs Rear Main Seal
I vote valve cover.
http://www.neow.org/rms1.html http://tek-tonic.com/rearmainseal/ God Bless America, Bill 0|||||||0 mailto:-------------------- http://www.----------.com/ "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
I vote valve cover.
http://www.neow.org/rms1.html http://tek-tonic.com/rearmainseal/ God Bless America, Bill 0|||||||0 mailto:-------------------- http://www.----------.com/ "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
I vote valve cover.
http://www.neow.org/rms1.html http://tek-tonic.com/rearmainseal/ God Bless America, Bill 0|||||||0 mailto:-------------------- http://www.----------.com/ "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
I vote valve cover.
http://www.neow.org/rms1.html http://tek-tonic.com/rearmainseal/ God Bless America, Bill 0|||||||0 mailto:-------------------- http://www.----------.com/ "NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com... > Ok, > > I'm hoping to get some quick advice on replacing the rear main seal in > my 90 wrangler. I've got the 258 - 4.2L engine with manual > transmission. I've been trying to determine where my oil leak is and > have determined with some help that its the Rear Main Seal leaking. > How hard is it to replace this? And I know looking up the part for > it, it asks if its the 1 piece or 2 piece seal which if I'm looking at > things right I think with the setup I have its the 1 piece seal. Can > anyone verify that for me and let me know what type of nightmare it is > going to be to replace that? > > Thanks. > |
Re: 90 Wrangler YJ needs Rear Main Seal
Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the thing pretty much narrowed down to the rear main seal. Unless it can leak from somewhere else in back and make a few of us think its the Rear Main. Micah, thanks for all the info you put in and you stated that it is a 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ with the 258 4.2L engine in it and I was talking to a couple auto parts shops and they kept asking me if it had the 1 or 2 piece seal. I guess I got confused because to me with that year and engine it should be pretty straightforward which one it would be. So I need to look for the FEL-BS13879 part by Fel-Pro. I did a quick search and that states 2 piece Rear Main Seal application for the AMC/ International/Jeep 196-258 L6 engines. Now would you have any good instructions or reference to any on the net to print out while I tackle this fun project. I'm a computer person that is just getting into this jeep and engine stuff but know it will save me lots of money if I can do some basic or the easier stuff than going to the shop all the time. Thanks. ndittoo@yahoo.com |
Re: 90 Wrangler YJ needs Rear Main Seal
Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the thing pretty much narrowed down to the rear main seal. Unless it can leak from somewhere else in back and make a few of us think its the Rear Main. Micah, thanks for all the info you put in and you stated that it is a 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ with the 258 4.2L engine in it and I was talking to a couple auto parts shops and they kept asking me if it had the 1 or 2 piece seal. I guess I got confused because to me with that year and engine it should be pretty straightforward which one it would be. So I need to look for the FEL-BS13879 part by Fel-Pro. I did a quick search and that states 2 piece Rear Main Seal application for the AMC/ International/Jeep 196-258 L6 engines. Now would you have any good instructions or reference to any on the net to print out while I tackle this fun project. I'm a computer person that is just getting into this jeep and engine stuff but know it will save me lots of money if I can do some basic or the easier stuff than going to the shop all the time. Thanks. ndittoo@yahoo.com |
Re: 90 Wrangler YJ needs Rear Main Seal
Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the thing pretty much narrowed down to the rear main seal. Unless it can leak from somewhere else in back and make a few of us think its the Rear Main. Micah, thanks for all the info you put in and you stated that it is a 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ with the 258 4.2L engine in it and I was talking to a couple auto parts shops and they kept asking me if it had the 1 or 2 piece seal. I guess I got confused because to me with that year and engine it should be pretty straightforward which one it would be. So I need to look for the FEL-BS13879 part by Fel-Pro. I did a quick search and that states 2 piece Rear Main Seal application for the AMC/ International/Jeep 196-258 L6 engines. Now would you have any good instructions or reference to any on the net to print out while I tackle this fun project. I'm a computer person that is just getting into this jeep and engine stuff but know it will save me lots of money if I can do some basic or the easier stuff than going to the shop all the time. Thanks. ndittoo@yahoo.com |
Re: 90 Wrangler YJ needs Rear Main Seal
Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the thing pretty much narrowed down to the rear main seal. Unless it can leak from somewhere else in back and make a few of us think its the Rear Main. Micah, thanks for all the info you put in and you stated that it is a 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ with the 258 4.2L engine in it and I was talking to a couple auto parts shops and they kept asking me if it had the 1 or 2 piece seal. I guess I got confused because to me with that year and engine it should be pretty straightforward which one it would be. So I need to look for the FEL-BS13879 part by Fel-Pro. I did a quick search and that states 2 piece Rear Main Seal application for the AMC/ International/Jeep 196-258 L6 engines. Now would you have any good instructions or reference to any on the net to print out while I tackle this fun project. I'm a computer person that is just getting into this jeep and engine stuff but know it will save me lots of money if I can do some basic or the easier stuff than going to the shop all the time. Thanks. ndittoo@yahoo.com |
Re: 90 Wrangler YJ needs Rear Main Seal
FWIW: My parts manual for the '90 4.2L clearly shows a 2 piece rear main.
I know everyone has flogged the valve cover fix but most of us have needed several tries to get it right,and it does mimic a bad rear seal quite nicely. I power wash the back the engine at the local self serve car wash, then stuff a paper towel between the engine and the firewall. Any sign of oil after 30 minutes of driving says you don't have the valve cover right. NewbieJeepGuy wrote: > Thanks all for your help so far. I have replaced the Valve Cover > Gasket as suggested before posting this message and have gotten the > thing pretty much narrowed down to the rear main seal. Unless it can > leak from somewhere else in back and make a few of us think its the > Rear Main. > > Micah, thanks for all the info you put in and you stated that it is a > 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ > with the 258 4.2L engine in it and I was talking to a couple auto > parts shops and they kept asking me if it had the 1 or 2 piece seal. > I guess I got confused because to me with that year and engine it > should be pretty straightforward which one it would be. So I need to > look for the FEL-BS13879 part by Fel-Pro. I did a quick search and > that states 2 piece Rear Main Seal application for the AMC/ > International/Jeep 196-258 L6 engines. > > Now would you have any good instructions or reference to any on the > net to print out while I tackle this fun project. I'm a computer > person that is just getting into this jeep and engine stuff but know > it will save me lots of money if I can do some basic or the easier > stuff than going to the shop all the time. > > Thanks. > ndittoo@yahoo.com > |
Re: 90 Wrangler YJ needs Rear Main Seal
FWIW: My parts manual for the '90 4.2L clearly shows a 2 piece rear main.
I know everyone has flogged the valve cover fix but most of us have needed several tries to get it right,and it does mimic a bad rear seal quite nicely. I power wash the back the engine at the local self serve car wash, then stuff a paper towel between the engine and the firewall. Any sign of oil after 30 minutes of driving says you don't have the valve cover right. NewbieJeepGuy wrote: > Thanks all for your help so far. I have replaced the Valve Cover > Gasket as suggested before posting this message and have gotten the > thing pretty much narrowed down to the rear main seal. Unless it can > leak from somewhere else in back and make a few of us think its the > Rear Main. > > Micah, thanks for all the info you put in and you stated that it is a > 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ > with the 258 4.2L engine in it and I was talking to a couple auto > parts shops and they kept asking me if it had the 1 or 2 piece seal. > I guess I got confused because to me with that year and engine it > should be pretty straightforward which one it would be. So I need to > look for the FEL-BS13879 part by Fel-Pro. I did a quick search and > that states 2 piece Rear Main Seal application for the AMC/ > International/Jeep 196-258 L6 engines. > > Now would you have any good instructions or reference to any on the > net to print out while I tackle this fun project. I'm a computer > person that is just getting into this jeep and engine stuff but know > it will save me lots of money if I can do some basic or the easier > stuff than going to the shop all the time. > > Thanks. > ndittoo@yahoo.com > |
Re: 90 Wrangler YJ needs Rear Main Seal
FWIW: My parts manual for the '90 4.2L clearly shows a 2 piece rear main.
I know everyone has flogged the valve cover fix but most of us have needed several tries to get it right,and it does mimic a bad rear seal quite nicely. I power wash the back the engine at the local self serve car wash, then stuff a paper towel between the engine and the firewall. Any sign of oil after 30 minutes of driving says you don't have the valve cover right. NewbieJeepGuy wrote: > Thanks all for your help so far. I have replaced the Valve Cover > Gasket as suggested before posting this message and have gotten the > thing pretty much narrowed down to the rear main seal. Unless it can > leak from somewhere else in back and make a few of us think its the > Rear Main. > > Micah, thanks for all the info you put in and you stated that it is a > 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ > with the 258 4.2L engine in it and I was talking to a couple auto > parts shops and they kept asking me if it had the 1 or 2 piece seal. > I guess I got confused because to me with that year and engine it > should be pretty straightforward which one it would be. So I need to > look for the FEL-BS13879 part by Fel-Pro. I did a quick search and > that states 2 piece Rear Main Seal application for the AMC/ > International/Jeep 196-258 L6 engines. > > Now would you have any good instructions or reference to any on the > net to print out while I tackle this fun project. I'm a computer > person that is just getting into this jeep and engine stuff but know > it will save me lots of money if I can do some basic or the easier > stuff than going to the shop all the time. > > Thanks. > ndittoo@yahoo.com > |
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