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yj springs on a cj
All,
Does anyone have any insights on installing yj springs on a cj? I have a 1974 cj5 with a 304 and I would like to install yj springs with a moderate lift (2" or so) to improve the ride and handling on and off road. I am not interested in performing a spring over axle swap or a shackle reversal, but swapping out and moving the shackle mounts to accomodate the different springs. A companion question to the above is what brand of lift springs would be advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any experience with these brands? Thanks, Karl |
Re: yj springs on a cj
Don't do it man! The Civilian Jeep's spring multi pack are design
perfectly for axle wrap damping and bounce absorption. If you make the change, expect to break parts like this YJ: http://www.----------.com/d35snap.mov God Bless America, ßill O|||||||O mailto:-------------------- Karl Norrena wrote: > > All, > > Does anyone have any insights on installing yj springs on a cj? I have > a 1974 cj5 with a 304 and I would like to install yj springs with a > moderate lift (2" or so) to improve the ride and handling on and off > road. I am not interested in performing a spring over axle swap or a > shackle reversal, but swapping out and moving the shackle mounts to > accomodate the different springs. A companion question to the above is > what brand of lift springs would be advisable? I have in mind OME, > BDS, and superlift lift kits. Has anybody any experience with these > brands? > > Thanks, > > Karl |
Re: yj springs on a cj
Don't do it man! The Civilian Jeep's spring multi pack are design
perfectly for axle wrap damping and bounce absorption. If you make the change, expect to break parts like this YJ: http://www.----------.com/d35snap.mov God Bless America, ßill O|||||||O mailto:-------------------- Karl Norrena wrote: > > All, > > Does anyone have any insights on installing yj springs on a cj? I have > a 1974 cj5 with a 304 and I would like to install yj springs with a > moderate lift (2" or so) to improve the ride and handling on and off > road. I am not interested in performing a spring over axle swap or a > shackle reversal, but swapping out and moving the shackle mounts to > accomodate the different springs. A companion question to the above is > what brand of lift springs would be advisable? I have in mind OME, > BDS, and superlift lift kits. Has anybody any experience with these > brands? > > Thanks, > > Karl |
Re: yj springs on a cj
Don't do it man! The Civilian Jeep's spring multi pack are design
perfectly for axle wrap damping and bounce absorption. If you make the change, expect to break parts like this YJ: http://www.----------.com/d35snap.mov God Bless America, ßill O|||||||O mailto:-------------------- Karl Norrena wrote: > > All, > > Does anyone have any insights on installing yj springs on a cj? I have > a 1974 cj5 with a 304 and I would like to install yj springs with a > moderate lift (2" or so) to improve the ride and handling on and off > road. I am not interested in performing a spring over axle swap or a > shackle reversal, but swapping out and moving the shackle mounts to > accomodate the different springs. A companion question to the above is > what brand of lift springs would be advisable? I have in mind OME, > BDS, and superlift lift kits. Has anybody any experience with these > brands? > > Thanks, > > Karl |
Re: yj springs on a cj
Bill,
I have been lurking the newsgroup for awhile and I have read many of your posts and you usually have good advice, but I think the problem that the guy had in the video was just bad judgement and not a whole lot to do with springs. Could you enlighten me if there is something going on here that I dont see or understand? Karl On Sat, 22 Nov 2003 09:28:10 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote: > Don't do it man! The Civilian Jeep's spring multi pack are design >perfectly for axle wrap damping and bounce absorption. If you make the >change, expect to break parts like this YJ: >http://www.----------.com/d35snap.mov > God Bless America, ßill O|||||||O >mailto:-------------------- > >Karl Norrena wrote: >> >> All, >> >> Does anyone have any insights on installing yj springs on a cj? I have >> a 1974 cj5 with a 304 and I would like to install yj springs with a >> moderate lift (2" or so) to improve the ride and handling on and off >> road. I am not interested in performing a spring over axle swap or a >> shackle reversal, but swapping out and moving the shackle mounts to >> accomodate the different springs. A companion question to the above is >> what brand of lift springs would be advisable? I have in mind OME, >> BDS, and superlift lift kits. Has anybody any experience with these >> brands? >> >> Thanks, >> >> Karl |
Re: yj springs on a cj
Bill,
I have been lurking the newsgroup for awhile and I have read many of your posts and you usually have good advice, but I think the problem that the guy had in the video was just bad judgement and not a whole lot to do with springs. Could you enlighten me if there is something going on here that I dont see or understand? Karl On Sat, 22 Nov 2003 09:28:10 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote: > Don't do it man! The Civilian Jeep's spring multi pack are design >perfectly for axle wrap damping and bounce absorption. If you make the >change, expect to break parts like this YJ: >http://www.----------.com/d35snap.mov > God Bless America, ßill O|||||||O >mailto:-------------------- > >Karl Norrena wrote: >> >> All, >> >> Does anyone have any insights on installing yj springs on a cj? I have >> a 1974 cj5 with a 304 and I would like to install yj springs with a >> moderate lift (2" or so) to improve the ride and handling on and off >> road. I am not interested in performing a spring over axle swap or a >> shackle reversal, but swapping out and moving the shackle mounts to >> accomodate the different springs. A companion question to the above is >> what brand of lift springs would be advisable? I have in mind OME, >> BDS, and superlift lift kits. Has anybody any experience with these >> brands? >> >> Thanks, >> >> Karl |
Re: yj springs on a cj
Bill,
I have been lurking the newsgroup for awhile and I have read many of your posts and you usually have good advice, but I think the problem that the guy had in the video was just bad judgement and not a whole lot to do with springs. Could you enlighten me if there is something going on here that I dont see or understand? Karl On Sat, 22 Nov 2003 09:28:10 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote: > Don't do it man! The Civilian Jeep's spring multi pack are design >perfectly for axle wrap damping and bounce absorption. If you make the >change, expect to break parts like this YJ: >http://www.----------.com/d35snap.mov > God Bless America, ßill O|||||||O >mailto:-------------------- > >Karl Norrena wrote: >> >> All, >> >> Does anyone have any insights on installing yj springs on a cj? I have >> a 1974 cj5 with a 304 and I would like to install yj springs with a >> moderate lift (2" or so) to improve the ride and handling on and off >> road. I am not interested in performing a spring over axle swap or a >> shackle reversal, but swapping out and moving the shackle mounts to >> accomodate the different springs. A companion question to the above is >> what brand of lift springs would be advisable? I have in mind OME, >> BDS, and superlift lift kits. Has anybody any experience with these >> brands? >> >> Thanks, >> >> Karl |
Re: yj springs on a cj
Count the number of leaves in your springs, than ask yourself, why
do they use some many when one or two will do? And why are their arcs different? God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Karl Norrena wrote: > > Bill, > > I have been lurking the newsgroup for awhile and I have read many of > your posts and you usually have good advice, but I think the problem > that the guy had in the video was just bad judgement and not a whole > lot to do with springs. Could you enlighten me if there is something > going on here that I dont see or understand? > > Karl |
Re: yj springs on a cj
Count the number of leaves in your springs, than ask yourself, why
do they use some many when one or two will do? And why are their arcs different? God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Karl Norrena wrote: > > Bill, > > I have been lurking the newsgroup for awhile and I have read many of > your posts and you usually have good advice, but I think the problem > that the guy had in the video was just bad judgement and not a whole > lot to do with springs. Could you enlighten me if there is something > going on here that I dont see or understand? > > Karl |
Re: yj springs on a cj
Count the number of leaves in your springs, than ask yourself, why
do they use some many when one or two will do? And why are their arcs different? God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Karl Norrena wrote: > > Bill, > > I have been lurking the newsgroup for awhile and I have read many of > your posts and you usually have good advice, but I think the problem > that the guy had in the video was just bad judgement and not a whole > lot to do with springs. Could you enlighten me if there is something > going on here that I dont see or understand? > > Karl |
Re: yj springs on a cj
Bill,
I think you are asking me to think about the spring rate of the springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in front and 210lbs/in with 5 leaves in back. Also, they are relatively flat which is similar to those in a yj. I think that there are so many springs and such a high spring rate because at the time it was thought that Jeeps should ride firm. I also think that these high spring rates contributed to stress fractures in the frame. Karl On Sat, 22 Nov 2003 10:58:27 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote: > Count the number of leaves in your springs, than ask yourself, why >do they use some many when one or two will do? And why are their arcs >different? > God Bless America, ßill O|||||||O >mailto:-------------------- http://www.----------.com/ > >Karl Norrena wrote: >> >> Bill, >> >> I have been lurking the newsgroup for awhile and I have read many of >> your posts and you usually have good advice, but I think the problem >> that the guy had in the video was just bad judgement and not a whole >> lot to do with springs. Could you enlighten me if there is something >> going on here that I dont see or understand? >> >> Karl |
Re: yj springs on a cj
Bill,
I think you are asking me to think about the spring rate of the springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in front and 210lbs/in with 5 leaves in back. Also, they are relatively flat which is similar to those in a yj. I think that there are so many springs and such a high spring rate because at the time it was thought that Jeeps should ride firm. I also think that these high spring rates contributed to stress fractures in the frame. Karl On Sat, 22 Nov 2003 10:58:27 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote: > Count the number of leaves in your springs, than ask yourself, why >do they use some many when one or two will do? And why are their arcs >different? > God Bless America, ßill O|||||||O >mailto:-------------------- http://www.----------.com/ > >Karl Norrena wrote: >> >> Bill, >> >> I have been lurking the newsgroup for awhile and I have read many of >> your posts and you usually have good advice, but I think the problem >> that the guy had in the video was just bad judgement and not a whole >> lot to do with springs. Could you enlighten me if there is something >> going on here that I dont see or understand? >> >> Karl |
Re: yj springs on a cj
Bill,
I think you are asking me to think about the spring rate of the springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in front and 210lbs/in with 5 leaves in back. Also, they are relatively flat which is similar to those in a yj. I think that there are so many springs and such a high spring rate because at the time it was thought that Jeeps should ride firm. I also think that these high spring rates contributed to stress fractures in the frame. Karl On Sat, 22 Nov 2003 10:58:27 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote: > Count the number of leaves in your springs, than ask yourself, why >do they use some many when one or two will do? And why are their arcs >different? > God Bless America, ßill O|||||||O >mailto:-------------------- http://www.----------.com/ > >Karl Norrena wrote: >> >> Bill, >> >> I have been lurking the newsgroup for awhile and I have read many of >> your posts and you usually have good advice, but I think the problem >> that the guy had in the video was just bad judgement and not a whole >> lot to do with springs. Could you enlighten me if there is something >> going on here that I dont see or understand? >> >> Karl |
Re: yj springs on a cj
Hi Karl,
Sounds like you need to re arc you springs to stock, maybe add a leaf if you plan to jump, or hit a bump and bounce your Jeep higher than a foot off the ground. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Karl Norrena wrote: > > Bill, > > I think you are asking me to think about the spring rate of the > springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in > front and 210lbs/in with 5 leaves in back. Also, they are relatively > flat which is similar to those in a yj. I think that there are so many > springs and such a high spring rate because at the time it was thought > that Jeeps should ride firm. I also think that these high spring rates > contributed to stress fractures in the frame. > > Karl |
Re: yj springs on a cj
Hi Karl,
Sounds like you need to re arc you springs to stock, maybe add a leaf if you plan to jump, or hit a bump and bounce your Jeep higher than a foot off the ground. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Karl Norrena wrote: > > Bill, > > I think you are asking me to think about the spring rate of the > springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in > front and 210lbs/in with 5 leaves in back. Also, they are relatively > flat which is similar to those in a yj. I think that there are so many > springs and such a high spring rate because at the time it was thought > that Jeeps should ride firm. I also think that these high spring rates > contributed to stress fractures in the frame. > > Karl |
Re: yj springs on a cj
Hi Karl,
Sounds like you need to re arc you springs to stock, maybe add a leaf if you plan to jump, or hit a bump and bounce your Jeep higher than a foot off the ground. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Karl Norrena wrote: > > Bill, > > I think you are asking me to think about the spring rate of the > springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in > front and 210lbs/in with 5 leaves in back. Also, they are relatively > flat which is similar to those in a yj. I think that there are so many > springs and such a high spring rate because at the time it was thought > that Jeeps should ride firm. I also think that these high spring rates > contributed to stress fractures in the frame. > > Karl |
Re: yj springs on a cj
> Does anyone have any insights on installing yj springs on a cj? <
A local club member has done this on a later CJ7 and raves about the ride & flex improvement. There are several kits out there but I think OME's is most complete. It's not a very big job, they just move the frame eye mounts out ward a bit to allow the longer YJ-type springs. Ghe nly comlication I see for you is the width of your inner spring mounts, as on the pre-75's they 2" rather than 2.5". You'd probably either have to weld on new ones or find a sensible way to ------ & reshape the ones you have. >A companion question to the above is what brand of lift springs would be advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any experience with these brands?< OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ kit on my '94 for a number of years before I swapped it out for a RE 4.5" extreme durty kit. It was a good riding & flexing setup, howeverf, some may say the design is getting a bit dated. The limitation on the OME kit is that it's only 2 - 2.5", which may not be enough for you. Let us know how this works out. |
Re: yj springs on a cj
> Does anyone have any insights on installing yj springs on a cj? <
A local club member has done this on a later CJ7 and raves about the ride & flex improvement. There are several kits out there but I think OME's is most complete. It's not a very big job, they just move the frame eye mounts out ward a bit to allow the longer YJ-type springs. Ghe nly comlication I see for you is the width of your inner spring mounts, as on the pre-75's they 2" rather than 2.5". You'd probably either have to weld on new ones or find a sensible way to ------ & reshape the ones you have. >A companion question to the above is what brand of lift springs would be advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any experience with these brands?< OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ kit on my '94 for a number of years before I swapped it out for a RE 4.5" extreme durty kit. It was a good riding & flexing setup, howeverf, some may say the design is getting a bit dated. The limitation on the OME kit is that it's only 2 - 2.5", which may not be enough for you. Let us know how this works out. |
Re: yj springs on a cj
> Does anyone have any insights on installing yj springs on a cj? <
A local club member has done this on a later CJ7 and raves about the ride & flex improvement. There are several kits out there but I think OME's is most complete. It's not a very big job, they just move the frame eye mounts out ward a bit to allow the longer YJ-type springs. Ghe nly comlication I see for you is the width of your inner spring mounts, as on the pre-75's they 2" rather than 2.5". You'd probably either have to weld on new ones or find a sensible way to ------ & reshape the ones you have. >A companion question to the above is what brand of lift springs would be advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any experience with these brands?< OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ kit on my '94 for a number of years before I swapped it out for a RE 4.5" extreme durty kit. It was a good riding & flexing setup, howeverf, some may say the design is getting a bit dated. The limitation on the OME kit is that it's only 2 - 2.5", which may not be enough for you. Let us know how this works out. |
Re: yj springs on a cj
Jerry,
Thanks for your input. Your point about the spring width is a good one and one that I do have some concern over. I was thinking of getting new yj spring hangers and having a bracket built that would provide a sturdier mounting point than just slapping on the new spring perches and shackle mounts. I also have a concern over the front end of my cj being heavier in the front than a yj and that the yj springs might have a bit of trouble coping with the added weight. For now, a 2" lift is acceptable. I have the typical characteristics of a jeep addict, but I also like to incremental improvements rather than "go whole hog" with a big lift.... BTW, who are RE? The project will be started just after Xmas. I will keep y'all posted. Thanks, Karl On Sat, 22 Nov 2003 15:45:41 -0700, "Jerry McG" <gmcgeorge.REMOVE@frontier.net> wrote: >> Does anyone have any insights on installing yj springs on a cj? < > >A local club member has done this on a later CJ7 and raves about the ride & >flex improvement. There are several kits out there but I think OME's is most >complete. It's not a very big job, they just move the frame eye mounts out >ward a bit to allow the longer YJ-type springs. > >Ghe nly comlication I see for you is the width of your inner spring mounts, >as on the pre-75's they 2" rather than 2.5". You'd probably either have to >weld on new ones or find a sensible way to ------ & reshape the ones you >have. > >>A companion question to the above is what brand of lift springs would be >advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any >experience with these >brands?< > >OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ >kit on my '94 for a number of years before I swapped it out for a RE 4.5" >extreme durty kit. It was a good riding & flexing setup, howeverf, some may >say the design is getting a bit dated. > >The limitation on the OME kit is that it's only 2 - 2.5", which may not be >enough for you. > >Let us know how this works out. > |
Re: yj springs on a cj
Jerry,
Thanks for your input. Your point about the spring width is a good one and one that I do have some concern over. I was thinking of getting new yj spring hangers and having a bracket built that would provide a sturdier mounting point than just slapping on the new spring perches and shackle mounts. I also have a concern over the front end of my cj being heavier in the front than a yj and that the yj springs might have a bit of trouble coping with the added weight. For now, a 2" lift is acceptable. I have the typical characteristics of a jeep addict, but I also like to incremental improvements rather than "go whole hog" with a big lift.... BTW, who are RE? The project will be started just after Xmas. I will keep y'all posted. Thanks, Karl On Sat, 22 Nov 2003 15:45:41 -0700, "Jerry McG" <gmcgeorge.REMOVE@frontier.net> wrote: >> Does anyone have any insights on installing yj springs on a cj? < > >A local club member has done this on a later CJ7 and raves about the ride & >flex improvement. There are several kits out there but I think OME's is most >complete. It's not a very big job, they just move the frame eye mounts out >ward a bit to allow the longer YJ-type springs. > >Ghe nly comlication I see for you is the width of your inner spring mounts, >as on the pre-75's they 2" rather than 2.5". You'd probably either have to >weld on new ones or find a sensible way to ------ & reshape the ones you >have. > >>A companion question to the above is what brand of lift springs would be >advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any >experience with these >brands?< > >OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ >kit on my '94 for a number of years before I swapped it out for a RE 4.5" >extreme durty kit. It was a good riding & flexing setup, howeverf, some may >say the design is getting a bit dated. > >The limitation on the OME kit is that it's only 2 - 2.5", which may not be >enough for you. > >Let us know how this works out. > |
Re: yj springs on a cj
Jerry,
Thanks for your input. Your point about the spring width is a good one and one that I do have some concern over. I was thinking of getting new yj spring hangers and having a bracket built that would provide a sturdier mounting point than just slapping on the new spring perches and shackle mounts. I also have a concern over the front end of my cj being heavier in the front than a yj and that the yj springs might have a bit of trouble coping with the added weight. For now, a 2" lift is acceptable. I have the typical characteristics of a jeep addict, but I also like to incremental improvements rather than "go whole hog" with a big lift.... BTW, who are RE? The project will be started just after Xmas. I will keep y'all posted. Thanks, Karl On Sat, 22 Nov 2003 15:45:41 -0700, "Jerry McG" <gmcgeorge.REMOVE@frontier.net> wrote: >> Does anyone have any insights on installing yj springs on a cj? < > >A local club member has done this on a later CJ7 and raves about the ride & >flex improvement. There are several kits out there but I think OME's is most >complete. It's not a very big job, they just move the frame eye mounts out >ward a bit to allow the longer YJ-type springs. > >Ghe nly comlication I see for you is the width of your inner spring mounts, >as on the pre-75's they 2" rather than 2.5". You'd probably either have to >weld on new ones or find a sensible way to ------ & reshape the ones you >have. > >>A companion question to the above is what brand of lift springs would be >advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any >experience with these >brands?< > >OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ >kit on my '94 for a number of years before I swapped it out for a RE 4.5" >extreme durty kit. It was a good riding & flexing setup, howeverf, some may >say the design is getting a bit dated. > >The limitation on the OME kit is that it's only 2 - 2.5", which may not be >enough for you. > >Let us know how this works out. > |
Re: yj springs on a cj
>I was thinking of getting new yj spring hangers and having a bracket built
that would provide a sturdier mounting point than just slapping on the new spring perches and shackle mounts. < The kit's I've seen use a wider JKS-type cast front & rear spring mount and just move them out about 1". In your case the inner mounts have to be ------ open or cut off & replace. You could just get some YJ or later CJ bracketry, cut the old ones off & weld 'em on. > I also have a concern over the front end of my cj being heavier in the front than a yj and that the yj springs might have a bit of trouble coping with the added weight. < My friends CJ7 has a 460 V8 and is fine. You can always tune the spring pack by adding an additional leaf. FWIW, OME offers several different YJ kits, depending upon configuration, plus they have some add-a-leaf kits available for the same purpose. > BTW, who are RE? < Rubicon Express www.rubiconexpress.com/ |
Re: yj springs on a cj
>I was thinking of getting new yj spring hangers and having a bracket built
that would provide a sturdier mounting point than just slapping on the new spring perches and shackle mounts. < The kit's I've seen use a wider JKS-type cast front & rear spring mount and just move them out about 1". In your case the inner mounts have to be ------ open or cut off & replace. You could just get some YJ or later CJ bracketry, cut the old ones off & weld 'em on. > I also have a concern over the front end of my cj being heavier in the front than a yj and that the yj springs might have a bit of trouble coping with the added weight. < My friends CJ7 has a 460 V8 and is fine. You can always tune the spring pack by adding an additional leaf. FWIW, OME offers several different YJ kits, depending upon configuration, plus they have some add-a-leaf kits available for the same purpose. > BTW, who are RE? < Rubicon Express www.rubiconexpress.com/ |
Re: yj springs on a cj
>I was thinking of getting new yj spring hangers and having a bracket built
that would provide a sturdier mounting point than just slapping on the new spring perches and shackle mounts. < The kit's I've seen use a wider JKS-type cast front & rear spring mount and just move them out about 1". In your case the inner mounts have to be ------ open or cut off & replace. You could just get some YJ or later CJ bracketry, cut the old ones off & weld 'em on. > I also have a concern over the front end of my cj being heavier in the front than a yj and that the yj springs might have a bit of trouble coping with the added weight. < My friends CJ7 has a 460 V8 and is fine. You can always tune the spring pack by adding an additional leaf. FWIW, OME offers several different YJ kits, depending upon configuration, plus they have some add-a-leaf kits available for the same purpose. > BTW, who are RE? < Rubicon Express www.rubiconexpress.com/ |
Re: yj springs on a cj
Well, for starters, they had to make the YJ frame heavier than the CJ
one to handle the flex the softer springs give. Softer springs make more torque on the frame when twisted up because they can have the wheel at a steeper angle to the frame. If you do any type of rutty hill climbs, the softer springs are a downgrade for getting up there from the CJ springs. This is the same with the coil springs on the TJ's. They start a harmonic bounce and loose traction easy. We wheel in old sand pits and climb the walls. I go up top in my CJ7 with stock springs arched 2.5" and the second from top leaf already heat arched and replaced as a 'keeper' spring. Then I sit there and take photos of everyone trying to get where I am... ;-) I have to be in 3rd low and to the mats to make it with open diffs. I am hitting 20 mph at the bottom and 400 rpm at the crest with it just chewing it's way up. No rooster tails usually. I 'love' my BFG 33x9.5's.... I ran up one ravine wall on an ATV trail last year and only one out of 10 or more could make it. He had a stiff spring lift on a YJ. The rest all bounced out because of soft springs. Got lots of photos on that one. LOL! Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Karl Norrena wrote: > > All, > > Does anyone have any insights on installing yj springs on a cj? I have > a 1974 cj5 with a 304 and I would like to install yj springs with a > moderate lift (2" or so) to improve the ride and handling on and off > road. I am not interested in performing a spring over axle swap or a > shackle reversal, but swapping out and moving the shackle mounts to > accomodate the different springs. A companion question to the above is > what brand of lift springs would be advisable? I have in mind OME, > BDS, and superlift lift kits. Has anybody any experience with these > brands? > > Thanks, > > Karl |
Re: yj springs on a cj
Well, for starters, they had to make the YJ frame heavier than the CJ
one to handle the flex the softer springs give. Softer springs make more torque on the frame when twisted up because they can have the wheel at a steeper angle to the frame. If you do any type of rutty hill climbs, the softer springs are a downgrade for getting up there from the CJ springs. This is the same with the coil springs on the TJ's. They start a harmonic bounce and loose traction easy. We wheel in old sand pits and climb the walls. I go up top in my CJ7 with stock springs arched 2.5" and the second from top leaf already heat arched and replaced as a 'keeper' spring. Then I sit there and take photos of everyone trying to get where I am... ;-) I have to be in 3rd low and to the mats to make it with open diffs. I am hitting 20 mph at the bottom and 400 rpm at the crest with it just chewing it's way up. No rooster tails usually. I 'love' my BFG 33x9.5's.... I ran up one ravine wall on an ATV trail last year and only one out of 10 or more could make it. He had a stiff spring lift on a YJ. The rest all bounced out because of soft springs. Got lots of photos on that one. LOL! Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Karl Norrena wrote: > > All, > > Does anyone have any insights on installing yj springs on a cj? I have > a 1974 cj5 with a 304 and I would like to install yj springs with a > moderate lift (2" or so) to improve the ride and handling on and off > road. I am not interested in performing a spring over axle swap or a > shackle reversal, but swapping out and moving the shackle mounts to > accomodate the different springs. A companion question to the above is > what brand of lift springs would be advisable? I have in mind OME, > BDS, and superlift lift kits. Has anybody any experience with these > brands? > > Thanks, > > Karl |
Re: yj springs on a cj
Well, for starters, they had to make the YJ frame heavier than the CJ
one to handle the flex the softer springs give. Softer springs make more torque on the frame when twisted up because they can have the wheel at a steeper angle to the frame. If you do any type of rutty hill climbs, the softer springs are a downgrade for getting up there from the CJ springs. This is the same with the coil springs on the TJ's. They start a harmonic bounce and loose traction easy. We wheel in old sand pits and climb the walls. I go up top in my CJ7 with stock springs arched 2.5" and the second from top leaf already heat arched and replaced as a 'keeper' spring. Then I sit there and take photos of everyone trying to get where I am... ;-) I have to be in 3rd low and to the mats to make it with open diffs. I am hitting 20 mph at the bottom and 400 rpm at the crest with it just chewing it's way up. No rooster tails usually. I 'love' my BFG 33x9.5's.... I ran up one ravine wall on an ATV trail last year and only one out of 10 or more could make it. He had a stiff spring lift on a YJ. The rest all bounced out because of soft springs. Got lots of photos on that one. LOL! Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Karl Norrena wrote: > > All, > > Does anyone have any insights on installing yj springs on a cj? I have > a 1974 cj5 with a 304 and I would like to install yj springs with a > moderate lift (2" or so) to improve the ride and handling on and off > road. I am not interested in performing a spring over axle swap or a > shackle reversal, but swapping out and moving the shackle mounts to > accomodate the different springs. A companion question to the above is > what brand of lift springs would be advisable? I have in mind OME, > BDS, and superlift lift kits. Has anybody any experience with these > brands? > > Thanks, > > Karl |
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