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Re: overheating 258 HELP!
Pictures of the water pump's normal and reverse rotation propellers
http://www.----------.com/waterPump.jpg God Bless America, ßill O|||||||O mailto:-------------------- "L.W.(ßill) ------ III" wrote: > > Double check that you don't have the reversed water pump made for > the serpentine belt. |
Re: overheating 258 HELP!
Pictures of the water pump's normal and reverse rotation propellers
http://www.----------.com/waterPump.jpg God Bless America, ßill O|||||||O mailto:-------------------- "L.W.(ßill) ------ III" wrote: > > Double check that you don't have the reversed water pump made for > the serpentine belt. |
Re: overheating 258 HELP!
Pictures of the water pump's normal and reverse rotation propellers
http://www.----------.com/waterPump.jpg God Bless America, ßill O|||||||O mailto:-------------------- "L.W.(ßill) ------ III" wrote: > > Double check that you don't have the reversed water pump made for > the serpentine belt. |
Re: overheating 258 HELP!
did you have the radiator serviced bya readiator shop. Could be
clogged. On Sun, 8 Feb 2004 22:28:06 -0600, "brad smith" <bradley_k_smith@hotmaill.com> wrote: >My 4.2 in my '81 CJ-7 is running hot. According to my Temp gauge >it is always running at the very end of the green band in the >winter and last summer was on the H line. After driving it I can >hear the coolant bubbling in the system and the radiator cap will >have it's vent popped. I have replaced the water pump, fan >clutch, hoses, temperature sending unit, temperature gauge in >spedo cluster, 15# radiator cap, thermostat housing, thermostat >(using 160 now, only way to "keep it in the green") and had >radiator steam cleaned. It still seams to be running hot even in >Kansas City's 20-30 F weather we are having now. I don't see any >coolant in the oil and there doesn't seem to be any burn off. > >I did have to run a wire direct from the sending unit to the >gauge - my Painless harness has a break in the temp wire (not >that it matters). I do not have a fan shroud. I have run out of >things to replace and I am still running hot. My only thoughts >are that my aftermarket products are causing to much heat in the >combustion chamber or to much carbon build-up inside the engine. > >Thoughts? > >Also - I am planning on the 4.0 head swap in the near future - >any suggestions on where to get a head and what casting I should >look for? > >Thanks for looking >Brad > >P.S. 258 w/ Holley 2bbl 500cfm carb, Clifford intake, headman >headers, GM HEI distributor, stock heat range spark plugs, aprox >95,000 miles. > |
Re: overheating 258 HELP!
did you have the radiator serviced bya readiator shop. Could be
clogged. On Sun, 8 Feb 2004 22:28:06 -0600, "brad smith" <bradley_k_smith@hotmaill.com> wrote: >My 4.2 in my '81 CJ-7 is running hot. According to my Temp gauge >it is always running at the very end of the green band in the >winter and last summer was on the H line. After driving it I can >hear the coolant bubbling in the system and the radiator cap will >have it's vent popped. I have replaced the water pump, fan >clutch, hoses, temperature sending unit, temperature gauge in >spedo cluster, 15# radiator cap, thermostat housing, thermostat >(using 160 now, only way to "keep it in the green") and had >radiator steam cleaned. It still seams to be running hot even in >Kansas City's 20-30 F weather we are having now. I don't see any >coolant in the oil and there doesn't seem to be any burn off. > >I did have to run a wire direct from the sending unit to the >gauge - my Painless harness has a break in the temp wire (not >that it matters). I do not have a fan shroud. I have run out of >things to replace and I am still running hot. My only thoughts >are that my aftermarket products are causing to much heat in the >combustion chamber or to much carbon build-up inside the engine. > >Thoughts? > >Also - I am planning on the 4.0 head swap in the near future - >any suggestions on where to get a head and what casting I should >look for? > >Thanks for looking >Brad > >P.S. 258 w/ Holley 2bbl 500cfm carb, Clifford intake, headman >headers, GM HEI distributor, stock heat range spark plugs, aprox >95,000 miles. > |
Re: overheating 258 HELP!
did you have the radiator serviced bya readiator shop. Could be
clogged. On Sun, 8 Feb 2004 22:28:06 -0600, "brad smith" <bradley_k_smith@hotmaill.com> wrote: >My 4.2 in my '81 CJ-7 is running hot. According to my Temp gauge >it is always running at the very end of the green band in the >winter and last summer was on the H line. After driving it I can >hear the coolant bubbling in the system and the radiator cap will >have it's vent popped. I have replaced the water pump, fan >clutch, hoses, temperature sending unit, temperature gauge in >spedo cluster, 15# radiator cap, thermostat housing, thermostat >(using 160 now, only way to "keep it in the green") and had >radiator steam cleaned. It still seams to be running hot even in >Kansas City's 20-30 F weather we are having now. I don't see any >coolant in the oil and there doesn't seem to be any burn off. > >I did have to run a wire direct from the sending unit to the >gauge - my Painless harness has a break in the temp wire (not >that it matters). I do not have a fan shroud. I have run out of >things to replace and I am still running hot. My only thoughts >are that my aftermarket products are causing to much heat in the >combustion chamber or to much carbon build-up inside the engine. > >Thoughts? > >Also - I am planning on the 4.0 head swap in the near future - >any suggestions on where to get a head and what casting I should >look for? > >Thanks for looking >Brad > >P.S. 258 w/ Holley 2bbl 500cfm carb, Clifford intake, headman >headers, GM HEI distributor, stock heat range spark plugs, aprox >95,000 miles. > |
Re: overheating 258 HELP!
I have an 81 CJ7 258 too, no fan shroud.
"Cherokee-LTD" <spammenot@home.com> wrote in message news:PFFVb.42744$3YE1.25320@news04.bloor.is.net.ca ble.rogers.com... > Put the fan shroud back on, the shroud will make a big difference at idle > and low speed. > -Brian > > "brad smith" <bradley_k_smith@hotmaill.com> wrote in message > news:5%DVb.30285$2h.25705@twister.rdc-kc.rr.com... > : My 4.2 in my '81 CJ-7 is running hot. According to my Temp gauge > : it is always running at the very end of the green band in the > : winter and last summer was on the H line. After driving it I can > : hear the coolant bubbling in the system and the radiator cap will > : have it's vent popped. I have replaced the water pump, fan > : clutch, hoses, temperature sending unit, temperature gauge in > : spedo cluster, 15# radiator cap, thermostat housing, thermostat > : (using 160 now, only way to "keep it in the green") and had > : radiator steam cleaned. It still seams to be running hot even in > : Kansas City's 20-30 F weather we are having now. I don't see any > : coolant in the oil and there doesn't seem to be any burn off. > : > : I did have to run a wire direct from the sending unit to the > : gauge - my Painless harness has a break in the temp wire (not > : that it matters). I do not have a fan shroud. I have run out of > : things to replace and I am still running hot. My only thoughts > : are that my aftermarket products are causing to much heat in the > : combustion chamber or to much carbon build-up inside the engine. > : > : Thoughts? > : > : Also - I am planning on the 4.0 head swap in the near future - > : any suggestions on where to get a head and what casting I should > : look for? > : > : Thanks for looking > : Brad > : > : P.S. 258 w/ Holley 2bbl 500cfm carb, Clifford intake, headman > : headers, GM HEI distributor, stock heat range spark plugs, aprox > : 95,000 miles. > : > : > > |
Re: overheating 258 HELP!
I have an 81 CJ7 258 too, no fan shroud.
"Cherokee-LTD" <spammenot@home.com> wrote in message news:PFFVb.42744$3YE1.25320@news04.bloor.is.net.ca ble.rogers.com... > Put the fan shroud back on, the shroud will make a big difference at idle > and low speed. > -Brian > > "brad smith" <bradley_k_smith@hotmaill.com> wrote in message > news:5%DVb.30285$2h.25705@twister.rdc-kc.rr.com... > : My 4.2 in my '81 CJ-7 is running hot. According to my Temp gauge > : it is always running at the very end of the green band in the > : winter and last summer was on the H line. After driving it I can > : hear the coolant bubbling in the system and the radiator cap will > : have it's vent popped. I have replaced the water pump, fan > : clutch, hoses, temperature sending unit, temperature gauge in > : spedo cluster, 15# radiator cap, thermostat housing, thermostat > : (using 160 now, only way to "keep it in the green") and had > : radiator steam cleaned. It still seams to be running hot even in > : Kansas City's 20-30 F weather we are having now. I don't see any > : coolant in the oil and there doesn't seem to be any burn off. > : > : I did have to run a wire direct from the sending unit to the > : gauge - my Painless harness has a break in the temp wire (not > : that it matters). I do not have a fan shroud. I have run out of > : things to replace and I am still running hot. My only thoughts > : are that my aftermarket products are causing to much heat in the > : combustion chamber or to much carbon build-up inside the engine. > : > : Thoughts? > : > : Also - I am planning on the 4.0 head swap in the near future - > : any suggestions on where to get a head and what casting I should > : look for? > : > : Thanks for looking > : Brad > : > : P.S. 258 w/ Holley 2bbl 500cfm carb, Clifford intake, headman > : headers, GM HEI distributor, stock heat range spark plugs, aprox > : 95,000 miles. > : > : > > |
Re: overheating 258 HELP!
I have an 81 CJ7 258 too, no fan shroud.
"Cherokee-LTD" <spammenot@home.com> wrote in message news:PFFVb.42744$3YE1.25320@news04.bloor.is.net.ca ble.rogers.com... > Put the fan shroud back on, the shroud will make a big difference at idle > and low speed. > -Brian > > "brad smith" <bradley_k_smith@hotmaill.com> wrote in message > news:5%DVb.30285$2h.25705@twister.rdc-kc.rr.com... > : My 4.2 in my '81 CJ-7 is running hot. According to my Temp gauge > : it is always running at the very end of the green band in the > : winter and last summer was on the H line. After driving it I can > : hear the coolant bubbling in the system and the radiator cap will > : have it's vent popped. I have replaced the water pump, fan > : clutch, hoses, temperature sending unit, temperature gauge in > : spedo cluster, 15# radiator cap, thermostat housing, thermostat > : (using 160 now, only way to "keep it in the green") and had > : radiator steam cleaned. It still seams to be running hot even in > : Kansas City's 20-30 F weather we are having now. I don't see any > : coolant in the oil and there doesn't seem to be any burn off. > : > : I did have to run a wire direct from the sending unit to the > : gauge - my Painless harness has a break in the temp wire (not > : that it matters). I do not have a fan shroud. I have run out of > : things to replace and I am still running hot. My only thoughts > : are that my aftermarket products are causing to much heat in the > : combustion chamber or to much carbon build-up inside the engine. > : > : Thoughts? > : > : Also - I am planning on the 4.0 head swap in the near future - > : any suggestions on where to get a head and what casting I should > : look for? > : > : Thanks for looking > : Brad > : > : P.S. 258 w/ Holley 2bbl 500cfm carb, Clifford intake, headman > : headers, GM HEI distributor, stock heat range spark plugs, aprox > : 95,000 miles. > : > : > > |
Re: overheating 258 HELP!
If a 160 is the only way yo keep the temp down, I would guess you have a
blown head gasket. I would try heating it up with the rad cap off and watch for many tiny bubbles and smoke coming out the hole or a major explosion of fluid when the t-stat opens. On some, once the thermostat has opened you can put your hand over the opening and feel the puffs of compression. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's brad smith wrote: > > My 4.2 in my '81 CJ-7 is running hot. According to my Temp gauge > it is always running at the very end of the green band in the > winter and last summer was on the H line. After driving it I can > hear the coolant bubbling in the system and the radiator cap will > have it's vent popped. I have replaced the water pump, fan > clutch, hoses, temperature sending unit, temperature gauge in > spedo cluster, 15# radiator cap, thermostat housing, thermostat > (using 160 now, only way to "keep it in the green") and had > radiator steam cleaned. It still seams to be running hot even in > Kansas City's 20-30 F weather we are having now. I don't see any > coolant in the oil and there doesn't seem to be any burn off. > > I did have to run a wire direct from the sending unit to the > gauge - my Painless harness has a break in the temp wire (not > that it matters). I do not have a fan shroud. I have run out of > things to replace and I am still running hot. My only thoughts > are that my aftermarket products are causing to much heat in the > combustion chamber or to much carbon build-up inside the engine. > > Thoughts? > > Also - I am planning on the 4.0 head swap in the near future - > any suggestions on where to get a head and what casting I should > look for? > > Thanks for looking > Brad > > P.S. 258 w/ Holley 2bbl 500cfm carb, Clifford intake, headman > headers, GM HEI distributor, stock heat range spark plugs, aprox > 95,000 miles. |
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