brids5

I had the same problem until I put an electric fan on the front of my
radiator. Now I can sit in Norfolk traffic in the summer with out the heater
on. You can get one for about $50 at Pepboys. Get the biggest one that will
fit.
"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.
>
>

brids5

I had the same problem until I put an electric fan on the front of my
radiator. Now I can sit in Norfolk traffic in the summer with out the heater
on. You can get one for about $50 at Pepboys. Get the biggest one that will
fit.
"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.
>
>

brids5

I had the same problem until I put an electric fan on the front of my
radiator. Now I can sit in Norfolk traffic in the summer with out the heater
on. You can get one for about $50 at Pepboys. Get the biggest one that will
fit.
"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.
>
>

Drink

You don't have too much anti-freeze in the mix do you? Went heavy on the
antifreeze then topped it off with straight green stuff after it ran low,
maybe?
I don't have a shroud either and it runs fine. Tune the carb, set the
timing right and replace the water/anti-freeze mix. Just a thought.
o_o_o_o
Best Regards, /| ,[_____],
Jim, WP3JQ |ŻŻŻL --O|||||||O-
()_)Ż()_) ŻŻŻŻŻ )_)
EM60qk 30.447439N 086.628959W
"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.
>
>

Drink

You don't have too much anti-freeze in the mix do you? Went heavy on the
antifreeze then topped it off with straight green stuff after it ran low,
maybe?
I don't have a shroud either and it runs fine. Tune the carb, set the
timing right and replace the water/anti-freeze mix. Just a thought.
o_o_o_o
Best Regards, /| ,[_____],
Jim, WP3JQ |ŻŻŻL --O|||||||O-
()_)Ż()_) ŻŻŻŻŻ )_)
EM60qk 30.447439N 086.628959W
"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.
>
>

Drink

You don't have too much anti-freeze in the mix do you? Went heavy on the
antifreeze then topped it off with straight green stuff after it ran low,
maybe?
I don't have a shroud either and it runs fine. Tune the carb, set the
timing right and replace the water/anti-freeze mix. Just a thought.
o_o_o_o
Best Regards, /| ,[_____],
Jim, WP3JQ |ŻŻŻL --O|||||||O-
()_)Ż()_) ŻŻŻŻŻ )_)
EM60qk 30.447439N 086.628959W
"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.
>
>

Harold Hoover

How is your engine oil level and pressure guage reading?

If your engine has high mileage, a high flow oil pump could be in order.

For my 258ci powered CJ-7 (4.0 head, Clifford intake, dual outlet
header; Motorcraft 390cfm carb) I use a PermaCool engine oil cooler with
over-sized oil filter, AMC V8 3 core radiator, 180 degree thermostat,
FlowKooler high flow water pump, high flow oil pump, and a FlexiLite
dual electric fan (because of a 1" body lift). I have no overheating
problems with over 272K miles on the block without a rebore.

As for a 4.0 head, it would be fun to look into HESCO's new aluminum 4.0
head. They will soon offer a standard head, ported, and fully ported
version.



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.

--
Harold J. Hoover

1984 CJ-7
guyloginin@earth*link.net - (Remove * to reply)
http://home.earthlink.net/~guyloginin/Jeep.html
Sedona, AZ USA

Harold Hoover

How is your engine oil level and pressure guage reading?

If your engine has high mileage, a high flow oil pump could be in order.

For my 258ci powered CJ-7 (4.0 head, Clifford intake, dual outlet
header; Motorcraft 390cfm carb) I use a PermaCool engine oil cooler with
over-sized oil filter, AMC V8 3 core radiator, 180 degree thermostat,
FlowKooler high flow water pump, high flow oil pump, and a FlexiLite
dual electric fan (because of a 1" body lift). I have no overheating
problems with over 272K miles on the block without a rebore.

As for a 4.0 head, it would be fun to look into HESCO's new aluminum 4.0
head. They will soon offer a standard head, ported, and fully ported
version.



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.

--
Harold J. Hoover

1984 CJ-7
guyloginin@earth*link.net - (Remove * to reply)
http://home.earthlink.net/~guyloginin/Jeep.html
Sedona, AZ USA

Harold Hoover

How is your engine oil level and pressure guage reading?

If your engine has high mileage, a high flow oil pump could be in order.

For my 258ci powered CJ-7 (4.0 head, Clifford intake, dual outlet
header; Motorcraft 390cfm carb) I use a PermaCool engine oil cooler with
over-sized oil filter, AMC V8 3 core radiator, 180 degree thermostat,
FlowKooler high flow water pump, high flow oil pump, and a FlexiLite
dual electric fan (because of a 1" body lift). I have no overheating
problems with over 272K miles on the block without a rebore.

As for a 4.0 head, it would be fun to look into HESCO's new aluminum 4.0
head. They will soon offer a standard head, ported, and fully ported
version.



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.

--
Harold J. Hoover

1984 CJ-7
guyloginin@earth*link.net - (Remove * to reply)
http://home.earthlink.net/~guyloginin/Jeep.html
Sedona, AZ USA