Increased Engine Temperature / Headers advice
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Increased Engine Temperature / Headers advice
I'm pretty sure the head gasket isn't leaking. The engine was rebuilt in 1995. I don't see any oil in the coolant. What are the other ways to check the head gasket?
I'm trying to find a shroud. I looked in a catalog and they don't list shroud sizes, only year and markings on the shroud. I took out the small radiator that was in it, and put a bigger one in. The new one fit exactly with the other drill holes for the bigger radiator, but I'm not sure which engines used the bigger one (or the year of the bigger engines). In addition, the measurements I took to match any of the replacement radiators they have....but the new one I put in fit perfectly. I don't know if their measurements are wrong, or their drawing isn't good to take the dimensions. I called them up yesterday, and they weren't very helpful
I bought the radiator at Pep Boys. It was the only one they had listed for the truck, and its bigger than the original. Does anyone know what other engine called for this size radiator?
I'm trying to find a shroud. I looked in a catalog and they don't list shroud sizes, only year and markings on the shroud. I took out the small radiator that was in it, and put a bigger one in. The new one fit exactly with the other drill holes for the bigger radiator, but I'm not sure which engines used the bigger one (or the year of the bigger engines). In addition, the measurements I took to match any of the replacement radiators they have....but the new one I put in fit perfectly. I don't know if their measurements are wrong, or their drawing isn't good to take the dimensions. I called them up yesterday, and they weren't very helpful
I bought the radiator at Pep Boys. It was the only one they had listed for the truck, and its bigger than the original. Does anyone know what other engine called for this size radiator?
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Increased Engine Temperature / Headers advice
For anyone overheating on the highway, check to make sure there is a spring in the lower radiator hose. Some hoses you buy require you to take the spring out of the original hose. Going down the highway, without the spring, can make the lower hose suck shut, restricting flow to the waterpump.
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Increased Engine Temperature / Headers advice
Ford 302's need the coolent passages on the heads opened up slightly,pencil grind them to match the head gasket hole size.
Also they need more holes drilled though them to allow more coolent to flow around inside heads. Plus I think the egr system tend to make 302's run hotter when there plugged up. 302's run hot because of these things on the highway most of the time.
Before a thermostat is installed into a 302 test it in a pot of boiling water. Because its so hard to put on twice.
Don't get one of those small finned flex fans,get one with many fat blades and maake a shrod if you have to.
Also just put on a new top radiater hose thats hard,it also can make the differance. GOD BLESS
Also they need more holes drilled though them to allow more coolent to flow around inside heads. Plus I think the egr system tend to make 302's run hotter when there plugged up. 302's run hot because of these things on the highway most of the time.
Before a thermostat is installed into a 302 test it in a pot of boiling water. Because its so hard to put on twice.
Don't get one of those small finned flex fans,get one with many fat blades and maake a shrod if you have to.
Also just put on a new top radiater hose thats hard,it also can make the differance. GOD BLESS
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Increased Engine Temperature / Headers advice
Are you building up alot of pressure in the cooling system? This would be the sign of a leaking head gasket. With the engine cold. Remove the radiator cap and start the engine. If you see bubbles coming up, probably a head gasket.
The radiator that you have sounds like a 351 radiator. Is it 3 core?
That is the one that I use in both of my 77's and it is bigger that the one that came with the 302. I believe it is for a 351 with A/C.
I hope this helps, Jimmy
The radiator that you have sounds like a 351 radiator. Is it 3 core?
That is the one that I use in both of my 77's and it is bigger that the one that came with the 302. I believe it is for a 351 with A/C.
I hope this helps, Jimmy
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Increased Engine Temperature / Headers advice
Follow up by Herkdriver
I'm replying to my earlier post. I checked just about everything I could on my own. I replaced the 160 thermostat with a 180. In addition, I wired in a some new gauges; tach, water temp, oil press, and battery volt.
The new water temp gauge is showing it to be holding steady between 180-190 driving, and I haven't seen it get over 190 at an idle. It has cooled down her in TX a bit (mid 80's). I haven't idled it for a extended period of time.
I'm beginning to think that the old (new) thermostat was faulty. I'm also wondering if that new Edelbrock Intake manifold was causing the old factory water temp sensor to act up. I don't know if the new manifold being aluminum would cause that or not. I did talk to a mechanic on base who told me that Ford is notorious for bad water temp sensors. I still need to get that radiator shroud. Truck seems to be running great temperature wise now. Fall and Winter is coming, maybe I'll hold off on the shroud till next Spring.
But here's my question....yup, another one....what should the normal operating temperature be? And what would be considered HOT?
I'm replying to my earlier post. I checked just about everything I could on my own. I replaced the 160 thermostat with a 180. In addition, I wired in a some new gauges; tach, water temp, oil press, and battery volt.
The new water temp gauge is showing it to be holding steady between 180-190 driving, and I haven't seen it get over 190 at an idle. It has cooled down her in TX a bit (mid 80's). I haven't idled it for a extended period of time.
I'm beginning to think that the old (new) thermostat was faulty. I'm also wondering if that new Edelbrock Intake manifold was causing the old factory water temp sensor to act up. I don't know if the new manifold being aluminum would cause that or not. I did talk to a mechanic on base who told me that Ford is notorious for bad water temp sensors. I still need to get that radiator shroud. Truck seems to be running great temperature wise now. Fall and Winter is coming, maybe I'll hold off on the shroud till next Spring.
But here's my question....yup, another one....what should the normal operating temperature be? And what would be considered HOT?
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From: CA
Increased Engine Temperature / Headers advice
Flex fans are designed to use less horsepower at higher rpm's. They do this by flattening out from higher centrifical forces that higher rpm's cause. The result is a slight horespower saving....and little if any cooling effect!!
I read a test report somewhere that an unshrouded fan at 1800 rpm only has half the effect of pulling air through the radiator as a shrouded fan does!! Go back to the stock fan and shroud. Polkat
I read a test report somewhere that an unshrouded fan at 1800 rpm only has half the effect of pulling air through the radiator as a shrouded fan does!! Go back to the stock fan and shroud. Polkat
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