Compression Impact on Temp

F

Fat Fender

Member
I've recently rebuilt a 59AB and put in a 4" crank. Compression after all was said and done is about 110 lbs on all cylinders (give or take ~5 lbs).
Engine runs great, but the temp is always about 110 degrees plus ambient. So at a 90 degree outside reading, I'm running at ~200 degrees. This to High? Does the higher compression lead to more engine temp?
BTW, I'm running Skips pumps, Water Wetter, 50/50 mix anti-freeze, dual exhausts, and stats (180) installed.

Thanks for any experience/info.
Fat Fender
 
Confirm gauge reading and compare to another gauge.What ignition system are you running?

R
 
Compression=heat
Spark timing = heat
Air fuel mixture=heat

Need the correct in all three areas..Compression is a built in ratio, air fuel is a adjustable givin and spark advance and curve is adjustable as well.....
 
110 lbs isn't a very high compression reading 140-160 is. a clean block and radiator will usually handle this with no problem, check for late timing.
Note: If you're rebuilding an OLD engine get it backed cleaned.
 
If you will carefully re-read my book(Flathead Facts) you will understand why increasing the compression ratio will DECREASE the amount of heat transfered into the cooling system. Ron, you surely remember my explanation?
 
An engine simply turns heat into mechanical energy. The more heat that is converted the less for the radiator to have to remove. That is simple. Complex could go on forever. But I think this is what JWL is driving at.
 
JWL said:
If you will carefully re-read my book(Flathead Facts) you will understand why increasing the compression ratio will DECREASE the amount of heat transfered into the cooling system. Ron, you surely remember my explanation?
Click to expand...

Ever since I have driven my '50 Ford, it has vapor locked when I would stop for a snack or gas. I would need to turn on the electric pump before I would get up speed for a few seconds. After my piston loss in Abilene, Ks. last Oct. and hauling the car home, I did a complete engine rebuild and I drove it to Auburn last month, 1230 miles, and there wasn't a hint of vapor lock. Same carb, fuel pump, water pumps, etc. Obviously, the engine is running cooler??
 
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