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Author Topic:   temp
posted March 25, 2002 08:15 PM
hey guys i run alky and last week my motor ran around 195-200 degrees, it is a new motor with around 13 to 1 compression. timing is on about 36 total advance. is this kinda temp normal. last year my motor ran 180 when it was hot outside and it was still cool the other night, but last year my motor didnt have but about 11.5 to 1 compression. just wondering is this normal?

posted March 25, 2002 08:24 PM
I hotlapped my car yesterday, the temp outside was around 50 degrees. I have a 13.5:1 362 cube engine runnin on alky. The temp never got above 140 degrees. Ran 10-15 hard laps like that, just couldnt get any temp in motor

posted March 25, 2002 09:39 PM
what kind of engine are we talking about. is it the same engine that you ran before or is it totally different. some of the 400 block combinations seem to run a little warmer.

posted March 26, 2002 12:47 AM
Are you running a thermostat? I ran a gutted 180 thermo and my 11 to 1 motor ran 180 all the time, when I went to a 13 to 1 it ran about 200 all the time and all I changed was the motor under the intake. You seem to be right in the ballpark. by a gutted thermo I mean it had the spring and plunger taken off the rest was still there.

posted March 26, 2002 10:04 AM
200 is nothing at all to worry about,140 is very hard on engines.

posted March 26, 2002 10:26 AM
The guy running 140 needs to take some jet out of the car. Running that low of a temp will allow alcohol to seep past the rings and get in the oil, and you are also losing HP running that cool. 190 to 200 is perfect for an alky engine. If you are 200 in cool temps and are happy with the performance of the engine, when it gets warmer you might have to increase jet sizes to stay in that range, or try running water wetter from red line. That is the best temp reducer I ever used and does not leave a residue like 40 below. Try running one bottle in your radiator at first because I have seen it drop temps 15 to 25 degrees and you don't really want to go below 190.

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