Quote:
Originally Posted by Pontirag
you blew both head gaskets? was there any over heating problems befor you installed the cam and intake? any over heating problems after installing the cam and intake/carb set up? Did you check to see if the heads were warped befor you re installed them?
Do a leak down compression check so see if the head gaskets are leaking-might have warped one or both heads.
Determining when the overheating occured in terms of the components installation might indicate that there are tunning issues that are causing the over heating,
lean condition from the carb
timing problems from cam choice (vacuum signal)
Stuck or rusty advanced weights
New timing chain? sloppy old ones dont work with new performance cams. new timing chains installed incorrectly (some allow 2 or more degrees of advance or retard)
Harmonic balancer slipping (wrong timing marks)
that is just some of the possibilities. I have found that low compression motors do not like HP cams. tired old motors (vary familiar)
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I did have the heads checked before i put them back on. and no i didn't have a problem with the over heating after i put the cam in. that was a year and half ago, about. it seemed to start after the test and tune at the track. Right now i have radiator flush in the system. I drained it, put a gutted thermostat in, put the flush in, filled with water and ran it for about 10 minutes. I still had the hood open. I waited til it got to 200 and turned the fan on and heat on full blast. ran that for about 5 minutes, brought it down to right around 190. that's great. i closed the hood, shut the heat off, and it started climbing again. got to 205 and was still going up very slowly. So, i am going to go take it on the highway and run for about 20 minutes, come back, drain and flush the system like 2-3 times and then put the water wetter in with straight water. And go from there.