copper head gaskets and lower press. rad. cap?
09-02-2004, 09:26 PM
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copper head gaskets and lower press. rad. cap? when using copper head gaskets should the radiator cap be replaced with a lower psi cap to run a lower cooling system pressure??
what are the factors affecting this situation? (i.e. coatings , etc.)
what are the factors affecting this situation? (i.e. coatings , etc.)
09-03-2004, 09:05 AM
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Clark copper head gaskets told me to use a 7lb radiator cap. I got it from my local parts store (Napa). They also told me to run straight water for the break in period then put in the anti-freeze.
Last edited by c5ls1vette; 02-23-2006 at 10:09 PM.
09-03-2004, 03:53 PM
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be lowering the cooling system pressure, you are less likely to have cooland leaking from the passages to the outside of the head or into the oil holes (i.e. lifter openings) .
o a side note, i heard from some one local that if you use block sealer on your leak you will take care of it once and for all. i'm not sure i want to dump some of that stuff in a modern engine like an lsX. anyone care to elaborate on that fact? pro's , cons?
o a side note, i heard from some one local that if you use block sealer on your leak you will take care of it once and for all. i'm not sure i want to dump some of that stuff in a modern engine like an lsX. anyone care to elaborate on that fact? pro's , cons?
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09-04-2004, 08:16 PM
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It helps relieve pressure being built up in the motor. My car is mainly for drag racing so I just put the 7lb radiator cap on as a precaution. I also put the tablets GM sells (Ac Delco) to stop leaks.
