Headers Leaking, What can I do ?
06-16-2007, 12:14 AM
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Headers Leaking, What can I do ? Just installed new 383 & can't get my jet hot headers to seal ? Do any of you guys use rtv sealant on the header gaskets? Trird copper gaskets & just replaced them with GM layered gasket. The GM gaskets didn't leak as bad. 
06-16-2007, 03:21 AM
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Using lock washers? Thicker gasket maybe? Re-tighten your header bolts after first install and driving around? How may I ask do you put on the gaskets? Best way I have heard is to use masking tape and tape them to the header then bolt them up...
06-16-2007, 08:54 AM
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Fel-pro definately thr way to go. I tried those Percy's ded soft aluminium and the carbon fiber ones. Both sucked. With the fel-pro after I installed them I left the car run about 10 minutes, then cool down and retighten all bolts. I would then drive the car on short 8 - 12 mile trips a few times the n recheck them. Then maybe every month or so I would check them again. Have had no more issues.