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Topic Review (Newest First)
09-25-2002 05:45 PM
slider in wa After three sets of gaskets i finally cut mine loose between the runners. No more leak!! Happy am i!!!
Slider in Wa.
09-25-2002 11:57 AM
dusterbd you amy also take a trick from the same pontiac guys i stole it from. cut the flanges in between the tubes, like say between the 1 and 3, and the 5 and 7. it helps the header seal better to irregularities in the head, and also takes out some of the warp possibilites. i doubt id have any leaks if i used header gaskets and not the regular exhaust manifold gaskets.
mike
09-25-2002 05:17 AM
Chevy_SS10 Thanks for the advise...I will give it a try
09-24-2002 05:55 PM
Super Streeter I agree,copper gaskets suck.Doubling up gaskets is a real bad deal because it only makes the headers warp more.I run a single cheapie paper gasket and never have a leak.If your flanges are warped you either need to straighten them or buy new headers,no gasket{s} will make them seal.You should start out by dropping the header down a bit and cleaning the head surface off until it is spotless,then do the same to the header,then install a plain old MR.Gasket whitie in there,and tighen down the bolts,Run the engine until it is hot and let it cool,then retighten the bolts.If it still leaks,you have a header problem,and no trick gasket in the world will hold up in the long run until you fix the headers.Good luck.
09-24-2002 09:10 AM
Weimer Personally I wouldn't have the copper header gaskets shoved up my ***** if I had room for a whole truckload.
I have never had good luck with them(and at $45/set...)
I have had excellent luck with the smashable aluminum gaskets. 1/2 the price and tons better than anything else. You can generally get the smashable ones at about any parts store around.They run about $20-$25/set. Also the collector gaskets are the same way.
Later,
WEIMER

[ September 24, 2002: Message edited by: Weimer ]</p>
09-24-2002 08:16 AM
MHenricks Check the impression on the gasket when the headers are bolted to the head. I have a set of headers that had to be trued.

What I mean is the header didn't leave an imprint all around on the gasket. I spent probably 3 hours trying to true up the headers, alot of filing & grinding.

Most headers will look straight when they're not bolted, but when bolted they will flex as you tighten the bolts. Usually the outer edges will make contact but the upper and lower portions will not.
09-23-2002 12:14 PM
Dave E Shank HEY CHEVY: I had header leaks like sin. I tried everything on the market. Best solution was composition gaskets with aluminim facing from NAPA for $ 8.00. It is good to get the ones that match the opening in the header, some gaskets are square and some are round. Let uknow what works for you. Good luck DAVE E SHANK
09-23-2002 11:19 AM
Chevy_SS10
header leak

When I installed my headers last time on my SBC, I used the copper gaskets, and made sure the o-rings were facing out (header side). However, my headers leaked...I don't know if they are slightly warped or what. Anyway, I have heard of doubling regular header gaskets...can you double copper gaskets as well? And if so, should I use exhaust puddy, and how much. I would appreciate it someone could help me out on this one.

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