TedH

Please advise regarding the best value in exhaust gaskets for my SBC with Hedman headers. I used the paper style but when I pulled the headers, the gaskets literally broke apart. I have installed copper at the 3" collectors. Should I go with copper for the exhaust gaskets?

I used 'stock' sized port exhaust manifolds that came with the headers. If copper, which Jegs or Summit P/N should I order?

OK. Got the prices and P/N's (Mr Gasket):
Summit - MRG-7151 = $34.95 + 7.95 Handling ('Free' Shipping)
Jegs - 720-7151 = $36.99 + 7.99 S&H


[Modified by TedH, 2:19 PM 12/19/2002]

Alwyn678

I personally used Percy's.......I would not go for value on such a part rather durablility , longevity and most of all LEAK FREE
http://store.summitracing.com/defaul...d%3D9%26s%3D86


[Modified by Alwyn678, 2:33 PM 12/19/2002]

TedH

Which is correct for a stock Chevy with Hedman headers; square or round port? Does it matter?

Ryan77

Definetly copper, I'd get fel-pro's :yesnod:

Metal Wulf

:iagree:

gkull

I've always had good luck with Fel-Pro blue steel. You buy the gasket that fits the head port. They also come as D port shape which I use.

ED DINAPOLI

The best gasket is no gasket. High temp silicone. No compression of the gasket to loosen fastners. No weak spot in gasket to blow. Try it, you won't use gaskets again.
Ed

Lt1er

Ed I might be all wrong! But I'm thinking that you really need some gasket. For expansion and contraction. Even a slight heat barrier. I use Fel-Pro blue steel also with a thin coat of Permatex red on the motor side. So I can pull the headers and the gasket stays in place. Id say mine are over 5 years old.

nunus79

Maybe true when the header primary pipes are larger than the head port size, BUT, if the header pipe is smaller, then the gasket to use should match the header. :troll

Marks69BB

Percys with stage 8 locking header bolts. There is no better combination for longevity and reliability. Once you put the stage 8 bolts on there your original torqued bolts will be retained and the percy's gaskets will not leak.

ED DINAPOLI

I can not take credit for this idea. I only know that a very old friend of mine who has been building race engines since the 50's and who has taught me most of what I know about motors, told me this trick. I have been using headers for years with no gaskets and no leaks. All I can tell you is that this technique works. If I did not try it and have good success, I would not recommend it to anyone.
Ed

Chris69

I just installed the Percys with Stage 8 bolts on one side tonight. We'll see... I have D port heads and round Hedman (only thing I could find with all the emissions stuff I needed). I initially ordered the square port gaskets and had to get the round port instead. The Hedmans are not ground flush with the flange (yeah, I know...) and it didn't look like the square port gaskets would have sealed them. Mark, I hope you had just as much fun as I didn't getting the Stage 8's installed. Maybe those BB headers have more room? Is there ANYTHING easy to do on these cars? :smash:

OBL1V1ON

Youve really never installed gaskets with you headers ED?

ED DINAPOLI

I did in 1968, on my 67 vette. This was before I was taught that they only caused problems.
Ed

OBL1V1ON

so, no gaskets between the motor and the headers or between the collector and the pipe?


[Modified by OBL1V1ON, 11:34 AM 12/20/2002]

ED DINAPOLI

Between the head and the headers.

Marks69BB

Nope Chris, there was NO room and it was a PIA to get the bolts torqued and oriented to get the clips on. I just hope I won't have to do it again real soon. Can't wait to hear yours when you get it all done! :cool: