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Header Gasket Choice with Kooks

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Old Jul 23, 2007 | 07:24 PM
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Default Header Gasket Choice with Kooks

A set of Kooks headers have just been delivered, and included is a set of gaskets labeled: Manufactured for Kooks Custom Headers by Percy's. The gaskets feel like a thin metal gasket covered on both sides with felt of some sort. The label also state : This material withstands long term exposure to over 2000degree F.

I'm not so worried about the temp rather the seal!

I assume these are not the seal-4-good gaskets by Percy's.

Should I use these gaskets or a stock set of GM multi-layered steel or the actual Percy's seal-4-good?
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Old Jul 23, 2007 | 07:26 PM
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ive had a set of headers bolted up 3 times with gm gaskets, and they are working fine.
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Old Jul 23, 2007 | 07:38 PM
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Those sound like the Percy's carbon gaskets. I have the aluminum ones. They make good stuff.

http://www.percyshp.com/index.php?option=com_content&task=view&id=4&Itemid =31
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Old Jul 23, 2007 | 07:45 PM
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Thanks hammerhead, those XXCarbon ones are what were shipped to me (or something very close to it). Quite honestly though, these XXCarbon gaskets feel flimsy to me...but what do I know.

I only want to do this once, so it has to be right the 1st time around.

I'm thinking of going with the Seal-4-Good or Stock GM's - correct me of I'm wrong, but both of those choices are proven!
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Old Jul 23, 2007 | 08:34 PM
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No problem. I had similar findings with my research. I think the aluminum ones are great. They're softer and thicker than the stock ones to make up for any flange irregularites, but they're still multi-layer solid metal. I don't have any experience with the carbons, but my aluminum ones have been on for a while now and the seals are perfect.
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Old Jul 24, 2007 | 08:47 AM
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used stock gaskets here, no problems after 2 years
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Old Jul 24, 2007 | 08:53 AM
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I've always used the OEM gaskets
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Old Jul 24, 2007 | 10:25 AM
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I used the carbon gaskets that came with my Kooks and have had no problems with them. Installed ~2yrs ago
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I run fel-pro's with mine and have had Zero problems/leaks in a yr and a 1/2
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Old Jul 24, 2007 | 11:42 AM
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I just got some from Advance the other day (not sure what brand or anything), and one of them is leaking already. I just called the local dealer and ordered some OEM gaskets.
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Old Jul 24, 2007 | 09:17 PM
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Well, I went and ordered a set of the Seal-4-Good's from ls1speed, they'll be here on Thurs.

So, anyone want a set of the XX Carbon ones? I have a new set of headers bolts for sale with the gasket also (I'm going to use ARP studs with the Kooks).
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