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Best header gaskets?

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Old Aug 30, 2012 | 11:38 AM
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Default Best header gaskets?

I am replacing my hooker sidemounts, what gaskets are the best? I have heard the supplied ones are inferior.

Thanks,

Mike
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Old Aug 30, 2012 | 11:52 AM
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I've used the supplied ones and Mr. Gasket. One trick is to soak them in warm water for 10 minutes to soften them and create a better seal. Recheck the bolts after a few hundred miles. When tightening start with the center bolts and work your way out to the ends. Check them at least once a year depending on how much your drive.
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Old Aug 30, 2012 | 12:12 PM
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I've used preferated stock metal exhaust manifold gaskets for 30 years. Never had one blow and if they Start to leak just tighten it up
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Old Aug 30, 2012 | 12:16 PM
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Copper gaskets, what I used for my Hookers and never had an issue.
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Old Aug 30, 2012 | 12:28 PM
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I used the Percy aluminum gaskets. No leaks and they look great with my aluminum heads. http://www.summitracing.com/parts/PHP-66011/

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Old Aug 30, 2012 | 01:31 PM
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Originally Posted by hugie82
I've used preferated stock metal exhaust manifold gaskets for 30 years. Never had one blow and if they Start to leak just tighten it up
Originally Posted by Corey_68
Copper gaskets, what I used for my Hookers and never had an issue.
I agree with both of these, but the bolts are usually the problem. If you don't have them, invest in a set of locking header bolts
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Old Aug 30, 2012 | 03:40 PM
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I've always had good luck with Mr Gasket Ultra Seals. They look similar to standard paper gaskets, but actually a different material, with a metal wire mesh in them. Never had any of these blow out, and won't break the bank.
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Old Aug 30, 2012 | 04:18 PM
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went through this.... blew out many of gaskets.... but never ever this one.... it is about 4 or so layers of stainless steel plates set on top one-another. bolts loosen... retighten, and you good to go....
http://mr-gasket.com/mls-exh-gskt-sb-chev-squ-760.html
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Old Aug 30, 2012 | 04:46 PM
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Felpro is all I ever use, never had a problem with them, not expensive

If the block surface is flat and the exhaust flange is flat and the holes are the same size I really don't see how you blow exhaust gaskets out, what is blocking the pipe to make the exhaust blow through the gasket ?

Last edited by MotorHead; Aug 30, 2012 at 04:48 PM.
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Old Aug 30, 2012 | 05:18 PM
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Felpro perforated is what I've used with success.
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Old Aug 30, 2012 | 08:04 PM
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felpro may have more than one gasket that will fit but these are the only one's i will use after blowing out a few others.Fel-Pro MS9275B
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Old Aug 30, 2012 | 08:22 PM
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Originally Posted by MotorHead
Felpro is all I ever use, never had a problem with them, not expensive

If the block surface is flat and the exhaust flange is flat and the holes are the same size I really don't see how you blow exhaust gaskets out, what is blocking the pipe to make the exhaust blow through the gasket ?
It is because the bolts back out a little from all of the heat up and cool down. Then it is less resistance to blow by the gasket, than to push down the pipe an through the muffler. If left long enough, the gasket burns. Like I said above, invest in locking bolts or tighten them every time you think about it.
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Old Aug 30, 2012 | 10:40 PM
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Makes sense, I never really had that problem and I just use ordinary inexpensive header bolts, must be lucky, I have found a couple loose over the years but I just tighten them up because the rest of them are tight, Felpro has a metal instert, between the gasket material maybe that helps
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Old Aug 31, 2012 | 12:44 AM
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Originally Posted by billcarson
felpro may have more than one gasket that will fit but these are the only one's i will use after blowing out a few others.Fel-Pro MS9275B
i agree this is all i use on header,and for the flanges at the pipe trash the flat gaskets and get a 3" donut and put in there,no more spits
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Old Aug 31, 2012 | 12:51 AM
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Victor reins nitro seal, cheap & work good.
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Old Aug 31, 2012 | 06:32 AM
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
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Originally Posted by junkman123
i agree this is all i use on header,and for the flanges at the pipe trash the flat gaskets and get a 3" donut and put in there,no more spits
Can you get different port sizes, I got what looks to be the same style with my custom headers only made in one piece I thought it was a cheapo and used the blue Flepro 1405

Who makes that three piece gasket ?
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Old Aug 31, 2012 | 07:22 AM
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Felpro's steel core on top and Mr. Gasket aluminum at the collector. No leaks at all. Tighten them all up again after your first heat cycle and again after a 100 miles or so and you're good.

http://www.summitracing.com/parts/FEL-1444/

http://www.summitracing.com/parts/MRG-7421G/

Adam
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