[Fot] TR intake gaskets

[Anthony Parker]

What does "blowing out" mean for an intake gasket?

Is it just falling apart from lack of support/clamping?

Or, is it pressure from a return pulse due to valve closing?

Or, is it lots of backfiring?



________________________________
From: Fot <fot-bounces at autox.team.net> on behalf of yellow04 via Fot <fot at autox.team.net>
Sent: Wednesday, April 9, 2025 8:33 AM
To: FOT <fot at autox.team.net>
Subject: Re: [Fot] TR intake gaskets


My money is on this one... Blowing out the bottom of the intake gaskets means you didn't get nearly enough pressure (if any) from that pesky lower mounting stud and clamp. I have found if you use anything other than a stock intake manifold and stock exhaust manifold, you must scrutinize the area where the clamps will sit to ensure the height is very similar. Or, modify the clamps by welding on something to make sure when the clamp rests on the appropriate bits of the intake and exhaust manifold, when the nut is tightened it puts equal pressure on both manifolds. Obviously, the mounting face on each manifold needs to be flat. Assuming you have everything in order, there is no reason a stock manifold gasket will not work, I have run them when I could not get my hands on the HD gaskets and they worked fine for me.

Last thought, the nuts that hold the manifolds on are notorious for loosening up in time, and especially after the first few heat cycles. And with everything installed, getting to the two bottom nuts can be a pain. But, failure to keep them properly torqued leads to blown out gaskets.




On 2025-04-09 06:55, vfracing--- via Fot wrote:


Lyman;

 another possible cause is a mis match in the thicknesses of the intake and exhaust manifold flanges.
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