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Discussion Starter · #1 ·
getting an exhaust leak at the front and rear cylinder head. I have ported heads therefore I am using the small screaming eagle gaskets but I am getting a small leak. The nuts on the flanges are tight, when I did the upgrade 5K ago I replaced the flanges. My question is can I use two gaskets or high temp permatex to seal it up? Any other suggestions?
 

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try using the Novello copper gaskets I have never had a problem with them personally, and a good thing is if you are careful they are reusable
 

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Road Captain
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...two gaskets is not recommended......I would run from the permatex idea.
 

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The Anti-RUB
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You could try the regular HD Exhaust Gaskets. They have a cone shape, so it might make a better fit especially if the inlet on the header pipes on your exhaust are tapered. Good luck...
 

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Discussion Starter · #6 ·
petrock,
the stock gaskets blow the flow on ported heads, they would work great but they defeat porting the heads
 

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hammmitc said:
getting an exhaust leak at the front and rear cylinder head. I have ported heads therefore I am using the small screaming eagle gaskets but I am getting a small leak.
Forgive the newbie question, but how can you tell you have an exhaust leak?
 

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hammmitc said:
getting an exhaust leak at the front and rear cylinder head. I have ported heads therefore I am using the small screaming eagle gaskets but I am getting a small leak. The nuts on the flanges are tight, when I did the upgrade 5K ago I replaced the flanges. My question is can I use two gaskets or high temp permatex to seal it up? Any other suggestions?
If the end of the pipe is smooth and flat, and the exhaust ports on the heads are in good condition, then the pipes should seal properly. If they are not, then you have an alignment problem with the pipes.

Don't try to compensate for a poor fit by using two gaskets, sealant, etc. You are just covering up the real problem. Tighten the pipes at the heads first, then check the brackets for alignment. If the holes don't line up, then you will have to modify the brackets until they do.

By the way, are you sure it's the exhaust that you are hearing and not the intake sucking in the air? The only way to be sure the exhaust is leaking is to feel around for the leak while it's running, or by looking for soot trails. The bike will most likely be popping out the exhaust when decelerating, too.
 
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