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General Category => General Discussion => Topic started by: wicks on February 12, 2025, 09:59:03 AM

Title: Better exhaust header gasket?
Post by: wicks on February 12, 2025, 09:59:03 AM
Is there a better one that seals tighter in an 850 LM1 head to header? Getting a little leak on the right side after reinstalling with new gaskets. Everything is aligned and torqued properly.
Title: Re: Better exhaust header gasket?
Post by: Antietam Classic Cycle on February 12, 2025, 03:12:27 PM
In the 42 years I've been riding and working on Guzzis, I've never found the need for anything other than the original type.
Title: Re: Better exhaust header gasket?
Post by: wicks on February 12, 2025, 05:53:43 PM
So I must have done something wrong there...can't imagine what.
Title: Re: Better exhaust header gasket?
Post by: 73 sport on February 12, 2025, 06:20:01 PM
    Are they the correct size? Check for nicks or dents on the gasket. Check for nicks or dents on edge of head pipe. If problem persists, use two gaskets. I also use nickel anti seize on the gaskets.
Title: Re: Better exhaust header gasket?
Post by: John A on February 12, 2025, 11:52:15 PM
I snug up the headpipes first , by themselves so the rest of the exhaust system does not influence the fit at this stage. Then I mount the rest of it, gradually getting into place. I use nickel antisneeze as well and I only replace the gasket if it gets squished too thin to seal. I make sure there is no bind on the system as I massage it into place to help eliminate cracks.
Title: Re: Better exhaust header gasket?
Post by: John Croucher on February 13, 2025, 10:45:21 AM
Maybe the stud is pulling out of the head.  Threads stripping.

Make sure exhaust is mounted tight down stream.
Title: Re: Better exhaust header gasket?
Post by: Stretch on February 13, 2025, 11:09:55 AM
Quote
If problem persists, use two gaskets.

Shade tree mechanic solution....  :thumb: :grin:

                                         -Stretch
Title: Re: Better exhaust header gasket?
Post by: chuck peterson on February 14, 2025, 10:35:21 AM
Quote from: Stretch on February 13, 2025, 11:09:55 AM
Shade tree mechanic solution....  :thumb: :grin:

                                         -Stretch

Ha! I was going to suggest there are two in there now causing a leak…it might take a dental pick to get them out. Smashed in there completely they can look like there isn’t one
Title: Re: Better exhaust header gasket?
Post by: bigbikerrick on February 14, 2025, 11:07:59 AM
Quote from: chuck peterson on February 14, 2025, 10:35:21 AM
Ha! I was going to suggest there are two in there now causing a leak…it might take a dental pick to get them out. Smashed in there completely they can look like there isn’t one

This was exactly the case ,when I first got my Convert. There were 2 gaskets, and you could hardly tell, after pulling the first one out, that there was a second pressed in there tightly.
Rick.