Jump to content

What sealant on exhaust manifolds?


Recommended Posts

Evening all!,

I'm Megasquirting a V8 so it's going to have a Lambda sensor in the exhaust.. I'm fitting tubular manifolds and have seen posts suggesting that sealant is a good alternative to the tin or fibre gaskets. I've also seen posts advising that lambda sensors don't like silicon.

I've bought a tube of Hylomar EAP5 which says its good for assembly and has a picture of a flange assembly on the front....

I've also got Tiger Seal but can't find a temp rating....

Has anybody got any thoughts or opinions, or suggest a more suitable alternative?

Thanks, Donald

Link to comment
Share on other sites

Just bare gaskets on the exhaust ports.. They get a tad hot....

Further down the exhaust use exhaust paste.

Don't use silicon in any part of the engine air intake system. It will cause issues with your lambda sensor.

There are lots of good silicon free gasket alternatives for plenum etc.


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy