Quote:
Originally Posted by ATL BRZ
Resonators are being discussed but TBD.
Pre-production part and literally the first one made; not worried about it with Grimmspeed gaskets.
FWIW I have a similar small imperfection on my JDL header flange. It adds character to a hand-welded piece. 
|
On my first Factory Five Roadster, I had a lot of trouble with one of the header flanges not being perfectly true and it didn't want to seal for very long against a head, and exhaust leaks developed. I tried "everything". I eventually found out about Remflex gaskets. I think they started as a father & son operation, good people. The gaskets are made of very thin slices of graphite, sandwiched together. They are thicker than regular gaskets (which was good for my problem) and they compress when installed. Supposedly they maintain some spring and that helps them keep bolts tight as well. The material they're made of withstands very high heat. Bottom line, I never had another exhaust leak. The cool thing is you can send them a gasket for a custom application and they will do a drawing and make it for you. And I don't think they charged much at all to do it custom - it ends up in their catalog. I ended up having header to sidepipe gaskets custom made, as they were notorious for blowing out.
So, if you do have trouble down the road, check these out:
http://catalog.remflex.com/
http://catalog.remflex.com/category_s/154.htm