Ball flange collector sealant?

[travis]

What can I use to seal a less than perfect ball flange collector to reducer connection?

[Kevin Johnson]

https://www.google.com/search?q=exhaust ... HgodpaUMGA

Some ideas...

[claysmoker]

I've had good success with the Ultra Copper.

[Belgian1979]

Not sure if it would help, but here goes : I've been looking at ways to solve leaking header collectors as well. I ended up buying a connection locally. It looks like the ball and flange type, except that it has a bicone between 2 flanged pipes. The piece originally came only in SS and I have a steel collector so I had to fabed a piece of pipe that would fit against the conical side of the bicone. As you can imagine and due to the type of tools I had available this was never perfectly leakfree. Since both pipes of this piece are slip over 3" types, I fit a regular 3" pipe inside the joint, so that the gasses would not come in direct contact with the joint.

[Adam65]

Best ones I've seen are the Flowmaster ball & socket collectors. Much thicker steel than any header mfr I've seen use. Only 2-bolt flange, but it is so beefy that I'm not sure how you could bend it. Huge improvement over the garbage 3-bolt ball & socket collectors that Hedman and most other headers come with. If you can, just cut off your old ones and spend the $100 on these.