Exhaust leak

[yernkie]

I have a 2001 400EX with a full Yoshimura RS3 exhaust. Long story short, one of the flanges on the headpipe that bolt to the head is tweaked a little (yes, it was my fault), so it will not tighten properly to seal up. I tried removing the exhaust, bending it back, new copper gaskets, studs, and nuts, but it still leaks out of one side because I cannot get it bent back true enough to apply pressure all the way around the end of the headpipe. I even tried putting a brass spacer behing the flange, but it did no good. Any thoughts? I have been battling this all season and I am ready to just throw in the towel and get a complete new exhaust.

[gcart2]

jb weld and duct tape =)

[zrpilot]

I would take it off again and use an oxy-acetalene torch to heat it up and bend it straight.

[my88r]

its going to be hard to get that back into shape. you can find stock headers fairly cheep that way you get prefect fit.