Engine is all back together. Runs and sounds ok. Exhaust leak at No,8 and no, 7. I can hear it and feel air. Heads been just redone, machined etc. CMI headers may be out of flatness tollerance.
Best way to fix?. Sealeant? and if I use sealeant what to use? or double gasket?
Any ideas?
Thx
P

A thin layer of high temp copper rtv and good gaskets like mr gasket ultra seal's

I got the Merc gaskets. I willl try to use some copper RTV, but wondering is there anything better out there?
Thx
P

Use the Mr Gasket ultra seal. They are SO good I reuse mine. The grafite gaskets don't tear and seal great.

Where do I get them?
Thx
P

couldn't tell ya - I havn't bought a set in years - I reuse mine. But my engines havn't been out of the boat in a long time.

Summit Racing or Jegs should have them.

Either of these are super quality gaskets

MLS multilayer Merc racing choice

http://www.cpperformance.com/p-11895...d-gaskets.aspx

Copper style

http://www.cpperformance.com/p-11790...ound-port.aspx

Graphite style

http://www.cpperformance.com/p-11727...502-chevy.aspx