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Exhaust leak ?

Old 10-05-2012, 04:36 PM
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Default Exhaust leak ?

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
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Old 10-05-2012, 05:09 PM
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A thin layer of high temp copper rtv and good gaskets like mr gasket ultra seal's
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Old 10-05-2012, 05:42 PM
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I got the Merc gaskets. I willl try to use some copper RTV, but wondering is there anything better out there?
Thx
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Old 10-05-2012, 06:17 PM
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Use the Mr Gasket ultra seal. They are SO good I reuse mine. The grafite gaskets don't tear and seal great.
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Old 10-05-2012, 07:51 PM
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Originally Posted by Tinkerer
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
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Old 10-05-2012, 09:13 PM
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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.
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Old 10-06-2012, 01:59 AM
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Summit Racing or Jegs should have them.
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Old 10-08-2012, 09:24 AM
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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
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