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Exhaust manifold to exhaust piping sealer?

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Exhaust manifold to exhaust piping sealer?

 
Old 10-07-2010, 11:22 PM
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jwillman
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Default Exhaust manifold to exhaust piping sealer?

WSM does not discuss much of anything about the exhaust. I disconnected the exhaust pipes from the manifold to do some clutch work. I have new gaskets on the way. Do they install dry or is some kind of sealer recommended?
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Old 10-07-2010, 11:30 PM
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Johan928
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Dry. :-)
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Old 10-07-2010, 11:42 PM
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use new bolts from ACE ,
the gaskets go on dry,
use antiseize on the new bolts ,
use steel bolts,
not stainless
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Old 10-07-2010, 11:46 PM
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Originally Posted by Mrmerlin View Post
use steel bolts,
not stainless
Reason why? Just curious.

I like using the copper "sealing nuts" (not sure the technical term) on exhaust parts.
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Old 10-08-2010, 07:17 AM
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you can use the 12mm copper nuts with the steel bolts
The stainless bolts are going to seize,
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Old 10-08-2010, 07:33 AM
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On older cars in the UK it was quite common for the exhaust
manifold to be secured with special manifold nuts.
These nuts were made of bronze (I think) or other yellow metal
alloy but not copper as this would be too soft.
The nuts themselves were deeper than standard steel nuts to
compensate for the metal being softer.
For whatever reason I have always found these nuts were
pretty easy to release whereas steel nuts in the same situation
would be seized solid. As a matter of routine I would always
replace exhaust manifold and exhaust joint nuts with these
when working on any car.
These special manifold nuts are still available from companies like
Eastmans or Frosts both specialists in supplies for classic car restoration.
http://www.frost.co.uk/result_search.asp
Search under manifold nuts.
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