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Brian in Michigan

S.E. Mi.

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Posted: 05/14/20 11:51am

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I changed mine over to headers about 10 years ago. Used my acetylene torches and got each bolt red hot then let it cool for a minute. Each bolt came right out. Are you sure its a blown gasket and not a cracked manifold?

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atikovi

Suburban Washington DC

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Posted: 05/14/20 12:12pm

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Brian in Michigan wrote:

Are you sure its a blown gasket and not a cracked manifold?

At this point does it matter? Either way it has to come off.

Krusty

Calgary, Alberta,Canada

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Posted: 05/14/20 12:57pm

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I would definitely be tempted to go over it with a stethoscope and figure exactly where the noise is coming from before I took it apart.

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Executive

California/Arizona/South Dakota

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Posted: 05/15/20 09:38am

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atikovi wrote:

Brian in Michigan wrote:

Are you sure its a blown gasket and not a cracked manifold?

At this point does it matter? Either way it has to come off.

Well, yes, it does matter. If the manifold is cracked, replacing the gasket won't fix your problem. [emoticon]

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atikovi

Suburban Washington DC

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Posted: 05/15/20 05:26pm

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Got it off today in less than an hour.

[image]

Didn't bother using any fluid as it's mounted with bolts and no way to reach the threads behind the manifold. Bolts came out without any issue. Which gasket should I use? This metal GM gasket for about $20?

[image]

Or these composite style aftermarket for half that for a pair?

[image]

okhmbldr

oklahoma city

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Posted: 05/16/20 12:51pm

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Great job! I think the composite gaskets would work just fine.

atikovi

Suburban Washington DC

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Posted: 05/16/20 03:17pm

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Turns out those are the wrong gaskets. This manifold has round ports and those gaskets are oval. Looks like I need a Fel Pro 1412 or Mahle 95100SG. Any idea what heat riser gasket it would take? The distance between bolts is 3 9/32" and the hole diameter is 2 9/16" but I came up empty.

[image]

Bird Freak

Dallas Ga.

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Posted: 05/16/20 03:48pm

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