Exhaust Manifold heat - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-29-2005, 04:55 PM   #1
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Default Exhaust Manifold heat

if u have a leak at the gasket will temps under the hood increase??
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Old 06-29-2005, 04:59 PM   #2
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Our manifolds don't have a gasket on the manifold flange. They do have the donut in the crossover flange and DP flange.
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Old 06-29-2005, 05:09 PM   #3
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To answer the if you have a leak will temps increase...yes. they will.

Where'* the leak dude?
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Old 06-29-2005, 05:14 PM   #4
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Quote:
Originally Posted by BonneMeMN
Our manifolds don't have a gasket on the manifold flange. They do have the donut in the crossover flange and DP flange.
u sure about that????
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Old 06-29-2005, 05:15 PM   #5
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Quote:
Originally Posted by BillBost37
To answer the if you have a leak will temps increase...yes. they will.

Where'* the leak dude?
not sure yet tryin to figure out y its so hot under my hood with both fans running
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Old 06-29-2005, 05:29 PM   #6
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There is no gasket from the factory. You can get gaskets for them, however.
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Old 06-29-2005, 05:48 PM   #7
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Yeah, mine is gasketless also. It is also gasketless on the doughnut sections also, yet it'* still leak free


-justin
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Old 06-29-2005, 05:53 PM   #8
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There is a gasket that goes from the exhaust manifold down pipe to the cat.

The one in my 93 went bad. It wasn't an issue with heat, but an issue with noise when the engine was under load.
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Old 06-29-2005, 06:31 PM   #9
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Kenn...I think it'* just summer time giving you the extra heat.
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Old 06-30-2005, 06:49 PM   #10
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Default heat

agreed......
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