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Old 04-27-2013   #1
LGAFF
 
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Default IH to head; Gasket Failure

Changing the alternator on my 92 I noticed that the oil catch can was milky. looked in the plenum, milky oil.

I checked the oil in the pan, no issues, checked the coolant, no issues

When I took IH off the head the gaskets were badly distorted and you could see were OIL and Coolant were mixing
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Old 04-27-2013   #2
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Default Re: IH to head; Gasket Failure

There were NOT Jerrys gaskets

They had been on the car since I did the original porting some time ago
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Old 04-27-2013   #3
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Default Re: IH to head; Gasket Failure

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Old 04-27-2013   #4
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Default Re: IH to head; Gasket Failure

Ouch....that's ugly. Lee, do you know the manufacturer of the gasket. Might help to prevent anyone else from having the same fate.
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Old 04-27-2013   #5
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Default Re: IH to head; Gasket Failure

I do know who made them, going to let them know the issue, they do some good stuff generally. Will see if they will switch material; I generally use Jerrys, those tend to be the best.


Stick with Jerrys
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Old 04-27-2013   #6
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Default Re: IH to head; Gasket Failure

nough said.......
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Old 04-27-2013   #7
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Default Re: IH to head; Gasket Failure

Looks like mine when I uses FO gaskets. I use a Permatex 2 around that area now. No more problems.
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Old 04-27-2013   #8
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Default Re: IH to head; Gasket Failure

Were all the bolts tight?
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Old 04-27-2013   #9
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Default Re: IH to head; Gasket Failure

Quote:
Originally Posted by scottfab View Post
Were all the bolts tight?
When you port the top end, the material between the coolant and the #3 or 4 primary runner is very small. The coolant seeps thru the the gasket pulled by the vacuum. So paper gaskets don't cut it. And thicker is not better. The Permatex or shellac works well.


Update: I meant to write #3 or #4 not 5 primary runners
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Former ZR-1 Registry - BOD
1972 Corvette 4speed base Coupe SOLD long time ago
1984 Corvette Z-51/4+3 SOLD
1992 Corvette ZR-1 Aqua/Gray #474 SOLD
1992 Corvette ZR-1 Black Rose/Cognac #458
2014 Honda VFR Interceptor DX

Last edited by XfireZ51; 04-28-2013 at 12:38 AM.
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Old 04-27-2013   #10
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Default Re: IH to head; Gasket Failure

Everything was tight....I had installed these prior to Dominics failure....must have been 3-4 years ago.
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