| GMC Intake Gasket Lore [message #111749] |
Wed, 12 January 2011 11:20  |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
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I was idly wondering who discovered that when putting on a manifold gasket, a smart GMC guy was supposed to throw away the molded rubber gasket for the valley ends and squirt a wad of RTV on the skinny little metal dam, perhaps even dimpling the manifold and the valley ends.
Have there been reports of failure of the rubber gaskets? Or is this like the "Drink 8 glasses of water a day," rule that we have discovered has no basis is science.
I ask because after putting the intake on twice (see Oil Sucking 1 & 2) I have dutifully laid aside what appear to be splendid gaskets and smeared gooey RTV down twice. (I got to clean it up twice, too.) During the last effort, I nicked a place setting the manifold in, in back probably with the low hanging bottom plane, and had to re-goo. I must say I looked longingly at the preformed gaskets at that point.
So, does anyone know where the disdain for the formed rubber gasket started? Apparently Fel-Pro and Mr. Gasket have not gotten the news. Maybe the RTV manufacturers suggested the idea. *smile*
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
[Updated on: Wed, 12 January 2011 11:22] Report message to a moderator |
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