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Re: V6 Valve Cover Gaskets
Posted by Anders (more from Anders) on Sat, 21 Dec 2002 20:58:13
In Reply to: V6 Valve Cover Gaskets, Ron, Sat, 21 Dec 2002 18:10:16
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From a professional standpoint, it is no surefire way to fix the problem without re engineering the plastic valve covers.
What happens is that in the center of each cylinder head, the valve cover bulge out from the pressure of compressing the rubber gasket. This is a weak design in the plastic cover itself, and was corrected on the 9-5 model where they went back to aluminum covers. Unfortunatly the 9-5 V6 cover doesn't fit NG900 V6. You can actually see the rubber seal peaking out in the middle of the cyl head right after gasket have been replaced. And it only gets worse from there.
If the shop uses a thin layer of silicon it gets worse, because the silicon works as a lubricant allowing the valve cover to slide out even more.
One way to make it last a little bit longer is to use brand new valve covers when changing the gaskets. New covers are a little bit stiffer and holds up better, but not forever.
So don't be to hars on the shop, they just do as best as they can with what they have.
posted by 66.229.128...
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