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One solution that I have been toying to try with is
Posted by Anders (more from Anders) on Sun, 22 Dec 2002 12:18:43
In Reply to: Time for a new V6 poll:, michael p, Sun, 22 Dec 2002 09:36:33
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To use Silicon INSTEAD of the rubber seal. But you would have to cut the half moon parts of the seal and install them in their places.
Fill up the groove om cover with a nice bead of Silicon so that it sticks up about 1/8 over the cover. Use high quality Silicon.
Let it dry for about 15-20 min and places the V/C on the engine.
It's extremely important that no oil or grease is on the surface of cover or engine. The Silicon wont stick to grease (use brake cleaner).
When tightening the valve cover, the halfway hardened Silicon wont apply as much pressure on the V/C as the rubber seal do, but more form itself to the surrounding surfaces. Maybe the cover wont bulge out as much.
One drawback using Silicon though is that everything that is squeezed out into the engine will come loose and slowly fall into the oil sump. And it might plug up the oil pick up screen. So don't use too much.
Some American cars are using this kind of gasket solution from factory. The difference between those cars and the Saab V6 engine is that they use a much wider groove for the Silicon. Even looking at the Saab 4 cylinder gasket, you see that that one is much beefier compared to the V6.
I also don't know if the valve covers may move around too much during the heat/cold cycles, disturbing the sealant. Because when you get oil in under the Silicon OR rubber seal. It's no going back. The whole job have to be done over again.
One way to do it is to try on the front cover, since that one is easily accessable if it doesn't work.
Maybe someone would give it a shot.
posted by 66.229.128...
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