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1989 964 C4 Reseal Job

Engine

Vehicle Information: Year: 1989; Body Type: Coupe; Total Mileage: 120000;

Thanks for all your help Joel. Just a couple of clarifications: I mentioned in the previous that I had not over rev'd either on upshift or on missed downshift (ie 3 to 2nd instead of 4th).I am still curious as to why valve stem seals would work their way up the valve off the valve guide? The piston tops have very very slight circular arcs 1/8th inch outside where the valve might touch covered with carbon buildup. I would think if the valve was touching the piston it would continue to do so and to have a shiny matching spot on the valve and on the piston. The arc ridges look like something you would see on plastic mould-very minor.Thanks

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