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lucittm lucittm is offline
Manassas, VA
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Join Date: Apr 2007
Posts: 1,211
I was always curious about that 935 exhaust guide oiling mod. Is it just a gravity feed down to the exhaust valve? Any change to the valve stem seal? Is there any downside to this mod? Increased oil usage? Smoking out the exhaust pipe? I remember a different type of valve guide with a lip, maybe just to mark the difference in clearance.

It would seem that the oil would end up in the exhaust port, could that cause a carbon build-up issue? What is the recommended hole size to control the flow of oil?

1991 964 Polar Silver Metallic Turbo Coupe
Old 01-26-2009, 07:56 AM
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