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Porsche_monkey Porsche_monkey is offline
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Join Date: May 2001
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Tim T:

I think this is a magnesium case issue, from what I've read/surmised this is the result of the case twisting and distorting, over the last 30 years, on an engine that was marginal to begin with.

I'm sort of hoping Wayne or someone with case machining expertise will chime in, but I suspect that the bore in this area is usually cleaned up when the cases are sent for align boring.

Of course this leads to the question: If this is normally done how do they sleeve it back to 85 mm?
Old 06-14-2004, 06:25 PM
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