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T86951 T86951 is offline
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Join Date: Oct 2000
Posts: 495
I really don't know why the rings would need replacing with a head rebuild. My 86 NA 944 has 215,000 miles (daily driver) on it and I did a head rebuild about 170,000 miles due to a cam belt break and bent valves. My rings are original and I have 150 lbs on each hole. A 944 with regular oil changes have been know to go 400,000 miles on the rings I have read and heard.

The rings slide on the silicon cylinder walls, reyolds 360 I think they call it (aluminum and silicon mix is the way the block is cast with the aluminum polished away in the honing to leave your rings sliding on slick silicon). The rings last bout forever unless there is a problem otherwise I think.

I am no expert this is my experience and what I have read. Domestic and a 944 block are totally dif, no sleaves in a 944 block due to the silicon.
Old 03-22-2003, 08:38 PM
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