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You have to check piston to bore clearance.... Posted by Walt [Email] ![]() ![]() In Reply to: Does anybody know for a fact, absolute fact that......., 900 turbo driver, Fri, 29 Mar 2002 21:57:59 Members do not see ads below this line. - Help Keep This Site Online - Signup |
SAAB precision-fits pistons to individual bores. According to the SAAB engine service manual ($17 from dealer), piston sizes are classified as AB, B, and C. this code is stamped on piston top, and also on deck surface of block. There is only 0.0017" difference between an 'A' and a 'C'. Bottom line is, you need to maintain 0.0009" to .0020" piston-to-wall clearance for Mahle pistons in a turbo application.
Soooo...they might fit. You may be better off using your cousins short block, not just the pistons. A rebore is pricey, as new piston sets are in the $300 range.
When I rebuilt my '88 8 valve, I had a light hone done ('glazebreaking') which had a negligable effect on bore size. I reused original pistons and still met spec for piston fit, with 168k miles of wear.
Walt
'88 SPG
'88 base
posted by 209.92....
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