Thread: Parts haul!
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Unread 03-31-2019, 08:38 PM   #7
GlenL
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Default Euro S engine block

I was checking out the engine block today. It looked like it had been exposed to some water in a couple of holes and the crank was seized. I cleaned out some crud and applied penetrating oil to the piston rings. It took a while but it finally broke loose. There looks to be some light corrosion in a couple of holes but not too bad. No obvious pitting. No scratches at all. I'm hopeful it'll be useful if the need arises.

One surprise is that the pistons are the early, lower-compression version. The notches are bigger than they should be in an M28-22 engine. I understand there was some part number bleed-over to the later engines. A check of the PET with engine serial number confirms that the engine should have the bigger-notch pistons. The later engines are rated at 10.4:1 compression ratio with the earlier engines being 10:1. But... The engine is turning and the bores look good. That tells me the pistons are probably good, too.
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File Type: jpg SBlockPiston1.jpg (176.3 KB, 1 views)
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1980 928S Euro x2
1987 944 N/A

Last edited by GlenL; 04-01-2019 at 10:39 AM.
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