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JK McDonald JK McDonald is offline
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Join Date: Oct 2003
Location: Texas
Posts: 912
Digesting Gravel -

Hey gbgastowers, Do not feel too discouraged with your initial engine tear down and inspection. It is not uncommon to find a surprise or two while trying to breath life back into a 928 project. The depth of the cylinder wall damage will obviously require a block replacement. I have seen a hard carbon and/or crud build up around the tops of the cylinders but I’ve not seen that much gravel digested in a bore. If you price out your time, machine work and parts for a rebuild you may find it to be more economical to locate a running engine to speed things up.

One other comment, if you prefer to build up an engine reusing your crank, rods and pistons in another block – the 928 engine internals are pretty much bullet proof. Even high mileage cylinder bores are often found to still be well within factory specs. Line up a gasket set, oil pump, timing belt set up, etc.... and have an experienced shop rework your heads.

Good Luck, Michael

Last edited by JK McDonald; 06-13-2010 at 05:26 PM..
Old 06-13-2010, 04:16 PM
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