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DBF |
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#1
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Member ![]() ![]() Group: Members Posts: 92 Joined: 29-August 21 From: Wisconsin Member No.: 25,865 Region Association: Upper MidWest ![]() |
I want to check my pistons before I just buy new ones. There is no scoring, and the ring lands measure well within spec, but I cannot find information on where to measure the piston diameter. If it's like other Mahle pistons, I know you have to measure "X" distance from the skirt. Is that true for the stock 94mm Mahle pistons? If so, anyone know how far from the skirt?
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DBF |
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#2
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Member ![]() ![]() Group: Members Posts: 92 Joined: 29-August 21 From: Wisconsin Member No.: 25,865 Region Association: Upper MidWest ![]() |
This is turning into an interesting engine project. The valve guides, especially the exhaust of course, were very worn which prompted me to go further pulling the engine apart. The pistons are in amazingly good condition, but the cylinders are very worn. I can make out two marks at the top of the piston stroke in the cylinders like the engine was run with two different deck heights. The rod bearings were scored a bit, but the crankshaft bearings looked good. The cam lobes were well worn, but the pushrods and lifters show little wear. The crankshaft and case are also well within spec. I can tell the case was split once before and I'm thinking someone did an economy rebuild back when these cars were inexpensive cars and used some just barely within spec used parts to save a few bucks.
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