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Older engine compression 850

posted by  SHarvey on  Sat Dec 4 00:18 CST 2004
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Group,

Does one expect a significant drop in compression in a properly running 850 engine after 100K miles? How about 200k miles? I had a junkyard measure compression in an engine I was considering, and they got about 170 psi, uniform within 20 psi, on the 5 cylinders of the B5254FS. The specification for the engine says it should be over 200, I forget exactly what.

Is this lower compression acceptable. I actually wonder if they just spun the engine up, and did not run it. I would guess that if it has been sitting for a while, if it is not run in to get good oiling, that you might get a lower compression reading.

Any comments?

Thanks,
Harvey






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New Older engine compression [850]
posted by  SHarvey  on Sat Dec 4 00:18 CST 2004 >


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