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B20F compression-test result: 145, 145, 150, 155 140-160

posted by  Don Foster on  Mon Sep 15 01:10 CST 2003
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last visit: Sun Oct 5 11:53 CST 2014
[RELATED]

That's not a leakdown test......

It's a "wet" compression test.

And it's a good way to identify if the slight loss in compression is due to rings or to valves.

The pushrod engine (B20) is somewhat more prone to burned exhaust valves than the OHC engine (B21/23/230).

I had two '75s and liked them. One was a 245 that saw about 435k miles, though it had one overhaul and two valve jobs during that time.

Watch for rust.
--
Don Foster (near Cape Cod, MA)






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