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Re: Compression 150, 90, 75, 150 ....question (archive)

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Posted by Paul on June 25, 2001 at 19:20:50:

In Reply to: Compression 150, 90, 75, 150 ....question posted by Warren, Australia on June 25, 2001 at 17:57:23:

Probably a blown headgasket between 2nd and 3rd cylinders. Could be burnt valves as well, money on the headgasket though.



... on a warmed-up open-throttle plugless engine. And besides being a daily driver with no oil loss, according to MacCartney these engines shouldn't work with a compression less than 100 PSI!

After a squirt of oil into the combust' chamber, pressures are 150, 95, 80, 150.

-leaking valves, leaking bores?

-Guess I'm looking at both a head and block rebuild.

-I'm thinking about just a head rebuild but am I wasting my time?


TIA





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