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Picked up a B20B this weekend that has been sitting for years in a guy's garage. Did a leakdown test (dry) on each cylinder is showing about 8% leak. The leaking seems to be pretty balanced between the crankcase and the exhaust, slightly more through the rings though. The engine was dead cold.
My question is this: Normally a leak down is accomplished on a warm engine for optimum results and it probably goes without saying a engine that is in current operation. Is it a fair assumption that I have an engine that may even test slightly better with a few miles on it to "limber it up?
The overall condition is extremely clean, but not artificially so. ALL the original hardware is in place to include the original Volvo stamped hoses and smooth style clamps! It gives the impression of an engine with a modest amount of miles taken from a pretty well cared for car. If it is rebuilt it was done by someone in a careful manner The alloy parts on the timing cover and rear main seal still retain some of the shine of a new part.. they don't look reconditioned at all. Just looks like an unmolested original with some good honest road dirt. .
What do ya think? Continue to tear it down and check the bores and plastiguage the bearings?, I do think at a minimum I might pull the head and have hardened seats installed, which begs the question press ahead and put new rings and bearings in while I am at it? My natural inclination says don't rebuild an engine unless it needs to be done, then do it all the way. Just rings, bearings and the head sort of strikes me of shade tree work.
In for a penny, in for a pound????
Thanks
Mike
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