nerfherder;88468 wrote
The head seems to be fine, have a bottom end knock, so a good block would probably do the trick
....
It was last started 10 years ago, ran well at that time, didn't blow any smoke or make any bad noises. I don't know if it's a 6 bolt or 8 bolt crank.
Couple of notes -
A bottom end knock could be a dodgy lifter, or could be more serious. If it's a dodgy lifter, you'll need a new cam (and new set of lifters too).
The six bolt crank is found in the engines made up until 1973. The 8-bolt crank is found in 1974 engines onward, and continued through to the B21. The 8-bolt crank engine uses the same bearing set as as the later B21, while the earlier 6 bolt crank engines use a different main and big end bearing set.
... oh, wait on, you've got that white 1974 144, right? If so, that makes things easy: Yours is an 8 bolt crank engine, with a K-Jet B20E. It should have a K cam (
which is different to an OHC K cam!) or possibly a D cam. The 3 speed heat production unit (aka BW35 auto) should be the version with the grey plate, type 321. Your tailshaft should have type 1310 flanges at both end (useful to know when you need uni joints) and the bigger rubber donut for the centre support bearing.
Extracting an engine from a 140 isn't difficult; it might be worth doing this and discovering the source of the knock. B20s are very robust and easy engines to work on, and they're hard to get wrong as long as one follows Volvo's very basic instructions.
