In a message dated 10/13/2003 6:38:15 PM Eastern Daylight Time,
vafred@erols.com writes:
> If you holed a piston, the knocking noise coming from the engine would be a
> horrible sound, throwing/blowing oil no noise, Andy Mace as usual should be
> correct
Thanks for the vote of confidence, Fred...hope I can actually live up to it!
:-)
Seriously, though, I've had both scenarios. A holed piston in a Volvo B-18
engine made a truly horrible sound. But a broken ring will make no particular
sound at all, the more likely clue as to that having happened is your
neighbors
thanking you for the oil cloud from your breather that keeps the mosquito
population down in the 'hood. For a short period of time, they loved us
bringing
the Hardly Boys RaceSpit 4 to autocrosses for that very reason. :-)
What was really fun, though, was pulling out the offending piston and
watching 7 -- count 'em SEVEN -- pieces of ring fall out around the top of the
block
as the piston came out. It was even more fun as the piston continued to come
out...and there was no second ring at all. Turned out all four cylinders were
like that; apparently that was supposed to have been an old race engine
builder's trick. We had no idea it was like that, having never opened up the
engine
after acquiring the car until deciding it was time to fix the fogger mechanism
and get back some power.
FWIW, it all went back together with TotalSeal second rings, which also work
very well. (NFI, YMMV, member FDIC....)
--Andy Mace
*Mrs Irrelevant: Oh, is it a jet?
*Man: Well, no ... It's not so much of a jet, it's more your, er,
Triumph Herald engine with wings.
-- Cut-price Airlines Sketch, Monty Python's Flying Circus (22)
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