John M.---With such few miles on the engine, I'd take it back to whoever
rebuilt it, and let them figure it out. If this isn't do-able, then you
can try using an engine stethoscope to possibly narrow down the source.
If you have to take off the pan, use a torque wrench set to 40 lb. and
check for a possible loose connecting rod (bolt). This can produce a
dull, hollow sound.
Other less likely possibilities include a cam follower that sticks in
its bore.
Look for anything that repeats, as the engine makes a full revolution.
(There's lots of them)!
Dick
From:
jmitch@snet.net(John Mitchell)
I have a sound coming from the lower
portion of the engine that I can only describe as a connecting rod
knock. It's not noticable when the engine is cold but becomes apparent
as things warm up. When I start the engine it sounds like everything
inside is rattling around, but then settles to a regular knocking sound.
If I pull the oil pan, what should I be looking for? The engine is newly
rebuilt with about 400 miles on it. Thanks John Mitchell 76 TR6
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