Charlie-
A few thoughts-
What is the oil pressure? Hot and cold....., hi speed,
idle.
What did it sound like the last time it ran? ( ie 15 years
ago)
at an idle, pull off each plug wire (one at a time). if
the noise changes significantly, ( ie goes to a double knock or
disappears, it may be the Conn rod bearing for that piston.
You can pull off the oil pan with the engine in place and
check for spun Conn rod bearings/ galled crank surfaces,
etc. It is possible to check the center main bearing, but the F & R mains
are a bit of a drag to
pull out and replace from underneath. ( much bigger job)
Strangely, years ago the two bolts that held my camshaft
sprocket loosened up, ( yeah, my dumbass mistake)
and the noise/speed relationship was quite similar to yours. Eventually,
the bolts sheared off and the cam chain and sprocket punched
through the timing chain cover. ( not pretty.) Unlikely, but these are
British cars.... stuff happens!
Good luck,
Bob Westerdale
59 3A TS 36967
charles dubois <duboistr3@yahoo.com>
Sent by: owner-triumphs@autox.team.net
07/02/2003 12:00 PM
Please respond to charles dubois
To: Triumphs <triumphs@autox.team.net>
cc:
Subject: new lister here
Hello,
My name is Charlie DuBois and I am finally trying to get my 58 TR3 going
again. It has been about 15 years since it was last used.
I have been observing this list and I see where one can learn a great a
deal.
Currently the TR starts fine, has the same compression in each
cyclinder(170 PSI) but it has a very distinct knocking at idle. The
knocking goes away as you accelerate and it is completely gone when you
reach approxiatemately 2500 RPM. It returns as soon as you let up on the
gas.
I am guessing it may be a bearing problem. Is it more likely connecting
rod bearings or main bearings?
I have not done that kind of work before but part of the reason I like
this car is because I get to get dirty and learn new things. So can I get
some advice on what the problem may be and what steps can I take to fix
it.
Thanks!
Charlie DuBois -
Poughkeepsie,NY
58 TR3 - 31682E
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