I could definitely concur with a tranny mount prob. I had this exact thing
happen to me once with an '80 B**ck. The threads were stripped out of the
casting and the tranny was hanging down just enough to cause the exhaust to
rattle. Heliocoil was the quick fix for me.
Dave
67 Haze Green Sedan
Covington, Wa.
----- Original Message -----
Sent: Thursday, February 10, 2005 4:49
PM
Subject: Re: IML: My 65 Le Baron is
vibrating!!
If you only feel this when you are driving, it probably isn't
engine related. Broken motor mounts would cause vibration anytime it is
running, as would tune up and carb issues. It could be more pronounced when
the car is in gear, but driving down the road should have nothing to do with
it.
The rear transmission mounts in these cars break. The result is an
odd heavy "bump" sensation when going around a corner, or shifting the weight
of the car from side to side. If this has been incorrectly fixed, then there
may be a direct connection between the transmission and the frame. Before
these mounts were being reproduced, some shops simply bolted through the mount
to hold everything together. The resulting feeling is not more pronounced on
one side of the car, but is a droning vibration at highway speeds.
A
vibration can happen if the exhaust system is "grounded" to the body or frame.
Check to make sure that your clearences are correct all around, particulary in
the area of the crossover pipe and the transmission support member. Again,
though, it shouldn't only happen when you are driving down the road. It would
happen all the time, or at least whenever the car is in gear.
If the
vibration only happens when you are driving, then you need to look at your
wheels and tires. It is also possible that your driveshaft is out of
alignment, or that your u-joints are bad.
I replaced the engine mounts
in my '65 Imperial twice. This is not an uncommon problem with those cars.
Usually one will break, and the engine will drop on one side. This is usually
due to oil and heat damage to the vulcanized rubber, or buying very old NOS
parts that have been sitting around for a long time. It should result in the
fan hitting the fan shroud on acceleration, or going around corners. If the
engine doesn't look level, then one mount may be broken. Only by brand new
mounts. There is a vendor selling freshly made mounts for our cars.
I
also should mention that Imperials will vibrate at certain speeds if the drive
shaft angle is incorrect. This can happen from changing the strength of the
rear springs, broken rear axle support struts, or removing the shims installed
by the factory and not putting them back in place.
Good luck, you will
get to the bottom of it, but it may take a lot of
troubleshooting.
Paul
In an email dated Thu, 10 2 2005 8:35:12
pm GMT, commenace@xxxxxxxxxxxx
writes:
>Just dropped in a newly rebuilt engine, trans, and steering
gear box. When I drove it home, the passenger side area seemed to vibrate with
the RPM's (the entire car actually, but it is rreally pronounced on the
passenger side), as if the engine is somehow rubbing against the frame. I
haven't given it a serious look yet, though I intend to this
weekend.
>
>Any Ideas what I should look for? Is it possible I
installed the motor mounts incorrectly, of course it's possible, how can I
tell?
>
>Any help would be greatly
appreciated.
>
>Thanx.
>John.
>1965 Imperial Le
Baron.
>
>
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