[Supras] Vibration

[Hacker J]

There are couple of (long-shot) possibilities I can think of, although the heat related part leaves me confused.

1) A broken motor mount might cause a weird vibration.  Easy enough to check.

2) Bent halfshaft, or bad halfshaft CV joint

3) Loose or broken bushings in rear knuckle . Especially check the no.1 arm ball joint.

4) The pressure plate diaphragm can shift on a hard launch and knock it out of balance. This is really only likely if you drag race or drive like a maniac on the street! :)
 
Jon
90T


----- Original Message ----
From: Bob <bob at hairballcreations.com>

Yep that is the one. I haven't pulled the front of a 7m down in years

I still have to decide what maintenance to do.  The timing belt or keep
chasing a vibration.

Has anyone noticed a heat related vibration associated with the clutch?  I
can make the clutch shutter a bit if I don't let off the clutch smoothly but
generally it works fine.

The vibration appears above say 50 mph and is pretty bad around 70 mph but
only when the car is warm.  Engaging or releasing the clutch doesn't change
it.

I've considered the fan clutch but it is tight and it feels fine.

I can shut down the motor and the vibration doesn't change noticeably. I
guess I could remove the fan clutch for a short time to test this.  The only
problem is that I'm in Miami and it won't be until mid winter that I would
feel comfortable that the car won't overheat.

I know it isn't the driveshaft or carrier bearing, tires, rims or brakes. 

Any Thoughts or suggestions would be appreciated.

Bob







       
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