[TR] TR6 tranny sound?

[Wbeech]

How's the clutch feel?  Maybe some contamination?

Sent from mobile Bill

On May 15, 2012, at 5:00 PM, Tim Gaines <mtgaines at presby.edu> wrote:

> I thought I was leaving for a nice drive of about 150 miles in the TR6 a few
days ago, but I didn't get farther than the gas station before some nasty
noises turned me right around.  When taking off from a stop I get a crunching
sound plus a "zzzup" thrown in once in a while.  My first thought was that I
had a stone or two from my newly graveled driveway sitting on top of the drive
shaft.  But I also thought it could be the tranny or the differential, and I
didn't want to take any chances out on the road.  I got home okay.  In fact,
the car ran smoothly once up to speed.  It only made the sounds at takeoff.  I
got it up on jackstands and couldn't find any evidence of stones or loose
flange bolts at either end of the drive shaft or at the rear axles.  I also
couldn't reproduce the sounds with the wheels off the ground, either with the
rear  wheels under power or by turning the front ones by hand.  I also
couldn't feel or hear anything when I turned the rear wheels by hand or the
drive shaft with a wrench on the flange bolts.
>
> When I got the car on the ground and found that it still made the sounds (no
lucky fix!), I started thinking it might be a disc brake pad issue.  It seemed
like the sounds were coming from the front.  Today I replaced the pads and the
nasty looking anti squeal shims.  In the process I rotated the rotors with and
without pads in place and got no noises.  However, I did get something like
the "zzzup" noise when I deflected the rotor guard into the rotor while
turning it.  After everything was back together I made sure that the guard
wasn't touching the rotor before getting the car back on the ground.  Just
took a drive up the road, and nothing has changed; crunchy noises and "zzzups"
at takeoff, forward and backward, but fine after it's up to speed.  I think I
can feel a little something through the shifter when the noises occur, but I'm
not really positive about that.  I also think that the noises stop when I
disengage the clutch, but by the time I reach speed enough for that, the
noises are usually gone anyway.
>
> So folks, what am I up against?  Does a transmission make those kinds of
noises when it's failing?  Is there something else I should be looking at?
Thanks for any help you can offer.
>
> Tim
> 1974 TR6
> 1980 Spitfire
>
> ** triumphs at autox.team.net **
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