[Fot] TR6 Second Gear Scrunch

[Bill Babcock]

It sure sounds like a dragging clutch. Might be a warped plate.

On Dec 11, 2008, at 5:45 PM, Mark J Bradakis wrote:

> About a year ago I rebuilt a trans and A type overdrive for a fellow  
> here
> in Salt Lake City.  At that time we also installed one of TRF's 'Magic
> clutch kits' with a Gunst throwout bearing.  About a month or so back
> he brings it by the shop and has me drive it around.
>
> The gearbox works well, except that going into second gear you get
> grinding noises.  Upshifting or down, you get the noise.  Shifting  
> into
> any other gear is just fine.
>
> To me the clutch engagement seemed too close to the floor, and the
> transmission behavior was a lot like what my little Nissan pickup
> does on occasion.  In the pickup, I pull the floor mat out from under
> the clutch pedal to fix it.  I suggested that one probable cause was  
> the
> clutch hydraulics, as we did nothing to that last year at the time of
> the rebuild.
>
> Anyway, he brings the car in with a new aftermarket slave cylinder
> and an adjustable pushrod, which I installed the other day.  The 1st  
> - 2nd
> shifts are smoother, the engagement point is further off the floor,  
> but
> still grinding on 3 - 2 downshifts, though not as badly as before.   
> More
> bleeding and adjustment, the 3 - 2 noise persists.
>
> Pulled the cover off the gearbox, everything looks good inside.  The
> synchro has plenty of clearance, end floats seem to be fine, nothing
> amiss as far as I can tell from my contorted position under the dash
> trying to peer into the heart of the thing.
>
> Now what?  Anyone have some sure fire ways to determine if the
> grinding is due to internal gearbox issues, or simply a dragging
> clutch?
>
> mjb.
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Bill Babcock
Babcock & Jenkins
Billb at bnj.com
503.936.7660
www.bnj.com

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