Mark wrote:About a year ago I rebuilt a trans and A type overdrive for a fellow
here
in Salt Lake City.
Mark,
My experience has been that if all other gears shift fine, then the offending
one probably has a worn blocker ring or the syncro engagement teeth on the gear
are rounded off. A dragging clutch could cause the excess wear to the blocker
ring or it could be the driver not disengaging the clutch properly. It could
also be junior wear. (the guys kid is beating the crap out of it.)
Ken Suhre
--- On Thu, 12/11/08, Mark J Bradakis <mark@bradakis.com> wrote:
> From: Mark J Bradakis <mark@bradakis.com>
> Subject: [Fot] TR6 Second Gear Scrunch
> To: "'Friends of Triumph'" <fot@autox.team.net>
> Date: Thursday, December 11, 2008, 9:45 PM
> 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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