I can vouch for this. I blew out the pinion gear on my '72 last summer, with
75k on the clock.
Yeah, it happened when I had the hammer down a little. (Well, maybe a lot.)
Don't reproduce this experiment at home.
Fortunately, I replaced the diff with a nice, low mileage '76 version.
--
Martin Secrest
72 TR6
73 GT6
Arlington, VA
Dave Massey wrote:
> Message text written by "Randall Young"
> >The rest of the drivetrain was designed to go behind a 150 bhp engine (the
> TR5), so should be no problem. I'd want to double-check the diff mounts
> tho, maybe even drop the diff to inspect, since it seems to be hard to know
> when they're about to fail otherwise.
> <
>
> There are those who maintain that the TR6 diff was a bit weak and my
> experience is consistant with this. The teeth on the pinion are not
> adequately hardened and have a tendency to fracture. I have a diff in my
> garage with just this failure. I suspect that the problem is spotty as
> some differentails seem to go on forever.
>
> At any rate, RIchard Good has a listing in his latest catalog for an
> adapter kit to fit a (modified) Nissan differential (with limited slip)
> into a TR6. And he also offers used, modified diff's for sale. The whole
> shebang comes in at an attractive price which is a fraction of what you
> would spend on a quaife. So if you have concerns about your differential
> you may consider this avenue.
>
> The transmissions from the later TR6's are the same ones used in the Stag
> (so I've heard) which is a heavier car with a larger, more powerful engine
> both of which will put more stress on a transmission and they hold up well.
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