Lord - more fairy tales being propagated!! Greg is right, but the other
comment is BS.
The mainshafts are different lengths (with the OD shaft being SHORTER
than the non-OD shaft), the OD plus adapter plate replaces the tailcase,
and the top cover has the lock-out switches. The main cases are the same
for OD and non-OD. Cheeeeez.
Dave Q.
TR3A w/ OD
(plus several TR4s w/ and w/o OD over the years)
> From Greg Petrolati:
> Cheez,I better not let my `4 see this post... Hell it's only been about 10
>years ago that I converted a TR4 box with a TR6 OD... sure the cases don't
>exactly mate... but it does work... and it doesn't leak where the two cases
>join (I suppose it's too busy leaking somewhere else):O) <
>
>> "The problem is that you cannot convert a non-overdrive transmission to an
>overdrive transmission simply by adding the overdrive box. The rear of the
>overdrive transmission casing is different from the non-overdrive, as far as I
>know. Also, the tailshaft, inside the transmission, is much longer on the
>overdrive transmission so that it can extend back into the overdrive box." <<
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