No, the whole MGA pumpkin will not fit. Besides, the whole interface between
the axles and the pumpkin is differently sized. However, the ring will fit,
as is. The pinion sits in a different position than the TD pinion. Thus the
adjustment of the pinion is the key to success.
Thus the second requirement. The adjustment is achieved by grinding the
spacer behind the pinion head. This is to move the pinion into the same
relative position as it would be on an MGA. This requires a micrometer and a
dial gauge. If you really want to get fancy, a method to check pinion
preload would also be nice, but this can be made up with something as simple
as a fish scale.
No other "special" tools are required. Just knowledge and a good bit of
patience. The Cedarstrand book provides the first. You have to bring your
own patience.
Regards,
Lew Palmer
lew.palmer@uci.com
=====================================
->On September 25, 1995 8:54AM Lew Palmer wrote
->
->I hate to break it to you, but the standard ratio TD diff. is 5.125:1.
Even
->worse than you suspected.
->
Ouch ...
->You can put in a lower ratio gear set. The MGA used a 43/10 ratio and is
a
->popular conversion. Carl Cedarstrand wrote an extensive book on the
subject
->of conversion. It's available from Moss. It requires an MGA ring and
pinion
->and flange.
Is the 'pumpkin' on the TD the same as on the A? If so you could substitute
a
used A/B pumpkin (Moss Catalog Part #s for the A/B banjo rear parts are the
same) ... you may have to change the wheel gears to match the axle splines.
-> It's not a difficult conversion, but takes a lot of fiddly
->effort in setting the thing up correctly. I've been planning on doing
this
->for years, but have never found the occasion to take the car off the
road.
->
Thought that it took special tools to fit a new ring/pinion ....
Larry Unger ------>ungerl@reston.unisysgsg.com
|