[TR] speedometer calibration

[Randall]

> Assuming that you did not change the Rear End gearing there 
> is no need to 
> re-calibrate the speedometer when installing an OD 
> transmission.

Actually, there might be.  If the OD came out of another car, or a late TR6
(J-type OD), the speedometer drive gears may be "wrong".  There are several
people selling ODs on eBay, claiming they are for Triumphs when they
actually came from a Volvo.  Volvos do not use the same drive gears.

Plus, the gearing changed between early and late TR6. IIRC the change
happened at the same time they switched from A-type to J-type.

Randall