[TR] speedometer calibration

[Jerry Van Vlack]

Then the writer had better know what he has before he asks for 
re-calibration otherwise what is the speedo shop going to use as a base 
line?

----- Original Message ----- 
From: "Randall" <TR3driver at ca.rr.com>
To: "'Triumph List'" <triumphs at autox.team.net>
Sent: Saturday, October 23, 2010 9:42 PM
Subject: Re: [TR] speedometer calibration


>> 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