John, do you know what year the OD is from?
For some reason I thought that all the TR6 speedos had the same calibration:
1000.
What is the calibration printed on your speedo?
Probably you could get the correct speedo drive (at the OD) for your speedo
and correct it. Otherwise get the correct speedo....
-Tony
>Date: Thu, 10 Jun 2004 22:53:18 -0400
>From: John Mitchell <jmitch@snet.net>
>Subject: Speedometer error with overdrive
>
>Hi everyone. I put in a "J" Type overdrive in my 76 TR6 and I now note
>about a 15 percent error in the speedometer. I now realize that the
>speedometers for early and late, late models were different and had
>different gearing. I also went to 205-70 15 tires but that would only
>be a 1 percent error. What do I change, driving gear, driven gear or
>get an earlier speedometer. Speedometer seems like the easiest, but how
>difficult is it to change the other 2 items. I really like the
>overdrive, seems like the engine noise just disappears when engaged.
>Thanks in advance for any help. John Mitchell 76TR6 BRG
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