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RE: Overdrive J Type

To: <triumphs@autox.team.net>
Subject: RE: Overdrive J Type
From: "Randall Young" <ryoung@navcomtech.com>
Date: Thu, 3 Oct 2002 12:36:35 -0700
> They have supplied a 8 start drive gear and a 20 tooth cog.
> Before I install
> these I would like the general opinion if these are these correct for what
> ever the differential ratio fitted to a non overdrive rigid axle TR4A. Any
> opinions?

Should be just right.  20/8 = 2.5 which is the speedo drive ratio used by
all TRs before about 1973.

The speedo heads were changed according to the original equipment tires and
differential ratio, so assuming your speedo head still matches your diff and
tires, all should be swell.

Randall

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