As Geo says: do the math.
for 3.45: (1120/3.7)*3.45 = 1044
for 4.1:
(1120/3.7)*4.1 = 1241
But this all assumes you run the right size tires.
Also, didn't they switch to industry standard 1000 turns per mile
during the
TR6 run?
Dave
-----Original Message-----
From: Dean Tetterton
<tr3a58@verizon.net>
To: Triumph List <triumphs@autox.team.net>
Sent: Mon,
Oct 27, 2014 5:19 pm
Subject: [TR] TR Speedometer
On the face of
the TR speedometer's under the miles numbers, there
is a small number
printed. On the TR6 it is usually 1120. Is this the
number of revolutions per
mile the cable makes? If this is so the number
would indicate the ratio that
the car was built with. If the TR6 in the
US
is 1120 it would be for a 3.7.
Anybody know what a UK TR6 with a 3.45
have or a TR6 with a 4.1?
Thanks,
Dean T.
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