Hi James,
Any speedo can be adapted to work with any dif ratio and tire size with a
device that will gear up or down the transmission gear output. This is done
all the time with 5 speed conversions. A typical Japanese transmission is
geared to output 1000 revs per mile, so clearly it will have to be sped up
some to match the speedo head requirement of lets say 1410. Either that or
you'll never get your car up past 55 on your speedo readout!!!
Also, be aware that a 35 year old speedo head may well be on it's way to
needing a rebuild. Good speedo shops can rebuild and calibrate it properly
to it's requirements and then a speed changing device be custom geared to
make it read proper MPH.
Later, Paul A
----- Original Message -----
From "James Gruber" <thistle_3619 at yahoo.com>
To: "Spridgets Digest" <spridgets-digest@autox.team.net>
Sent: Monday, March 29, 2004 5:08 AM
Subject: Speedo Markings-Which one is which? Telling them apart.
> Located a speedo from a '70 Spridget with a 3.9 rear end. Unfortunately
it's located across the pond in England. Price is right and shipping is
reasonable, so its doable. In my search for a correct speedo to fit Bugsy
here's what I've been using as a reference info sent from Paul A..
>
> Anyone got a correct speedo for a 3.9 read end they want to sell or trade
for a working speedo for a 3.7 rear end.
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