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Re: spedometer conversion

To: "Allen C Miller, Jr." <acmiller@mhcable.com>, <healeys@Autox.Team.Net>
Subject: Re: spedometer conversion
From: "Bob Spidell" <bspidell@pacbell.net>
Date: Mon, 27 Sep 2004 07:36:04 -0700
Allen,


I recently went through this exercise after installing a 3.54 rearend in my BJ8.

Your choices are:

1) have a specialist build an inline ratio converter
2) have the speedo re-geared

I opted for #2, done by Palo Alto Speedometer.  Can't help you on #1, but try a 
web
search on "speedo ratio converter" and you should get a few hits.  Given that 
17% is
kind of an oddball, you may need to go this route.


bs
********************************************
Bob Spidell         San Jose, CA        bspidell@pacbell.net
'67 Austin-Healey 3000             '56 Austin-Healey 100M
********************************************



>I put in a 140 MPH spedometer on the 100-M before thinking through the fact
> that the 140 speedometer is geared for 1120 turns per mile and the 120 mph
> unit is geared for 1325. Does anyone know a source for a different angle drive
> that would compensate for the 17% difference. I want to keep this in the car
> (it is NOS from Nissongers with 646 miles on it), but having just received by
> first speedometer calibration from the connecticut State Police @ $240, I am
> going to have to straighten this out, either with a new angle drive or by
> memorizing a lot of odd numbers on the tach.
> 
> Allen Miller

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