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Re: How to tell which TR4 Ring & Pinion (ratios)?

To: jmwagner@greenheart.com
Subject: Re: How to tell which TR4 Ring & Pinion (ratios)?
From: Lenny Seidman <lseidman@erols.com>
Date: Mon, 10 Nov 1997 07:30:25 -0500
Cc: triumphs@Autox.Team.Net
Organization: de-zin
References: <34663747.D4E@erols.com> <34666C90.3AE8@greenheart.com>
Justin Wagner wrote:
> 
> Lenny Seidman wrote:
> >
> > Does anyone know if there is a way (serial no.?/stamping?) to tell which
> > gear ratio a TR4 axle would have without opening up the diff cover and
> > counting the teeth on the ring and pinion?
> > --
> > Lenny Seidman
> > Elkins Park, Pennsylvania, USA
> > email: lseidman@erols.com
> 
> If you're creative with a piece of chaulk... you can hand-turn the drive
> shaft... ONE complete revolution, while a friend/spouse counts how many
> revolutions it come out to on the outside...  as 3.8 and 4.1 are quite
> different... you can tell pretty quickly...
> 
> If I remember correctly, you have to keep one wheel from spinning at
> all... or was it... make sure they both spin equally?  hmmm...don't
> remember... but you'll figure it out... I've done it a number of times
> over the years... and they always came out to 3.8.
> 
> Justin


Justin,
Thanks for the tip. Unfortunately the both axles are out of the rear
assembly.
-- 
Lenny Seidman
Elkins Park, Pennsylvania, USA  
email: lseidman@erols.com

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