[TR] high engine rpm

[KURT JOHNSON]

http://people.umass.edu/tcroy/articles/differential.htm



--- acs25m at swbell.net wrote:

> I own a TR250 that I am having problems with. The
> car had 185/65r 15 tires
> on it when purchased. I knew that these were not the
> right size tires and it
> was causing my Speedo to be off. Well I recently
> purchased replacement
> 205/70r 15 tires and with my wife pacing me in
> another car the Speedo is now
> correct. My problem is that the engine is still
> running at a higher rpm than
> I think it should. At 60 mph my tack registers right
> at 3500 rpm. I
> downloaded an excel spread sheet that was talked
> about on line and the only
> way to get that rpm reading would be with 4.55
> gears. I don't have an
> overdrive and highway driving makes the car
> overheat. Short of removing and
> disassembling the rear end is there any way to tell
> what rear-end gears are
> really in the car.
> 
> Any help would be appreciated,
> 
> John R Maneke
> _______________________________________________
> kajohns64 at yahoo.com
> 
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