I guarantee if you drive any car in 5 th gear(Overdrive) you will be
replacing the clutch, much sooner than you should. Not to mention the extra
load on the motor and gears. Now if 5th gear was the final drive ( One to
One) then it would be feasable. Pat
-----Original Message-----
From: Dat2000srl@aol.com <Dat2000srl@aol.com>
To: datsun-roadsters@autox.team.net <datsun-roadsters@autox.team.net>
Date: Saturday, February 10, 2001 2:08 PM
Subject: Re: Gas Mileage
>Perhaps Mike is correct about the efficiency and torque, etc., But I would
>think the Nissan engineers took this stuff into consideration when they
>decided how to gear the car. Or do you suspect they just threw the 5th gear
>in there as a feature? Maybe someone out there knows the answer, but I
>believe 5th is most efficient at highway speeds. I have owned several cars
>with a 5th gear, they all seemed more efficient in 5th. even a dat B-210,
it
>would get 50+ mpg in 5th at 60 mph, and I know that was not even close to
the
>power band, the engine was only revving about 2000 rpm. There was a test on
>the efficiency of the B210 and I remember the result were as such:
> 70 mph.....5th gear......31 mpg
> 60 mph.....5th gear......42 mpg
> 50 mph.....5th gear......51 mpg
> 40 mph.....5th gear......62 mpg
> 30 mph.....5th gear......70 mpg
>This was published in Car and Drive in 1980, I don't remember the month,
But
>I had the car at that time and found their finding very accurate. Of course
>the B210 is not a roadster so your results may vary!
>Larry
>69 2000
>Ravens country
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