If you plug in the 1600's 1.00 top gear ratio and a 3.889 rear end (which was
stock) and
use a rolling circumference of 72.9 inches (I don't remember how I got to that
number, and
I didn't capture the calcs in my spreadsheet), you find that 3500 rpm in top
is about 62
mph, vice 72 mph for the 2000 running in an overdrive .852 5th gear.
Gary McCormick
San Jose, CA
Adam Bradley wrote:
> I don't think the 1600/4-speed turns at only 3500rpm at 60mph - more
> like 4200-4500, especially if you have smaller tires. You 2000 owners
> take 5th gear for granted...
>
> --- JRDMF@aol.com wrote:
> > Jeff:
> >
> > Sometimes when the rear bushing on the tach indicators wear, they
> > move the
> > magnet assembly inside the unit closer to the drag plate causing the
> > tach to
> > read fast. When working properly the tach usually spins at about 3500
> > RPM at
> > 60 MPH. (Give or take a little.)
> >
> > Jon
> > Huntington Beach, Ca.
> >
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> >
>
> =====
> Thanks,
>
> Adam Bradley
> '70 Datsun 1600 Roadster SPL311-28181
> '66 Datsun PL411 sedan PL411-022447
> http://www.picturetrail.com/abend
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>
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