Actually, all 2000's were 3.7:1, not just the Solex cars. When I was at
Mike Young's place a few months ago, he had swapped in a specific Nissan
Maxima rear end which I believe was geared a bit lower than that. I
think it required a driveshaft modification but otherwise fit right in.
If interested, you can give him a call and ask for all the details. His
URL is www.datsunsports.com.
Phill Brook wrote:
>Arthur,
>I'm assuming by faster you mean less revs at the same road speed.
>Stock '66 is 3.9:1
>Solex 2000s are 3.7:1.
>That is a difference of close to 5%
>
>See if you can find either a complete centre or at least a crown wheel and
>pinion from a Solex car.
>
>If you want to go the other way, IIRC 4.1 diff sets were available in Datsun
>411 sedans, 510 wagons and 720 pick-ups. 4.375 was also available for 720s
>
>FWIW, S14 and S15 Silvias with SR20DET engines ran a 3.9 diff and 205/55-16
>tyres on 16x6.5 rims. That is about 6% larger than the stock roadster tyre.
>
>You could also try increasing the rolling diameter of your tyres but
>calibrating the speedo may be a problem.
>
>Once an SR20DET is on boost in low gears it goes to redline very, very fast.
>With cams, a 3" exhaust and 15lb of boost a 1250kg S15 is easily capable of
>getting to 60mph in less than 5.5 seconds. With stock sized tyres and diff,
>the above mentioned mods plus bigger injectors and aftermarket computer the
>S15 (and S14) was also capable of going up to about 165-170mph (mine was
>electronically measured at over 260km/h and still accelerating). I certainly
>wouldn't be game to push a roadster that fast ;)
>
>Regards,
>Phill Brook
>
>
>----- Original Message -----
>From: "Arthur R. Rockwell" <arthurrockwell@sbcglobal.net>
>Date: Wednesday, November 17, 2004 1:28 pm
>Subject: Differential help
>
>
>
>>Hi, list.
>>Any suggestions on the easiest, quickest and least expensive way
>>to swap out
>>the gears in my stock '66 differential to reduce the ratio and
>>make the rear
>>end faster in top gear? First gear seems a bit low & slow on the
>>swappedSR20DET/5-speed and the engine can handle higher gearing.
>>Thanks in advance.
>>Arthur Rockwell
>>'66 SPL311 SR20DET
>>North Hollywood, CA
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