[alfa] Re: alfa-digest V10 #93 4:10 differential

["George Schweikle" <schweikg@xxxxxxxxxxxxx>]

Hi John,

EP, huh?, what diameter tires are you using?. I made this change to my SCCA
DSP autocross Spider several years ago, and got a complete axle from a
Series 4 Spider (1991-1994) from the old Prestige Imports in Cincinnati (now
European Auto Specialists: Lee Scovanner 513-891-0450). The change moved my
2-3 shift point up around 8 MPH (at 7000 RPM with 22.3 in. diameter
Hoosiers). This is a good change: 3rd gear is still used but only on faster
courses, and 2nd is still low enough that 1st is not necessary. I sent the
unit to Jack Beck for LSD differential shimming, have you found any nearby
sources to do this?. The 1990 Motronic Spider is kind of a transition car,
and might also have the correct ratio, but you should be sure and count
driveshaft vs.axle revolutions  (You are best advised to keep your hands off
of your wife's Series 4 Spider).

Regards,

George Schweikle
Lexington, KY

>
> Date: Tue, 18 May 2004 19:32:59 -0700 (PDT)
> From: John Hicks <autoxr13@domain.elided>
> Subject: [alfa] 4:10 differential
>
> I'm running a '73 GTV in SCCA Solo in EP class and am
> running out of 2nd gear on almost every straight with
> my current 4:56 (41/9) differential.  Does anyone know
> which models/years used the 4:10 (41:10) lsd
> differential?  Or does anyone have one to sell?
>
> I'm located in Louisville, KY.
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