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best diff and gear ratios for trackday box

 
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BigAl
P4


Joined: 06 May 2003
Posts: 2990
Location: U.K Surrey

PostPosted: Wed Aug 28, 2013 9:19 pm    Post subject: best diff and gear ratios for trackday box Reply with quote

Hi, as the title says.
I have the following box's

sud; both converted to 33 output shafts with electric speedo sensors for 33 too and notch cut out for CPS
1.3 overspun first gear
1.5 greencloverleafe no overdrive with failed diff

33
1.7 ser 3 16v box second gear failure

based on the info here
http://www.alfa-pages.co.uk/gearbox.php

is this good enough or will i need another box? if so which one to rob parts from to make the best box
what parts are interchangeable and what parts are not
OR
does anyone have one for sale?

Thanks
Alan
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x2 33 16v
pictures http://www.alfa-pages.co.uk/viewtopic.php?t=5203
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eagle3
Alfa 33


Joined: 11 Nov 2007
Posts: 402
Location: France

PostPosted: Thu Aug 29, 2013 7:41 am    Post subject: Reply with quote

I don't race but I think the later boxes(89 +) have more logical(better spaced) gear ratios.

The 1.3 box has a shorter final drive, same ratios.

I read somewhere on a french forum someone stuck a Quaife diff on a boxer box.. http://www.carb.fr/forum/viewtopic.php?f=34&t=10568
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Alfa33 QO 1984
Alfa33 1.3i.e. 1994
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BigAl
P4


Joined: 06 May 2003
Posts: 2990
Location: U.K Surrey

PostPosted: Thu Aug 29, 2013 10:38 am    Post subject: Reply with quote

he he, been looking at a quaife dif Smile since Iain said AHM can supply them
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