Gear box ratios

[miro-1980]

I have a 131  "abarth" 5 gear box . Does anybody have data on the gear ratios ratios?

Does anybody know how to determin the gearbox type and assign appropriate gear ratiosn to the specific ?

Help will be greatly appreciated.   
 

M

[bolger]

Gearbox ratios with the engine type can also be found in Haynes, at least to some extent.

[miro-1980]

Thanks,

My Haynes says it "covers all models 1975-1980" but only theoretically.

It lists only detailed technial data for 1.3 and 1.67 OHC and 1.8 DOHC.

Miro   

[bolger]

Get the full Haynes -85 version.

[Testament]

from the Fiat 131 mirafiori sport data and characteristic servicing instructions

1st - 3.612
2nd - 2.045
3rd - 1.357
4th - 1
5th - 0.870

reverse - 3.244

final drive - 3.9

[miro-1980]

Thanks !

[bolger]

Please follow the link to the Fiat 131 forum  in Polish:

http://www.motonews.pl/forum/?op=fvt&t=68421&c=78&f=25

[miro-1980]

Thanks  , interesting data ...

What I have collected and the discussion on the Polish forum clearly shows that there were many variations and no one seems to have complete data. Did fiat ever publish it ? 

Maybe Fiat should ! Maybe this is a good idea to ask them for technical documentation of this type ?

Anybody has contacts to Fiat corporate ?

[Testament]

All sport/racing and I think probably all 2L cars should have the ZF type 5 speed gearbox which will have the ratios i listed earlier.

The cars with smaller engines may have the old 124 type colloti gearbox which has a number of different sets of ratios and comes in 4 and 5 speed.

what are you looking for when you say you dont have "complete" data? the list on the polish site is quite comprehensive, or the other place to looks is guy crofts workshop manual also has alot of that infol.