131mirafiori forum

131mirafiori home => The Garage => Topic started by: joan131 on September 29, 2009, 09:05:00 PM



Title: Diferents diff.
Post by: joan131 on September 29, 2009, 09:05:00 PM
Hello, can the one who knows who is the differential short mas that the fiat mounted 131, be 9/40(4.444 or 5,375)? In 124 relatives it  was 9/40 in the 131 I believe that not. I am looking for the differential short (9/40etc..). Does someone know it? THANK YOU.


Title: Re: Diferents diff.
Post by: sid131 on September 29, 2009, 09:51:47 PM
full chocolate or just coated?


Title: Re: Diferents diff.
Post by: sportman on September 30, 2009, 06:21:43 AM
9/40  is  4.44
i have diverend types for my rallycar
8/43  is shorter 5.37


Title: Re: Diferents diff.
Post by: joan131 on October 01, 2009, 11:54:34 AM
8/43 is it only for to the fiat 131 abarth with independent suspension or also it is made for 131 "normally"?  ???


Title: Re: Diferents diff.
Post by: wak131 on October 01, 2009, 12:36:49 PM
5,37 is too short for a normal 131, i think, the "shortest" diff ratio for the weakest 1.3L mirafiori is 4,3 or 4,1.


Title: Re: Diferents diff.
Post by: david on October 01, 2009, 03:51:04 PM
The 1300s were 10/41 which was what I fitted in my sport for a couple of years until it went bang, back to a 10/39 now


Title: Re: Diferents diff.
Post by: miro-1980 on October 16, 2009, 12:42:26 AM
Abarth used quite  range of diff ratios ...

6,83 = 41/6
6,42 = 45/7
6,143 = 43/7
5,375 = 43/8
4,875 = 39/8
4,625 = 37/8
4,444 = 40/9
4,3 = 43/10
3,9 = 39/10
3,63 = 40/11

M