fiat 132 diff ratio

[131racing]

can anyone tell me diff ratios of fiat 132?and how much teeth it has crown and pinion of ratio 3.7?

[djape1977]

132 1600/1800 - 4.11/1
132 2000 - 3.73/1
132 2500d - 3.42/1
argenta 1600 - 4.11/1
argenta 2000 (110, 120ie) - 3.73/1
argenta VX and diesel/turbodiesel - 3.42/1
dunno about transmission ratios for versions with automatc gearbox, might be different.
dunno either about exact number of teeth but definately not 37/10, 41/10, 34/10 because than it wouldn't be .73 but .7, so it's probably 12/41 for diesels and VX and so on

[mirafiori76]

Gee Pedja,

You're pile of informationbooks must be enormous 

[djape1977]

no, straight from the head, compiled over the years.

stuff like that is good to know. i learned it 12-13 years ago when i wanted to spice up my daily driver - a 132 2,5 diesel. i bolted up rear axle from 1800 onto it and got rear discs and short drive ratio all in one. it could burn rubber in 1st and 2nd gear but top speed was around 130kph. good for city driving, it could cruise at 50kph in 5th gear but useless on highway

[mirafiori76]

I had something like that in my replica. 2 liter engine with all the goodies, 131 Racing gearbox but a 1300 rear axle. Fast on short tracks, but on the cirquit and open road it was drama. So was the noise inside  

[Robert]

In other words, a perfect rallye setup (as it should be for every serious Abarth replica). Useless on the race track, but perfect for special stages. Like this one which my co-owner wrecked last month on a winter rallye in Sweden - had a short rear axle from Diesel, top speed only 160 km, but acceleration like a 911:

[djape1977]

Robert, you got something mixed up. diesels have longer ratios than petrol versions.
if a petrol powered cars usually do 100kph at 3.000 rpm, at half of max revs (6.000rpm), diesel needs to do the same but at 2.000rpm, again half of max 4000rpm. also, if same car was available with diferent engines, bigger engine will always be coupled to longer diff ratio because it can maintain decent acceleration with longer ratio and higher top speed due to higher power and torque output. perhaps that volvo 740 (760?) had diff from some smaller engined model?

some examples:

ford granada was available over the years with engines from v4 1.7 to v6 3.0 diff ratios ranging from 4.11 to 3.22. a friend of mine has a '74 granada that was originally 2 liter v6 and we slapped in 2.9 v6 from 1999. scorpio leaving original 3.9/1 diferential. max speed is still same as it was, but acceleration is much better than originally and even better than scorpio.
http://www.youtube.com/watch?v=JcmBEFFytRc

ladas, talking about rear wheel driven models, were available with diff ratios ranging from 3.7/1 for 1.6 liter sedan down to 4.3/1 for 1.2 liter sedan and even 4.44/1 for 1,2 liter station wagon. when you couple 4.44/1 diff to a 1.6 liter engine you get acceleration one would expect from a modern 2 liter car. and when you couple 4.44 diff to a 2 liter fiat engine, you get acceleration of a 3 liter car.
http://www.youtube.com/watch?v=488sWbbhmkg

russians made diffs for their racing lada VFTS, 160hp high revving engine, up to 5.7/1
top speed 140kph but coupled to a 6 speed gearbox it has insane acceleration
http://www.youtube.com/watch?v=Rq2y8_YvVe4