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Title: Gear and Difs RATIO Post by: archigraphe on January 23, 2013, 07:31:21 PM HI,
The 1300 gearbox I would fit on my car comme from a Serie 2 1300 Beta. The difs ratio from this car is different of the first serie. So, I only know the ratio from the first serie coupé they are : 2000 : 14/53 : 3.78 1800 : 14/55 : 3.92 1600 : 14/57 : 4.07 1300 : 13/58 : 4.46 Could you confirm this ratios for late Beta : 2000ie : 14/53 : 3.78 2000vx : 19/62 : 3.26 TREVI VX : 19/65 : 3.42 The ratio seems different on some model, like the first gear on some beta, or the fifth gear between the trevi and coupé VX. I'm looking for a short box on the first 4 gear and like an overdrive on the 5th for the highway ralliement... Title: Re: Gear and Difs RATIO Post by: lukasdeopalenica on January 23, 2013, 10:17:22 PM The beta instruction book from 1983 says:
1300- 14/59 (4,214) 1600- 14/55 (3,929) 2000IE- 18/65 (3,611) VX- 19/62 (3,263) whereas gearbox ratios are: 1st: 3,5 2nd: 2,235 3rd: 1,522 4th: 1,152 5th: 0,925 R: 3,071 Title: Re: Gear and Difs RATIO Post by: archigraphe on January 25, 2013, 05:04:31 PM Ok ,
so the diffs are very different between first serie and others.... Have you the 83 instruction book, Can you partage it? Or it is downloadable? Title: Re: Gear and Difs RATIO Post by: lukasdeopalenica on January 25, 2013, 08:39:49 PM I have a copy and I surely can make a pdf. Just please indicate me the sharepoint where I can load it.
Title: Re: Gear and Difs RATIO Post by: archigraphe on January 27, 2013, 04:36:28 PM so the last version of the file.
Title: Re: Gear and Difs RATIO Post by: lukasdeopalenica on August 27, 2013, 08:24:52 PM Refreshing a bit the topic I would like to ask you Guys if there is a method of distinguishing the diff ratios without dismantling the gearbox? Any markings on the housing etc? As far as I remember my fiat 131 supermirafiori has painted diff ratio on its housing.
Title: Re: Gear and Difs RATIO Post by: archigraphe on August 28, 2013, 01:43:11 PM Humm..
Some Box have the diffs engraved on it Some haven't.... So, maybe with the production number. Title: Re: Gear and Difs RATIO Post by: lukasdeopalenica on August 28, 2013, 02:44:48 PM Have you already replaced your gearbox? I just realised that mine probably comes from a 1.6 model. I made some calculations and compared with satnav readings. The results are I reach only 100km/h at 3300rpm at 5th gear :( (while speedo shows only about 70 - speedo driven shaft came from 2.0ie version) The proper speed at the proper diff should be 111km/h.
I have another gearbox definitely from 2.0ie model, but before I installed the wrong one I had no idea about it... Is any way to swap just the differenial without removing the whole gearbox/drivetrain? I know that the Haynes says no way... Title: Re: Gear and Difs RATIO Post by: Nigel on September 03, 2013, 10:49:57 PM Have you already replaced your gearbox? I just realised that mine probably comes from a 1.6 model. I made some calculations and compared with satnav readings. The results are I reach only 100km/h at 3300rpm at 5th gear :( (while speedo shows only about 70 - speedo driven shaft came from 2.0ie version) The proper speed at the proper diff should be 111km/h. I have another gearbox definitely from 2.0ie model, but before I installed the wrong one I had no idea about it... Is any way to swap just the differenial without removing the whole gearbox/drivetrain? I know that the Haynes says no way... You can remove both gearbox shafts in-situ,as I have done to replace bearings, but you can't remove the diff this way. The whole thing has to come out. |