Final drive swap?



Does anyone know if it is possible to fit the final drive c.w.p from a 1.3 auto box onto the diff of a 1.3 manual box? I want to increase the ratio from standard manual 3.89:1, to auto box ratio 5.2:1, to get better acceleration. The Micra Challenge rally cars used a diff ratio of 5.1:1 so I know this ratio will be about right for my car, but will it fit? Any help would be appreciated, cheers.


Unofficial Member (Gold)
Club Member
Manual and auto boxes are totally different so I don't think that you could, Matt Humpris of Oxford often has rally-spec boxes for sale if you want to look there...