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what diff
Posted: Wed Jun 08, 2011 12:48 am
by E30k
hi all this may sound wrong to some but hay what the hell right got a 318i auto i was thinking what diff can i change to lower the engine speed when its on the motorway as i think the rpm are high for the speed it is going at i know my pick up may suffer but as long as its not too bad i can live with it and the diff i swap what car and model is it so i can get cheers am sure some one knows
Re: what diff
Posted: Wed Jun 08, 2011 8:31 am
by daimlerman
We really need to know what ratio is fitted at the moment,so that an alternate can be suggested.
Your car could have either a 4:1 or a 4:27.....slide underneath the back of the car and have a butchers,take a wire brush or a bit of abraisive paper with you along with a torch.You are looking for a tag held on to the back of the diff,this will give the ratio,but the tag will be rusty!