Re: E36 M42 Diff Gear Swap

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Re: E36 M42 Diff Gear Swap

John Burns

25 Aug 2007 10:43

> I need to replace differential gear for 1992 BMW E36 M42 engine as it makes
> noise.
>
> 1. Is that true that the ratio of this stock final drive is 3.45?

Yes. 325i was 3.15:1

> 2. Will 1996 328 E36 differential gear with 3.91 ratio fit my BMW?

Ar you sure it's 3.91:1? I don't think it is.

> 3. If I could swap with this final drive, will this improve the
> acceleration?

Yes, if it's IS 3.91:1. But at the expense of much higher rpms when
cruising at speed and a lower top speed. It's not a good idea.

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Brewer	24 Aug 2007 00:18
I need to replace differential gear for 1992 BMW E36 M42 engine as it makes noise. 1. Is that true that the ratio of this stock final drive is 3.45? 2. Will 1996 328 E36 differential gear with 3.91 ratio fit my BMW? 3. If I could swap with this final drive, will this improve the acceleration? Thank guys, Kevin

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