Originally posted by nando
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no, i haven't done the swap yet, but i have done a lot(emphasize the word "lot") of reaserch and i have all the parts to get started when i get time.
another problem is that 3.91(manual) or 4.11(auto) ratios are not very well suited to the torque a 24v engine will produce.
don't waste your time dreaming about euro 525ix oil pans and transfer cases. i have been there. it has been documented that the oil pan won't work because it conficts with the e30 crossmember. the pan to diff bolt pattern on the 525 allrad is different than the e30 ix diff as well. also the axle ratio of the 525ix is an oddball. if memory serves me, i am thinking 3.38. you will certainly need to match it to the rear. the only thing imported in the united states with that ratio is an auto m3. who knows if you can take the ring and pinion from an e36 and put it in an e30 case.
your best(probably only) choice to adjust the ratio would be to get your hands on a set of factory euro 3.64 final drives unless you have the funds to get a custom ratio cut for the front. i am thinking about getting a 3.25 ring and pinion made for my front.
the info is out there on the other forum. it will just take some effort to find it in a search. i think it is just a matter of getting the info out an distributed to those of you that are interested so that swaps will get done.
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