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E31 850 CSi and E24 M635 CSi M635 CSi (E24) 1983-89 and 850 CSi (E31) 1992-96. The Ultimate Grand Turismo by BMW M.

 
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post #1 of 2 Old 11th March 2015, 03:20 AM Thread Starter
bmwmtechnike24
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bmw e31 and e38 diffhousing switch

Hello

I know that all large 210mm diff can switch housing until the bmw e46 210mm.
on some diff companys info you read that the e38 have a 210mm gear and pinion to.

but I am not sure of that.


I want to find out that I can place the gear and pinion of a e38 750i 2.81 or of the e38 740d 2.65
in a large e24 210 housing.I have now a 2.93 but I need lower.

is there a e38 diff of the 750i that will fit in a 210mm housing


I need this for my e24 turbo projects.

please info

best regards




ruben
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post #2 of 2 Old 13th March 2015, 07:14 PM Thread Starter
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Hello

with the help of wanganstyle of the bimmerforums(he is building those diffs for day job)
I know that the early bmw e38 750i diffs 3/96 are in 210mm.
after that date bmw changed the internals.

so i have bought now a bmw e38 750i diff with a ratio of 2.81 for 55 euro.

the 2.81 in 210mm is normal on the bmw 850ci and the 840ci but then the cost is must higher.400 euro and more

now i can rebuild my e23 210mm 2.93 lsd housing to a 2.81 lsd.

there is lower 210mm gear the 2.65 but that is very hard to find(6speed manual US version)

so for my e24 turbo project the 2.81 is good(for gears and the price)

greatings

ruben

Last edited by bmwmtechnike24; 13th March 2015 at 07:16 PM.
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