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Clarification... (archive)
[ Follow Ups ] [ 8-series (E31) Message Board ] [ Msg. Board FAQ ]
Posted by GregK on November 25, 2000 at 16:44:27:

In Reply to: 840ci owners - differential numbers posted by Lez on November 25, 2000 at 13:13:47:

You must be referring to the an 840i 6spd being 3.08 for all years? The 850 6spds were 2.65 for all years, and the 850CSi 2,93. Just to clarify.

Also, an easier way for N. American owners to get a 3.15 is to pull one from a 1988-1990 750i instead of trying to find a Euro 850i autobox with one and import the part.

Greg K
850i 6spd w/ 3.15LS installed


Yesterday I made an interestin discovery. The 840Ci was always said to have the 2.93 rear end gear ration if equipped with auto transmission. This isn't true, the 96+ modells were changed to 2.81. 94-95 is 2.93 only, the manual 6spd transmission version was 3.08 all the years. So the 2.93 is already an upgrade for us but not a big upgrade... The 3.15 should be the perfect for us out of a Euro 850i. The US 850i was 3.64 while the S. African version was 3.45 and all the 850Ci from 95 also used the 2.81 according to BMW TIS CD.
who would have thought the BMW actually forced the 840Ci in 1996 to do exactly same as before with a 10% smaller engine. Why ? They should have kept the 2.93 and a car would have been quicker off-line a bit... never understanded the manufacturers completely




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