Shogun or Anyone Else is this ZF 4HP 24 Trans Going to Work

[rjjablo]

Shogun Any problems with using this potential transmission???

My Car is a 1991 BMW 850i with a build date of 12/90 and a dead Trans is a ZF 4HP 24 Marked 1043 30 45 Sorry for the bad cell phone picture with the trans still in it.

1991 BMW 850 My Trans.jpg
Potential Donor is a 1991 BMW 850i with a build date 10/90 Marked 1043 30 041
Potential Trans.jpg

[shogun]

1043 030 041 used on 850 from 01/1990 - 07/1992 gear code GY, NT: 2400 - 1218674; AT: 2400 - 1218675
1043 030 045 used on 850 from 04 /1990 - 01 /1993, gear code HQ, NT: 2400 - 1218796; AT: 2400 - 1218797

see page 387 http://avtgr.ru/data/pdf/Technical_data_2015-07-31.pdf
and it says "Ersatzmöglichkeit durch..." = replaceable possible by.... under E31 850 M70B50

If I understand it right, it is possible. Maybe someone else can comment on this to make sure.

[whiskychaser]

If you search the data file for 1056 000 073, it shows 1056 000 075 in the replacement column. I know that to be correct because I have exchanged them. But in the case of the 1043 030 041, that column is blank. Realoem usually says if the transmission is replaceable retrospectively but that information is missing in this case. It is also too old to be listed in the ZF Reman. Transmissions brochure. While there is the slightest doubt, it may be best to contact ZF and ask them.

[rjjablo]

Went to Real OEM with both SN

Only Difference I see is that gear ratio for the potential donor is a 3:15 versus what mine should have of a 3:64. Because of the different PN the Internal Gear Ratios of the transmissions I assume are different?

Any idea how different?

Donor CB03304 1043 030 041 used on 850 from 01/1990 - 07/1992 gear code GY, Rear Gear Ratio of 3.15 PN 24001218675
Mine CB73041 1043 030 045 used on 850 from 04 /1990 - 01 /1993, gear code HQ, Rear Gear Ratio of 3.64 PN 24001218797

[Timm]

No, the gear ratio's are exactly the same in all 4HP24's......

[whiskychaser]

Different diff, TC and TCM. OK, faint heart never won fair maiden. But that would be enough to make me think twice

[rjjablo]

TCM may be availalble Trans came out of a car that had a six speed conversion. I will ask

Different diff, TC and TCM. OK, faint heart never won fair maiden. But that would be enough to make me think twice