Hmm, mine is yr 2000 and came with a hp22... Do you know what would that be in bmw equivalent?

 

The facelift D2 used the 4HP24. 2002 and below used the 4HP22.

in BMW speak, the 4HP22 was used in tons of models. There’s a full list here

https://en.m.wikipedia.org/wiki/ZF_4HP22_transmission

 

I was just looking at this. I guess as long as i find a 4x4 beamer it should be the exact same thing. After giving it some thought, rebuild sounds a bit more down my alley - at least i know that trans been working fine for last 40k miles and I'd really hate to buy some junk.

 

Get a good 4HP24 and the driveshafts out of an 03-04 from a breaker, preferably one with low mileage. It will be the same cost as rebuilding and the HP24 has larger clutches and a better front pump seal.

 

Ironically, none of the AWD BMWs used 4HP transmissions. It was only in their RWD drive cars (and AFAIK, they still have never made a FWD car). The output of the 4HP22/4HP24 drove a transfer case in the case of Land Rover, or a driveshaft in the case of BMW (and many others). For this reason there may be differences in a rebuild kit but the transmissions themselves are the same. If you're looking to replace your trans then I would follow Extinct's advice, I don't know that the bellhousing would be the same if you tried to wedge a BMW trans in there. I think that level of difference might get down to the part number level as opposed to the series of transmission. It might be worth exploring from a rebuild perspective if there is a large cost advantage.

 

@ahab the thought behind the beamer was to use the BMW rebuild kit b/c it's half the price of the LR one - I doubt the trans itself would be a one-for-one swap

My questions are:

- Are the bolt patterns the same on the 24 as on the 22?
- Can my ECU run the 24?

I use the center dif lock occasionally and would not want to lose this feature so it would need to be an 04 trans. I also hear that the dif gearing is slightly different in 03-04, but I guess it's taken up in the transfer case.

 

If you are going the route of a TC, I know your in WA, there is a shop in NJ that rebuilt the torque converter on my 740, a while back. It was a cheaper, better option than sourcing a new one, or risking a used one. There were some national companies that you could ship to if cared to look around.

 

I would think the gear ratios would be different between BMW / LR for each application. Same transmission / different ratios & ECU inputs.

 

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I know it might sound insane, but with a used TC costing $100 i'm ok dropping out the TCase and trans if it breaks again. I'm only rebuilding the trans this time round, so next time i have to do this, I'll rebuild the t-case

 

I really like my disco, but i don't want to to turn into a money pit - sadly, as cool as these trucks are, they're just not worth the "investment"