They were talking about a physical adapter plate between the engine and transmission. You still need to facilitate communication between the transmission and the ECU, which is what this device does.
OEM-level 8HP swaps in E-series cars
- Thread starter Svmp
- Start date
ZF 8 HP 70 transmissions are in ram 1500 3.0L diesel trucks.. any reason they would not be useable in my E 90 335xi 6AT
reman-transmission.com
Transmission for 2018 Dodge Ram 1500 3.0L
8-Speed Automatic Transmission for 3.0L 2018 Dodge Ram 1500 Remanufactured, and rebuilt Transmissions available. Call Now (888) 242-2605!
I've received a reply from someone, he said yes they will soon have software to run the transmission, but it would need an adapter for the motor and transferase.ZF 8 HP 70 transmissions are in ram 1500 3.0L diesel trucks.. any reason they would not be useable in my E 90 335xi 6AT
Transmission for 2018 Dodge Ram 1500 3.0L
8-Speed Automatic Transmission for 3.0L 2018 Dodge Ram 1500 Remanufactured, and rebuilt Transmissions available. Call Now (888) 242-2605!
i guess that seems obvious.
i don't think you can use any 8hp70, it has to be a bmw specific one. And at that i believe you can't use the cheaper one out of a 550i, it has to be out of a Diesel inline 6 bmw. let me know what you find and how it works out. Im intrigued by this swap but it was very difficult to find a Rwd Diesel 8hp70 in Canada.I've received a reply from someone, he said yes they will soon have software to run the transmission, but it would need an adapter for the motor and transferase.
i guess that seems obvious.
The guy I emailed produced the conversation kits for this topic. He says it would work technically, but the front and back would not be mountable. Meaning there's no adapter plates.
As for the diesel aspect, I think that would affect what the lock up speed on the torque converter is.
What did u pay for that transmission?
I picked up a 8HP45 the other day out of a 2014 335 to use in my 2009 E61 535. Does anyone know if I can use the original flex plate that is currently in there with the 6HP, or am I going to need to track down the flex plate that would have been on that N55 powered 335?
I don't have first-hand experience here, but looking through the CANTCU Wiki, it seems that the Torque Correction Factor might help you with this in lieu of any tune changes:
https://wiki.canformance.net/doku.php?id=cantcu:integrations:bmwe6789x
(scroll to bottom of page)
Kenneth reached out to me and took a look at my logs, we narrowed it down to the torque value being reported from the DME. I guess the MSD80 is known for this. I'm still in the process of getting the car dialed in, so every time there's a change in my tune I'd have to compare TCU and DME tq values from the logs and adjust the correction factor. Them TPC Stg2 turbskis are a ripper on the 8hp though, no traction 1st-4th on street tires and only traction issues in 1st-2nd on MT radials
.
regular_car_fella
New Member
Hey man I'm doping research on the same project and from everything I've read you can use the n55 flex plate, but I'm not 100% certain. How is the swap going for you? Would love to know more details on it!
I currently have engine and transmission out and I am dealing with spun rod bearings. I have confirmed the original 6hp flex plate bolts up to the torque converter of a 8hp45. I was going to get a friend to make some adapters to make the original cooler lines work, I haven't been able to find anything available to use the original hoses.
Attachments
regular_car_fella
New Member
I found a video with a guy that had a billet adapter set for -8 AN lines for n aftermarket cooler. Apparently using the stock cooler can cause trans temps to stay too cold and not get up to temp. People can get around this by using an inline thermostat. I’ll try and send you a link to the video with the AN line adapter
regular_car_fella
New Member
ZF 8 HP 70 transmissions are in ram 1500 3.0L diesel trucks.. any reason they would not be useable in my E 90 335xi 6AT
Transmission for 2018 Dodge Ram 1500 3.0L
8-Speed Automatic Transmission for 3.0L 2018 Dodge Ram 1500 Remanufactured, and rebuilt Transmissions available. Call Now (888) 242-2605!
ZF8HP's are found in lots of different cars/manufacturers, I wouldn't use any 8HP outside of one manufactured for BWM.
BWM actually has a larger diameter output shaft, by about 4mm if I remember correctly.
That being said there are BMW 8HP70 and 8HP75 out there, but most are in Europe and not in North America.
I had my GA8HP75Z shipped all the way from Bulgaria! Look on the diesel BMWs with the N57 motor like the X5 and X6.
You'll need an adapter plate; I got mine from Domiworks.
Here's more info about the 8HP
8HP Variations
Attachments
Last edited:
Allright, after some struggles with increased boost levels to 35psi got issues in that swapped 6hp26 and one friend got unused billet upgraded stage2 8hp70x without use anymore... so i bought it.Yea, surely a lot of power there, very nice!
A 8HP70/75/90 would be a good alternative for the 6HP. The 70 takes around 1100Nm (800ft) of torque in stock form, and the others some more. With enough abuse, anything will break though.
At the same my car get 3500rpm stall turbine, turbolamik 2.0 tcu ... and all those good stuffs..
Everything should be here in few weeks... finger crossed
Similar threads
