E8X convert 135 e82 to xdrive

135boost

Specialist
Oct 28, 2017
81
long time since last post.

okay, then story, i had small crash with my 135 e82 some weeks ago.
that`s for sure it suffers from lack of traction with all tyres except drag radials and that crash was
at least proof of it, it started to spin wheels at some 160kph and i didn`t manage to take control of it that time, like some 100 times before.

so at the same time i fix that body it will become something else, maybe first ever built 1 series e8x with xdrive.
project is starting maybe next week, i bought last week one crashed 335xi as donor car and i did some study what
has to bee changed.

transmission cross member does not fit for sure, atc300 does not fit for sure but all other parts should fit except
vargas double barrel hfpf.

one issue is unsolved, transfer case controller, what to do with that, there is no connection to that on a e8x on my knowledge and i don`t yet
know what it needs to work, but sure on 335 there must be all parts to solve that problem.

what do you think can come to be a real problem in this swap ?? all help is taken to pull this trough
 

135boost

Specialist
Oct 28, 2017
81
and oh, reason for that is obvious 29psi boost and dailydrived / weekend warrior on no prep runways.
i try to push weight to under 1450 kg levels with that xdrive fitted.
 

135boost

Specialist
Oct 28, 2017
81
Hi again.
donator 335xi has not arrive yet so i have not has possibility to
do any research on how to connect atc300 controller module to a car not orginal mention
for it..

if anyone has pic of electical wiring diagram of 135i and 335xi, everything could
help on this build and maybe ideas what kind of problems is to wait for.
 

Turby

Corporal
Nov 3, 2016
144
Kcmo
Im 100% for this idea as I thought about the reality of it as well, I would take EVERYTHING from the xi and swap it over to the 135. You will need the dme, the ABS dsx module and hardlines running from it since it is different as well.. the front suspension is also different. Your best bet would be to drop the entire front subframe of the 135 then attempt to put the 335xi front subframe into it with the motor and trans attached. Almost everything is different but you should be able to make it work with some creativity.
 

135boost

Specialist
Oct 28, 2017
81
Hi again, too much work so these projects is suffering from lack of time.

the car is at the moment in paint boot cause of small accident i had with it in may, i had first test
rides with it and all most everything seems to work, except few fault codes.

there is some odd thing going on with ABS unit what is to be solved , speedo is not allways
working, 4x4 warning obvious shows when that is active, i suspect it`s one faulty wheel sensor
or steering spring unit but i have not had time to solve out it. inpa does not read any wheel speed, etc.

then dme is at the moment not with RE85 sofrware and new 4x4 trans not with xhp...


i get the car back from painter next week and get some time to solve out those odd faults.
 
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