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Tesla Powered BMW E31 8 Series

40536 Views 110 Replies 25 Participants Last post by  jackbauer
So some of you might already know about my E31 conversion as it's been going on 3 years now! Currently running a Siemens 1pv5135 motor and DIY inverter and 6 speed manual gearbox. Has been running very well the last few months but with the Tesla components becoming available and my work on the open source control boards progressing nicely I've decided to convert the E31. Again.

I had originally thought to use the small high efficiency drive unit but decided to go all in and put in the Large rear unit for 450hp+ :D

Going to be getting some help and the use of a workshop and vehicle lift for the drive unit install as it will need some serious work done to the rear subframe and boot floor. Once the drive unit is in then I can start putting some batteries into that nice big empty engine compartment. Should make quite a fun car and test bed for the open source control board. Stay tuned:)

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May be I missed why, but why ditch the rubber sub-frame mounts? With the conversions and builds I'm working on, it's a constant struggle to limit the extraneous noises that come up with the ICE no longer in the picture. In your case, you might have a big increase in tire and road noise transferred to the unibody and cabin without these rubber mounts
 

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Preparing an early Christmas present for Der Panzer...

Tesla Front Junction Box, DCDC, PTC Heater, Air Con Compressor, Battery Heater... and from Anne at New Electric, two Tesla battery modules :cool:

Let the open source mayhem continue :D
 

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Discussion Starter · #28 ·
Massive thank you to Kevin and Anne and everyone who has supported me both on the Tesla stuff and on the Panzer build. Probably have more Tesla parts in this car than any other non Tesla car ..... that doesn't really make sense.....sorry 12 hour day of Panzer just ending:)

Random fact : got a message on youtube saying I should be burned at the stake. Guess that means I'm doing something right:)
 

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Looking smart. How low/high is the motor relative to the body underside? Can't see through the tray obviously. I'm wondering if you can fit an under tray/diffuser for aerodynamic and protective reasons. Had you thought of that?

Cheers

Tyler
 

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Discussion Starter · #33 ·
Thanks to an amazing donation from New Electric Amsterdam I am now the proud daddy of two Tesla battery modules. I threw together a quick circuit for the Arduino Due based on the great work by EVTV and Colin Kidder and was able to read out the cell voltages and temperature sensors. https://github.com/collin80/TeslaBMS

The plan is to use 10 or 11 of these in the car for around 50 - 55kwh of battery. Two down, another 8 to find:)

Also picked up custom made hubs to allow the BMW half shafts to bolt up to the Tesla drive unit. These are based on the Tesla cups and before everyone jumps on the bandwagon telling me how they will blow up my car, house and cat let me assure you this is not an amateur hour special. Yes, before I REALLY lean on it I will get a set made out of a single piece of steel. But here's the thing : I don't know if the car will even move 3 feet with the open source logic board so let's take a few baby steps before hitting the drag strip:)
 

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Discussion Starter · #38 ·
So today we installed the GAZ coilover struts and mountings and the driveshaft hubs. I'm coughing up grinder dust right now so short update:)

And of course the video :
https://youtu.be/U6yQv7Zzud8
 

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Discussion Starter · #39 ·

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