I've picked up one of these AC compressors and will see if I can get it running with these logs, might be a while before I get round to it though.

Part number I have is 5B31E59 but it seems there have been many iterations that should be interchangeable: https://www.realoem.com/bmw/enUS/partxref?q ...

I've started working on the car now that the weather is getting slightly more tolerable. This was my first time removing an engine and it went far from perfect haha but at least it's done

I was so focused on making sure the engine and gearbox cleared everything on their way out that I somehow didn ...

Nice build. I'm in the process of converting my E91 also with a leaf motor. I'm curious where you manage to fit all that battery, currently I plan on putting the bulk of mine in the engine bay but it looks like you've avoided that.

Welcome to the forum.

The community here is more focused on reusing OEM components than new off the shelf parts. I recommend checking out the wiki for a list of motor options: https://openinverter.org/wiki/Main_Page#Reusing_motors_and_inverters_-_aka_drive_trains

Yes your choice of motor will ...

I suspect you are both right; the DVLA will continue to refuse to recognise it as an EV for regular VED but suddenly will when it comes to eVED, which is infuriating.

The UK government announced the budget last week including a new 3p per mile tax to be applied to EVs starting in 2028:
https://www.gov.uk/government/consultations/consultation-on-the-introduction-of-electric-vehicle-excise-duty-eved

It seems this will apply to conversions the same as any other EV ...

Battery pack disassembly is complete, unfortunately I don't think I'll be able to reuse many of the cooling plates as the modules aren't grouped in the way I first thought.

Also I bought the car!

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It's a nicer ...

I'd take a IVT-S-500-U0-I-CAN2-12/24-MRQ

It's open!

I tried both the knife and chisel approaches but both made very slow progress, in the end what worked best was connecting the engine hoist to the bolt tabs on the top half and lifting so that the weight of the pack provided a constant force pulling the halves apart, then I just heated ...

Does anyone have any advice for taking this pack apart? I've got all the bolts out but the glue just will not let go no matter how much I go at it with a heat gun and a crowbar

I collected my battery pack over the weekend, and it went remarkably un-sketchy haha.

This is a 50kWh 108S pack found in a variety of Stellantis vehicles, mine is from a 2022 Vauxhall Corsa-e.


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I've been reading through old threads on the Volt/Ampera inverter . Lots of work was done on a few different openinverter logic board designs that allowed running both 600A power stages in parallel. Definitely a lot cleaner than 2 leaf inverters rigged together haha. Unfortunately information on ...

If anyone else stumbles upon this thread while looking for part numbers, these are listed on the wiki: https://openinverter.org/wiki/index.php?title=Connector_Part_Numbers#Nissan_leaf_gen2_inverter

Took me an embarrassingly long time to find that page haha :lol:

EDIT: I added the link to the Gen 2 ...

The lebowski brain was used for 300hp on a leaf motor in believe. Not sure if it was gen 1 or gen 2. The thread is here...
https://endless-sphere.com/sphere/threads/hi-power-inverter-for-nissan-leaf-motor-dynos-302-3hp-p15.63982/page-13#:~:text=But%20then%20it%20is%20only,be%20as%20accurate%20as ...

I'm planning my build around the EM57 motor initially with an 80kW inverter I got for very cheap but planning to upgrade pretty much as soon as the car is running, as such I've been reviewing the inverter options available:


Gen 2 Leaf Inverter (Stock), 80kW, 250Nm
Gen 2 Leaf Inverter ...

Potentially, most of the modules are quite specific to BMS applications though so I think leaving them part of the firmware is fine.

I just envisage a common open source firmware for a variety of BMS boards. In much the same way open inverter supports a variety of inverters.

I'm thinking of reusing a lot of this code for my MAX17823 BMS, for those unaware this would be a master BMS that talks to the built in satellite BMS in OEM modules from Kia, Peugeot, Citroen, Opel and potentially others. In fact I'm wondering what people's opinions are on adding support for ...

Looking at the V627/3 form it seems that most structural modification only have to tick a box but EV conversions have to "provide full details of any modifications".

There are some more mentions of EV conversions here: https://www.gov.uk/government/publications/making-changes-to-a-vehicle-and-registering-kit-built-kit-converted-and-reconstructed-classic-vehicles-inf318

Here are the bits that are most relevant:
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Bigpie wrote: ↑Mon Jul 28, 2025 7:00 pm viewtopic.php?p=53709#p53709

Thanks for the link, that was the only real world evidence I'd been able to find. 170kW ish is great but it's a fair bit short of the rated 250kW the wiki states, hence me making this thread to see if we can back that number up.

I've been reading through the wiki and forum trying to collect info on the GS450H motor but I feel there is a lack of real world data despite plenty of builds so I thought I'd create a thread to try and consolidate it all.

Most important is max power and torque figures, the wiki simply has the ...

In the meantime I've been trying to get an idea of the performance difference between the leaf motor and a GS450h transmission, trying to convince myself that I'm making the right decision.

Screenshot From 2025-07-14 20-44-03.png

I would be amazed if these numbers turn out accurate given all the ...

I've run quotes on a few potential cars, albeit in unmodified form, and the E91 was very reasonable. I'll give adrian flux a call to see if they can quote me with the conversion. Thanks for the heads up

I love my E91, but be aware of high insurance costs. There's only Adrian flux that I could find to insure.and it's over a grand. No points, no accidents, 20 years no claims.


I think insurance on any conversion is going to be a pain unfortunately, I would love to hear what insurance has been ...

Hello everyone, this is my first time posting on the forum :)

An EV conversion is a project I've been wanting to tackle for years now but never managed to get out of the planning phase, however I recently stumbled across a deal too good to turn down. I acquired an 80kW Nissan Leaf motor, inverter ...