Next week, I will begin pulling the engine out of a 1999 Porsche 911 C4 so that I can start an EV conversion project. I've done multiple engine swaps and have a good basic understanding of circuits. Plus, I've been watching a good amount of YouTube, including some of Rich Rebuilds Mini Cooper conversion series, so I got that going for me.
I would like to use the Tesla Model 3 Rear Drive unit from the standard range car (will be ditching the awd system). My understanding is that the Model 3s use a new motor type with more efficiency. I believe it is referred to as a Internal Permanent Magnet-Synchronous Reluctance Motor. Anyway, I figure, the Model 3 Standard Range does 0-60 in about 5 seconds and weighs about 700 pounds more than what this should weigh when it's done, so the standard range motor should be enough power.
Question for anyone who might know: Is the rear drive unit in the Model 3 Standard Range, the same as what comes in the Long Range/ Performance model?
Battery Range: I would be happy with 40kWh here, I figure that would give me about ~140 mile range, and not add too much weight.
I'm cheap. I hope to do the entire swap for around $10k (this takes into account getting some money back from selling Porsche parts). This means I probably will be looking for something other than Tesla battery modules.
I got to speak with Michael Bream at EV West today, he brought up a good point that the Model 3 motor places the axles behind the electric motor, thus transferring some weight forward in the car, whereas the Model S and Model X motors place the electric motor behind the rear axle (like a 911 engine sits). I figure I will be adding battery pack weight to the back of the car so the Model 3 motor would be okay.
I have heard that the Model 3 motor is newer for swaps and so people are still working on motor controllers and things like this. I'm all ears to any advice or information you think would be helpful.
YouTube video of the car I'll be swapping and some initial thoughts:
Ebay Listing for Model 3 Motor: 2020 Tesla Model 3 Rear Drive Electric Drivetrain Engine Motor Unit | eBay
Picture of the 911 being swapped.
Thanks for reading this. This is a dream project of mine and has taken a while to even get to this point.