Thank you both for the info! I’ll be in touch about the adapter plates when I get that far. The Volvo M40 and M41 transmissions, while not a plentiful as vw, would be great to have CAD drawings for!
Introduction and Project Description
Hello forums!
My name is Ben, and I am in the early (read: learning!) stages of a project to convert a Volvo 122 Wagon (1966) to electric. I have worked on and brought back from the dead multiple vintage Volvos, so I have experience there, and I have had a few Nissan Leafs as well. Whenever I finish a Volvo project, I quickly sell it and start another, because as much as I love these cars, I just don't enjoy driving them. What I do enjoy driving around town is my Leaf, constrained range and all. I am working on bringing these two things together!
Currently, I have emptied the wagon, and done some rust repair on the battery box area, floor pans, etc. I have rebuilt the rear suspension and front suspension. I had built a b20 with fuel injection (megasquirt) and have an m41 overdrive transmission, but those I will be selling off and I am committed to this direction of the project.
![Car Land vehicle Tire Automotive parking light Wheel]()
I have purchased a crashed but functional 2013 Leaf. From the A-pillar back, the car is immaculate. The car drives and charges. The batteru shows 73% state-of-health on LeafSpy, and that is good enough for my purposes. I have since stripped the front down to access the radiator, which is cracked, and will be addressing that first so that I have a stable test bed I can charge safely while I diagram, label, and learn. Ignore the home improvement stuff encroaching on my garage space
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![Motor vehicle Automotive tire Hood Vehicle Automotive lighting]()
The plan is still coming together. I'm thinking at this moment of using n m40 4 speed, driveshaft, stock differential, mounting the Leaf stack in the engine bay (EV West adapter plate I have read here exists), and building a battery box above the rear axle for the Leaf batteries. I will either try to find a Resolve-EV controller, or Thunderstruck, or do some significant CAN work to try to re-use as much Leaf as possible.
My name is Ben, and I am in the early (read: learning!) stages of a project to convert a Volvo 122 Wagon (1966) to electric. I have worked on and brought back from the dead multiple vintage Volvos, so I have experience there, and I have had a few Nissan Leafs as well. Whenever I finish a Volvo project, I quickly sell it and start another, because as much as I love these cars, I just don't enjoy driving them. What I do enjoy driving around town is my Leaf, constrained range and all. I am working on bringing these two things together!
Currently, I have emptied the wagon, and done some rust repair on the battery box area, floor pans, etc. I have rebuilt the rear suspension and front suspension. I had built a b20 with fuel injection (megasquirt) and have an m41 overdrive transmission, but those I will be selling off and I am committed to this direction of the project.
I have purchased a crashed but functional 2013 Leaf. From the A-pillar back, the car is immaculate. The car drives and charges. The batteru shows 73% state-of-health on LeafSpy, and that is good enough for my purposes. I have since stripped the front down to access the radiator, which is cracked, and will be addressing that first so that I have a stable test bed I can charge safely while I diagram, label, and learn. Ignore the home improvement stuff encroaching on my garage space
. 
The plan is still coming together. I'm thinking at this moment of using n m40 4 speed, driveshaft, stock differential, mounting the Leaf stack in the engine bay (EV West adapter plate I have read here exists), and building a battery box above the rear axle for the Leaf batteries. I will either try to find a Resolve-EV controller, or Thunderstruck, or do some significant CAN work to try to re-use as much Leaf as possible.
- Skills: I am a computer engineer by training, and have good mechanical experience working on vintage cars. I have some experience with electronics (megasquirt conversion, regular 12v car stuff) but no experience with high voltage, yet. Reading and learning.
- Range: Around-town here in Sacramento, 40-50 miles will do for me. Grocery store, kids school, Volvo meets etc.
- Timing: I love a project, and this is at least 5 of them at once. I give myself a few years.
- Investment: I chose two cars I was comfortable with, and cheap compared to Tesla parts. I am into the Volvo for 1k, and into the Leaf for about 3k. I figure another 3-4k for a controller, wiring, gauges, PPE, etc. Reasonable? I will find out.
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A bit of an update (I'll need to ask to have this thread moved to the appropriate place):
I've taken off the dash and the center console and everything is freed up and pretty wild looking. The car still moves and actually has no warning lights beyond the headlights (which are nonexistent). I was surprised that the unplugged airbags didn't trigger any complaints, although when I tried unplugging the airbag module it was pretty annoyed.
Still keeping my options open, so pulling the entire harness and modules out is the current plan, something like this:
So helpful to have a nice clean car to start with. Dash removed:
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Gloves - purchased from Grainger, good customer service:
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Magic flying front end (wheels are going the Leaf my daughter drives):
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I've taken off the dash and the center console and everything is freed up and pretty wild looking. The car still moves and actually has no warning lights beyond the headlights (which are nonexistent). I was surprised that the unplugged airbags didn't trigger any complaints, although when I tried unplugging the airbag module it was pretty annoyed.
Still keeping my options open, so pulling the entire harness and modules out is the current plan, something like this:
- Remove front end (done)
- Remove dash and console (done)
- Verify car still works (done)
- Battery disconnect switch (done with expensive new gloves)
- Drain coolant and prep engine bay for removal (done)
- Remove CV axles from trans (in progress)
- Remove motor stack
- Remove battery
- Remove all wiring and modules
- Get rid of car (either craigslist or pick n pull? Any other stuff I should pull?)
So helpful to have a nice clean car to start with. Dash removed:
Gloves - purchased from Grainger, good customer service:
Magic flying front end (wheels are going the Leaf my daughter drives):
1 - 5 of 23 Posts
