Announcement

Collapse
No announcement yet.

Any more electric e30 conversions?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Any more electric e30 conversions?

    I saw that /drive video on the mtech II cabrio that was converted to electric drive (and I think the builder had a thread here, too?). That video is 2 years old now, wondering if anybody else is working on electric conversions? It would be cool to see what other people are coming up with, like if there's a way to design or customize battery cells to more tightly fit the e30 so you don't have to sacrifice so much trunk space.
    My Feedback

    #2
    Do front wheel drive and make a custom driveshaft tunnel battery. I have been thinking, half-seriously, about a front drive VW TDI conversion on one of my iX cars for MPG/range extension.

    Comment


      #3
      You won't likely see a lot of EV E30 swaps. E30s are small cars, so you have to choose between poor range, sacrificing the trunk, or splitting the batteries up between fuel tank, trunk, and under-hood placement which significantly increases the complexity of the build. Batteries are massively inefficient as a store of energy per unit mass or volume when compared to gasoline so as EV conversions get more popular you're inherently going to see less of that in small cars which don't have a lot of free space for big boxy batteries.

      Originally posted by packratbimmer View Post
      Do front wheel drive and make a custom driveshaft tunnel battery. I have been thinking, half-seriously, about a front drive VW TDI conversion on one of my iX cars for MPG/range extension.
      Converting any E30 to FWD is an awful idea. Just get a TDI Jetta or Golf.

      IG @turbovarg
      '91 318is, M20B25 turbo
      [CoTM: 4-18]
      '94 525iT slicktop

      Comment


        #4
        there's a student project going on local. they are converting an old volvo wagon. they are sort of approaching it as a resto-mod, keeping key original pieces and restoring a few. the power train changes but they are keeping suspension changes to a minimum. this is just a local engineering / mechanic college thing, but i guess old volvo wagons are kind of a popular choice for conversion. there's a couple places specializing now.

        Comment


          #5
          Mate Rimac (guy who started the supercar EV company, Rimac), started his first build on an e30. Assuming most people already know this, but I love this car, so here's the link....


           

          Comment


            #6
            Tino at 300mm.de did a swap and has a Tesla conversion mounts for the e30 available for sale.

            https://www.300mm.de/index.php?cPath=103

            He converted a touring to EV (eTouring), and has some pretty good documentation on YouTube.

            https://www.youtube.com/watch?v=RgGd...pH1oM_S8RJDh8W


            My e30: OEM+ with M30B35

            Comment


              #7
              Right now EV-swapped E30s are only in the realm of the rich, at least if you want something that can go 100+ miles on a single charge. So there aren't many of them right now. Affordable EV swaps that get 200+ miles of range are at least 10-15 years away; we need to wait for solid state batteries to become mainstream and affordable. By then you'll see a lot more EV-swapped E30s

              A cheap EV swapped E30 would be something like a forklift DC motor and 10-12 lead-acid batteries. This will probably cost $10k-15k just for the swap if you have a shop do it. Such a car would only get 30-40 miles of range at best. A better-equipped swap would be a Hyper9 AC motor with crashed Tesla batteries - total cost for this could be triple the previous option.
              Last edited by ZeKahr; 11-21-2021, 05:13 PM.

              Comment


                #8
                Originally posted by ZeKahr View Post
                Right now EV-swapped E30s are only in the realm of the rich, at least if you want something that can go 100+ miles on a single charge. So there aren't many of them right now. Affordable EV swaps that get 200+ miles of range are at least 10-15 years away; we need to wait for solid state batteries to become mainstream and affordable. By then you'll see a lot more EV-swapped E30s

                A cheap EV swapped E30 would be something like a forklift DC motor and 10-12 lead-acid batteries. This will probably cost $10k-20k just for the swap if you have a shop do it. Such a car would only get 30-40 miles of range at best. A better-equipped swap would be a Hyper9 AC motor with crashed Tesla batteries - total cost for this could be triple the previous option.
                What're you on about?
                You can source motors/batteries from other EVs for a total of under 10k. Sure you'll pay closer to 30k if you want a shop to do all the work, but wrenchers have done their own EV builds at home for 10k. That's with actual EV motors and battery packs (tesla motors/gm packs most common combo i've seen). That'll be good for 100 or so miles.
                Ford has even started selling an electric crate motor for under 4k that's good for ~300 hp and ~300 ft/lbs.

                Comment


                  #9
                  Originally posted by ElJimo View Post

                  What're you on about?
                  You can source motors/batteries from other EVs for a total of under 10k. Sure you'll pay closer to 30k if you want a shop to do all the work, but wrenchers have done their own EV builds at home for 10k. That's with actual EV motors and battery packs (tesla motors/gm packs most common combo i've seen). That'll be good for 100 or so miles.
                  Ford has even started selling an electric crate motor for under 4k that's good for ~300 hp and ~300 ft/lbs.
                  Well I don't have a garage, so this is something I'd personally leave to a shop to do; EV swapping involves a bit of custom work so in my case I'd have a shop handle it. The Ford crate EV motor is a better option if you're going for pure power, but for those who just want an E30 to daily the Hyper9 is sufficient. My question is, is there enough space around the gas tank area to bolt the Ford motor to the differential? That would be my preferred setup as it eliminates the transmission. Given the dimensions of the Hyper9 it should easily fit there, but not sure about the Ford motor.

                  Comment


                    #10
                    Originally posted by ElJimo View Post

                    What're you on about?
                    You can source motors/batteries from other EVs for a total of under 10k. Sure you'll pay closer to 30k if you want a shop to do all the work, but wrenchers have done their own EV builds at home for 10k. That's with actual EV motors and battery packs (tesla motors/gm packs most common combo i've seen). That'll be good for 100 or so miles.
                    Ford has even started selling an electric crate motor for under 4k that's good for ~300 hp and ~300 ft/lbs.

                    The age old quote applies "think of a budget for your project car and triple it"

                    EV conversions are getting cheaper, but to make something good is going to take hours and hours of work. and its not just welding stuff. lot of technical electronic wizardry required.

                    The cabri e30 that was mentioned, he has an instagram called "tesla_bimmer". hes always doing lots of tech things, making PCBs, programming arduinos, playing with can bus. these little things are going to be what makes your Ev conversion nice to use as a car. like al conversions. Getting it to drive is probably only 30% of the work.

                    EV conversion is going to be completely custom everything, so nothing special about the E30 either way. Maybe a 5 series would be a better choice, cheaper and more room.

                    RWD seems to be the obvious choice as you can just make a replacement rear subframe that has the elec motor and drive shafts etc. All in one.

                    Probably better off buying any number of new smallish EVs if you really want electric though.

                    Comment


                      #11
                      I'm not doing an e30 conversion but a 1993 Rx7. I was inspired by the TeslaE30 you're talking about.

                      I really like the tesla drive unit route because it gets rid of all the dead weight of the transmission and diff and it's an OEM part that comes with OEM reliability (debatable). The real hard part is that if you go Tesla, you need 360v of batteries and you can't fit a full Tesla pack in a car as small as an e30. So you have to go with Volt, Leaf, or LG Chem batteries that are OEM or buy off the shelf batteries, such as those from ElectricGT. On my Rx7 I have 42 kwH which will hopefully be good for 120-150 miles and it stays in the engine/trans areas. I'm into the swap for 20-25k. You could easily fit even more in an e30...the Rx7 is considerably smaller.

                      It took me months to modify the rear subframe on the Rx7 to fit the Tesla motor. Major cutting. The e30 would be 10x easier with the trailing arm suspension. You could slap together an e30 swap with a Tesla motor and 2x Volt battery packs for cheap and have a ball. Or people are using GS450h transmissions as the power unit or Leaf motors, etc. For even cheaper.

                      https://www.instagram.com/rjmsgarage/
                      Here's my build thread. Tons of good EV swap projects on here, including some e30's: https://openinverter.org/forum/viewt...hp?f=11&t=1244
                      Build Thread: Ryan's Hennarot 318is
                      COTM Aug 2019

                      Comment


                        #12
                        Just buy an i3, it’s basically an EV E30
                        Simon
                        Current Car:
                        -2000 330i Estate, the dad-mobile
                        -1975 Alfa Romeo Giulia Nuova Super 1300, the never-ending name & project



                        Make R3V Great Again -2020

                        Comment


                          #13
                          Originally posted by 2mAn View Post
                          Just buy an i3, it’s basically an EV E30
                          Dude... that's a pretty dead-on comment. I really like the i3 and it's quick as heck off the line. They are so affordable... 10-15k and they are cool looking.
                          Build Thread: Ryan's Hennarot 318is
                          COTM Aug 2019

                          Comment


                            #14
                            Originally posted by rjmcdermott81 View Post
                            I'm not doing an e30 conversion but a 1993 Rx7. I was inspired by the TeslaE30 you're talking about.
                            Just read your thread, great work. I like the attention to detail.

                            Comment


                              #15
                              Here is an e30 conversion underway using Nissan Leaf batteries. These are cheap and easy because they're aircooled:
                              https://openinverter.org/forum/viewt...hp?f=11&t=1828
                              Build Thread: Ryan's Hennarot 318is
                              COTM Aug 2019

                              Comment

                              Working...
                              X