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Thread: E30 to e21 what swaps over?

  1. #1
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    E30 to e21 what swaps over?

    (I was advised by another member to bring this over to the e21 section.) I've been searching around trying to answer my question myself but keeping leading myself around in circles, so I figured I'd ask people that know more. I've talked to people I know who like bmw and read stuff on forums but haven't been able to get any clear answers. Some people say certain things will swap over and some wont but it's always different some say nothing will. I have a e30 I'm not gonna be able to title I was looking around and found a e21 for sale local I've always like them and I've only seen now 3 of them around here one at a mechanic and one wrecked in a junk yard. I would like to pull my m20 out of my e30 and put it into the e21 that has a title I know I would need the euro subframe. I would like to know what else I could swap in my big beefy dif? My suspension? Could I even do my 5 lug swap to run my 2 piece bbs wheels? But my e30 has a few upgrade parts I would like to keep what will swap over and bolt up with no modifications or slight modifications. I'd like to know what will work if I'm just better off going for the e30 which I know will be ALOT easier but sometimes theres no fun in easy.

  2. #2
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    Quote Originally Posted by Bkiesler924 View Post
    (I was advised by another member to bring this over to the e21 section.) I've been searching around trying to answer my question myself but keeping leading myself around in circles, so I figured I'd ask people that know more. I've talked to people I know who like bmw and read stuff on forums but haven't been able to get any clear answers. Some people say certain things will swap over and some wont but it's always different some say nothing will. I have a e30 I'm not gonna be able to title I was looking around and found a e21 for sale local I've always like them and I've only seen now 3 of them around here one at a mechanic and one wrecked in a junk yard. I would like to pull my m20 out of my e30 and put it into the e21 that has a title I know I would need the euro subframe. I would like to know what else I could swap in my big beefy dif? My suspension? Could I even do my 5 lug swap to run my 2 piece bbs wheels? But my e30 has a few upgrade parts I would like to keep what will swap over and bolt up with no modifications or slight modifications. I'd like to know what will work if I'm just better off going for the e30 which I know will be ALOT easier but sometimes theres no fun in easy.
    Besides engine and trans not much. Suspension is different, specially rear. I would look into another e30, like a 318 to swap to.

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    e30 325i, the mighty 4 door granma mobile....Gone
    e39 528i, 4 door sports tank

  3. #3
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    It can be done but will cost much more than buying a shell with a title.

  4. #4
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    Would I atleast be able to 5 lug swap it to run my bbs wheels they are a 5x114.3 I could think about just keeping the engine and trans and parting out the rest I've got alot of money tied in parts for it.

  5. #5
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    from my knowledge no, But BBS are not rare at all, just sell the RS's and get RM's. Also I'm guessing you have 16" RS's and I personally they are to big for the E21, but that is just a personal opinion.

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