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Thread: Rb25 swap in old Zcars

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  1. #1
    Old cars are slow but hot Silver280zx's Avatar
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    Quote Originally Posted by lightspeed
    I run an electromotive stand-alone EMS, so I didnt have to worry about any old electronics. I got tired of dealing with 1980's wiring harnesses
    BTW, Ive got a Jim Wolf MAF-converted ECU and Cobra MAF setup for it, along with a lot of other stuff for a turbo conversion car, if you end up doing an L28...
    I apreciate it man, but i think i am going to just go rb25. But if i dont ill contact you. This place i was looking at, has already done the swap on a 240z. And its pretty much the same swap. With exception to the wireing, fuel pump and drive shaft, i just have a little more room in my engine bay than a 240z. I was also wandering about rear ends, should i go with and s130 turbo limited slip, or a z31 turbo limited slip?
    1979 280zx
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  2. #2
    z32 power thursdaybuff's Avatar
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    my buddy had an rb20 put in his 280z and the swap worked out just fine for him.




  3. #3
    Senior Member lightspeed's Avatar
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    Quote Originally Posted by thursdaybuff
    my buddy had an rb20 put in his 280z and the swap worked out just fine for him.
    Cool, is he local? Does he want to get-in some runs with an old-school L28 with a bone-stock longblock and literally 250k+ miles on it? I havent run any other turbo-converted old z's.

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    z32 power thursdaybuff's Avatar
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    Quote Originally Posted by lightspeed
    Cool, is he local? Does he want to get-in some runs with an old-school L28 with a bone-stock longblock and literally 250k+ miles on it? I havent run any other turbo-converted old z's.
    he would if he hadn't snapped the rear end on it a little while ago. unfortunately he never changed it out during the swap so he left the stock one so now he's in the process of switching it out.

  5. #5
    Old cars are slow but hot Silver280zx's Avatar
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    Do the r180's use cv axels.
    1979 280zx
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  6. #6
    Senior Member lightspeed's Avatar
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    Quote Originally Posted by Silver280zx
    I apreciate it man, but i think i am going to just go rb25. But if i dont ill contact you. This place i was looking at, has already done the swap on a 240z. And its pretty much the same swap. With exception to the wireing, fuel pump and drive shaft, i just have a little more room in my engine bay than a 240z. I was also wandering about rear ends, should i go with and s130 turbo limited slip, or a z31 turbo limited slip?
    The rb25 would be a cool setup, so I hope it works out for you. Iive got a non-LSD R200 in my car, but its converted to use CV axles instead of U-joints (=no more breaking ) I actually bought an LSD from a z31 that was fully rebuilt, but my car has some modifications back there and it wasnt going to go in without some effort (more than I wanted to deal with.) I honestly dont know if my issue was "normal," but I know a lot of people use z31 setups. I do think it would be better than what I have, but it wasnt worth the effort.

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