Rb into ps13

Thread in 'Technical Questions' started by stichy, Oct 20, 2015.

  1. stichy

    stichy Member

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    Will an rb fit straight onto an s body subframe ?
    And will an sr box bolt onto an rb ?
     
  2. 200sx_

    200sx_ PS13 x TD Power

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    No, unless you buy conversion engine mounts. Most people run an R33 front subframe for the conversion if I remember correctly.

    And no again. If your going to run an RB25, just get the correct box as it's much stronger than the standard small case SR20/RB20 gearbox :thumbs:
     
  3. stichy

    stichy Member

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    I'm aware the box is stronger but will it fit.
    It will be a DE swap and not a det.
     
  4. Dirk Jan

    Dirk Jan Member

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    No it won't fit. Life isn't easy like that.
     
  5. BenRice

    BenRice Well-Known Member

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    SR20 box vs RB20 box

    Bell housing bolt pattern (ie where it attaches to the engine) is different. Bolt pattern attaching to the gearbox case is the same.

    However:

    The RB20 box has a small case (second half) and longer bell housing (front half)
    The SR20 box has a longer case and shorter bell housing

    It is physically possible to interchange the two bell housings, however if you put an SR20 case on an RB20 bellhousing you will have an overlength gearbox. I also believe your input shaft will be too short and not reach the clutch

    There's the reason why it won't work

    Sell SR box, buy RB box

    You can use the front half of an RB20 driveshaft and the rear half of an SR/existing driveshaft.

    R33 crossmember puts the engine in the best position.
     
  6. stichy

    stichy Member

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    that really great info,

    nice and easy then buy engine and box, as well as a 33 sub frame .
     
  7. sparky_s13

    sparky_s13 Active Member

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    All that effort to fit a DE?
     
  8. RacerEdges

    RacerEdges Guest

    Go for 1JZ i think it's better for RWD
     
  9. Ollie

    Ollie LOOSE!

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    ?

    Fuck yeah its that easy. You've made the metal lumps fit in the car you just turn the key and away it goes. There isnt any wiring at all to deal with.
     

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