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RB25 / Z32 gearbox hybrid

iruvyouskyrine
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iruvyouskyrine Grand Master

iruvyouskyrine

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RB25 / Z32 gearbox hybrid

Hey all,

 

Basic run down. RB20 in an S15. Currently have a RB25 det gearbox but all the info on the net tells me that the gearbox shifter will not line up with the body of the car, it will sit significantly further forward. AlphaOmega make a kit to convert standard SR box to the bigger RB25 gearbox but it includes and adapter plate as it was designed to keep the SR20.

Basically my plan is as such, RB20 -> RB25 bellhousing -> RB25 gearset -> Z32 rear gbox half with remote shifter

This should align the shifter in the correct postition. All my reading on the net suggests that the RB/VG bellhousing should swap straight over. 

If someone chimes in and lets me know that the 25box fits perfect into an S15 i will be very happy haha

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https://www.sau.com.au/forums/topic/466564-rb25-z32-gearbox-hybrid/
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sweefu Mentor

sweefu

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Posted

Hey mate,

 

In my S14 I have an RB25 bellhousing, cut/shut with SR20 front, on a Z32 gearbox. Boom! 

 

The Z32 shifter lines up much better, at best you will need to clearance the shifter hole a few mm. 

 

The RB25 box requires a ~70mm half circle to be cut out of the front of the shifter hole, then you need a big dogleg shifter and it's not good.


Feel free to PM me for more info.

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