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Converting Gtr Box To Rwd

rb20bmw
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Mad Viking Newbie

Mad Viking

Posted
Posted
i know it can be done but does anyone have any links or tips on doing it? it is going into a bmw with a built rb20 in it. i cant justify the 1500 for a 25 box when i can get a gtr box for 600 and modify it myself.

any help appreciated

did you find anything on how it's done?

rb20bmw Apprentice

rb20bmw

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  • Author
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My logic says if you're looking for tips or links on how to modify a GTR box to suit RWD...then you won't have the skillset required to do it :)

skillset required? hahah good one mate. i am a qualified fitter and turner and built a few cars now... the point of asking for links is so i can find out what parts i may need beside the gtr box. i Havent bought a box and wont till i find out if it will be cost effective to purchase one over a 25 box.

fletch rb30 Enthusiast

fletch rb30

Posted
Posted

Whats it going into, i know it wont fit an e30 without cutting the tunnel out to fit the transfer case and pumping the front of the tunnel with a hydraulic ram to fit the body of the gearbox.

Got a mate with a rb30det and jatco automatic in an e30. We had to pump the tunnel a fair bit.

I have seen a rb20det and 20det box fit an e30 with no mods to the tunnel.

Also, the crank pulley will be touching the radiator and the firewall. You will need to turn the front belt pulley off on a lathe

rb20bmw Apprentice

rb20bmw

Posted
  • Author
Posted
Whats it going into, i know it wont fit an e30 without cutting the tunnel out to fit the transfer case and pumping the front of the tunnel with a hydraulic ram to fit the body of the gearbox.

Got a mate with a rb30det and jatco automatic in an e30. We had to pump the tunnel a fair bit.

I have seen a rb20det and 20det box fit an e30 with no mods to the tunnel.

Also, the crank pulley will be touching the radiator and the firewall. You will need to turn the front belt pulley off on a lathe

motor has been in the car and driving for a year now with the 20 box. the gtr box will fit the tunnel as long as the transfer has been removed from it which is what i am trying to find info on

post-48159-1255839841_thumb.jpg

  • 2 weeks later...
Alf Proficient

Alf

Posted
Posted (edited)

I have a 33 GTR box in a 32 GTST.

You will need to retain the modified transfer case to make it work, it might be possible but a mission to get around.

If you cant get the GTR box in with the transfer case attatched, it would be easier/cheaper to go a 25 box.

More info: http://www.skylinesaustralia.com/forums/R3...gtr+rwd+gearbox

Edited by Alf

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