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How To Tell If U Have A Rb25 Or Rb20 Manual Gearbox

fubar

By fubar,
in Drivetrain and transmission

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fubar Enthusiast

fubar

Posted
Posted

Hey all

I've got a r32 with a rb25det neo and its used for driftin

Not sure what gearbox is atteched but it has taken a beating and has finally failed

I've got some numbers of it RP71C #1 if that helps

Can someone help me to tell the difference between the 2 gearboxes

Cheers

Daniel

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The Dan Grand Master

The Dan

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Look at the slave cylinder.

If the slave cylinder is on the engine side of the throwout fork, then it is RB20 or R33 RB25. Then check where the bolts are. Bolts for slave cylinder on same side of slave cylinder is RB25 gearbox, bolts on opposite sides from each other on the slave cylinder is RB20. If the slave cylinder pushes from the rear of the box forward, then it's the Neo RB25 box and you have the pull type clutch

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fubar Enthusiast

fubar

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Posted (edited)
Yes RP71 (whatever) indicates non turbo rb20/rb25 box. RB25det box is a good 20kgs heavier and wider.

RB25vsRB20.jpg

Cheers man thats heaps of difference i deff got a pissy gearbox:(

Edited by fubar
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  • 10 months later...
Reggi34dr Rising Star

Reggi34dr

Posted
Posted

yes i know i'm posting in a year old thread, let it be.....

had my car on a hoist yesterday to check a couple of things and discovered my g/box has a little kangaroo stamped under the RP71C #1 code.

is this a common thing for these g/boxes?

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