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Rb25 Box Into A 32

Fabs_32

By Fabs_32,
in South Australia

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Fabs_32 Collaborator

Fabs_32

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My stock gearbox on the 32 is due for a rebuild shortly as there seems to be alot of crunching going on in there (and yes I do know how to use a clutch). I've been told it's my syncros.

But lately I've been thinking about doing a rb25 gearbox conversion instead, how hard is it? Has anyone done it before? Is it even worth it?

I know i'm gonna need a different tailshaft. Does it have to be a custom shortened 32 one?

What's involved with the speed sensor, coz i've heard it's a different setup.

Does it bolt straight onto the rb20?

I think i'm way over my head here. Too many questions, that cant be a good sign. :)

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https://www.sau.com.au/forums/topic/288880-rb25-box-into-a-32/
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MYCEF3 Collaborator

MYCEF3

Posted
Posted
My stock gearbox on the 32 is due for a rebuild shortly as there seems to be alot of crunching going on in there (and yes I do know how to use a clutch). I've been told it's my syncros.

But lately I've been thinking about doing a rb25 gearbox conversion instead, how hard is it? Has anyone done it before? Is it even worth it?

I know i'm gonna need a different tailshaft. Does it have to be a custom shortened 32 one?

What's involved with the speed sensor, coz i've heard it's a different setup.

Does it bolt straight onto the rb20?

I think i'm way over my head here. Too many questions, that cant be a good sign. :)

Hey man!

Yes 25 box in to 32 is fine.... I mean GREAT :D

In my cefiro i had my rb20 gearbox changed to a rb25 gearbox due to me blowing the 20 :P !

Not sure how much it cost i need to find my recipt.

and yeah the tail shaft needs to be shortened (heard a ford one can fit... not sure though if it was bu!!sh!t :D )

But over all... it IS worth it, 25boxs are made strong!

dark.sky Grand Master

dark.sky

Posted
Posted
My stock gearbox on the 32 is due for a rebuild shortly as there seems to be alot of crunching going on in there (and yes I do know how to use a clutch). I've been told it's my syncros.

But lately I've been thinking about doing a rb25 gearbox conversion instead, how hard is it? Has anyone done it before? Is it even worth it?

I know i'm gonna need a different tailshaft. Does it have to be a custom shortened 32 one?

What's involved with the speed sensor, coz i've heard it's a different setup.

Does it bolt straight onto the rb20?

I think i'm way over my head here. Too many questions, that cant be a good sign. :D

My gearbox IS rebuilt and it does that, Ive been thinking RB25 box aswell. Will keep an eye on your progress if you do it :D

ISC-Performance Veteran

ISC-Performance

Posted
Posted

Put one into my gtst years ago, was well worth it (very hard to break). I picked up the box and short shifter for $950 and the install and other parts cost around $750, need to get the yolk modified ($150) and also need different speed cable (I think they used R32 GTR). Box bolts straight up to bell housing etc.

Ryan

Fabs_32 Collaborator

Fabs_32

Posted
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Posted

Cool, so it's a bit easier than I thought.

i can show u how to mod the rb25 speedo sender with a navara end for a matter of $45! i did it on mine!!

So what the navara end connects into the rb20 cluster? I'll definately be hitting u up for this adrian.

Now, does anone have a good rb25 box lying around? :(

Ryanrb25 Grand Master

Ryanrb25

Posted
Posted
navara end fits to the end of the rb25 speedo sender.. pretty easy mod..

yea it was easy because i did it lol

i also made the cross member.

it's easy mate, just extend the existing with and get the bolt hole positions in the right spot. Adrian's is strong as feck. hehe

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