Rb25Det Neo, What Gearbox And Clutch?

[iruvyouskyrine]

Hey all, im dropping a RB25DET Neo into my R32 and i just have a few questions. What Gearbox and clutch would i best using?

R34 Neo Gbox with a push/pull converter or R33 gts-t gearbox. Also are the clutches different for these? I jumped on the exedy site and it reccomends a different clutch for each box.

Also, can i use my current driveshaft but get it shortened to accomodate for the longer gearbox?

Thanks!

[GTSBoy]

Doesn't matter which you use. As long as the clutch suits the gearbox, you're gold.

The only consideration is that it is probably easier and cheaper to get clutches for the earlier boxes. I suppose the other consideration is that you migth be able to find a younger R34 box that hasn't been flogged to death (because 99% of R33 ones certainly have been).

Oh, and you must obtain the front portion of an RB25 gearbox's tailshaft to get the appropriate yoke section. You cannot use the skinny litle R32 front half. You take the back half of your R32 shaft and the front half of an R33 shaft to Hardy Spicer and they will look at the two pieces and say "RB25 into R32?" and you say yes and they take the pieces. Seriosuly, they have seen so many people walk in carying those bits that they can tell from 20 feet away. They don't even need you to take any measurements in the car. They know exactly how long shit has to be.

Edited November 28, 2012 by GTSBoy

[iruvyouskyrine]

Hey mate, thanks for the info

I can get an R34 Manual box cheapish, but its a pull type, and im putting it into an R32 which is a push type setup yes?

It comes with an OS Giken pull to push converter though, so does that mean i can run the gearbox with no worries in the 32 or will i not be able to use it? Os Giken says "This converts the Pull type gearbox to the Push version.Push clutches are more easily sourced". So in theory it should bolt straight onto the neo, and i can use a push type cluch (ie 33 clutch) and i wouldnt have to change any of the clutch lines in the 32.

A little confused about all this stuff haha >.<

[GTSBoy]

You're overthinking it. It's very simple. If you have a push type gearbox, then you need a push type clutch. Same with pull type. Doesn't matter which chassis it is in, as the slave cylinder bolts to the gearbox, not the car. The only hassle might be having to sort out a different clutch hose if you swap push to pull or pull to push (relative to the chassis' original clutch type - because the slave cylinder ends up in a different orientation and the old hose possibly won't reach.)

The push-pull converter does exactly that. It allows you to fit a push clutch into a bellhousing intended for a pull clutch. This frees you from having to find a pull clutch (which can be harder and more exxy), but I'm not sure what it means for the hydraulics in your 32, because I'm not familiar with the kit. You can tap the extra holes in an RB gearbox to mount the other type of slave on there easily enough. The kit might just supply an internal pivot converter and then drill/tap the slave mounting holes, or it might keep the wrong slave on there and do something more tricky inside. Ask the seller for some photos. I've seen the for sale thread on here, so I'm familiar with what he's put up already, and it's not enough to tell exactly what it has.

cheers