Rb20box In 25det?

[nsta]

Hey guys, just wondering if i should do this, as someones putting an rb20det gearbox in an r32 gtr.

The main advantage here to me is price, a 20det over here can cost near nothing, whereas the rb25 can cost up to $$2500!

Im converting my r33 gts25t auto to manual, and would like to know what you all think of this as an option????

Also, what other things should be upgraded at the same time when the conversion takes place???, is heavy duty clutch the way to go?if yes which type should i go for?

thanks

[Col-GTSX]

If you put an rb20 box behind an rb25....

You will blow that box earlier... On a standard motor you would not have a problem.... But if you wish to push a few extra kw's you will destroy the rb20 box....

My old r31 rb20 went thro 3 rb20 boxes in 12 months (241rwkw).... Got an rb25 box and never had a problem

[B0oStEr]

A heavy duty clutch will just help you destroy the box more quickly.

[Cool Hand Luke]

A heavy duty clutch will just help you destroy the box more quickly.

<{POST_SNAPBACK}>

Agreed. My RB20 180 blew 3 gearboxes in 3 months after a got upgraded the clutch.

Sure you save money getting the 20 box, but the hastle of them blowing its not worth it. Nothing worse than sitting on the side of the road waiting for a tow truck and being off the road. Doesnt take long to wear thin

[nsta]

Thanks all,narrowed down my decision to gettin an rb25detbox.....should i still go heavy duty or not though?what type of clutch did others here use???

how much are these boxes btw?

thanks

[Col-GTSX]

I use a twin plate greddy item...

Feels standard but grips like a little boy to his mums leg at the dentist...

[carl h]

im makingh 288rwkw's on my rb20 and on the stock box, havent had a problem yet cept for a failing clutch master.

[RB240Dav]

I don't know how redily available Z32 parts are over there, but the NA clutch and pressure plate mate right up to the rb25 box.

And if you ever manage to blow up the rb25 box (which won't happen), it has the same internals as the TT Z32 box.

[nsta]

So the 25 box wont blow out anytime soon since im really thinking of getting it!!

[sproosy]

25 box is the same as a GTR box just with now transfer case for front wheels. How much power you making? From what ive seen people say on here you should be sweet with up to 250 - 300 rwkw - after that i dont know..............

[Bl4cK32]

And if you ever manage to blow up the rb25 box (which won't happen), it has the same internals as the TT Z32 box.

<{POST_SNAPBACK}>

Do you know this for certain? Have you done a rebuild using the 300zx internals?

My 25det box needs new bearings, and CBC dont list any parts for the rb25....

I need part numbers for a bearing kit in the rb25det box....