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VG30DE/TT tranny on RB25DET?

DETurbine

By DETurbine,
in Engines & Forced Induction

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DETurbine Enthusiast

DETurbine

Posted
Posted

I have heard that this can be done, but am not sure if it is the true or false.

If it does work work what tranny can you use (VG30DE and/or VG30DETT)?

My RB25 tranny has gone out and I can get ahold of a VG30DE tranny here in the states for $200. If I were to get ahold of a RB25 tranny it would at least cost me around $800+.

Help would be thankfully blessed.

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SteveL Mentor

SteveL

Posted
Posted
I have heard that this can be done, but am not sure if it is the true or false.  

If it does work work what tranny can you use (VG30DE and/or VG30DETT)?

3 big problems:

- bell housing bolt pattern is different.

- VG30DE/TT trans use a remote shifter arrangement quite unlike the RB25DET gearbox. Probably a major headache to get to work in any car other than a Z32.

- starter motor bolts to the side of the bell-housing and faces in the reverse direction to the RB2x arrangement. At the very least trans tunnel clearance would be an issue.

I'm sure it can be done - anything can be given sufficient $$$ - but I'd strongly suggest investigating what's needed very carefully.

SteveL Mentor

SteveL

Posted
Posted
ok thanks for the reply and info. Now the next question is are the internals of the transmissions the same?....could I use a VG30DETT 3/4th syncro gear in my RB25DET transmission?

If you can supply me some more exact details of the parts you need I can check FAST to see if they are the same. Ideally need VIN numbers for the cars the parts/gearboxes are from, or at least a year of manufacture. I realise this is probably not possible for the RB25DET trans as being in the US I suspect you bought the gearbox from an importer (??).

dangerous_daveo Grand Master

dangerous_daveo

Posted
Posted

Over here a lot of the time cost wise the option is rebuild box or get a new one. There isnt THAT much in it. Over there I would hope anyway rebuilds of gearboxes would be the same or less. So that would make me think a rebuild would be the best option, and then you know you got new bits, not some 2nd hand bit of junk (which will most likely be fine, but you can never be too sure)

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