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Old 08-25-2013, 10:54 PM   #10
Suit
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Quote:
Originally Posted by BoredEE View Post
Most people use the bellhousing off a RB25 or RB26 transmission to bolt on the back half of the transmission.

Everything will line up clutch wise, the only problem is shifter location.

If you google hard enough you can find the distance in lengths of the shifter positions.

I haven't see anyone run an adapter plate to bolt on a 300zx trans to a rb25.
Sounds like more of a headache and more expensive than just getting a bellhousing.

This company makes Z32 shifter relocation hardware which might get you closer to the correct position.
http://www.xcessivemanufacturing.com/

All Z32, RB25DET, RB26DETT have the same internals: gears/bearings/synchros/forks.
The difference is in the length of the mainshaft, shifter linkage and 4WD splitter.

Interestingly enough the 90's era pathfinder V6 5spd shares the same transmission but with different ratios.


If you plan on making reasonable HP and you want to work on your car.
I recommend the RB20DET/RB25DE transmission. It's smaller and lighter. Much easier to remove and install compared to the other transmission.

If you want to make 350+HP(wild ass guess on the HP limit or break point) I would go with a RB25DET transmission.
Believe it or not the motor set came with an adapter plate which i also figured was spacing the transmission back to compensate for the shifter and shaft length. how lucky!

Quote:
Originally Posted by Tom N View Post
I don't know anything about the RB motor. I was just correcting some miss information about the Z32 tranny.
thanks for the input anyway man, help is always appreciated!

Quote:
Originally Posted by jr_ss View Post
Z32 transmissions have been known to be behind some engine setups making serious power and dragged often. However, used they suffer from worn synchros or baulk ring retaining clips that fall off and end up causing the grinding, not the synchros. If you purchase one, I recommend having it gone through.

The NA and TT are identical transmissions minus the speed sensor gears and the bell housing, specially around the starter pad to accommodate the larger flywheel. I have yet to find any information showing they are two completely different transmissions internally.
already inspected the transmission its in great conditon so thats great to hear! the car will be a spirited driven dd so it wont be harsh on the tranny, but the motor will put out 450-500whp so it will be fun, got our hands on a pretty sweet hks manifold and a 3076

Quote:
Originally Posted by fliprayzin240sx View Post
My bad, was thinking RB25 NA and Turbo transmissions..
all good man!
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