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Saturday, June 16, 2018

Nissan Skyline GT-R ATTESA All Wheel Drive System Transfercase FX35 and FX45, and RB25 Auto

R32/R33 transmission and transfercase 

The R32 and R33 Transmission and transfercase are very similar.  The R34 transfercase while looking and functioning similar is actually a little weaker than the R32/R33 transfercase.

So at one time, after looking and thinking about the GR6 in the R35, and being underneath my Infiniti FX45, I decided that putting a newer transfer case on an R32/R33/R34 might be possible.  I bought a used FX transfer case. I had R32/R33, R34, and RB25 Auto all wheel drive transfercases as we do when we work on these cars for nearly 20 years.

The reason for trying it was pretty simple. Eliminate the electrical to hydraulic to mechanical that is the ATTESA system in the R32/R33?R34.  By using the direct control of a solenoid you could speed the reaction time of the system up significantly.  However once I got the transfers apart, there were a few challenges that I didn't feel like tackling at that time.

I haven't revisited this again, but it is something I would like to revisit.   I have some ideas on how to make it work, and help modernize the ATTESA system.

More write up coming ...


Mechanical speedometer drive. You can tell this trans came from an R32 GT-R

Electronic clutch lockup section from an FX transfer

Mechanical lockup from an R32/R33 transfer

R32/R33 transfercase. Notice the hole for the shift rod. Notice the pump on the external part of the case

R32/R33 transfercase. Notice the hole for the shift rod. Notice the pump on the external part of the case

Clutch pack assembly and chain


When I was growing transfercases in my garage. 


FX transfer on the left electronic lockup, mechanical lockup of R32/R33 on the right

FX transfer on the left electronic lockup, mechanical lockup of R32/R33 on the right

FX transfer on the left electronic lockup, mechanical lockup of R32/R33 on the right

FX transfer on the left electronic lockup, mechanical lockup of R32/R33 on the right

FX transfer on the left electronic lockup, mechanical lockup of R32/R33 on the right

FX transfer on the left electronic lockup, mechanical lockup of R32/R33 on the right

FX transfer on the left electronic lockup, mechanical lockup of R32/R33 on the right

R32/R33 transfercase. Notice the hole for the shift rod. Notice the pump on the external part of the case

OEM R32/R33 transfer case fill level. The transfer is not the transmission, they are separate systems. 

GR6 R35 GT-R Transaxle



Infiniti FX35/FX45 transfercase

Electronic transfercase lockup and control. Looks very similar to GR6

No hydraulics on the end. This is a electronic lockup

No hydraulics on the end. This is a electronic lockup

No hydraulics on the end. This is a electronic lockup

This is FX35 transfer on the left, and RB25 auto on the right

FX35/45 on the left, RB25 Auto on the right

FX35/45 transfercase with R32/R33 front shaft installed

FX35/45 transfercase with R32/R33 front shaft installed

FX35/45 transfercase with R32/R33 front shaft installed

Propshaft fits right in

FX35 transfer




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