GTR R33 RWD-AWD TOGGLE ??

[04-LOOX]

Hey guys I’d like to know what’s needed to make the r33 gtr like the r32 gtr when it comes to making it switchable between rwd and awd.

ive heard r33 GTR’s are always RWD and they switch to awd when they start losing control.

i don’t have any running gear in it anyways so I’d like to know what I’d need to put. I have a broken r33 gtr gearbox but the transfer case is fine.

should I buy an r32 gtr front sump and diff and an r32 gearbox or what parts should I be using? 
 

TIA.

[BK]

The 32 and 33 gearboxes, fronts diff and transfer cases are all the same. The change is within the electronics and hydraulics. I've explained this all before so I'll be brief. Essentially the 32 has one transfer case solenoid which can be electrically disabled and the 33 has two solenoids, which one provides a constant small pressure preload on the transfer case.

On a 33 you have to depressurise this second "failsafe" solenoid to have no transfer case preload. If you searched in the driveline forum section you would've found this on how to do it:

 

[04-LOOX]

Thank you heaps for your help.

so the thing that people say about the r33 gtr being constant rwd unless it senses slip in the rear and then converting it to awd is just a myth? 
 

thanks again for the help I appreciate it

[BK]

Not entirely that simple. The 33 and 34 GTR is essentially rwd like the 32 until it is told to actuate the transfer. There's only a 1 - 2% of torque transfer under normal conditions if that, as this second failsafe solenoid allows about 30psi to the transfer actuator just to preload it. Under a 50:50 torque split the pressure applied is upwards of 230psi.

The whole idea is that having this slight preload allows the torque transfer to be initiated much faster than having no preload like the 32.