Running GT-R in RWD

[always_me]

in the engine bay there is a fuse you can take out marked 4wd fuse, or under your dash i think its the top left or top right one, you can try by removing thefuse while the car is on, it will bring up the 4wd light, negative aspect is you will destroy a lot of rubber ripping hellies.

[[[d a n n y]]]

hm..so if i have the 4WD light on means the 4WD is not working is it?

rubber ripping hellies?

i am just doing it so i can run on the dyno

[always_me]

when 4wd light is on, means your in rear wheel drive mode, you know what hellies are, if not better you dont.

[[[d a n n y]]]

um..no i dont would u b kind enuff to tell me plz?

hellies? donuts?

[[WLDCRD]]

hahaha glazed donuts!

i am told that you should take out the front driveshaft as to not damage the clutch pack. On street its fine cos the front wheels are in motion but on a 2wd dyno, the fronts are stationery.

[Guest Variable]

On 33 & 34 GTr's the front clutch packs are always slightly loaded so just pulling the fuse won't work. On 32's it's not a problem.

[[[d a n n y]]]

when i pull the fuse out

the ABS check light and the 4WD check light comes on as well

is that ok?

[dickogtr]

I'm also very interested if anyone can sujggest a way to switch off the 4wd without switching off the ABS.

[Richyz]

There is a single power wire (according to the wiring diagram) that runs to the motor which pressurises the 4wd clutch pack. Putting this through a switch should provide an easy on/off. Unfortuantley last tme I just found the wire for the 4wd light....and have been too lazy to fix it. When I get it back I might try again.

[relicr31act]

Couldn't you jus go on a 4wd dyno?

[Ska]

Just a question, I am just about to get my Stag just wondering how to put it back into 4wd mode, do you just reconnect it back up and wham it goes back?

[Guest DIRTgarage]

At which end? The front diff (sump) or the transfer case? Isn't the flange on the front diff? If you disconnect there, won't the shaft turn and hit the bottom of the car?

Just remove the four bolts in the front of the shaft and lift it out....the socket it fits in is sealed from the transfer case...i.e. no oil/fluid will escape.

[markr34gtr]

all too much effort removing front drive shaft...

just pull the 4wd fuse in the engine bay on a 32 gtr...

on 33 and 34 gtr s pull fuse and then crack the bleeder nipple on the transfer case to release the presure in the line which 33 & 34 s keep pressure in even when in 2wd mode.

hope this helps.

[Ska]

Yeah but all that means a pinch of poop to me as I am a noob at this whole "knowing mechanical parts" thing

Just pulling a plug and pumping the brake is just about the limit of my minds ability .

So question is which way is the correct way, Jay's pulling plug and pumping brake or Mark's pull fuse, crack bleeder nipple and release pressure?

And again with both methods, what is the correct proceedure for re-instating 4wd mode?

Thanks!

[Penfold]

Hiyas,

Just wanting to see if anyone had an update on the situation. Obviously the computer method sounds easiest but has anyone actually used it on the dyno?? any potential for damage, no chance of fronts engaging, etc?

Secondly just wondering if someone could step me through slowly the method to disconnect the front driveshaft (ie, raise on hoist, etc). Maybe deservers a FAQ.

Cheers,

Penfold

[Leewah]

Just undo the 4 bolts connecting the front shaft to the transfer case, remove shaft and dyno away!

No need to pull fuses, no need to bleed stuff. It's a very simply 3 minute operation. You don't need to be a rocket scientist to do this.

This topic comes up every couple months now. Can a mod PLEASE sticky this thread before another pops up in the near future.

[Penfold]

Cool,

So I check it out. Just undo the 4 bolts from the front of the driveshaft (connecting to the front diff) and it should just pull out from the socket where it conect the transfer case. Looks good.

But, I just wanted to check how long the can be driven like this. Is there any potential for damage aside from the possibility of dirt/rocks accumulating in the sockets, etc. So say a 20 minute drive to dyno after hoist would be fine & then 20 minutes back to put driveshaft in should be fine.

I'll post a pic of driveshaft later & also when i do it a few shots of it coming out.

[Duncan]

absolutely no problems driving to the dyno and back without a front driveshaft

[GTRsean]

Proven method:

To keep ABS and run 2WD (for r32 only). undo the plastic liner on the boot latch and pull the connector on the relay shown in pic:

Plug it back in to get 4WD again.

[Aztec]

I've pulled the fuse in my dash a couple of times to finish off my rears before I get new rubber and have noticed the air-con doesn't work. Fan works fine but just not cooling down?? I wouldn't have thought these are interconnected. Strange....