Looking For A Torque Split Controller

[0zhiph0p]

Hi, I'm new to the skyline scene, I recently bought an r32 gtr for daily street use. And I'm looking at fitting a torque controller. I've been looking at the hks kansai one from rhdjap and other places but I haven't seen much feedback from people that have them. I haven't realy seen many that look worth while. I'm looking at spending up to maybe $500 and just wondering what's out there that people are using/ have used and are happy with. The main goal is to be able to switch 2wd-awd and handle well on turns hills track etc. to get some more grip down.

Thanks guys

[R.3.2.G.T.R]

search for mountainrunner torque split unit, saw it for sale recently, will fit the bill perfectly

[The Dan]

+ 1 for mountainrunnner. Paul's units are second to NONE!

[tricstar]

I have used the Ruzic (Mountainrunner) controller and it was really good but if your main gaol is the ability to switch 2wd-Awd, then look at "Full Race"

[The Dan]

  On 12/09/2012 at 2:10 PM, tricstar said:

I have used the Ruzic (Mountainrunner) controller and it was really good but if your main gaol is the ability to switch 2wd-Awd, then look at "Full Race"

If your main goal was switching 2wd-4wd then you would put a switch...on the 4wd pump

[0zhiph0p]

Is it possible to run this mountain runner and a 2wd 4wd switch? And where's the best place to buy one ? Thanks guys

[Moodles2]

  On 12/09/2012 at 8:20 PM, 0zhiph0p said:

Is it possible to run this mountain runner and a 2wd 4wd switch? And where's the best place to buy one ? Thanks guys

Mountain runner is the guy who makes the controller, looks like this: http://www.timeattack.com.au/content/view/30/65/ (old version) or the new version: http://www.topsecret.net.au/ruzicengineering/ATTESA_Controller_II.html . I actually have the old one myself, but never got around to installing it.

4WD controllers are only plugged into the G sensors (located under the centre console near the gearstick), and 2WD/4WD switches basically just open or close the circuit on the 4WD fuse in the driver's fusebox. So it is possible to run both.

[BCNR33GT-R]

Can you run torque spliters in 33 GTR non v-spec?

[Moodles2]

Of course, all torque splitters do is manipulate the G sensor voltage output.

[BCNR33GT-R]

i heard that it burns out the diff or somthing though on the 33s, is that true?

Edited September 13, 2012 by Turbo tommy

[sydking]

Paul ruzic od Tarzan one id say

Though if you jsut want to swithc simple on and off, THen get a switch done for 1/10 of the price a full controller will set you back

[Moodles2]

4WD fuse trick (aka what the 2WD/4WD switches do) only works on R32s. It will overheat and damage the transfer case on R33s and R34s because of 5% or so preload on the transfer case at all times (where R32's have 0% preload)

[BCNR33GT-R]

yeah thought so i knew i was right there, thanks

[The Dan]

  On 13/09/2012 at 8:23 AM, Moodles2 said:

4WD fuse trick (aka what the 2WD/4WD switches do) only works on R32s. It will overheat and damage the transfer case on R33s and R34s because of 5% or so preload on the transfer case at all times (where R32's have 0% preload)

If that were the case, wouldn't it wear the clutch packs out while driving around normally and no extra torque applied?

Sure, you'll get some preloading there and have 2% applied to the front wheels at all times but switched off or on, you've still got that amount applied.

The oil is still pumped around for cooling and the clutch packs are still lubricated.

[0zhiph0p]

I saw a ruzic torque controller brand new for sale for 450 for the gen 1 I think. Is this a reasonable price, and how many different models are there and is the first gen ok for what I'm after?

[Moodles2]

  On 13/09/2012 at 8:57 AM, Elite Racing said:

If that were the case, wouldn't it wear the clutch packs out while driving around normally and no extra torque applied?

Sure, you'll get some preloading there and have 2% applied to the front wheels at all times but switched off or on, you've still got that amount applied.

The oil is still pumped around for cooling and the clutch packs are still lubricated.

I was under the impression with the 4WD fuse pulled, the pump isn't powered and the oil doesn't circulate

[doo doo]

  On 13/09/2012 at 12:12 PM, Moodles2 said:

I was under the impression with the 4WD fuse pulled, the pump isn't powered and the oil doesn't circulate

The oil for the transfer case is circulated by an oil pump attached to the front of the transfer case that is driven off the gearbox output shaft - (the shaft continues through the transfer case and clutch hub to the drivehaft), so oil is pumped through the transfer case oiling system any time the rear wheels are turning. (because I'm crap at word here's a pic - the oil pump is on the left) The actuation for the hydraulic clutches is a separate hydraulic system- which is the system affected by the pulling of the fuse.

When I asked UAS about the updated Ruzic controller before it was available they estimated it would cost about the same as the old one (600ish) without the GPS system which was 200ish extra. They also mentioned it would probably include a drag full time AWD function, but don't know if that's the case. Apparently the newer one has better processing speed than the old one, and looks like you can run more maps. Depends what you're going to do with it- if you get the updated one you can buy the GPS system later if you want to do your own track timing etc

[tricstar]

  On 13/09/2012 at 12:12 PM, Moodles2 said:

I was under the impression with the 4WD fuse pulled, the pump isn't powered and the oil doesn't circulate

I've just been thru all this and the R32/33/34 gtr systems are pretty much the same except for the computer, and it is the computer that sorts out the pre-load through the solenoid, aside from the "Fail safe" solenoid and the A-LSD. the systems are identical...

therefore just like with the R32 GTR if the system is controlled and doesn't prime/pre-load they are all the same and in RWD. there are already a couple of threads on that.....

also not all controllers are just piggy backed on the factory g-sensor, ie the "Full Race" one which for $500 has its own faster computer and digital G-sensor, so the only thing the facytory Attesa computer does is look after ABS.

And for any GTR, 32/33/34 has RWD at the flick of a switch, with zero pressure at the transfer, but in auto mode has the R32 the same as R33/34 with pre/load so no delay in 4WD.

so much hear/say, and so few actual know how the systems work..

[The Dan]

  On 13/09/2012 at 10:08 AM, 0zhiph0p said:

I saw a ruzic torque controller brand new for sale for 450 for the gen 1 I think. Is this a reasonable price, and how many different models are there and is the first gen ok for what I'm after?

The Ruzic controllers are magic. Such a high quality product and local support if required. Fully tunable maps and easy to install.

He's been making them for over 6 years and I'm yet to hear of a failure.

The WTAC R34 GTR owned by Mark Berry and Russell Newman was equipped with a fully custom version that learned the track via gps and you could tune the entire track into the controller and tweak every part of every corner with multiple GSensors all inputting simultaneously.

Everything Ruzic does is impressive to say the least. If you want a price on a current model I'll hit him up on Sunday when I'm speaking to him again. He's currently building a logging system for us that makes the racepak logger look like a fucikng abacus.

[SS8_Gohan]

some interesting info in here

http://www.gtr.co.uk/forum/165671-all-these-crazy-new-attessa-mods-4.html