Stagea Awd Or 4wd

[Moff]

Hi Guys,

Wonder if you can help me solve a debate in the Uk on RS Four Stageas please

Do they have the GTR 4WD attessa, or do they use the GTS-4 permenant AWD ?

Thank you

[_Ryan_]

i am 99% sure that a GTS-4 is the same ATTESSA as a GTR, but with thinner/weaker everything, same as a stagea. But things are different dimensions so they won't switch between GTS-4 and Stagea IIRC.

[mitchy_]

awd = 4wd

[Moff]

awd = 4wd

I agree, but I am using it to differentiate between the 2.

AWD would be if the Stagea is permenant 4WD

4WD would be if the Stagea uses the GTR ATTESSA 4WD drive system, IE it is RWD in normal mode ?

Does anyone know

[_Ryan_]

I agree, but I am using it to differentiate between the 2.

AWD would be if the Stagea is permenant 4WD

4WD would be if the Stagea uses the GTR ATTESSA 4WD drive system, IE it is RWD in normal mode ?

Does anyone know

that is silly

4WD=AWD

only time AWD is different is on a vehicle with 6+wheels, all of which is driven, then AWD=6WD etc, but same shit, all wheels driven.

4WD can be different , eg, a 6wheel vehicle with only four wheels driven, but in these private passenger vehicles, i doubt you will have these issues.

[GoldZilla]

AWD would be if the Stagea is permenant 4WD

4WD would be if the Stagea uses the GTR ATTESSA 4WD drive system, IE it is RWD in normal mode ?

Those should be the other way around - 4WD would signify a permanent system like that used in a Subaru.

AWD would be a better fit to what all ATTESA ETS-fitted Skylines use, including the Stagea and the GTS4... The Skyline GTS4, Stagea and GT-R are predominantly RWD until the computers sense a loss of traction at the rear wheels, at which point they transfer drive to the front wheels.

ATTESA-ETS is an acronym for Advanced Total Traction Engineering System for All-Terrain with Electronic Torque Split.

More info here: http://en.wikipedia.org/wiki/ATTESA

[Moff]

Those should be the other way around - 4WD would signify a permanent system like that used in a Subaru.

AWD would be a better fit to what all ATTESA ETS-fitted Skylines use, including the Stagea and the GTS4... The Skyline GTS4, Stagea and GT-R are predominantly RWD until the computers sense a loss of traction at the rear wheels, at which point they transfer drive to the front wheels.

ATTESA-ETS is an acronym for Advanced Total Traction Engineering System for All-Terrain with Electronic Torque Split.

More info here: http://en.wikipedia.org/wiki/ATTESA

Thank you

Any idea if the GTR torque split guage can be added easily enough ?

[Duncan]

Oh and you should be able to get the gtr torque split gauge working, but you would need to get the pin outs from the attessa ecu in the cargo area and run wires to teh gauge. also I thought the gtr gauge was just a part of the dash cluster so I am not sure how you would use it.

[pixel8r]

I think some people are getting the whole thing confused.

There IS a difference between AWD and 4WD (please feel free to discuss further if you disagree).

Basically, AWD means that the system is permanently driving all 4 wheels, whereas 4WD is used to describe cars that can optionally switch to 2WD (ie. mechanically - the fact that attesa can do it electonically doesn't count).

Subarus etc are permanent AWD - hence why they have a badge that says AWD.

ATTESA - and hence the GTRs, and pretty much every nissan AWD car (except most of their SUV range) are also AWD since the ATTESA runs permanently and even in RWD mode the front wheels are still technically driven as well - just that the torque split is about 95% to the rear.

Hope this makes sense.

EDIT: and to confuse the issue further - I believe all 4wd/awd nissans use ATTESA - just that its modified to suit the application. The system is very similar between the GTR, stagea, GTS-4, GT-4, etc...

Edited January 12, 2009 by pixel8r

[KiwiRS4T]

I think some people are getting the whole thing confused.

There IS a difference between AWD and 4WD (please feel free to discuss further if you disagree).

Basically, AWD means that the system is permanently driving all 4 wheels, whereas 4WD is used to describe cars that can optionally switch to 2WD (ie. mechanically - the fact that attesa can do it electonically doesn't count).

Subarus etc are permanent AWD - hence why they have a badge that says AWD.

ATTESA - and hence the GTRs, and pretty much every nissan AWD car (except most of their SUV range) are also AWD since the ATTESA runs permanently and even in RWD mode the front wheels are still technically driven as well - just that the torque split is about 95% to the rear.

Hope this makes sense.

EDIT: and to confuse the issue further - I believe all 4wd/awd nissans use ATTESA - just that its modified to suit the application. The system is very similar between the GTR, stagea, GTS-4, GT-4, etc...

The difference between early and late Atessas is not AWD v 4WD. They all do the same job, driving the rear wheels and shifting drive to the fronts when needed. The difference is that early ones were purely mechanical and the later ones are computer controlled.

[BrynDETT]

i was allways under the impression that 4wd is where you have high and low range.. and awd was just the same thing without them options... so id say a gtr or a subaru would both be awd

[_Ryan_]

This is quite possibly the most retarded thread I have ever seen on sau.

[BigBoyDan]

This is quite possibly the most retarded thread I have ever seen on sau.

haha agreed

[Jezboosted]

yeah as far as i am aware 4wd means you have a transfer box for hi/lo 2wd/4wd. AWD is all of our softroaders (rav4's, crv's etc) and sports cars (evo,wrx, gtr etc)

[Moff]

We seem to be getting away from the topic chaps, although all replies are helpful.

Does the Stagea RS Four share the same system that controls the 4 wheels ?

Although diff ratios are different, just to add to the mix

[KiwiRS4T]

We seem to be getting away from the topic chaps, although all replies are helpful.

Does the Stagea RS Four share the same system that controls the 4 wheels ?

Although diff ratios are different, just to add to the mix

Your original question makes a false distinction. See post #10 for the correct answer. So the early GTR would be mechanical the later GTRs computer controlled as per the Stagea.

[_Ryan_]

Your original question makes a false distinction. See post #12 for the correct answer.

Fixed!!

[BensDR30]

The RNN14 GTiR and U12 Bluebird SSS are purely mechanical ATTESA (dunno about U13). The GTR, C34 Stagea, etc are all ATTESA-ETS. As has already been mentioned, the ETS signifies Electronic Torque Split.

The AWD/4WD definition debate is a royal PITA. There are full-time 4WD systems out there like the Subaru 'symmetric' design, there are multi-mode systems like the X-Trail, and others that are 'on-demand' type systems. One of the benefits of the ETS in the Stagea is the 'Synchroniser' switch - which is great for those low-traction jobs (or circlework in mud...)

[Paramour]

awd = 4wd

Part-time 4WD

This most basic system provides a choice of settings that can be changed depending on your driving situation, but cannot be left engaged on dry pavement. If it is, the transfer case will wear, resulting in mechanical damage. The settings range from 2WD, 4WD High, and 4WD Low. In vehicles that have part-time 4WD, each of the four wheels constantly gets 25% of the torque to prevent wheelspin when in the High or Low setting. In newer models, the driver can shift from 2WD to 4WD High while driving, but must come to a complete stop to shift into the 4WD Low setting. 4WD Low should only be engaged in extreme off-road situations. One drawback of part-time 4WD is that it must be continually engaged and then disengaged in conditions of light rain or snow. This type of system is best for people who really don't need 4WD, but occasionally go off-roading and want a little extra security when it snows.

Full-time 4WD

Unlike part-time 4WD, full-time 4WD, is just that--a system that can continually remain operating. This more advanced, convenient form of 4WD allows you to choose between all of the same settings, but can remain engaged while on dry pavement. Added to the High and Low settings is an automatic or full-time 4WD setting. As with part-time 4WD, the shift from High to Low must be made during a complete stop on most vehicles. Full-time 4WD is best for people who regularly drive in slippery conditions where constant shifting between 2WD and 4WD can become tedious.

All-Wheel Drive

All-wheel drive is similar to full-time 4WD in that the system is always sending power to the wheels with the most traction, but AWD has no 2WD switch. It is always operating in 4WD mode. When the road gets slippery, the AWD system locks the axles and automatically distributes power to all four of the tires. In many cases, AWD vehicles have no on/off switch. Some AWD systems are more rugged than others, though most can't be taken into extreme off-road situations. If the AWD system allows the driver to switch to a "low" range gearing setting, like in the Dodge Durango and Toyota 4Runner, then it is probably intended for severe off-road use. AWD systems work well in cars and crossover vehicles because they don't add much weight and make them true all-weather vehicles.

[coparts41]

well i was reading an article the other night about this very subject.

Nissan Attessa Ets is all wheel drive, roughly 80% rear 20% front until a rear wheel looses traction,

there is a high pressure pump above the rear diff that pumps approx 288psi that feeds a variable

drive to the front wheels controlled by a Microprocesser , when you loose traction the pump pressurizes

the transfer case and loads the front wheels, apparently some Stageas have a Viscous LSD in the front.

All this sensor , processer load change takes a split second to function. However you can override

this to a certain extent, there are two switches , one on the console to lock the front diff and the other on the dash

to lock 50/50 split ,but should only be used on soft surfaces, as they were designed for snow and it doesn`t snow in Melbourne

very often.Hope this clears some mith

Dennis