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Hicas?

Guest Sim32

By Guest Sim32,
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Guest Sim32

Guest Sim32

Posted
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hey guys..

i just picked up my 32 gtst. and its really toey and soft in the rear end. This is the first car i have had with hicas (4ws) and i am finding it quite strange. What is hicas suppose to do, does it work at high speeds or low speeds? can u feel it in the rear?

also this car has stock shocks and springs in the back but lowered springs in the front. Can i lower the back without upsetting the 4ws? also..is there anyway to turn the hicas off? aka pull out the fuse? and if so, how does the car go without hicas.

cheers.

Sim

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MM2death Grand Master

MM2death

Posted
Posted
Originally posted by Sim32

hey guys..

i just picked up my 32 gtst. and its really toey and soft in the rear end. This is the first car i have had with hicas (4ws) and i am finding it quite strange. What is hicas suppose to do, does it work at high speeds or low speeds? can u feel it in the rear?

also this car has stock shocks and springs in the back but lowered springs in the front. Can i lower the back without upsetting the 4ws? also..is there anyway to turn the hicas off? aka pull out the fuse? and if so, how does the car go without hicas.

cheers.

Sim

Hey Sim32,

Hicas is only like a 1 degree turn in the rear wheels and only kicks in at 80km/h and above (some say it works at all speeds)...correct me if i'm wrong. It will make that car feel somewhat floaty in the rear end. It's suppose to help overall handling of the car, but most people will agree that it's not that great at all. Yes you can lower the rear without doing anything to the hicas. You can get hicas locking kits that disable it.....and i'm not sure what will happen if you pull out the fuse....maybe do a search.

Here are some other threads that might be helpful:

http://www.skylinesaustralia.com/forums/sh...=&threadid=8292

http://www.skylinesaustralia.com/forums/sh...=&threadid=8970

http://www.skylinesaustralia.com/forums/sh...=&threadid=9188

Scott.

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Guest Sim32

Guest Sim32

Posted
Posted

hmm, thanks guys. Still not to much is known about it. You can purcahase that kit, but i think that will be the last straw. I might just get some stiffer lower king springs in the back and see how that goes first. As when u turn in to a nice long corner the car does seem to hold very well. But when u back off and change direction or hit a bump, the car gets very very skatey indeed.

hmm intresting.

cheers sim.

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Lozza150 Proficient

Lozza150

Posted
Posted

Here is something i found on the web.....

Loz

What is HICAS? And do I have it?

Good question. HICAS is Nissan’s version of four wheel steering. It is an acronym for High Capacity Actively Controlled Suspension. Unlike other Japanese car manufacturers 4WS (eg Honda’s system) HICAS never exceeds +/- 1°. It is designed for high speed response rather than parking manoeuvres.

The system is electro-hydraulic - the ECU in the boot directs a hydraulic actuator at the rear axle to steer the rear wheels using the rearmost suspension links. The result is usually no more than 0.4° of movement. HICAS gives a touch of counter steer before settling with the rear wheel pointing the same way as the front. (Maybe this explains why my Skyline feels so loose on high-speed gravel...) This results in sharp turn-in, and enhanced stability at medium to high speeds.

Anyway, have a crawl under the rear of your Skyline and have a look. After following the description in the paragraph above .. you have HICAS. NB: The R33 series has an electronic actuator, it looks slightly different.

http://www.overflow.250x.com/diagnostics.htm

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Lozza150 Proficient

Lozza150

Posted
Posted

and for those wondering about "Super" HICAS.......

Skyline's Super HICAS

However, Nissan Skyline GT-R still proved that 4WS is worthy for demanding driving. Aided by computer, its Super HICAS system enable tightly-controlled power slide that cannot be implemented by any alternatives. When attacking a corner, the rear wheels will steer in reverse first in order to sharpen the initial steering response. Then, when sensors sense that the car responds to steering, the rear wheels will steer in the same direction as the front wheels, thus immediately introduces rear-tyre slip which help adjusting the attacking angle. Since the computer is monitoring the whole process, the amount of oversteering is always under check. You need not to be afraid of losing control.

http://autozine.kyul.net/technical_school/...ction_other.htm

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