OS Giken Grand Touring Twin Plate Clutch
 

The number 1 reason is "driveability" - the newly designed pressure plate allows for more room to machine holes in the pressure plate. This extra room and holes allow OS to install clips inside the plate.

Some benefits to the clips in the Pressure Plate are:
-Smoother engagement (standard TR & STR engagement is harsher than stock (some customers like this b/c of more aggressive engagement (on/off release of power), but some don't)
-Holds floater plate down, so when the clutch is disengaged, no annoying chattering when parallel parking or sitting at stop light
-Ability to pick pedal feel, hard or soft



The best reason to use this clutch set up is to maintain that OEM like engagement and pedal feel, even with 700HP!!



BTW this clutch is going to be installed into a daily driven NYC Twin Turbo 370Z...

Hm, interesting.

Next year for sure.

WhAt is weight of the entire assembly? Thanks

provide details specs please. also, does this clutch solve the CSC failure problem?

interested.... more details, weight, csc, etc

I'm hoping earlier!

:happydance::happydance::happydance:

:eekdance: Stillen SC and OS Giken GT TP Clutch FTW!!! :eekdance:

OP could you add the manufacturer link to your post? I'm having a hard time finding this product on OS Giken's site... :(

Interested too. Cant find info on gikens site.

I will be running this clutch as well. Can't wait.....

alone no, but add in Zspeeds HD csc and you should be good.

Anyone actually running this system yet? feedback...?

I know of 2 TT's that have it. Not sure if they are on the boards though

Would love to hear impressions on street driveability etc....

I was offered to drive the car but didnt. John @ Z1 got to drive them quite a bit. Im sure he has alot of feedback he could give.

It's kinda up in the air now. If Zerolift can get it soon, I will be running this clutch. If not, Competition Clutch will be the winner. Link below.

Products

Mine has been at the shop being installed since last week :|
The shop must have gotten busy or something cause it has been a week and a day now. As soon as I get my car back I will share.

Awesome! Hope you get it back soon and post up your impressions!

I know one of them is...

My thoughts:
A clutch alignment tool would of been a nice addition to the kit.

I was cross eyed after tightening all the bolts... I'd highly recommend labeling the bolts to ensure you follow the proper pattern. Installed the clutch, went to go bleed the system, and it was just never able to get the right feel to it.

After looking into it, my CSC had failed. Z1 worked with Zspeed and was able to get me one of their HD CSCs pieced together with a quickness. Got the new CSC in, bleeding was easy and straightforward.

Never really drove the Z around with the turbos without the clutch, so keep that in mind. I was going to wait and get all the use I could out of my stock clutch, but after realizing how big of a pain it was to pull the motor and trans I decided to upgrade while it was all out. I wish I would of decided to upgrade the CSC from the beginning, because that would have saved me pulling the trans a second time.

As far as how well it holds the power. Absolutely zero complaints, it seems to handle all the power the turbos are throwing at it so far. It was certainly a lot grippier than stock. The car felt much quicker with the clutch/flywheel. (I did have a period where I had a massive boost leak, so I was technically NA for the shakedown run)

Then comes the true beauty of the clutch, how easy it is to live with. After driving on it for around 5k miles or so, I can happily say that my left leg has barely noticed any difference.

The combo does have a decent amount of chatter, and a few people have thought something was "wrong" with my car because it was making odd "noises".

Bad news is now my master cylinder appears to be going. I will have full pedal feel in the morning when I drive to work. Occasionally by the afternoon I'll only have a few inches of pedal, but after half an hour of driving, the pedal feel will be back to full.

Cliff Notes:
Seems to be able to hold the power of a TT with no issues
Very driveable and easy to live with
Some chatter - to be expected
Stock CSC went on me
Pricey

So if you want a clutch that can handle a lot of power and still retain its streetability with a bit of noise...then this isn't a bad option if its within your budget. I'd recommend the upgraded CSC while you're at it though.

Great info. I will either get this one or the Competition Clutch. Hopefully, Zerolift gets a good bead on the OS Giken. I have had outstanding results with them in previous vehicles.:tup:

Could it still be air in the clutch line?

nope you are on your own for the hydraulics, be advised that you need to order the correct aftermarket replacement for an os twin plate.

Three year necro. Nice :thumbsdown:

NO matter how good a clutch system is. You need to replace the CSC along with the master cylinder is what I"m getting from reading all these threads about clutches.

Yup the csc is gonna die no matter what, and if u change the flywheel i garuanty you will get chatter no matter what flywheel it is.