OS Giken triple for everyday driving? Raj? Last Friday I drove my G for the first time in one year and seven months...took me a while to get use to it again...its a clutch setup I would only use on freeway or track...IMO and from experience RAJ!

Why not Carbonetics ? With the setup you are going with, I am sure the Carbonetics would hold

 

Carbonetics triple failed you. Others with OS Giken with RJM bracket say its not too bad. You still using the stock bracket, no? Might want to upgrade!

 

I will look into that upgrade...Where would I order the upgrade from?

The Carbonetics is what I was using with the JWT 850bb which made over 700whp on Sharif's dyno... it did not slip at all. It's when we installed the GT35's that it would not hold.

 

i'd just get the triple and live with it.

at the 2300$ price point, you have alot of choices.
Clutch Masters
OS
Exedy twin carbon
carbonetics
tilton

 

^ I hope it's not too bad. I like driving the car daily during the summer. That said, there is not much stop and go traffic.


Here is the big 350z thread on it: https://my350z.com/forum/engine-and-...bracket-3.html

Order here: http://www.rjmperformance.com/

These turbos are making 400-500 whp on other platforms, each, so we'll see what happens on my car. They are not in GT35 territory but I think they'll fare better than the 850bb.

 

Thanks for info...I will order it and see if it helps.

The OS triple is horrible in traffic.... If anyone tells you otherwise...I will hold my "I told you so" until you install it If you have to stop and go in town...they are horrible ... Every time you stop and go, it sounds like you are racing someone

My problem if I remember correctly was the way the boost came online...Big motor small turbo's is what someone called it. Where your turbos sit I quite sure you will not have the same problems I did.

 

Rich

 

We should get him a knee brace that says "becuz racecar"

 

 

My carbonetics triple with the RJM bracket drives amazing. I can take off without even giving any gas. I will say that the carbonetics triple wasn't near as smooth without the RJM bracket so maybe the os giken will be more manageable with the bracket. I hated my os giken twin. Worst clutch engagement ever. Almost impossible to drive. It was one of the older versions though.

 

i personally would contact clutchmasters about their twin disc. you can get all different disc material and pressure plate combos.
My Spec clutch holds great but is notchy and the starter doesnt align with the flywheel sometime. quite possible all that has been fixed by now.

The bracket will def make a huge difference. Like Jeff said, with it you can get the car rolling without even pressing the gas. like you could a honda civic. no way you could do that otherwise.

 

So OS Giken is a backordered for a bit. Could consider other options still. RPS twin disc is rated 800 wtq apparently and promoted on other platforms. There is a chance I could get one made for the VQ.

str8dum1, you favor clutchmasters? Not many options for a driveable, trouble free clutch for the VQ in the 600-800 wtq range.

OS - poor driveability
Exedy - holds the power?
Carbonetics - holds the power? (Hal has several customers with issues with Carbonetics I believe)
Tilton - poor driveability

 

my spec is driveable but might not be trouble free. but its 1/2 the cost of the other options

I just mention clutch masters bc they have different disc material between models and I think different pressure plates. I dont know about RPS.

I would bet the exedy dual carbon or carbonetics dual carbon would be just fine. If you think you are going to be on pump gas alot, you wont be anywhere near their max values. And even on E85, 30-35 psi on the streets is a lot and borderline reckless <ironic and sarcastic>

You only want to do this once, so I'd at least send an email or pick up the phone to each of those companies listed.

 

From my experience with OSG and Tilton.... Tilton was much easier to drive. I test drove a Z with the Tilton because I wanted to remove the OSG and replace it with something else. Even considered the Carbonetics again because I was not planning to turn boost up to the limit of the Carbonetics.

If I remember correctly the Tilton was very expensive.

 

I have the GTM spec Exedy twin - got it brand new from GTM for $1200 a couple months back.

It is amazing. Easier to drive than my Clutchmasters FX300 was. Pedal is definitely heavier than stock, but once it was broken in the engagement was very smooth. Almost zero low-rpm transmission rattle as well, which surprised me given the horrid noises my car made when I had an ACT street lite flywheel! I also have the RJM bracket, which surely helps.

Bottom line, I am very picky about the way my car runs and drives, and the Exedy is the best aftermarket clutch I have ever owned or driven, in any car.

 

THanks for the feedback gentlemen. Will the Exedy twin hold 700 wtrq?

 

Looks like GTM still has the Exedy carbon twin on sale for $1,200. That's a steal folks!

I think 700 ft lbs would be right on the limit of the twin. Exedy rates the GTM spec twin at 747 wtq for road racing and 603 wtq for drag racing (they bump those rating to 830 and 670 at the crank). The coefficient of friction of the carbon goes up from .31 to .48 when it gets hot, which might be part of the reason why the "road race" rating is higher - keeping the temperature of the disks up by constantly shifting would make it hold more power. If you try to launch on a cold clutch with 700 wtq, it will surely slip.

http://www.exedyusa.com/multimedia/s...rbonSeries.pdf

GTM also offers an Exedy triple, albeit at more than twice the cost of the "on sale" twin. Interestingly, they don't list the torque capacity of the triple (the description is copied and pasted from the twin). It's expensive, but if it drives like the twin does and holds more torque than the twin then it would be my vote.

 

Remember that on the street you won't abuse the clutch as much as a drag strip since the tires aren't going to bite near as hard.

This isn't my personal experience but I figured it would be good to mention. When I had my os giken twin disk and Hal was tuning my car he told me it was one of the hardest clutches to get the car on the dyno (while he was using my car). He told me the cars with tilton clutches are much more smooth and easier to drive.

So you might want to ask hal's opinion on the engagement of the tilton because it sounded to me like he preferred them for their driveability while they still hold power.

 

Tilton I think may be around $6k. And there are none to be had.

 

Abushong (sp?) has an Exedy triple carbon from GTM and it started slipping on the dyno at 751 wtq. So the triple might be just right for you, as long as you don't plan to exceed 700 wtq. Twin would most likely not work, which is a shame because they are such a good deal right now. Maybe ask Abushong how the triple drives? His car is for sale.