Just got my car back from Z1 after they installed their new clutch and ultra light weight flywheel package. The car drives great, the pedal feel is the same, if not lighter then the stock clutch. The stock flywheel is around 33 lbs, the ultra light weight is around 13 lbs.

The car showed a gain of 23 hp and 20 ft/lbs of torque at the wheels. I can smoke the tires in 2nd gear now and chirp them in 3rd. Throttle response feels alot quicker and the engaugment feels like its straight out of a race car.

I got the first one that they have recieved but they say that they will have more available in about 30 days. They said that they will have some info on the website in the next couple of days or you can call John at Z1 Motorsports.

Russell has said that the package will run around $750. I will be posting dyno charts in the next couple of days, but this is a great improvement and I strongly urge everyone to check this out.
Brian

 

I didn't think the stock flywheel weighed that much... I always thought 23-24 lbs.??

brooke

 

That's nice. Good weight shaving and performance. I wonder if clutch feels similar to JWT?

 

Any chatter?

 

The 350z flywheel my be lighter, I have a G35
Brian

 

None that I have heard and I have put at least 250 miles on it myself and I know the guys at Z1 test drove it a good bit too.
Brian

 

Thats a big gain.. NExt mod for me maybe?

 

I'm not too far.. what'd they charge for the install?

 

$400 on install, but they won't have any more in for about three weeks. Call and talk to John he will get you set up with the next one. It is surely worth it, I was starting to get borred with my car and this has re-lit my fire.
Brian

 

23 hp gain? That's a lot. I thought lighter flywheel and cluth do not add power, only frees them back up. People with the jwt combo only shows around 10hp ''gain.'' So to say a 20hp gain the z1 flywheel and clutch is twice as light as the jwt? I'm planning on ordering the act combo from z1, probably the lightest combo you can get with streetablity. Adam at z1 never mentioned about their own clutch and flywheel.

If you can, you give us spec such as weight, how many piece, power it can handle, etc

 

JWT is 14 pounds. I have one. The stock one is 32 pounds. I highly doubt you got 20+hp though. I can chirp my tires in 3rd with it .

 

do you have before/after dynos?

 

We did before and after dynos but the dyno tech was not there when I picked up the car on sat. I emailed him today, so hopefully he will send them to me soon and I will pass them on.
Brian

 

It frees up power, yes. So if its freeing it up isnt it adding what the stock one was holding back? +1 on dyno plots Ive always felt like clutch and flywheel was a mod that would show most benefit over normal boltons ie pop-charger, TP's etc..

 

Yeah, I'm doing the same package, but not until after the Z Nationals. Z1 has my 94 TT right now doing a turbo upgrade w/test pipes and chrome engine build up. It should be ready b4 Z Nationals on the 23rd, so the 350z will be driven there for the combo then (going FI)

 

I just read you said at the wheels. Thats like 46 horsepower at the crank. My guess is the dyno is fudged and this is just retarded now. It is impossible.

 

sounds unreasonable. I'd expect 15-20 with the full package. Actually smoene recently did a dyno and it came out to be 15whp, which isnt bad. Better hp/dollar than some exhausts lol.

 

Any more info on the clutch/flywheel setup? Any pics? Availability?

 

Where in the world did you get the math from? Your basically saying there is a 50% drivetrain loss...when in actuality its probably less than 20%

23whp X 1.20 (or 120%) = 27.6 crank hp

 

I call BS. I installed a clutchmasters stage1 clutch, JWT flywheel, stillen airbox, and crawford cats(already had mrev+ and stillen exhaust) on my 05 6MT sedan, and all I got was 5hp/3tq at peak.

Same dyno, SAE. Correction factor of 1.04 for the blue line(>100 degrees), correction factory of 1.00 for the red line(~70 degrees).