New clutch/flywheel installed

[joe603]

Well I got the car back today. The competition clutch plus the lightweight flywheel totally transform the car. The clutch engagement is very quick and solid. I went with the stage 4 so I wouldn't have to worry about the clutch when I add the supercharger.

http://www.forgedperformance.c...age=1

The chatter is definitely louder...but forged performance said that it's quieter than the JWT combo. The lighter flywheel makes it more difficult to drive slow...she wants to be rev'd! The car feels much faster. I haven't tested the high rpm take-off yet...I need to put some miles on it first. I'm confident that the stuck clutch pedal problem is gone.

I'll post an update as the clutch breaks in. The old clutch/flywheel wasn't too worn out...a few hotspots on the flywheel.

[eZg001]

I looked at Competition Clutch's website and it gives a range of flywheel weights dependant on application. I couldn't find the exact weight of the one for the G35. Do you know?

I'm still trying to decipher info from your last thread concerning this. Exedy has a chromoly which one tech liked, I think it is app 19 lbs. Yours is steel, I think. The lightest weight are aluminium around 14 lbs.

obviously lightest is best for acceleration but trying to weight that with longevity. Not sure how thermal expansion plays a role.......

Modified by eZg001 at 6:42 PM 12/10/2008
Modified by eZg001 at 6:43 PM 12/10/2008

[joe603]

I'm not sure on the weight...but it is significantly lighter than stock. The dealership gave me the OEM clutch/flywheel and those two boxes are much heaver than the aftermarket parts. The literature said that it's a forged steel lightweight flywheel...I couldn't imagine something lighter, it would be hard to manage at stoplights!

[G_whizz]

Woohoo! Sweet Joe!

You have to do that clutch test to see if it sticks!!

Also, did you really get the ok from the wifey to get a supercharger???

[Jacko3]

Joe:

Congrats. I am glad you love the flywheel.

[awdjdmtalon]

Very nice. I used the CC stage 4 clutch in my 450 AWHP Talon. It survived over 100 launches at 5500 rpm, on both the track and street, w/o a single issue. It was backed by the Fidanza 8# flywheel. It was very streetable. Hell even my wife could drive it. Eventhough the effort to push the clutch in would almost stand her up in the car.

[eZg001]

I'm not sure on the weight...but it is significantly lighter than stock. The dealership gave me the OEM clutch/flywheel and those two boxes are much heaver than the aftermarket parts. The literature said that it's a forged steel lightweight flywheel...I couldn't imagine something lighter, it would be hard to manage at stoplights!

I am still trying to figure out some info from your previous thread on this subject. fbpem1 specifically mentioned his preference for chromoly, mentioned that aluminium would be lighter weight and cheaper but did not even mention forged steel. I promise that I am not trying to give you a complex or anything

Can anyone elaborate on the pros and cons of the different materials flywheels are made of?

Thanks guys

[joe603]

I would think that forged steel wouldn't have warping issues like aluminum would...

[eZg001]

I would think that forged steel wouldn't have warping issues like aluminum would...

Yea right ....you don't even know your own flywheel's weight

totally joking

I am excited to go to an aftermarket flywheel since having such good results with a Unorthodox lightweight pulley!!!

Man am I loving this car!

[tollboothwilley]

steel is much stronger than aluminum, obviously. Forging takes a lot of work and generally is much more expensive. If forged properly, just like a good set of rims, you can get the steel much lighter and even stronger than the aluminum.

Now, thats not saying that this is lighter than all the aluminum ones, but I'd say that its significantly stronger and will handle stress much better.

[Sentientbydesign]

Most of the Aluminum ones have replaceable friction surfaces. I assume the friction surfaces are steel.

The lightest G flywheel I've seen is 13lbs. I think Fidanza's is at 18.

[joe603]

What is the OEM flywheel weight?

[Sentientbydesign]

What is the OEM flywheel weight?

Dammit! You would ask me that question! Hold on. I'll go check. My memory says 25lbs, but that's probably off. I've seen quite a few places state that the clutch/flywheel combo were 32. brb.

[Sentientbydesign]

I'm going to stick with the 25lbs. I've read 25lbs somewhere else and then I just read a build article for a project 350z that stated 25.5.

Steve will probably come over here and yell at me for quoting other internet sources, but that's all that I have available at the moment.

[joe603]

25-30 sounds about right....feels just as heavy as a 25lb barbell.

[Jennifer@CCI]

I looked at Competition Clutch's website and it gives a range of flywheel weights dependant on application. I couldn't find the exact weight of the one for the G35. Do you know?

I'm still trying to decipher info from your last thread concerning this. Exedy has a chromoly which one tech liked, I think it is app 19 lbs. Yours is steel, I think. The lightest weight are aluminium around 14 lbs.

obviously lightest is best for acceleration but trying to weight that with longevity. Not sure how thermal expansion plays a role.......

Modified by eZg001 at 6:42 PM 12/10/2008

Modified by eZg001 at 6:43 PM 12/10/2008

Sorry for jumping in late on this, but just ran across the thread...the weight on the competition clutch flywheel is 14.11 lbs
Modified by Jennifer@CCI at 9:00 AM 12/15/2008

[eZg001]

Thanks for the info Jennifer!!!!

[eZg001]

So what is the scoop on Chromoly? And any quesses why the tech , not Steve, perferred chromoly for flywheels?

Just found this:

JUN Auto lightweight flywheels are one piece and made of Chromoly. These JUN AUTO Chromoly lightweight flywheels are 200% stronger than stock steel flywheels. The JUN Racing lightweight flywheels allow the engine to rev up faster, allowing you to power thru your power band quicker. JUN Auto lightweight flywheels will balance better than two piece aluminum flywheels and will not separate like two piece flywheels. JUN RACING engineers each application for the optimal weight to maintain torque, top end and balance of the motor.

The one for our G's is 14.3 lbs and $475

the Exedy is 20 lbs and closer to $600

How many lbs was the stock flywheel?

[Sentientbydesign]

So what is the scoop on Chromoly? And any quesses why the tech , not Steve, perferred chromoly for flywheels?

Just found this:

JUN Auto lightweight flywheels are one piece and made of Chromoly. These JUN AUTO Chromoly lightweight flywheels are 200% stronger than stock steel flywheels. The JUN Racing lightweight flywheels allow the engine to rev up faster, allowing you to power thru your power band quicker. JUN Auto lightweight flywheels will balance better than two piece aluminum flywheels and will not separate like two piece flywheels. JUN RACING engineers each application for the optimal weight to maintain torque, top end and balance of the motor.

The one for our G's is 14.3 lbs and $475

the Exedy is 20 lbs and closer to $600

How many lbs was the stock flywheel?

Interesting information. The stock flywheel is around 25 based on my limited research. IIRC, the stock flywheel/clutch combo is 32lbs.

I can't wait to get my G back tonight- I'm praying that I do. I have to admit that Californians CANNOT drive in rainy weather. Most of us are half decent in dry weather, but the water comes and all of a sudden nobody knows how to adjust. Anyways, it started pouring last night and the traffic maps look like Christmas trees with multiple accidents and slowdowns everywhere.

http://www.sigalert.com

[eZg001]

From Forged Performance's website:

JWT Flywheel 350Z / G35 / G37 w/HR engines (2 throttles) #16512 This low inertia flywheel weighs in at only 15.4lbs. Cutting the weight of the stock dual mass unit by 45% allows the VQ engine to instantly respond to its true potential. Deceleration is also improved allowing the engine to quickly slow the car with less load on the brakes. using my wicked mathmatical skills I get 15.4/.45= 34.22 lbs

[Sentientbydesign]

From Forged Performance's website:

JWT Flywheel 350Z / G35 / G37 w/HR engines (2 throttles) #16512 This low inertia flywheel weighs in at only 15.4lbs. Cutting the weight of the stock dual mass unit by 45% allows the VQ engine to instantly respond to its true potential. Deceleration is also improved allowing the engine to quickly slow the car with less load on the brakes. using my wicked mathmatical skills I get 15.4/.45= 34.22 lbs

I found that one already and I didn't use it because it specified HR engine. I assume that one is heavier.

If anybody wants a JWT flywheel for cheap, email me. I'll be starting a thread shortly.