Clutch suggestions?
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 6,149
Likes: 11
From: Greater Detroit Metro MI, when I'm not travelling.
Clutch suggestions?
I'm still running the stock clutch on my C6 Z51, and, despite making 600RWHP/518RWTQ and having 39000 miles on the clock (only 3-4K of those supercharged though), it hasn't slipped yet. I really like the pedal pressure and engagement; I've been through PLENTY (7 or 8) of heavy duty clutches on previous cars and since this is my daily driver I am not willing to deal with anything that is going to grab and shudder with zero slip, or require 100lbs of pedal pressure to actuate... What would you suggest? Since I don't want to spend a fortune I've been thinking of just getting a Z06 Clutch and a lightweight flywheel and replacing it if it wears out, but I am worried that it just won't last in this application... Is there something better that doesn't cost 10x as much?
Oh, and no SPEC clutches. I've had 3; all were comple junk and I refused to install the last one because the brand new clutch pressure plate came completely warped (dish shaped) from the factory. I am never dealing with that company again.
Oh, and no SPEC clutches. I've had 3; all were comple junk and I refused to install the last one because the brand new clutch pressure plate came completely warped (dish shaped) from the factory. I am never dealing with that company again.
Pro
Joined: Aug 2007
Posts: 696
Likes: 133
From: Central Jersey
Hey, I have the LS7 clutch in my car. My car has about 45xxx miles on it. It is just marginally heavier than the LS2. The difference is so slight, that you probably won't even notice it after driving it the second day. I'm not sure how much power it can hold up to. But I asked this question in the FI forums, I'm sure you've been there already. From my viewpoint, if you do not beat the car too hard on the dragstrip and you slip the clutch out as you launch, you should be fine with the LS7 clutch. Additionally, I wouldn't visit the strip that often neither. With that said, from what I hear, the LS7 should hold up pretty well for DD and street applications.
Hope this helps
Hope this helps
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 6,149
Likes: 11
From: Greater Detroit Metro MI, when I'm not travelling.
Safety Car
Joined: Dec 2005
Posts: 4,157
Likes: 37
From: North Carolina
St. Jude Donor '07-'08-'09-'11-'12
Sam, I spent 4 hours at SEMA, looking, talking researching and have decided on the Zoom Dual Disc. Have a look, it looks awesome spec and build wise, and then Joe_G was kind enough to pit me on the phone with GTODoug who has had it for a while. He had nothing but great things to say about it and the customer service. He said he's tried them all, and the Zoom was the best. When I put it in, you are welcome to try it out first hand.
ZOOM® Performance Products is taking twin-disc technology to the street with their all new D2™ Series Twin-Disc, an affordable light-weight clutch with the holding power of a racing twin, the smooth engagement of a diaphragm style single disc and superior durability by applying cryogenic technology.
Most twin-disc clutches engage both discs at the same time, transmitting harsh shock loads into the driveline and producing an abrupt "on-off switch" effect that is hard to control on the street. ZOOM’s® groundbreaking D2™Twin Disc features their patent pending Progressive Uptake™ design, allowing the discs to engage one at a time for super-smooth operation and the ability to take up to 925lb-ft of torque.
The floater plate features heavy-duty straps for noise free operation and is cryogenically treated along with the nodular iron pressure plate. By applying a cryogenic treatment to the metal friction surfaces, ZOOM® is able to strengthen the molecular structure of the metal to increase durability, prevent heat warpage and stabilize the cover, diaphragm and friction ring.
Matched low inertia discs and your choice of a billet steel or lightweight aluminum flywheel complete this technologically advanced ZOOM® clutch system.
Each D2™ Twin-Disc system comes fully assembled with high tensile strength fasteners. The stack height is designed into the unit for use with stock release bearing set ups and eliminates the need for shims, making installation a snap.
ZOOM® Performance Products is taking twin-disc technology to the street with their all new D2™ Series Twin-Disc, an affordable light-weight clutch with the holding power of a racing twin, the smooth engagement of a diaphragm style single disc and superior durability by applying cryogenic technology.
Most twin-disc clutches engage both discs at the same time, transmitting harsh shock loads into the driveline and producing an abrupt "on-off switch" effect that is hard to control on the street. ZOOM’s® groundbreaking D2™Twin Disc features their patent pending Progressive Uptake™ design, allowing the discs to engage one at a time for super-smooth operation and the ability to take up to 925lb-ft of torque.
The floater plate features heavy-duty straps for noise free operation and is cryogenically treated along with the nodular iron pressure plate. By applying a cryogenic treatment to the metal friction surfaces, ZOOM® is able to strengthen the molecular structure of the metal to increase durability, prevent heat warpage and stabilize the cover, diaphragm and friction ring.
Matched low inertia discs and your choice of a billet steel or lightweight aluminum flywheel complete this technologically advanced ZOOM® clutch system.
Each D2™ Twin-Disc system comes fully assembled with high tensile strength fasteners. The stack height is designed into the unit for use with stock release bearing set ups and eliminates the need for shims, making installation a snap.
Last edited by Craigster05; Nov 11, 2008 at 10:22 AM.
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Melting Slicks
Joined: Sep 2007
Posts: 2,597
Likes: 3
From: READING PA
St. Jude Donor '08-'09-'10
Sam, I spent 4 hours at SEMA, looking, talking researching and have decided on the Zoom Dual Disc. Have a look, it looks awesome spec and build wise, and then Joe_G was kind enough to pit me on the phone with GTODoug who has had it for a while. He had nothing but great things to say about it and the customer service. He said he's tried them all, and the Zoom was the best. When I put it in, you are welcome to try it out first hand.
Zoom D2 Series clutch sets are engineered for high-horsepower street/strip applications at an affordable price. These Zoom D2 Series twin disc clutch kits are a revolutionary new twin-clutch design offering high torque holding capacities well over 800 lbs./ft., while maintaining a near stock pedal feel. Zoom uses the latest technology in CNC manufacturing and provides premium friction surfaces. Completing the package, Zoom includes a premium CNC-machined flywheel in every D2 Series clutch set.
1.125 inch, 26 Spline, 8.875 inch Cerimetalic
Includes: Alignment Tool, Pilot Bushing, Flywheel, 225mm Clutch, Pressure Plate.
920 ft./lb. holding capacity. Designed to use a stock type throwout bearing, not included
Zoom D2 Series clutch sets are engineered for high-horsepower street/strip applications at an affordable price. These Zoom D2 Series twin disc clutch kits are a revolutionary new twin-clutch design offering high torque holding capacities well over 800 lbs./ft., while maintaining a near stock pedal feel. Zoom uses the latest technology in CNC manufacturing and provides premium friction surfaces. Completing the package, Zoom includes a premium CNC-machined flywheel in every D2 Series clutch set.
1.125 inch, 26 Spline, 8.875 inch Cerimetalic
Includes: Alignment Tool, Pilot Bushing, Flywheel, 225mm Clutch, Pressure Plate.
920 ft./lb. holding capacity. Designed to use a stock type throwout bearing, not included
I know you were considering the fidanza. Leon
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
I am looking at the 900 Ft # Zoom D2 which appears to be the same as the Fidanza 7.6. I've also been looking at the SPEC Twin in the SS Trim (organic disks) which also holds 900 ft #'s.
Last edited by 5 Liter Eater; Nov 11, 2008 at 09:52 AM.
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 6,149
Likes: 11
From: Greater Detroit Metro MI, when I'm not travelling.
I keep reading that the textralia rattles...
Would I be wasting my time/money by putting a C6 Z06 clutch in there, or will it hold for a good wile?
Would I be wasting my time/money by putting a C6 Z06 clutch in there, or will it hold for a good wile?
Pro
Joined: Jul 2007
Posts: 740
Likes: 0
From: Lynchburg VA
I drag race alot with my car on ET streets, 4000rpm launches, and with 410 rwhp using the stock LS7 clutch and it's held up great we have it out right now because of a bell housing failure and it looks great i'm debating on keeping it. I'd say go for it if you dont do alot of drag racing on sticky tires...if you do then you probably need something better at that level.
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
The Textralia twin rattles because the floater plate is not strapped. I have seen a recent thread about a rattling OZ700 but I would not say it's typical.
At your power level you're past what the LS7 clutch is rated at. Plus they are made by LUK, the same company that makes all the other LSx clutches. I'm convinced that something in their "self adjusting pressure plate" contributes to the "pedal to the floor" problem. A clutch swap is no small job. Get more clutch than something that may "hold for a good while". Not so much that it's hard to push in or chatters but at least one rated for your crank TQ numbers.
At your power level you're past what the LS7 clutch is rated at. Plus they are made by LUK, the same company that makes all the other LSx clutches. I'm convinced that something in their "self adjusting pressure plate" contributes to the "pedal to the floor" problem. A clutch swap is no small job. Get more clutch than something that may "hold for a good while". Not so much that it's hard to push in or chatters but at least one rated for your crank TQ numbers.
Last edited by 5 Liter Eater; Nov 11, 2008 at 03:12 PM.
Melting Slicks
Joined: Jul 2008
Posts: 3,047
Likes: 4
The RPS is quiet, super smooth and will hold the power. You get what you pay for, and you will be happy.
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
Tech Contributor
Joined: Jul 2002
Posts: 14,949
Likes: 263
From: St. Louis, MO
St. Jude Donor '08
My shop Horsepower Sales Florida has had great luck with the new Zoom dual disk, super light and holding 600+ hp from nitrous guys.
GTODoug has one and loves it, he's one of the 600 hp guys and he's been through many clutches (including the one above which didn't handle dyno sessions).
Melting Slicks
Joined: Jul 2008
Posts: 3,047
Likes: 4
My buddy who drag races a lot hasn't had great luck with that one, it gets mushy like the stock clutch.
My shop Horsepower Sales Florida has had great luck with the new Zoom dual disk, super light and holding 600+ hp from nitrous guys.
GTODoug has one and loves it, he's one of the 600 hp guys and he's been through many clutches (including the one above which didn't handle dyno sessions).
My shop Horsepower Sales Florida has had great luck with the new Zoom dual disk, super light and holding 600+ hp from nitrous guys.
GTODoug has one and loves it, he's one of the 600 hp guys and he's been through many clutches (including the one above which didn't handle dyno sessions).
Tech Contributor
Joined: Mar 2003
Posts: 12,093
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
I think the LS7 is a great clutch and had it in for about 6k miles all hard with nitrous and sticky tires for the last 3k. Nitrous @600rwtq is a lot harder on a clutch than FI at 600/500 so I dont think the situation you are in with street tires will not be any issue for the LS7 clutch. The pedal feel is stock.