trackboss

So who's going to be the first to try this? Over the last few years I've read good and bad experiences for just about every full size street clutch available for the c5/c6 with no consensus as to which one is ideal. This one seems to be well done and not undersize, which can be a pain in the *** for a street car. Looks similar to a proper race clutch, but larger diameter. Well designed with weight reduction and strength in mind.
http://www.cpgnation.com/forum/quart...-4-a-7508.html

TriplBlk

I couldn't find the weight? Dang

SouthernSon

I don't see anything about street friendly. In order to be a DD it needs to have some weight but it appears this one only offers more power handling ability considering the starter ring gear is mounted with a skeleton arrangement and not a flywheel.

Although the clutch engagement may be less heavy and somewhat smoother, the real problem lies in no mass for engine smoothness when applying a load. This is especially difficult with almost all aftermarket camshafts.

beerkat

I have the 7 1/4" Quartermaster 3 disc Pro V in my street legal C5Z. With a little practice it is not too bad to drive around town.

RX-Ben

I think the best street/track compromise clutch is the RPS Twin Carbon Billet (~25lbs incl flywheel). It can be slipped and is still light. I have one for sale b/c I swapped to a 7.25" which is a bit trickier with a tire trailer in tow.

froggy47

I thought the answer was the c6 z06 clutch. Done & done. It's what I will use in my c5z when time comes.

RX-Ben

Those weigh a ton.

TriplBlk

Realllll heavy. I believe my setup weighs 38 lbs. C6Z entire setup is 60-70lbs?

froggy47

I figured as much, but it's really a have a cake or eat it. One or the other smooth & last long vs. touchy & light wgt. & short lived.

Be nice if one pkg could do it all.

jasonberkeley

What about the Pfadt Quarter Master?

http://www.pfadtracing.com/catalog/p...roducts_id/240

RX-Ben

The RPS is cheaper, has better (heat resistant) friction material and will slip whenever you ask it to.

redtopz

C5Z clutch with an aluminum flywheel? I used to run an RPS twin clutch in my gto and it was a great clutch.

69427

Not a C6 expert here. Why is the setup so heavy, particularly in a car that has so many expensive things to reduce weight?

trackboss

Most (probably all) factory clutch setups are really heavy. Probably mostly because of cost. The covers are all formed steel and need to be rigid to allow the spring to compress and free up the clutch disk. Using thicker steel is less expensive than doing the engineering to optimize the shape and lessen weight/material. The friction surface is typically a very thick cast iron piece. Flywheel is the same.

RDnomorecobra

I have an ACT twin disk and I like it on the street and HPDE.

jasonberkeley

My car is a full race-car. No need to slip very much, just wondering if anyone here has any experience with it.

Ben- where in Brooklyn are you?

RX-Ben

I used it for a number of TTs and to/from events.
Zero complaints.

Brooklyn Heights.

Scooter70

Are you mad? You have no idea how much emphasis is put on materials, both cost and weight. I work in Body and we're concerned with tenths of millimeters. CAE is used to determine both geometry and thickness of the parts. It's an iterative process that takes months and months to come to the proper solution.

Heavier clutch components allow for smoother engagement and take-off. It's all about customer wants/demands in their perception of clutch feel. If you think they're just throwing cost and weight at every single vehicle off the line just because the engineers don't want to take the time to do their jobs, you're nuts.

redtopz

If everyday drivers can't easily drive the car, they won't buy it. A heavy flywheel and clutch provides enough inertia to get the car rolling easily. Performance is sacrificed for ease of use, not cost. Can you imagine the complaints from the car mags and owners if they put a light weight racing clutch in a new corvette? All you would see around town are a bunch of corvettes bucking and stalling at stop lights .

Pfadt Racing

For dedicated race cars we really love this Quartermaster clutch... however it's far from what we would consider street friendly. It will certainly get you around town if you need to, and up on the trailer when you're loading and unloading. That being said we definitely wouldn't recommend it for anyone looking to daily drive their car since it's got a really aggressive on-off engagement.

If you're looking for street/track clutch packages that still shed some weight you might want to take a look at the Mantic clutches that East Coast Super Charging has available. We haven't run any of the Mantic clutches in our own personal cars at this point, but after hearing about the success that ECS has had with them anyone looking for a nice dual use street/track clutch should definitely keep Mantic in mind.