Anyone have a Kevlar clutch disc?, If so, what's your experience...good/bad??? Options

[wbergtho]

I have a V-8 car with 500 HP and the stock 930 OEM Sachs disc is starting to slip. I have the KEP Stage 1 930 pressure plate and was told that it would hold 550lbs of torque (with a stock disc). My engine puts out 470 ft. lbs of torque...so this set up should work according to KEP. However, it has only 9-10K miles on the stock disc and it's starting to go already. (Maybe that's about right...considering the amount of performance I have and my driving style?)

I am considering going to Clutchnet's Kevlar disc. Renegade swears by this type of disc for their high HP V-8 applications. I remember Scott telling me about how wonderful and streetable they are. Nice smooth OEM engagement and much higher torque holding capabilities...and long lasting durability to boot. He said that the Kevlar discs need to be broken in gently for approximately 500 miles.

Anyone out there have a Kevlar disc in their car?...If so, how has it worked for you???

Thanks for the feedback!

Bill

[PRS914-6]

Two things make for a smooth engagement.....The "wafer" built inbetween the disks friction surfaces (the reason you can squeeze a disk with your fingers) and the spring centers.

Personally I would NOT use a puck style disk . They are usually designed for racing and more "on or off" situations.

Here is what I did for my 3.6. I had Kennedy build me a stock looking 911 disk but actually a race disk. It has more METAL in the friction material and has a higher coefficient of friction. The advantage of that is you can use a stock pressure plate (911) and get 15-20% more holding power without going to a puck style. Think about when your brakes are worn to the metal and they grab more. Also, my first gear is way taller than stock and this will minimize glazing.

The disk is also only "wafered" on the pressure plate side. The advantage of that is the disk does not have to slide on the input spline every time the clutch is used. Basically it releases quicker but still allows smooth engagement with one sided wafered.

Talk to Kennedy some more and I'm sure they can give you some creative solutions. I was not williing to have a stiff clutch pedal for the street and I made that very clear to them. Basicallly I wanted my cake and eat it too. Hopefully I got it....