180mm clutch disc

[Svang1]

Any suggestions of a 180mm clutch-disc for a 1599 mouse engine with stage1 kennedy pressure plate?
Today it's got a 4-pucked disc, not so good for the gearbox or flywheel over time..

The engine is dynoed to about 154hp and 170Nm, and the gearbox is a newly built kcr (all weddle, no syncro-rings).
The flywheel is cnc machined, so there isn't much left of it.. So I guess much heat would not be the best for the flywheel..
I am going to mainly use the car for some street and circuit-racing..

Already bought a custom 180mm black magic disc from Ron L, but I've heard that the disc produces a lot of heat, not far from the 4 pucked disc..

Haven't found any 180mm discs like Daikin super-disc, wouldn't something like that disc work ok.. ?
Is it ok to machine a 200 daikin disc to 180mm, like Ron did with the black magic disc??

Thanks

[Torben Alstrup]

I would contact CB Performance and ask them to make/order a 180 mm. 4 puck Ezy-lock. Better than the Black magic because it hooks up about as fast but is much lighter, so it doesnt stress the syncro´s so bad.

T

[Svang1]

Cant find Ezy-lock, just kwik-lock and pad-lock at CB's website.

Is the Eazy lock just special order only?

The gearbox is bulit with Weddle "racing-gears", so the syncros isn't an issue..

[Torben Alstrup]

It is special order.
T

[Svang1]

Ok then, I'll order one..

Thanks Torben..

[Type1/DVK]

haha, that's quick! so convinced after those words.. 

[Peter Shattock]

I had more experience than I would have liked in 2010 with 180mm clutch disc's. In terms of the regular organic disc's I found the Semi auto box 180 disc's to be the most durable.

I also decided to make a 180mm black magic disc disc as an option but did not use it as it was not compatible with my aluminum pressure plate. I ended up with a 12 pad disk (6 pads each side) with Kevlar pads on the pressure plate side and ceramic pads on the flywheel side, which I suspect is similar to that which Torben is describing.

To be honest unless your car is very heavy I would be tempted to try the auto stick 180mm disc, as mine was close to being OK with 231nm of torque. The car weighs about 1500lbs.

I would say less is more in this respect, although I did get it wrong and had more frequent service intervals than was ideal in a street car, but I suspect it may work for you.

Its worth shimming the pressure plate too, to check where the sweet spot is in terms of the pressure available.

Good luck!

Peter

[Torben Alstrup]

Peter, very interesting info.
I did´nt realize that the semi auto disc had more grip than the stick shift ones.
The reason I recommened the Ezy lock is that it is somewhat "softer" compared to a regular 4 puck race unit, and also holds about 10% less torque. But with the power he has, it should hold up more than enough.

T

[Svang1]

Hi Peter!
Well, CB haven't answered my request yet..
So where can I check out and maybe buying the Semi auto box, 12 pad disc or the auto stick?

In terms of how heavy the car is, it is stock weight..

[Peter Shattock]

I got the auto stick one from a friend who just happened to have one, and the Kevlar / ceramic disc was from Kennedy. They were very helpful and sent it to me in kit form as I needed to make it up a little thicker than normal to allow me to shim the pressure plate.

Good luck I hope you find a solution that works.

Peter

[dangerous]

Bergs sell a 3-puck version, and Scat a 4-puck in 180mm.
I had my local clutch guy make my 3-puck disc and am very happy with it:
Car is around 1800lbs and runs high tens@122



Synchros:

<a href="http://www.youtube.com/v/q4eA_RdbNWM" target="_blank">http://www.youtube.com/v/q4eA_RdbNWM</a>

<a href="http://www.youtube.com/v/HgpusDRYNhY" target="_blank">http://www.youtube.com/v/HgpusDRYNhY</a>

[Svang1]

Thanks for all replies!

I have now ordered two discs from CB..
And will order a Kep ceramic disc..

Dangerous: I already have a 4 pucked sinter disc..
I'm afraid of ruining the flywheel and gearbox, with hotspots and hard strain to the gearbox (the car is also for street use)..
But the 4 pucked disc gets the car going, no question about that..

[-Alex-]

How about custom copperhead disc?  200mm is normal order, 228mm is custom, maybe they can make 180mm too?


http://www.aircooled.net/new-bin/viewproductdetail.php?keyword2=CFC0001&cartid=1115201141811602