Non organic 4/6 puck disk (please post info!!!)

[Cesar]

I was wondering whether anyone has any info from experience with non organic, 4 or 6 puck clutch disks...sprung or non sprung.

-wear, engagement, shifting....

Thank you very much for your time and patience.

 

[!^3]

IMHO, 4 pucks and 6 pucks are completely unecessary.

A 2900 or 3200 even would be more than enough. A 4/6 puck will only blow your tranny that much faster. Engagement is hard, more like a button than variable like a normal clutch.

A 4 puck/6 puck would definitely last longer than an organic disc in a 2900/3200, but your tranny won't...last time I checked, clutches were MUCH less expensive than tranny's.

 

[Cesar]

I realize that non organic disks would be harder or the driveline increasing driveline shock, but there is no need for high clamp loads on these disks since they have a higher co-effiecient of friction.
A 2100 pressure plate with a non organic disk can hold more torque than any 2600 plate with a organic disk. look it up. (besides, the synchros don't work as hard and shifting is a lot faster due to lower inertia, some are sprung and reduce shock)

Thanks for posting.

 

[!^3]

No problem.

I should also add that although they do allow you to shift faster, shifting faster can also be detrimental to your tranny's health. The harder you are on moving parts, the sooner they will wear out. Of course, we could just buy an auto Mercedes and never worry about breaking things, but there is a balance that you want when shifting. I don't think my 2600 slows my shifting down and my new 2900 shouldn't either.

A friend of mine and I put a 4-puck clutch on my stock tranny before I bought my Shep racing tranny. It took three days to blow; it was basically an on/off button with no middle ground-the thing would throw you in and out of your seat HARD. Sure it held power well, but, I'll take a little longer to shift and deal with the stiffer pedal if it means my tranny lasts longer.

Plus John Shepherd himself runs a 3200 pressure plate with an organic street disc. He only rebuilds his tranny twice per race season. That's good enough for me.

 

[Cesar]

Well the pressure plate isn't what slows down shifting, it's the disk's mass. a full face disk takes longer to speed up and slow down. (synchronizers)

If I had a pedal assembly that could withstand a 3200 pressure plate I would sure go for it.
Can you tell me what plate your running with your organic disk? How does it engage/disengage? did you have problems adjusting the clutch? Stock clutch fork? How is your pedal assembly holding up?
Thanks

 

[!^3]

Right now I am using the ACT 2600 pressure plate, but I am building up my engine, installing an AEM EMS, and a GT35R turbo this week so I have an ACT 2900 pressure plate waiting to be installed. I have a new clutch fork...as soon as the Shep tranny was installed with the 2600, the stock fork broke. If you are not careful, the 2600's stiffness will come back and bite you when you shift and cause you to grind/mis-shift, but it is easy to get used to. I don't think I ever had a problem with driving the 2600; I actually prefer a stiffer clutch now, as most other clutches feel like rubber to me

The pedal assembly is holding up very well. I adjusted the pedal once...it had a lot of play when pressing the pedal down before the assembly would actually disengage the clutch. So instead of say 6" of travel, I have about 4" of travel in the pedal. Makes for a very nice feel and the stiffness is easily managed.

How much power are you thinking of making? How much street driving do you intend on doing?

 

[Cesar]

I intend on taking the vehicle on the track on weekends, but not driving too much during the week since i live downtown toronto, where I can get around easily via public transit.

I will have the bs removed, evo3, 2g pistons, 94 octane, raise the boost until the knock threshold. (maybe mild nos for cheap horses). It's a steady progression.

I'm not sure how much power I'll be running....
I don't intend on launching the car really.., why do I lie to myself???

 

[!^3]

, yes, those accidental launches are hard to get around, .

My 2600 is on its 40th+ launch. I launch at 7-7.5k rpm and it still doesn't break a sweat. These things are amazing. The 2900 should help though since I'll be pretty much doubling my crank hp in two weeks. These clutches are great as long as there is a reasonably reliable transmission to back it up.

Best of luck!