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over 500rwhp? - will ACT Heavy Duty Pressure Plate hold up?

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Old 07-23-15, 11:22 PM
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DragonFly

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over 500rwhp? - will ACT Heavy Duty Pressure Plate hold up?

20B 500rwhp - will ACT Heavy Duty Pressure Plate hold up? Or do I need to get the Xtreme

**NOTE**: this is NOT a drag car or car that will be 'launched', its my road race car.

The disk is not an issue as I use a racing ACT 6 puck solid disk, and it is very aggressive but perfect for road racing. The problem is the pressure plate, I need something that can hold 500rwhp without slipping.

I have searched and read threads touching on this, some say the Xtreme is to 'heavy', making the clutch pedal to hard to push and in some cases breaking clutch pistons and the bearing fork, et. Some said the Heavy Duty has better pedal feel and can hold 500rwhp just fine with the exception of hard launches.

I would get the Heavy Duty if I knew for certain it will not slip at 500rwhp during 'normal' acceleration up the gears, that is to say, not dead stop launching. Anyone have direct proof of this, something like 'ya I have a Heavy Duty and make 500+ and it did not slip on the dyno runs' or something similar.

On the other hand, I can be convinced to get the Xtreme if the cases I mentioned above are not typical, although if the pedal is REALLY stiff, it could be an issue of leg fatigue during a race LOL
Old 07-24-15, 01:29 AM
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Originally Posted by damian
20B 500rwhp - will ACT Heavy Duty Pressure Plate hold up? Or do I need to get the Xtreme

**NOTE**: this is NOT a drag car or car that will be 'launched', its my road race car.

The disk is not an issue as I use a racing ACT 6 puck solid disk, and it is very aggressive but perfect for road racing. The problem is the pressure plate, I need something that can hold 500rwhp without slipping.

I have searched and read threads touching on this, some say the Xtreme is to 'heavy', making the clutch pedal to hard to push and in some cases breaking clutch pistons and the bearing fork, et. Some said the Heavy Duty has better pedal feel and can hold 500rwhp just fine with the exception of hard launches.

I would get the Heavy Duty if I knew for certain it will not slip at 500rwhp during 'normal' acceleration up the gears, that is to say, not dead stop launching. Anyone have direct proof of this, something like 'ya I have a Heavy Duty and make 500+ and it did not slip on the dyno runs' or something similar.

On the other hand, I can be convinced to get the Xtreme if the cases I mentioned above are not typical, although if the pedal is REALLY stiff, it could be an issue of leg fatigue during a race LOL
At 500WHP your torque should be well below what this clutch can handle. That being said this clutch is rough on the trans. A nice sprung dual clutch would be the way to go for holding the torque and being a little easier on your trans. May cost more up front but will probably save you money in the long run and it will be easy drive.
Old 07-24-15, 12:25 PM
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i got a heavy duty with a 6 puck sprung and hold launching at 7500rpm and 18psi on boost
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