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Review 3 of 7
Price Paid:
$280.00
from Fly-n-hi 4wd shop Year / Model Reviewed: centerforce dual friction Strengths: Umm, hi tech? with the little kevlar and copper-wire pads on the flywheel side? Weaknesses: What happened to the clamping force? I can push the clutch pedal to the floor with my hand. Try that with the old centerforce II, it won't happen unless you're Arnold Swartzennegger. Summary: I let it break in for 500 miles before I used any boost at all on the engine. It has stock pedal pressure all the way thru the RPM range, so how can it handle more power than stock? It didn't. The clutch will break loose at high rpm in any gear, even on a soft launch.
I'm putting out less than 200hp, running 15.3 sec 1/4 mile times, and the clutch is my limiting factor.
I just pulled the clutch/flywheel and the disk and flywheel are fine. The wear pattern on the disk is smooth and even, with over 90% of the clutch disk in contact with the flywheel and plate. This clutch is broken in. The clutch plate has little spotty burn marks in a ring toward the outside.
My flywheel has a small step in it that adds artificial height to the clutch disk. I am having the flywheel re-machined, and the height of that step will be doubled in hopes to add clamping pressure and make this wimpy thing hold.
I have now sanded the clutch plate with 240 grit to remove all the burn marks. I have sanded the disk to a rough, not shiny surface. I am getting my machine work done tomorrow, so hopefully I will have more clamping force. I will re-install the clutch, re-break it in and see what happens.
I am worried now, because I bought two Dual-friction clutches at the same time.... this one for my street car (180-200hp) and one for my race car (350+hp). If I can't get the street car solid, then what chance is there that the race car will hook up? Similar Products Used: Centerforce II old-school. I bought one 10 years ago. That one had GREAT clamping force I liked it a lot and several other people liked it and BOUGHT them on my reccommendation.
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