FYI for a centerforce DF 12" clutch.
Today I went out to my favorite test area, heated up the slicks and did a test launch. It slipped in first through second.
The engine is 650+ HP with torque somewhere in the same range. I'm being conservative as I have not had the car on the dyno yet with the new top end. The old top end made 529 RWHP which equates to 625 ish HP at the crank. This new set up pulls much harder and MPH is up 4-5MPH in the 1/4" even while smoking the clutch through 1st and 2nd and not getting into 4th until the 1000" + mark. With the old set up I was in 4th by the 800" mark.
The clutch has maybe 1000 miles with a hydraulic throw out bearing clearance of .100",was installed on a fresh cut flywheel and was broken in gently over a couple hundred mile. I looked for a possible oil leak getting in the BH but that was not happening either.
I had a pic from the drag stip 2 weeks ago which showed the clutch smoking bad at launch. Before posting I wanted to make sure everything was set correctly and verify what I saw in the pic. I would have posted the pic but I had posted it in another thread and evidently you can't post it twice.
I'm not here bashing CF as they say not to drag race with this clutch. I'm here just posting some info for anyone who is thinking of purchasing this clutch and you have similar power. I
When I was not drag racing the clutch held just fine with street tires and I really liked it as a street car only set-up.
I just ordered the Mcleod RXT Twin Disc after much researching.