Question for ACT Clutch Owners
sucks
Evolved Member
Joined: Jun 2003
Posts: 697
Likes: 0
From: Nothern CA
500 miles as ACTman suggests and the literature provided instructs. The lock up improved from very good to great. I still don't beat on it much as I don't believe it is a race clutch but rather a significant upgrade over the stocker.
550 is what i did. basically 500. it is a great clutch, i dont see any problems with it but still feel like its basically a step over the stocker, i would be more confident with a twin disc
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From the President/CTO of ACT himself, Dirk Starksen:
"The break in procedure is not as critical as most people make it out to be. If you don’t overheat the clutch and drive it normal, it will break in itself with time. During the break in time, which is maybe 200 miles of stop and go driving, the idea is to let it slip over and over to get the surfaces to lap in so you can have full contact but don’t let the clutch get overheated. Once the surfaces lap in, the wear rate is reduced quite a bit, so if you don’t allow it to break in, then you are wearing more material than necessary. The problem is that some people will beat on the thing right away and never let the clutch lap in. Will it kill a new clutch immediately? No, at least not any worse than it would kill any clutch. This will just sacrifice clutch life. During break in, high rpm doesn’t matter, quick shifting doesn’t matter, full throttle once the clutch is fully engaged doesn’t matter. It is only how much power you are putting through the clutch during the slip of the clutch that matters."
hope that helps
"The break in procedure is not as critical as most people make it out to be. If you don’t overheat the clutch and drive it normal, it will break in itself with time. During the break in time, which is maybe 200 miles of stop and go driving, the idea is to let it slip over and over to get the surfaces to lap in so you can have full contact but don’t let the clutch get overheated. Once the surfaces lap in, the wear rate is reduced quite a bit, so if you don’t allow it to break in, then you are wearing more material than necessary. The problem is that some people will beat on the thing right away and never let the clutch lap in. Will it kill a new clutch immediately? No, at least not any worse than it would kill any clutch. This will just sacrifice clutch life. During break in, high rpm doesn’t matter, quick shifting doesn’t matter, full throttle once the clutch is fully engaged doesn’t matter. It is only how much power you are putting through the clutch during the slip of the clutch that matters."
hope that helps
Evolving Member
Joined: Sep 2004
Posts: 123
Likes: 1
From: Chicago -- Southside
I changed to a fidanza flywheel also and waited for about 400 before I hit it hard. I revved up during the breakin but not a hard launch. I have about 12000 miles since then and its OK. The chatter was annoying though in the beginning but I think that is from the flywheel.
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