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2G Wheel Hop from Clutch Swap?

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spyderdrifter

10+ Year Contributor
5,267
711
Jul 11, 2009
Somewhere in, Colorado
I had to change my throw out bearing maybe 2 months ago and decided to try out a different clutch while I had the trans out. I had an ACT 6 puck unsprung disc in the car which I really liked, and put in a 4 puck sprung disc. It wasn't new, but had more friction material than the 6 puck so I decided to see which was better for me. I'm using the same flywheel and ACT 2600 pressure plate. I now have what feels like wheel hop every time I accelerate from a stop in 1st gear under light throttle. Could this just be because I put in a new disc? Didn't have hop prior to the swap.
 
Things may get better after some miles & the new disc has a chance to bed in to the reused PP & flywheel. Looks like there's a few hot spots which aren't helping but it does sound like possible chatter from the new disc not being able to fully grab yet.
 
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wowwow dude. You didn't have time to do a clutch job right? Ridiculous.
Really? You have to be insulting? Maybe you have adequate time to do a "proper" clutch job, but not everyone does. This is a daily car, and my ONLY driveable car. So If I don't have more than a weekend worth of time to change my parts, that's my problem, not yours to point out and ridicule."Ridiculous"......
 
4 pucks are generally grabbier. How was the condition of your mounts when you had the trans out? The soft rubber will contribute to wheel hop. I'm running a twin disk and my solution was some diy solid mounts after the polyurethane inserts failed.
 

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Sounds like chattering as @ThunderChild mentioned, due to non matched an used disc and unsurfaced PP/flywheel. If the disc is really almost new, maybe it gets better by time like @Mello mentioned. If not, just get a resurfacing job when you have time.
 
My mounts are actually in decent condition, but they're all OEM material. I've been looking into polyurethane filler for them, but haven't done anything yet, mostly research for that. The disc wasn't new at all, just had a bit more material than the 6 puck I had in before it.
 
My mounts are actually in decent condition, but they're all OEM material. I've been looking into polyurethane filler for them, but haven't done anything yet, mostly research for that. The disc wasn't new at all, just had a bit more material than the 6 puck I had in before it.
I don't remember any "wheel hop" per say when I reused my PP and 6 puck disc, during my old trans swap. The only change was the TOB, fork, and transmission. Mind you this was over ~7 years ago, but the biggest change I remember was BIG chatter. She was noisy as all hell on initial engagement from a stop, it was like a rhythmic squeaking sound that was synchronized with the wheels moving. You could definitely feel it too, maybe yours is just an extreme case? maybe if you heat up the clutch assembly a tiny bit and get the high spots down it'll settle a bit more
 
Really? You have to be insulting? Maybe you have adequate time to do a "proper" clutch job, but not everyone does. This is a daily car, and my ONLY driveable car. So If I don't have more than a weekend worth of time to change my parts, that's my problem, not yours to point out and ridicule."Ridiculous"......
Hey, relax...toughen up some, what he was saying wasnt that off the mark, like it or not. For your original problem, some plates just chatter more than others, those four pucks do have a learning curve to using them to keep them from chattering, remember that those are intended for racing and not street use, chatter or grabbing is what they do.
 
I'm tough enough, but that crap was out right unnecessary to this post. It offered nothing but bullsh!t and people like that just don't need to post.

I don't remember any "wheel hop" per say when I reused my PP and 6 puck disc, during my old trans swap. The only change was the TOB, fork, and transmission. Mind you this was over ~7 years ago, but the biggest change I remember was BIG chatter. She was noisy as all hell on initial engagement from a stop, it was like a rhythmic squeaking sound that was synchronized with the wheels moving. You could definitely feel it too, maybe yours is just an extreme case? maybe if you heat up the clutch assembly a tiny bit and get the high spots down it'll settle a bit more
How would you suggest to "heat up" the clutch? Other than the disc, the only other part I replaced was the ToB due to the old one being suspect of a noise problem that it ended up not solving. However I don't believe the clutch is the source of that noise since it's been ongoing since the car became driveable again last year.
 
Personally I would try to do the opposite & not heat up the disc but go easy with lots of easy stop & goes. IMHO heating up the disc would only make more hot spots & the hot spots are hardened material compared to the surface where there are not hot spots. It's hard to remove hot spots even with resurfacing because they tend to go below the top of the friction surface & require more material to be removed to get under them.
 
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Well....heating up may not be the best choice of words, as that's fairly subjective. More like slip the clutch more than you usually would to speed up the process of it breaking in. Which....in practice....gets the disc hotter, hopefully knocks off the high spots.

On the note posted by others about 4 pucks....I have a Southbend SS-X PP (2700lb) with a sprung 4 puck disk (ceramic material): ZERO engagement chatter, but YMMV especially dependent on how you break yours in.
 
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