240SX clutch

[erlrich]

Edit: ACT has the heavy duty PP and a sprung and unspring 6-puck disc. I see how using the sprung would reduce vibrations, but the springs seem like they could be a failure point. I've had the unsprung in the car and the tranny doesn't seem any worse for wear, but maybe symptoms just haven't shown up yet. Earl, is your disc sprung or unsprung?

Mine is the solid 4-puck disc. It's a little rough to drive around the paddock, but once on track you can't tell the difference between it and a stock clutch - except for the no slipping part. The trans is a 100k+ mile one I replaced in '06 (before the new clutch), and it's still working fine. I wouldn't hesitate to put the same clutch back in next time.

[CRallo]

Plus one for don't use Centerforce! One failed in our 240sx.

[Tristan Smith]

A stock clutch set up is going to be fine. You probably wont notice any difference. For what it is worth, I used a "Zoom" clutch and PP in my 240 with great success. Thing looked brand new after three years of racing with it, when I dismantled the car.

Not sure if they still sell them or not.

[DavidM]

I've got an ACT heavy duty PP and 6-puck solid disc on the way. I considered going with the 4-puck like Earl used, but I still drive the car on the trailer and thought the 4-puck might make that more of a PITA. Plus what I pulled off was a 6-puck and I figured I'd just stick with status quo for now. I may switch to a 4-puck disc at some point.

It occurred to me that my problem could be the clutch pedal isn't adjusted right and is pushing the release bearing too far. Matt mentioned this earlier. I replaced the clutch pedal assembly when I rebuilt the car as the old one was worn out. I don't recall adjusting the new one. I'll adjust things this time around to make sure that isn't a problem. It was about time for a new disc and I've replaced all the pieces parts so hopefully I won't have to touch the clutch again for a long time.

David

[erlrich]

I've got an ACT heavy duty PP and 6-puck solid disc on the way. I considered going with the 4-puck like Earl used, but I still drive the car on the trailer and thought the 4-puck might make that more of a PITA.
David

Sorry I wasn't more specific earlier; the only time the clutch in my car gets to be a PITA is when I'm driving around slowly in 1st gear - as in the paddock. The on/off the gas you do when driving slowly tend to be a little jerky, and the car will actually start to buck if you aren't paying attention. My solution is to get it moving and then coast with the clutch in, only letting it out when I need to accelerate again. Driving it on the trailer is no problem at all; you can slip the clutch just like a stock unit, it isn't 'grabby' at all. I think you'll be fine with the 6-puck disc though; in fact I doubt you would be able to tell the difference from a stock clutch.

[chuck baader]

David, if you check the thickness of your old 6 puck, you will probably find it extremely close to the new one. That is, have your flywheel resurfaced, replace the pp, and keep the old 6 puck. Chuck

[DavidM]

The flywheel is good. It was perfectly smooth. I ran some fine sand paper over it just to remove any disc material, but there was no wear on it. The clutch disc is definitely worn. It's not down to the rivets, but some material has flaked off the edges. This way I know what's in there and when it was installed. Should have the car ready to go this weekend.

David