'09S2K

My car is a 2009 S2K with 26k miles. When going through the gears taking my car close to redline and shifting fast I am experiencing my clutch slipping. I am releasing the clutch all the way and it still does it. Only when shifting fast during WOT. I also tried taking second gear to redline and shift straight to sixth and go WOT and no slipping occurred. Am I due for a clutch already? :/

rjones

It's normal with the 04+ cars they have a clutch delay valve. You have to wait 1/2 a sec. before you stand on the gas after a shift.

I hate it, and often get on the gas to soon after a shift and it won't hold.

motocrossmann

Yep, it's the delay valve. My 08' does the same thing. I'm gonna remove that thing if I decide to buyout my lease.

spets

It's two things.

A) clutch delay valve. You can swap in an AP1 (00-03) slave cylinder or physically remove it from your slave cylinder.

b) 22lb flywheel. The AP2s have a flywheel that's almost twice as heavy as the AP1s. But Honda kept the pressure plate and everything else the same. So it is more work to clamp everything together.

the AP1 slave cylinder is the cheap fix, but if you ever change out your clutch, do yourself a favor and put an AP1 flywheel in too.

'09S2K

Wow I have never heard of this! So I guess I won't worry about it then. Thanks a bunch guys!

Saki GT

The slip you feel at WOT is the heavy flywheel - the posters above (rjones, motocrossmann) that blame the CDV are incorrect. The CDV limits shock to the driveline, not the floating slip you're experiencing. spets is closest to correct - CDV controls the metal/metal feel more than anything you will notice.

Best option is to simply slow your shifts a bit until its time to replace the clutch system, and then go with an AP1 flywheel and maybe a firmer pressure plate. You can also remove the CDV to change the clutch feel to more of a metal on metal feel.

JuicedS2K

I disagree 100%. I removed my CDV on my 04' and felt like i had a brand new clutch during hard shifts. It went from the feeling of slipping horribly to no slipping.

And yes i've read Billmans thread on the CDV. The OP is claiming symptoms of slippage, and removing the CDV will help him a lot towards what he is trying to accomplish, no delay at WOT.

Saki GT

I think you need to re-read Billman's posts. Also, are you telling me you are on the stock clutch with an FI setup?

There is a reason you feel the float at a 1-2 WOT shift at 8k rpm but not during a 1-2 WOT shift at 6k rpm - its flywheel inertia and pressure plate force. spets stated it best by outlining the two areas for improvement.

JuicedS2K

No, this is when i was stock, with stock clutch.

chuhsi

the slipping issue doesn't fully go away after just removing the cdv. it helps, though.

i now just wait a split second longer before mashing back on the gas.