Still have mines and it really dosen't bother me.

 

really dumb question, what is the CDV

 

Clutch Delay Valve. Its a system that regulates the clutch engagement speed so it can't be too fast. Think of it as a damper on a door - no matter how hard you try to slam it shut, the damper will slow the door so it closes with purpose but does not slam. Honda added it in 2004 because there were a lot of S2000 differentials breaking when people dropped their clutch on hard starts; its designed to prevent the driver from shocking the drive line and breaking things. The result is the S2000's clutch engagement feels like there's something between two metal pieces, like velvet. Removing it will give you the feeling of metal on metal, which feels more direct.

Back in 2004, someone noticed that the clutch slave cylinder looked different and found the CDV, and proclaimed that that was why S2000s had clutch slip (at redline shifts only). That is not the truth, just a belief that continues to this day because its an easy thing to fix. The truth is, Honda also replaced the light flywheel from the AP1 with one that weighs almost twice as much in 2004, but did not beef up the pressure plate to compensate. That is why you only get clutch slip at redline shifts and not during normal or even aggressive shifts. Its only a problem when the heavier flywheel is spinning so fast that the pressure plate doesn't have enough force to clamp down on it, and that only happens at redline shifts when you shift too fast. Shift a bit slower at redline and its a non issue.

The common remedy is to replace the stock pp with an ACT pp that has roughly twice the clamping force of stock. Some people also replace the flywheel with a lighter one, which will make an AP2 feel more like an AP1 on shifts. You can also remove the CDV to get that more direct feel in your shifts, but be aware of what its there to protect. If you don't do clutch-drop burnouts, you should be okay.

 

Still got it, never notice it.

 

(1) its much lengthier than 1ms
(2) its not the time, its the FEEL
(2a) i bought the s2k for the way it drives, not its speed


had mine removed first opportunity i could. say what you will. for me, it was NIGHT and DAY

 

uh huh. and i dont do burnout clutch dumps or hard launches, and i enjoy the more direct feel of the engagement, and my S is reliable

 

If you remove the CDV and don't to 5k clutch dumps, you'll be fine. The big thing is that the CDV has nothing to do with clutch slip, just how direct the shift feels. Imo you can't even feel any delay on normal shifts, the difference is like placing a glass on a table with or without a tablecloth on it - you either have a flinty feel or a smoother feel. Flywheel and pressure plate are what effect clutch take up, and changing them will give you a different character in shifting.

Most people don't even mind the CDV, just the weak pp. Its just that they think its the CDV when its actually the pp, like the OP.

 

This

I think that combination (ACT, no cdv, AP1 flywheel) is about perfect. Anyone who claims that just removing the CDV transforms the car is delusional.

 

took mine out. redline shifts felt terrible with it

 

Yup. Nope.