This is true, although someone has recently posted that they are able to do clutch drops without a problem with the delay valve in.

 

I did a clutch drop in my MY05 last weekend and it was fine, didnt smell the clutch burn.

 

What elevation where you at when you dumped the clutch and what rpm did you drop it at?

Thanks

 

I dumped the clutch at 6k rpm,.

 

i did it a couple times before at between 5-6k with no problems

 

Honestly, what the hell is the clutch delay for anyhow?

 

UGH! Sorry to hear about your clutch.

Anyone in Memphis want to help me with that delay valve?

 

I am one of them. I took out an 05 i made a deal on about 4 weeks ago and it was the damnedest thing.... I revved to about 4500 rpm and lightly popped the clutch and she began slip very nicely, it was incredible. I immediately re-engaged the clutch because I wasn't wanting to launch the car, i just wanted to sort of squirt. I am also used to launching the 2.0L. Anyhoo, yeah if i leased that particular car i wouldn't worry about removing the CDV. I think they've perhaps figured out a better adjustment or that was factory freak. I had already driven about 15 miles but had only been up to around 5500rpm. Doesn't matter, the 06 is packing electronic throttle .

 

If this was a rhetorical question, then read no further.



This delay valve is a valve in the slave cylinder of the clutch hydraulic system. It limits the amount and rate by which the fluid gets pushed back into the line when you lift up on the clutch pedal. It is believed that Honda wanted to make this car less of a "drag race" car. Launching this car is tremendously difficult and can be very hard on the drivetrain even when done right. Everything gets "hammered" hard when you launch this car. This has been known to break parts like transmissions, driveshafts, rear diffs, CV joints, wheel hub splines. Putting this delay valve in "cushions" the shock to the drivetrain by reducing the max speed at which the clutch parts can be brought together.
As already noted, you can still do clutch drops, but only from lower rpms where the torque is somewhat reduce in the powerband. No longer is it easy or possible to do VTEC clutch drops as many people used to do. Now, if you do one of those, the speed differential between the flywheel and the rest of the clutch parts is so great and the clutch clamping being so "slow", the clutch simply slips and gets glazed. It is hoped that this will scare the owner enough that it will only be done once and never again use the car in this fashion.

 

I'm from the "old school" of drag racing... cars with way more HP & TQ. Back in the day...we use to put heavier springs in our "cable style" (...am I dating myself?) clutch so it would pop back even faster than we could shift. I have a giant left quad muscle to prove it...

With the S2K's smooth hydraulic clutch and delay valve, I find it almost impossible to launch in the power band (VTEC). Take it from a "old school" drag racer. If you try...you will slip like crazy and smoke you clutch!!!

If you do manage to launch in the lower power band, the clutch return is still very slow. Although, that may just be my perception due to my giant left quad muscle...