Marrk

At my request, my dealer customer service person sent me a few pages from what appears to be a shop manual. They contain only a few lines and diagrams regarding the clutch delay orifice mechanism, or what has become known in the Forums as the clutch delay valve, found on '04-'07 models.

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Here's what it says:

Function
The delay orifice mechanism improves clutch operation by delaying the slave cylinder release speed when the clutch pedal is suddenly released. The delay orifice mechanism is built into the slave cylinder.

Operation
When the clutch pedal is pressed, the fluid pressure from the master cylinder moves the one-way valve in the direction shown in the illustration. The fluid flows through two passages: the orifice part and the filter part. It then flows out to the slave cylinder to release the pressure plate and clutch disc joint.

When the pedal is released, the fluid pressure from the slave cylinder moves the one-way valve in the direction shown in the illustration. The one-way valve blocks the filter part passage and delays the clutch release speed by returning the fluid to the master cylinder through only the orifice part passage.

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This tells me that the clutch delay orifice mechanism is, crudely put, an "anti-clutch dump" mechanism. After complete disengagement of the clutch, the delay orifice mechanism is not working and has no effect on torque or acceleration. Am I reading that right?

Marrk

klee1113

100% correct

Boofster

Dude just take it out.

It's a little piece of plastic with a spring inside it that delays the fluid. We don't need handicaps on our cars.

00CivicSi

That's always how I understood it worked.

Marrk

[QUOTE=Boofster,Apr 26 2007, 10:54 AM]Dude just take it out.

neveronlines2k

Yes there is, but I could not sem to find it. You could also use the AP1 master cylinder to replace the newer version (older cars did not have it) the downside is the AP1 unit weighs more than the newer version.

FISH22

click me

Billman250

The delay is there to allow the crapy heavy flywheel time to decel.

MANY people are getting serious clutch slip after removing it.

FISH22

this is why i'm hesitant to remove it.

Saki GT

Yes, but the clutch slip is pretty badly with it in too! I've settled on keeping it in until my clutch wears out and then removing it when I replace the clutch assembly with better parts (ie lighter flywheel).