CDV (clutch delay valve delete) question

amirza786

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Ask and ye shall receive. Here's my 1:47 at Big Willow on Stock Summer Tires.

I pass not to far from Big Willow when I come to SoCal, one of these days I'll track my Lexus on one of my trips. I still have the old tires sitting in my garage, they are A/S but should work out fine (I don't want to wreck my Michelin Pilots)
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mtlsi

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i think the fact that the stock clutch is unsprung the CVD is the ``sprung``
 

NoKz

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NoKz

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what are your thoughts on the ss clutch line?
My bad bro, I just noticed this. I actually only used the SS Line from the CMC to the mid-point on the clutch line where the factory hard-line begins. I did not replace the entire thing with the SS line. I was told by my mechanic that I wanted to keep any additional flex out of the line. So far, haven't had any issues with it. I actually have the PRL SS Clutch line just sitting in my garage if you wanna buy it LOL.

Honda Civic 10th gen CDV (clutch delay valve delete) question fullsizerender-46-
 


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kwakkwak17

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My bad bro, I just noticed this. I actually only used the SS Line from the CMC to the mid-point on the clutch line where the factory hard-line begins. I did not replace the entire thing with the SS line. I was told by my mechanic that I wanted to keep any additional flex out of the line. So far, haven't had any issues with it. I actually have the PRL SS Clutch line just sitting in my garage if you wanna buy it LOL.

fullsizerender-46-jpg.jpg
Gotcha thanks again! I'm alright thank you thought, already have one otw in the mail :)
 

blinkz0rz

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I have been running 2 years with the CDV delete. I also put the PRL SS line in at the same time. I daily the car to work and don't abuse it. I think the clutch feel is fantastic without the CDV as you can feel more clutch engagement.

To me, which I have been driving manual for 15 years, the CDV is meant for rookies. I have driven manual transmissions ranging from cable clutch 60-70 Mopars to the early 90s hydraulic clutches, and it feels more realistic deleting the CDV.
 

10GenPearlSi

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I have had the CDV removed for over two years. I love it! It makes it much easier for me to get smooth engagement. I also have had flex fuel for almost the whole time. I mostly drive in Map 3 sport mode. For the first year plus I kept my original clutch. I upgraded to Eman's CTR clutch a few months ago. I also think that Honda put it in for beginners and drag racers to protect from dropping the clutch. If you don't do that you don't need the CDV.
 


Deleted member 47337

In my opinion dont open that can of worms until you need a clutch replacement and even then I would advise against it. It is no bueno when using the stock dual mass flywheel. Many are getting away with it but long term it hurts flywheel and main shaft carrier bearings in the trans.

The better question is why? I am assuming you dont have any issues and you are just trying to "improve" something?
Type R has a single mass flywheel...at least my 2021 model does.

I just removed the CDV and the car is a completely different car...like night and day. The car feels so much more agile, and easier to handle. It's almost efforless shifting now.

The car gets up and moving in 1st gear so much faster as well...and clutch engages WAYYYY smoother...during every gear shift. That 1st to 2nd gear shift that everyone dreads is nothing now.

I recommend every single Type R owner to do it. It's a shame that I didn't do it before...you really wont know what you're missing until you do it yourself.
 

kshawn

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I would like to add to this thread. I've been running a CVD delete for about 40k. I'm currently replacing the trans.

That being said. I beat on the car and it's being pushed pretty far.

Shifting was definitely quicker with the CVD gone. But ya if you're not always precise with your shifts you're going to notice some shock when you just slightly time it wrong.
 

Deleted member 47337

I would like to add to this thread. I've been running a CVD delete for about 40k. I'm currently replacing the trans.

That being said. I beat on the car and it's being pushed pretty far.

Shifting was definitely quicker with the CVD gone. But ya if you're not always precise with your shifts you're going to notice some shock when you just slightly time it wrong.
My coworker has a 2017 Civic Si as well and his odometer read 61,489 today. He did the CDV delete the same week he bought the car. He drives stick like a professional and he hasn't had a hickup. He also doesn't beat on the car at all, but does drive fast...but nothing stupid like dumping the clutch or chirping 1st to 2nd. <---dumping the clutch is the trans killer on an Si, because it has a really heavy flywheel. The Type R can take a lot more punishment, but I wouldn't do it to either car...I have mechanical sympathy.
 

Ben775

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My clutch Is softer after delete anyone else have this happen?
 

Deleted member 47337

My clutch Is softer after delete anyone else have this happen?
It shouldn't be softer. If anything, the same as before.

If you did the delay valve delete, make sure you get all of the air out of the clutch lines...double check. In fact, triple check to make sure no bubbles are in that line.

Also, check to make sure you have no clutch fluid leaking anywhere. Take a flash light and check from the hood looking down.

Also, check to make sure you have enought clutch fluid in the resevior.

Last, hopefully you put the cap for the slave cyliner back the correct way. Some people have put the plug back on the slave cylinder backwards. - That's kind of okay, since the O-ring still seals the slave cylinder...but that may effect the feel of the clutch.
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