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  1. #1

    Does viper have a "clutch delay valve"

    I saw on a hellcat forum the manual hellcats have a " clutch delay valve"

    Does gen 5 viper have this too?

    Pete


  2. #2
    Tech Team

    Join Date
    Mar 2015
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    Unless there was a change to Gen 5, no there is no damper in the clutch system.

  3. #3
    CDV_20200811_174502_1.jpg

    I found it! Finally! I did this mod on my Challenger ScatPack 5 years ago and loved the night and day difference. When I bought my 2017 Viper I could tell the clutch releasing felt the same as my ScatPack did before removing the CDV. After searching on the internet a couple years ago without any luck, I gave up the search to find out if the Viper had the same CDV setup.

    I wasn’t satisfied though. So last year I disconnected the hydraulic line at the transmission and quickly poked around in the hole to see if it was there like it was in the Challenger. With hydraulic fluid dripping in my face I was in a hurry and could not for sure verify if the CDV was in there. I connected the lines back together as I couldn't find anything to cap it with. And too much fluid was dripping.
    Anyway, two weeks ago I tried again; this time capping the line after disconnecting them. Needless to say, after poking with a drywall screw and looking through a mechanics mirror, I gave up and put it back together gain for the second time. This bothered me because, after owning so many manual transmission cars in my lifetime, I knew this did not feel right. The other day I thought well, if it isn't at that end of the hydraulic line it must be at the other end; so today I did my investigation and sure enough that is where it was.

    It is in the braided line right at the connection to the master clutch cylinder coming out of the firewall.
    First you pull the hose from the master cylinder to the reservoir and point it up and in front of the brake booster, it did not drip much fluid. I was then able to remove the clip holding the braided line to the master cylinder and disconnect it. There are two clips and an intermediate symmetrical male connecting piece between the master cylinder and the braided line. I disconnected both because I did not know what I was doing or where the CDV pieces were. I now know the CDV pieces are in the braided line. You may be able to just remove the clip holding the braided line. This was a pain in the butt as there was no relief to put a small screwdriver or hook into. There is a special tool you can buy that pushes this clip out. I did not want to run to the store to buy one so after looking for a suitable tool I found that a blade type automotive fuse works. I had to file the inside edges just a bit to straddle the plastic on the fitting. The retaining clip came out very easy using this method. After poking a deck screw into the hole, I could feel the rubber piece. A couple of twists and out it came. I could now see the square piece in the line with a flashlight. I used a drywall screw for this. A couple of twists and out it came too. The Viper piece is green. The Challenger piece is blue. No idea why.
    Now it was just a matter of reconnecting the braided line to the master clutch cylinder, hooking the hose from the reservoir back to the master clutch cylinder and pumping the clutch pedal until it was stiff again. This took maybe 50 pumps. Make sure you clean up as much as you can reach of the brake fluid that dripped inside the engine bay.

    I have yet to take it for a test drive other than in and out of the garage but if this mod is to the Viper as it was to the ScatPack, I know I won’t be disappointed.

  4. #4
    Does anyone know what the purpose of that valve is?

  5. #5
    Quote Originally Posted by SRT_BluByU View Post
    Does anyone know what the purpose of that valve is?
    The CDV allows the clutch to engage at a slower rate than it was disengaged.

  6. #6
    What the benefit of having it v. not? Im sure engineering put it in there for a reason??

  7. #7
    Quote Originally Posted by SRT_BluByU View Post
    What the benefit of having it v. not? Im sure engineering put it in there for a reason??
    Mechanically restricts/smooths the clutch action. Allows clutch to engage slower than the driver intends/allows, saving wear/damage to clutch and reducing warranty claims.

    I always pulled them out to gain more clutch control for drag racing.

    I didn't even think to check the Gen2.
    Last edited by MH60M; 08-12-2020 at 08:25 AM.

  8. #8
    Got it.. thanks


 

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