So ive been doing a bit of reading on other car forums. Mostly DSM and Honda forums. I came across some threads that were pretty interesting, and actually surprised me that I have seen things similar on this forum. Especially because our cars like to snap axles if your to aggressive when launching.
Im replacing my stock clutch line with a SS braided line, and I want to add a inline flow control valve that will allow free flow when depressing the clutch pedal. But will restrict flow when letting the clutch pedal up (launching). The amount of restriction is adjustable via the control knob on the valve. This will basically lessen the shockload on the drivetrain by causing a controlled slip condition of the clutch.
Parker sells a control valve, and I am going to use NPT to AN adapters to install it on my 3an braided clutch line.
Heres a picture of the control valve:
The issue with this setup will be after the initial launch. The clutch would 'slip' the same way when upshifting through the gears. But I think there would be a way to work around that. Maybe a line lock solenoid? Im just spitballing here so take it easy on the bashing, pretty please.....
Just wanted to see if anyone has done anything similar to this before since I have not seen it mentioned at all.
In all seriousness I think you risk taking the driver feel out of the equation and are relying on a flow valve. Problem is that it will release slowly every time you press the pedal. You'll potentially smoke the clutch in no time releasing it slowly when WOT during a race. Adding more things to the clutch line increases the risk of things not working properly and leaving you stranded/needing a tow.
If you are doing pure race then it may be something worth trying. I have never seen or heard of that type of valve here. I guess you haven't either.
I understand that practice makes perfect. But sometimes in the heat of the moment, its easy to forget things until after you break an axle and are in need of a tow haha. It happened to me last season.
My car is no longer my daily driver, but from reading about people doing setups like this. The valve does not effect normal driving as long as the restriction is not to great. Im only considering giving this a shot because I enjoy the making/testing part of modifying a car. I called my local parker store and they have a control valve for $30, and the fittings to allow it to connect to the clutch line are fairly cheap. A setup like this may be tricky to get dialed in. But I feel like It would be worth it once it is setup properly. Also it would be nice to not even have to think about snapping an axle and having to tow the car home.
I actually just found a thread here on the forums back from 2007 discussing the Tilton valve (~$180). I am in the midst of reading it at the moment.
I was putting 500hp through stock axles....for 100k miles lol. Ran numerous 11 second passes; never snapped an axle unless it was my fault in how I came off the line or I had worn suspension parts.
People are running 10's on stock axles.....you are looking for solutions (bandaids) with less than 350whp. Do you think maybe it's not the axles/clutch?
I believe this is the setup that you are looking for. It is basically just a flow control valve and a Line Lock that is used to direct flow throught the valve when you want to (just when launching).
Simple to make this setup yourself, but can be bought from multipls sites online.
This won't keep you from snapping axles if you have worn suspension components. Preloading the suspension just before launch (slowly letting the clutch out until it just starts to grab while using the parking brake or a brake line lock) is also one of the biggest helps in eliminating broken axles.
Yeah that is the exact thing im thinking about making/trying. The parts are pretty cheap, and worst comes to worst I can just remove it.
Im installing a new master, slave, and SS braided line right now. Im going to start getting the parts together and see what I can come up with. Ill update this post with pros/cons. But Im thinking if the flow control valve is used with a line lock solenoid, the cons should be very minimal since the system will only effect anything on the launch.
CDV's suck majorly. The 2013+ Dodge Dart 6MT cars have one from the factory and the community there deletes them. They cause more of a headache than they help, plus the clutch feels inconsistent on warm and cool days or days that have a decent temp swing.
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