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Thread: Clutch Flow Control Valve

  1. #1
    Premium Member boosted_teg's Avatar
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    Clutch Flow Control Valve

    There are a few control valves on the market. These are the main ones ive seen being used.


    The Tilton flow control valve is designed to reduce shock load to the driveline by allowing the clutch to slip slightly during engagement. Shock load is a result of an abrupt clutch engagement when the crankshaft and input shaft speeds are not precisely matched. The flow control valve is designed to reduce the chance of losing traction on down changes and/or reduce the chance of damaging driveline components (broken drive shafts, gearboxes etc.) This valve can also be used in drag racing applications to reduce shock load to a driveline when launching.

    The valve works by restricting the return flow of the hydraulic fluid by a tunable amount. Fluid flow is not restricted during clutch disengagement. Therefore, gear changes are still quick and pedal feel is not altered. The valve will have an effect on quick clutch actuations only. It will not alter fine clutch modulation (small pedal movements).

    The Tilton 90-5000 clutch flow control valve includes three orifice sizes (.021”, .028” & .040”) that enable clutch engagement to be tuned. The valve features 3/8”-24 UNF AN3 fittings allowing it to be fitted directly to most Tilton master cylinders or fitted in line to -3 hoses.




    Clutch Masters also makes ones which, in my opinion, is more user friendly. No need to break the line and bleed the clutch again.




    And a DIY one

    The inlet and outlet are inverted flare to use with stock style clutch lines. A nitrous jet is seated against the inlet with a spring. The inlet fitting is chamfered for the jet to seat in. When the fluid travels from the master cylinder it blows the jet off it seat and travels around it. When the fluid travels from the slave to the master the spring and fluid seat the jet and the fluid must travel through the orfice.

    Here is the explored pic:



    assembled



    Same but with -3an inverted fittings

    2001 Boosted Built k20a2 Billet BB 6766BB

    2013=579whp 406trq @ 24 psi c16
    10.87@137mph

    2014= 510whp 370trq @ 18psi pump gas


    2015= 7xx @ 30psi??

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  4. #2
    Boostaholic
    monjarassi's Avatar
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    great info!!! repd

  5. #3
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    Anyone use any of these?

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