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Porportioning Valve

Discussion in 'The Garage' started by Don, May 5, 2003.

  1. Don

    Don 1/2 ton status

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    For you Member's running rear disc brake's.
    What type of porportioning valve do You run?
    /forums/images/graemlins/eek.gif
     
  2. TX Mudder

    TX Mudder 1/2 ton status

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    [​IMG]


    Valved for disc/disc and brand spanking new. $100
    -- Mike
     
  3. MudFrog

    MudFrog 1/2 ton status

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    Gutted.
     
  4. chevyfumes

    chevyfumes Court jester

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    Watch for the muzzleflash!
    web page Also the tech section in the bloody knuckle.. /forums/images/graemlins/thumb.gif
     
  5. Muddytazz

    Muddytazz 1 ton status

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    Mike, where did you get that prop valve?
     
  6. chevyfumes

    chevyfumes Court jester

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    Watch for the muzzleflash!
  7. Don

    Don 1/2 ton status

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    O.K. Thank's Guy's! /forums/images/graemlins/grin.gif
     
  8. jackedjimmy

    jackedjimmy 1/2 ton status

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    What is the aplication of that prop valve? On the inlinetube site, they dont list a disc/disc valve for a chevy truck. It does look like the one for a 55-57 chevy.

    Also, where is yours mounted? At the master cylinder, or does it directly replace the factory one?

    Finally, what kind of problems did you have with the fittings sizes on the valve vs. your factory ones?

    TIA
     
  9. Don

    Don 1/2 ton status

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    It's gonna go on a 71 K20, I'm gonna dump the stock, "light switch valve", and then replumb from there.
    It will be mounted just below the master cylinder, on the brace bracket. /forums/images/graemlins/eek.gif
     
  10. cegusman

    cegusman 3/4 ton status

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    I am running the same one as Mike. It mounts in the same pace as the factory one, It is a direct swap it uses the factory hard line fittings. I have no problems stopping my truck "d44/14ff disk 39.5 boggers"

    Link to the correct prop valve on inline tube
     
  11. mosesburb

    mosesburb For Rent Premium Member GMOTM Winner

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    On my rear disc setup, I run the line from the front brake section of the master cyl into a tee and then to RH & LH calipers. On the rear I run an adjustable (thumbwheel style) prop valve to the rear calipers. Fantastic setup as it is adjustable for loaded/unloaded performance. You do lose your brake failure light, but the brakes work so well that I no longer care. Just my $.02. Have fun!
     
  12. Don

    Don 1/2 ton status

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    Thank's again Guy's, I'll be putting this Disc/Disc combo together in a couple of week's. /forums/images/graemlins/grin.gif
     
  13. TX Mudder

    TX Mudder 1/2 ton status

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    HERE is the link to the truck prop valve. The link you gave is a different part number (looks the same, dunno what the diff would be.)

    Like cegusman said, exact same fitting and exact same dimensions as stocker - 100% easy bolt in. If you have a ORD steering box brace you'll need to remove it for a few minutes so you can change the prop valve out.

    -- Mike
     
  14. mountainexplorer

    mountainexplorer 1/2 ton status

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    I did my own rear disc brake conversion on my GMC, and didn't change the proportioning valve. I've driven it on the highway, in town and traffic, and off-raod a fair amount so far, and even stood on the brakes hard a few times. So far, I havent had a rear wheel lock up at all.

    Could the fact that I swapped in a 60 front with bigger brakes be the reason that my braking power is still evenly distributed?
     
  15. Don

    Don 1/2 ton status

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    That could be the rotor's and caliper's are alot bigger than on the 44.
     

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