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Thread: Non-diagonal split Proportioning Valves?

  1. #1
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Non-diagonal split Proportioning Valves?

    Does anyone know some donor applications for converting from the stock diagonal split Proportioning valve to a Non-diagonal split valve?
    This would be on the S-body (minivan SWB).
    I considered a Wilwood unit, but can't seem to find one with metric threads.
    Thanks.
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
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    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
    '89 Dodge Caravan SE 2.5L turbo auto, "Mean Mini" yes, Gus' Mean Mini! (Current best 11.699 @ 114.43 mph! - Oct 15th, 2022 Cecil County Dragway, MD)
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    Super Moderator Turbo Mopar Staff 135sohc's Avatar
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    Re: Non-diagonal split Proportioning Valves?

    Stupid question but why metric threads ?
    1994 Shadow Sedan. 2.2 N/A, A568 400,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

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    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Non-diagonal split Proportioning Valves?

    Quote Originally Posted by 135sohc View Post
    Stupid question but why metric threads ?
    Stupider question: aren't the stock threads metric?

    Sent from my SM-T380 using Tapatalk
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
    '89 Dodge Caravan SE 2.5L turbo auto, "Mean Mini" yes, Gus' Mean Mini! (Current best 11.699 @ 114.43 mph! - Oct 15th, 2022 Cecil County Dragway, MD)
    MeanMini dragracing videos: https://www.youtube.com/playlist?lis...URZLB1RxGYF6vw
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    Super Moderator Turbo Mopar Staff 135sohc's Avatar
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    Re: Non-diagonal split Proportioning Valves?

    Some of the ABS stuff has metric threads. Most all of our stuff is 3/8-24 and on the prop valve there are two 7/16-20 ports to prevent someone from installing the valve backwards.
    1994 Shadow Sedan. 2.2 N/A, A568 400,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  5. #5
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Non-diagonal split Proportioning Valves?

    Quote Originally Posted by 135sohc View Post
    Some of the ABS stuff has metric threads. Most all of our stuff is 3/8-24 and on the prop valve there are two 7/16-20 ports to prevent someone from installing the valve backwards.
    Well great! Here I was thinking it was metric. I didn't do the brake line replacement, my brother did that for me before I ever picked the van up years ago.
    Maybe that Wilwood I was looking at with the adjustable rear proportion would work.
    Thanks for that info!
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
    '89 Dodge Caravan SE 2.5L turbo auto, "Mean Mini" yes, Gus' Mean Mini! (Current best 11.699 @ 114.43 mph! - Oct 15th, 2022 Cecil County Dragway, MD)
    MeanMini dragracing videos: https://www.youtube.com/playlist?lis...URZLB1RxGYF6vw
    and other cars, trucks and motorcycles
    https://www.youtube.com/user/SlugmobileMeanMini

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    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: Non-diagonal split Proportioning Valves?

    Quote Originally Posted by wheming View Post
    Does anyone know some donor applications for converting from the stock diagonal split Proportioning valve to a Non-diagonal split valve?
    This would be on the S-body (minivan SWB).
    I considered a Wilwood unit, but can't seem to find one with metric threads.
    Thanks.
    the stock threads are standard.

    i said ---- it and took both of the master cyl outputs and plumbed them into a single line and then split it off into two lines.... one to the back with a wilwood adjustable proportional valve and one to the front with full power braking.

    the car is not a daily driver and i can turn the rears down alot more than the stock prop valves will do.

    when bedding in the pads, i let the fronts fade till the rears locked up and then backed the rears off a bit. i dont have end swap issues. i also meticulously maintain my lines and hoses and make sure my e brake with lock the rears.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  7. #7
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Non-diagonal split Proportioning Valves?

    Thanks Brian.
    One thing that is on my to-do list is install some linelock solenoid, and I'd like the diagonal split to go away.
    Here is the valve I was looking at by Wilwood. And it is on sale through Prime!
    Wilwood 4444/30 260-11179 Proportioning Valve https://www.amazon.com/dp/B003LT619Q..._pxkeBbM5DKCS6
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
    '89 Dodge Caravan SE 2.5L turbo auto, "Mean Mini" yes, Gus' Mean Mini! (Current best 11.699 @ 114.43 mph! - Oct 15th, 2022 Cecil County Dragway, MD)
    MeanMini dragracing videos: https://www.youtube.com/playlist?lis...URZLB1RxGYF6vw
    and other cars, trucks and motorcycles
    https://www.youtube.com/user/SlugmobileMeanMini

  8. #8
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: Non-diagonal split Proportioning Valves?

    Quote Originally Posted by wheming View Post
    Thanks Brian.
    One thing that is on my to-do list is install some linelock solenoid, and I'd like the diagonal split to go away.
    Here is the valve I was looking at by Wilwood. And it is on sale through Prime!
    Wilwood 4444/30 260-11179 Proportioning Valve https://www.amazon.com/dp/B003LT619Q..._pxkeBbM5DKCS6
    that unit looks great.

    and is probably better than my setup. i looked under the hoods at lots of car shows and saw only one master cyl output on many cars and decided that it was good enough for my setup. that was 15 years ago lol.

    brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  9. #9
    turbo addict Turbo Mopar Contributor
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    Re: Non-diagonal split Proportioning Valves?

    Note that there are now hydraulic handbrakes that can run 2 lines.
    Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56

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