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Jagg Oil Cooler Bypass Valves

Discussion in 'Fluids!!' started by francoblay1, Jun 21, 2015.

  1. francoblay1

    francoblay1 The Spaniard

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    [​IMG]


    Ok, I know there was a thread on this subject but I can't find it so I start this one.

    I am interested on hearing from anyone who have used or is using them.

    Worth it? Pros & Cons? Manual or Auto? etc etc.
     
  2. Dakota

    Dakota Well-Known Member
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    Franco, I had a manual Jagg by-pass new in the box I gave to a member on here awhile back. Never used it so can't comment good or bad. I do know that you would have to do a little adapting as the BD oil cooler has a smaller line going to it and won't fit the Jag barbs.
     
    francoblay1 likes this.
  3. francoblay1

    francoblay1 The Spaniard

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    Maybe this is enough for the very cold winter days? for me very cold means 32 - 50 F

    [​IMG]

    I run two (2) Coolers.

    [​IMG]
     
  4. liferider

    liferider Guru

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    I did all my adapting and hid everything under the bike! But it's just a 1/4"x 1/8" adapter. I run the Manuel just because I'm a hands on person. Is with them off in October and I turn them back on in July. I'm in Louisiana and this is the Deep South!
     
  5. francoblay1

    francoblay1 The Spaniard

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    Interesting concept:

    The Jagg By-pass Valve acts as a manual thermostat.

    With the by-pass valve in the OPEN position:

    Arrows on the by-pass dial point across the body

    Oil flow will by-pass the oil cooler by taking the path of least
    resistance (the cooler, more viscous oil in the oil cooler and oil
    lines leading to the oil cooler allow the warmer oil to by-pass
    the oil cooler when in this position)



    With the by-pass valve in the CLOSED position:

    Arrows on the by-pass dial point in the same direction as the
    oil lines

    Oil flow will be directed fully to the oil cooler and back The Jagg By-pass Valve is designed to be installed in the oil hoses between the oil cooler and its source and return to the oil tank.

    http://www.jagg.com/pdf/instructions/oilcontrol/oilbypassvalves/4000/4000 By-pass instructions.pdf
     
  6. francoblay1

    francoblay1 The Spaniard

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    So theoretically you could run it all year round and the oil would find its own way (on or off the coolers) depending on the outside temperature.....
     
  7. liferider

    liferider Guru

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    That is correct, with the automatic valve! With the Manuel you direct where the oil flow goes. It's just that a automatic bypass & a Manuel bypass. I guess I figured people understood that. The automatic : the valve bypasses the cooler till the oil is to hot then a double plunger one opening to the cooler and one closing the bypass allowing oil to go through the cooler where it is air cooled 10*~20* and returned to the oil tank. With the Manuel bypass. You divert the oil yourself from and not allowing the oil to go through the cooler but streight back to the tank.
     
  8. francoblay1

    francoblay1 The Spaniard

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    Accordingly to their explanation in the Manual, you do NOT totally cut the access to the coolers... instead it opens a path for the hotter oil to find its quickest way back into the tank when the outside temperature gets cooler...


    [​IMG]

    4000 Manual By-pass

    [​IMG]
    Automatic By-Pass
     
    #8 francoblay1, Jun 21, 2015
    Last edited: Jun 21, 2015
  9. liferider

    liferider Guru

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    Your dead heading on Manuel
     
  10. FrankBDPS

    FrankBDPS Well-Known Member

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    Pretty simple really.
     

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