airhead oil pressure/rpm values ?

Discussion in 'Airheads' started by a_bakla, Sep 1, 2010.

  1. a_bakla

    a_bakla A&F

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    Oct 28, 2009
    Oddometer:
    139
    Location:
    Turkey,Tekirdağ
    I am using an oil pressure gauge on my G/S and
    here the pressure values and I am wondering if any problem about oil pump or....?

    heat engine 90-100 °C, oil castrol gtx 20-50

    ıdle 1000-1500 rpm 30-40 psi, (2 - 2.7 bar)
    riding (mostly) 3000-3500 rpm 50-60 psi (3.4 - 4.1 bar)
    open throtle 4000-4500 rpm 70-80 psi (4.8 - 5.5 bar)
    #1
  2. Plaka

    Plaka Brevis illi vita est

    Joined:
    Jun 19, 2010
    Oddometer:
    4,621
    Idle looks fine. Midrange looks fine, high end maybe too high. Gather other opinions. Got a clean oil filter on it? What are the pressures with the engine cold (to DX the pressure relief valve)
    #2
  3. a_bakla

    a_bakla A&F

    Joined:
    Oct 28, 2009
    Oddometer:
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    Location:
    Turkey,Tekirdağ
    Cold engine at first minutes of starting,filter just changed
    ıdle 1000-1500 rpm 100-110 psi ... ( 6.8 - 7.5 bar...)
    2000+ rpm 120psi + ( 120psi gauge limit ) ( 8 bar +)
    #3
  4. StephenB

    StephenB G(/)S ... what else!

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    Cold - up to 160PSI peak in the first seconds, quickling going down to about 80PSI at idle or so
    warm idle - less than 20PSI
    4000rpm - around 50-60PSI depending on riding condition

    Instrument: cheap 0-160PSI air gauge, non-calibrated

    [​IMG]
    #4
  5. Hawk Medicine

    Hawk Medicine Coyote's Brother

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    That high pressure at start-up make me think that revving the bike at start-up might not be the best idea! :lol3
    #5
  6. StephenB

    StephenB G(/)S ... what else!

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    You can say that out loud, Ken. Once you see your needle on the other end of a 270deg/160psi scale you close the throttle pretty fast!
    #6
  7. P B G

    P B G Long timer

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    Castrol GTX! Oil thread now!
    #7
  8. bmwrench

    bmwrench Long timer

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    Nov 10, 2006
    Oddometer:
    3,131
    ...and is the cause of oil filters that look like someone squeezed them very hard.
    #8