What is normal oil pressure at idle?

Discussion in 'SRT Hellcat Performance' started by WNY Cat, Jan 11, 2015.

  1. WNY Cat

    WNY Cat SRT Hellcat Supporter Gold Supporting Member

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    I'm just curious. I only have 300 miles on my Hellcat and it's currently stored for the winter. I pulled it out of the garage today and started it up. After it got warmed up, I went into the performance pages to check the gauges and the oil pressure was 37psi at idle. What's normal?
     
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  2. Jim Hetrick

    Jim Hetrick Silver Member

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    Sounds about right, what was the temp at ??
     
  3. WNY Cat

    WNY Cat SRT Hellcat Supporter Gold Supporting Member

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    I think the engine temp was 201. Outside temp was 28. It's back in the garage covered up now. :(
     
  4. HellcatKid

    HellcatKid Silver Member

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    FYI Generally as a mechanics rule of thumb the minimum required is 10 psi per 1000 rpm so assuming idle is somewhere around 750 rpm them 7 and a half pounds will protect your bearings. I would be more concerned what it is at around 6000rpm.
     
  5. B5 Blue

    B5 Blue Platinum Member

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    Amen to that!
     
  6. fnkychkn

    fnkychkn swollen member Gold Supporting Member

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    oil pressure specification:
    minimum 13 psi (90 kpa) @ curb idle.
    25-110 psi (170-758 kpa) @ 3000 rpm.
     
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  7. SUPERCOOLSRT

    SUPERCOOLSRT VIP Hellcat Member

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    Where are these numbers from
    Mine is at 35% @85% oil life left
    1000 miles on cat
    Does this look normal
    Thoughts
     
    Last edited: Feb 17, 2016
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  8. terryturner

    terryturner Silver Member

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    Mine is also at 35 psi at idle
     
    Last edited: Feb 17, 2016
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  9. SUPERCOOLSRT

    SUPERCOOLSRT VIP Hellcat Member

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    What was the solution to this issue did you have new parts ordered did they come in from the dealer or do you have it unfixed at this moment.
    Tell us a little bit about it
    how many miles was on it when this happened was it higher oil pressure and then as it was less oil the pressure as the oil level went down as well thanks for the info kind of a geek when I comes to the stuff I love info
    Thanks
    Rob
     
  10. terryturner

    terryturner Silver Member

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    It's still at 35. Haven't drove it for about 2 months. Currently at 720 miles. I didn't realize it was an issue
     
  11. TallCool1

    TallCool1 Gold Member Hellcat Car Club Gold Supporting Member Nat'l Hellcat Tech Advisor HCC Charter Member

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    That's normal no issue.
     
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  12. BULL

    BULL ________173.7mph_______ ___2016 Colorado Mile___ Gold Supporting Member

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    At low engine speeds (idle), my pressure is very sensitive to what the actual rpm is, so there is proportionally large psi deltas with small rpm differences. If your car is "idling" even slightly low, you'll see what might seem like a "low" oil pressure, but it's directly proportional to engine rpm, unlike at higher rpm where you're getting into the filter bypass and other things.

    Mine drops (momentarily) to 35-40 with the engine at low-idle... and fluctuates around 48-55

    As long as it comes up to ~50psi or more at 1000rpm, I think you're inline with everybody else.


    And then 55psi (or more) at "normal" driving rpm*.


    Mine runs 55-62 at normal rpm and spikes even higher with higher rpm



    *I haven't had mine super hot on a hot day to know what pressures would be under those circumstances.
     
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  13. SUPERCOOLSRT

    SUPERCOOLSRT VIP Hellcat Member

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    Bull
    Awesome and thanks
    Big help
    Cheers
     
  14. gilgamesh

    gilgamesh Silver Member

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    Mine chills around 60-65 PSI at interstate cruising and jumps around 70 at WOT.
     
  15. BULL

    BULL ________173.7mph_______ ___2016 Colorado Mile___ Gold Supporting Member

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    SUPERCOOLSRT

    So with this question in mind, I took some pictures of my pressure and temps when I went out today...


    Cold, engine, oil temp 60F...
    20160217_135240.jpg

    ~60min later, trip to the bank and the post office
    Difference is car is fully warm...
    Idle...
    20160217_150719.jpg
    20160217_150732.jpg

    Parked, holding rpm with peddle..

    20160217_150747.jpg
    20160217_150750.jpg
    20160217_150758.jpg

    If you're getting something significantly different (lower) than this, the very first, low-dollar, low-risk, nothing lost thing you could do is change your oil-filer (and oil).

    You might have a defective by-pass in your filter... (you could have a 100 other things as well)
     

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