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Thread: oil pressure in 4cyl series

  1. 13th March 2005, 07:46 PM #1
    fernockulated's Avatar
    fernockulated
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    oil pressure in 4cyl series

    shock,horror, ferno's in the tech section

    ok,since i have been driving the old girl around ,have noticed that on start up the oil pressure is up around 50-60 psi,then after about 10-15 mins of driving it drops down to arounnd 30-40psi,my question is ,is this normal ,or is it some sign of wear/internal damage?
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  2. 13th March 2005, 08:01 PM #2
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    LandyAndy
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    Hi Ferno
    Quite normal,when the oil heat it gets "thinner" and the pressure then drops.
    Andrew
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  3. 13th March 2005, 08:37 PM #3
    Hellspawn Guest
    50psi oil pressure.... yikes !

    I mean that's good but gee it's high. I know it's (oil pressure) governed by the relief spring, bearing clearance and oil viscosity but 50 pound is pretty good for a cold engine.

    My GM shows 40pound at cold start up and 35pound when warm cruising along, 30pound at idle which is about all I ask.

    Every engine is different but just sounds high

    BUT..... I checked and.....

    the 2a work shop manual states oil pressure to be
    at 2000rpm 55~65lb/s.in. 8O

    and the relief valve is adjustable
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  4. 13th March 2005, 09:39 PM #4
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    fernockulated
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    Originally posted by LandyAndy
    Hi Ferno
    Quite normal,when the oil heat it gets "thinner" and the pressure then drops.
    Andrew
    thanks andy ,thought that mite have been the "logical" explanation,but thought i mite just check in case it mite have been "something else" :roll:

    dont worry hellspawn , a few others i have told that oil pressure to had the same reaction also,hence the question

    thanks for the quick response guys ,as always this place is a wealth of info,dont know where i would be without it,(probably in bed!) [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]
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