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IO-540; What Is Normal Oil Pressure?

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Geico266

Joined: 13 Jun 2008
Posts: 18

Posted: Wed Aug 27, 2008 5:06 pm Post subject: IO-540; What Is Normal Oil Pressure?

I searched and could not find a thread discussing normal oil Pressure for the mighty 0-540 or IO-540.



I just adjusted my pressure up a tad.  I now have readings of Take off (oil temps 100F) 105 PSI, 75PSI cruise, 24 PSI Hot engine idle (at) 650 RPM. I am a tad concerned about the idle PSI. What are your readings?



Thanks in advance.



Go Huskers!  :-)

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RobHickman(at)aol.com
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Posted: Thu Aug 28, 2008 12:34 pm Post subject: IO-540; What Is Normal Oil Pressure?

My oil pressure numbers are almost the same as yours in my RV-10, I  get 32 psi at 640 RPM hot.

  

 I was told that the Lycomming minimum spec is 25 psi (at) 650 RPM

  

 I was instructed to remove the adjustor, spring, and ball and inspect  the ball seat in the case.  Then I am supposed to put the ball back onto  the seat and using a brass punch and hammer tap the ball to make sure there  is not a burr on it and it fits into the seat.  

  

 Rob Hickman

 N402RH  RV-10 

  

  



It's only a deal if it's where you want to go. Find your travel deal here.

  [quote][b]

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Geico266

Joined: 13 Jun 2008
Posts: 18

Posted: Thu Aug 28, 2008 10:22 pm Post subject: Re: IO-540; What Is Normal Oil Pressure?

Thanks Rob, 



 I appreciate it. I'll try setting the ball again.  I pulled it out just to look at it, and it looked fine.  I would like to see a tad bit higher oil pressure when idling hot, but may have to live with 24 PSI. I'm probably worrying about nothing, but that would be normal. :? 



Thanks again, 



Larry Geiger

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