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Unread 06-18-2013, 12:53 PM   #1
TA-YJ
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1992 YJ Wrangler 
 
Join Date: Dec 2007
Location: Pennsylvania
Posts: 533
Safe Oil Pressure?

I fired up the "new" engine the other day and the oil pressure has caught my eye. My old engine would go from ~20psi at hot idle to ~60psi on the highway. The one I dropped in goes from ~15psi (Maybe a little lower) to ~45psi on the highway. I swapped the pressure sensor over so I know that is not the issue. I am just wondering if these pressures are safe. Thanks.

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Unread 06-18-2013, 12:57 PM   #2
jokerchief462
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1989 YJ Wrangler 
 
Join Date: Nov 2010
Location: Sin City, Nevada
Posts: 2,858
Yes you are good. IIRC the book says 40-75 at high RPMs and 15-40 at idle. Each engine acts differently depending on age and the oil and the temp. Enjoy the engine it should last a long time with care.
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Unread 06-18-2013, 01:04 PM   #3
dillonjm
30mm @ 70/sec
 
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2003 TJ Wrangler 
 
Join Date: Jun 2003
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Typically 13-15 @ idle then 10psi/1000rpm is min spec (as read from a mechanical gauge).
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