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Elite Marine

07-04-2009 07:50 AM

525 EFI Max Water Pressure

Anyone know what the max water pressure on the raw water side of a 525 cooling system is?

I would think it wouldnt matter as the water only goes through the exchanger and never touches seals/gaskets etc..

My current set up uses relief valves, but I was just wondering if they are really necessary.

Rage	07-04-2009 08:37 AM

Quote:

Originally Posted by Elite Marine (Post 2902758)

Mercury spec on the sea water pressure for a closed cooling496 is 30-50 psi (5100rpm).

Elite Marine

07-05-2009 09:05 PM

Thank you. Then it was smart of Mr. Zastrow to install reliefs on my 525's!! He sure doesnt look that smart!

Brad Zastrow

07-06-2009 12:44 PM

Glad to be of service smart azz. :lolhit:

509 SC

07-06-2009 09:06 PM

Kirk, What were you getting for pressure at WOT before you installed the reliefs. I'm off the gauge at about 40psi but I've heard that Mercury Racing says that's not a problem. Did I hear wrong? Steve

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