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is this good water press. psi?

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Old 06-04-2012, 04:41 PM
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Default is this good water press. psi?
at 2200 rpm reading 5 psi.
at 3000 rpm to 4900 rpm 10 to 12 psi
on a big block mercrusier with blowers
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Old 06-04-2012, 08:13 PM
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yes, those are good numbers
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Old 06-04-2012, 08:23 PM
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thanks
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Old 06-05-2012, 07:21 AM
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ttt
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Old 06-05-2012, 07:44 AM
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My 496 is 4 at idle. At 2000 RPM it is appx 15 psi and at 3000+ it is around 25-30. We are talking water pump pressure here for the raw water pump, right?
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Old 06-05-2012, 08:18 PM
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taking readings at the side of the block. until i get a few fittings to take readings from my intakes
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Old 06-06-2012, 07:35 AM
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Seems low to me but my experience is limited. I thought you'd want to see 20-25 with raw water cooling & 35ish with closed cooling.
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Old 06-06-2012, 07:45 AM
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That is right where my 575sci's run, never breaks 150 degrees.
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Old 06-06-2012, 08:29 AM
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Originally Posted by jbraun2828
yes, those are good numbers
+1
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Old 06-06-2012, 08:33 AM
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Originally Posted by thirdchildhood
Seems low to me but my experience is limited. I thought you'd want to see 20-25 with raw water cooling & 35ish with closed cooling.
You don't wan't to see over 30lbs.....
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