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      08-15-2018, 11:37 PM   #1
drunkenup
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Can you have too much oil cooler? Pressure drop concerns

I will be mocking up for mounts and cores for a homemade dual oil cooler kit in the coming days, and intend to use either two 19 rows, but given the chance and space permitting, I may use 25 rows instead. I am concerned about excessive oil pressure drop using 25 rows, and there seems to be little discussion on the topic, not to mention the N54 does not have a pressure level sensor, just a switch.

For reference, the 25 row coolers would have a capacity of 158 cubic inches per core, whereas the 19 row coolers would have a capacity of 117 cubic inches per core. The ER dual kit is advertised for 144 cubic inches per core of capacity. Opinions? I will be keeping the oil thermostat so I think warm up will be a non issue.

EDIT

FWIW, at least for the setrab coolers, the more rows you add (given row length remains the same), the less pressure drop occurs. But the longer row length, the more restrictive and higher pressure drop, all else equal. Refer: http://www.setrabusa.com/products/oi...ine/index.html
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Last edited by drunkenup; 08-19-2018 at 06:29 PM..
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      08-21-2018, 03:46 PM   #2
Jeff@TopGearSolutions
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Given that the ER is 144 and you wanted to do 158 it's about a 9% difference and there haven't really been any talks about oil pressure losses with upgraded kits. As you know it's always about a happy medium.
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      09-22-2018, 03:59 PM   #3
bluebeemer
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Oil, unlike air, is incompressible so there no "lag" introduced as system volume increases. In fact as volume increases the velocity will drop thus reducing pressure loss due to friction. All else being equal.
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      09-23-2018, 02:16 PM   #4
drunkenup
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It turns out the ER cores are the same 25 row cores just about everyone copies off each other, though I have elected to do top feed so I probably have a slight advantage in volume just in shorter lines and whatever else is disadvantageous with a bottom feed.

Out of curiosity I might decide to run a pressure sender using an AA adapter on the stock switch outlet on the filter housing
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