Hello ladies and gentlemen. The engine's oil pressure is fine w/o oil cooler. With the oilcooler installed the idle oil pressure drops to as low as 8-9 psi, but the oil pressure operates under normal pressures as RPMs increase past the idle RPM.
The engine is a Ka24de(t) with:
-stock beltdriven oil pump
-stock oil pan and sump pickup (new gasket)
-journal bearing precision turbo (-4AN feed line, -8AN drainline)
-"T" fitting for oil feed line (stealthmode performance); where stock oil pressure sensor was threaded in under oil filter
-AEM 1-150psi electronic oil pressure guage; plumbed into the end of the T fitting
- oil feed line plumbed out of the side of the T fitting
*Earl's 19 row oil cooler; mounted in the inverted position with fittings on the bottom
*Greddy/GREX oil filter sandwich thermostat w/ -10AN fittings coming out of the 45 degree position ports on the sandwich ( the straight out ports were blocked with provided hardware; positioned so that the ports face the firewall.
*x2 45 degree swivel fittings from sandwich to tubing
*-10AN stainless lines from cooler to thermostat sandwich; W/ 120 deg and three 60 degree swivel fittings. (swivel fittings by Earl's).
Without the cooler and thermostat:
idle cold @ about 1K= (26-27)
idle warm @ about 950-1K=(13-14) then up to (17-18)
With the cooler and thermostat:
idle cold @ 1k= (26-27)
idle warm @ 950-1K = (10-11) sometimes as low as (8-9)
WOT @5500= 76; @3K=60
What am I doing wrong?! Any ideas? I've started looking at physics principles in the Fluid mechanics field and stuff like Bernoulli's Principle, but this still doesnt make sense to me because even though the oil is going to a larger diameter passageway (tube), it still returns to the same size passageway in the engine (and through the oil squirters). Any help would be greatly appreciated, thanks in advance
