High performance Ford 6 cylinder DOHC engines need a high performance oil pump, and Atomic has engineered the answer. We produce billet steel oil pump gears to replace the powdered metal OE gears and also supply fully prepped pumps or can rebuild your own.
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Our steel bodied oil pump is a high performance oil pump that gives stable oil pressure even at hot oil temperatures. The steel body expands less than billet or factory cast pumps (both aluminium) and oil pressure stays stable across the oil temperature range. The pump's pressure relief valve spring can be changed to increase oil pressure beyond standard.
Every pump bought from Atomic is tested in house on our oil pump test bench. Every pump gets run for nearly an hour at different RPM to bring the oil up to around 90*c. We then run the pump at different RPM and note the pressure. We often change out the springs during testing to tune the oil pressure of that pump to the motor we are building. A high revving 1500hp engine will have a different pump setup compared to a 600hp VCT engine.
We recommend a medium spring for engines with VCT and high pressure for non-VCT engines that have vernier gears. VCT gears start to get harder to control around 80psi of oil pressure and can result in error codes on standard ECUs.
High performance Ford 6 cylinder DOHC engines need a high performance oil pump, and Atomic has engineered the answer. We produce billet steel oil pump gears to replace the powdered metal OE gears and also supply fully prepped pumps or can rebuild your own.
Ford DOHC, 2J Toyota and various Nissan oil pumps are Gerotor design pumps which are driven directly off the snout of the crankshaft and subsequently are subjected to twisting moments that increase substantially with RPM. These torsional forces cause the oil pump drive gear to be thrust clockwise and anti clockwise, which eventually leads to the failure of the gear. The torsional moments are of a higher frequency and greater amplitude in manual gearbox equipped cars due to them being “on and off” the throttle more often during gear changes, downshifting etc.
Ford DOHC 6 cylinder oil pumps fail for 2 reasons:
The original equipment (OE) gears are made from powdered metal and lack the structural integrity to withstand the stresses created in high revving engines. Secondly, Gerotor pumps produce pressure and volume almost proportional to engine speed, so high revs equals higher volumes of oil. These larger volumes cannot be adequately managed in a standard oil pump and hydraulic oil pressure can split the pump body open (click on image>>).
Atomic Engineers addressed both of these issues when designing an oil pump for performance Ford DOHC applications and subsequently our pumps are designed and tested to 7500 RPM and beyond.
Our #306751 and #306751-RB oil pumps features precision cut billet steel gears, high flow pressure bypass circuitry, fully blueprinted and clearanced and also include a hard anodized billet end plate to provide thrust wear resistance. #306750 Billet oil pump gears suit Ford Barra BA-on 6 cyl #306751 Oil pump suit Ford Barra BA-on 6 cyl DOHC engine
