Video: BRZ/GR86 FA24 Oil Pressure Loss Demonstration
Here is an interesting test showing oil pressure drops in the newest generation of Subaru BRZ/Toyota GR86 with the newer FA24 engine. On a racetrack, using street tires, oil pressure was found to drop to as low as 20 psi at high rpm in right-hand turns. All of the cars tested were using 5W-30 oil and aftermarket oil coolers.
The oil pickup on these newer engines is off-center, which seems to be why the issue is only observed in right-hand corners. The high-flow oil pumps in these engines probably exacerbate the issue by lowering the sump level at high rpm. More testing is planned with baffles installed in the oil pan.
Here is an interesting test showing oil pressure drops in the newest generation of Subaru BRZ/Toyota GR86 with the newer FA24 engine. On a racetrack, using street tires, oil pressure was found to drop to as low as 20 psi at high rpm in right-hand turns. All of the cars tested were using 5W-30 oil and aftermarket oil coolers.
The oil pickup on these newer engines is off-center, which seems to be why the issue is only observed in right-hand corners. The high-flow oil pumps in these engines probably exacerbate the issue by lowering the sump level at high rpm. More testing is planned with baffles installed in the oil pan.
