the oil pressure dead cold, even cranked sparks out , hits 55. (this is the relief valve opening)
some run a separate oil system for Turbo's so when you shut the engine down, it runs for 5min, to prevent bearing coking. and other isssues... engine oil contam.....
the low figure, of 10 PSI, is only with wrong oil , or loose bearings. at 800 rpm, 10w-30. (but oil temp is key here. as is engine temp...)
the oil pump has relief valve. on the left side. this sets upper limit, (a spring and piston valve)
the spec sheet lists oil pressure at 40 PSI, hot at 4000 rpm. (this is based on clearance of mains,rods, and oil viscosity/temp.)
the relief valve is another matter, (mostly for very cold starts ups) 55psi, is typical. my guess, is 50 to 60 by design.
2 choices, seperate, oil system for turbo
or
a line pressure reg to the turbo.
some run a separate oil system for Turbo's so when you shut the engine down, it runs for 5min, to prevent bearing coking. and other isssues... engine oil contam.....
the low figure, of 10 PSI, is only with wrong oil , or loose bearings. at 800 rpm, 10w-30. (but oil temp is key here. as is engine temp...)
the oil pump has relief valve. on the left side. this sets upper limit, (a spring and piston valve)
the spec sheet lists oil pressure at 40 PSI, hot at 4000 rpm. (this is based on clearance of mains,rods, and oil viscosity/temp.)
the relief valve is another matter, (mostly for very cold starts ups) 55psi, is typical. my guess, is 50 to 60 by design.
2 choices, seperate, oil system for turbo
or
a line pressure reg to the turbo.
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