Do you guys go by the old adage of a minimum of
"5psi/1000rpm" saying? That's what we used to say
when we drove Triumphs. (Please pardon the French.)
I think you are exactly right when you state that
pressure is just a surrogate for flow rate through the
bearings. That is the real measure and I like to
think in terms of bearing cooling more so than
lubrication.
My Italian car idles at 60psi and operates anything
off idle at 90psi! It also has a fire pump for an oil
pump using a dry sump design with twin scavenger pumps
running in the sump. The actual lines to/from the
high pressure pump and oil cooler are steel jacketed
lines about 1-3/8" OD. Lubrication and bearing
cooling are serious concerns as these 3.0 liter V8
engines can run at 7700rpm red-line all day long - and
do!
Fun thread. Thanks to all.
rick
various cars
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