Bill...
45@3k is a little on the low side on a hot
motor according to the book...you oughta be looking at 60@3k on a 948/1098 or a
min of 55@3k on a 1275, assuming correct weight petroleum type oil for season.
The other figures mentioned are "good",
so.....
a lower than factory spec hot running oil pressure reading...(ass-u-me)ing the
gauge
is correct....and bearing in mind the foregoing.....is often associated with
worn bearings.
HOWEVER.....it can also be the CAUSE of increased bearing wear by way of a worn
oil pump or sticking oil pressure reliefe valve. But considering the 20psi
"hot" oil pressure reading at idle (excellent), I'm leaning more toward a worn
pump.
Cap'n Bob
'60 Frog
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