In a message dated 4/28/2006 8:08:03 P.M. Eastern Daylight Time,
russell.duffy@gmail.com writes:
I dropped the pan
today and there were a bunch of gold flakes in the pan. Not a huge amount
overall but if I sloshed things into a corner it looked significant. So,
pondering my next step.
Remove the engine and return it to the builder with all performance data up
to the loss of pressure. I would insist on being present for the disassembly.
I talked to the engine builder for a National championship car about why
they oiled both ends of the crank. They had lost the front rotor bearing on
several occasions. They found a coaxial sleeve to fit over the crank nose, and
ran the engine on the dyno at full power. The oil pressure in the crank with the
oil pressure gage reading 75 pounds, was 5 pounds.
So they began oiling the front main bearing with its own hose. Also jacked
up the oil pressure to 100 PSI. It is probable that many builders found this
same piece of data over the years.
When oil pressure drops below 50 pounds, what is the pressure in the crank,
and how much do you get back from the centrifugal load on the oil column?
Once the engine is showing metal it has to come out. I would expect a free
rebuild with so few hours.
Lynn E. Hanover