jdeas
Well Known Member
I am witnessing oil pressure variation from warm to hot that exceed the variation seen on other like engines around my airport.
IO-360-B1B
Looking at the range 130F/89psi to 210F/68psi @ 2500rpm (hot idle 48psi)
This engine only has 300hrs smoh but was pickled for 12 years before I got it. Within a year I had to externally reseal the case halves and replaced the front seal as all the gaskets started to fail after putting it in service. Vans standard oil cooler and new hoses were installed and the oil temperatures in summer normally run around 200F.
Looking for the most likely place to start. Oil cooler/Vernatherm, leaking oil relief seat, oil pump or ignore as normal operation?
Recently I have seen several post about the relief valve seat. Does anyone have a procedure beyond visual inspection? I have also seen a few post about the oil pump gasket failure yet I don?t see a gasket called out. The oil pump AD was done when it was pickled but was not run until 12 years later.
IO-360-B1B
Looking at the range 130F/89psi to 210F/68psi @ 2500rpm (hot idle 48psi)
This engine only has 300hrs smoh but was pickled for 12 years before I got it. Within a year I had to externally reseal the case halves and replaced the front seal as all the gaskets started to fail after putting it in service. Vans standard oil cooler and new hoses were installed and the oil temperatures in summer normally run around 200F.
Looking for the most likely place to start. Oil cooler/Vernatherm, leaking oil relief seat, oil pump or ignore as normal operation?
Recently I have seen several post about the relief valve seat. Does anyone have a procedure beyond visual inspection? I have also seen a few post about the oil pump gasket failure yet I don?t see a gasket called out. The oil pump AD was done when it was pickled but was not run until 12 years later.