Can anybody shed any light on an oil pressure problem I have with the IO 360 in my RV-8 ?
After initial start the pressure climbs within a few seconds to 50 psi - and it stays there !
Warming the engine to 90F and choosing any rpm from minimum (650rpm) to about 2200 rpm makes no difference to the pressure.
We've fitted a known correct dial gauge directly to the engine to eliminate gauging problems.
We've changed the spin-on filter, pulled the oil screen and cleaned it, thoroughly rinsed out the Raven inverted oil valve, reservoir and all the hoses.
We've had the relief valve in and out several times and it looks fine.
By backing the relief valve off we can reduce the pressure to around 35 psi and by screwing it right in we can get 60 psi. But, once selected the pressure remains constant at all revs.
We're finding it difficult to get the oil temp. any higher as the OAT is only about 4C and we have the cowls off to enable the dial gauge to be seen from inside the aircraft.
Anyone any ideas ? Barry G
After initial start the pressure climbs within a few seconds to 50 psi - and it stays there !
Warming the engine to 90F and choosing any rpm from minimum (650rpm) to about 2200 rpm makes no difference to the pressure.
We've fitted a known correct dial gauge directly to the engine to eliminate gauging problems.
We've changed the spin-on filter, pulled the oil screen and cleaned it, thoroughly rinsed out the Raven inverted oil valve, reservoir and all the hoses.
We've had the relief valve in and out several times and it looks fine.
By backing the relief valve off we can reduce the pressure to around 35 psi and by screwing it right in we can get 60 psi. But, once selected the pressure remains constant at all revs.
We're finding it difficult to get the oil temp. any higher as the OAT is only about 4C and we have the cowls off to enable the dial gauge to be seen from inside the aircraft.
Anyone any ideas ? Barry G