29-11-2020, 06:03 PM
I would suggest that you fit an adjustable oil pressure relief valve, they are available to fit in the OEM position but will require the engine to be removed and oil pressure set up with the engine bench tested. A stronger spring or a bit of packing behind the spring should up the pressure.
I have found that the camshaft oilways and bushes will lose a lot of pressure. I have fitted restrictors to reduce the oil volume to the camshaft. the original drillings were for 5/10 psi
My pressure fed engine drops down down to 25 PSI hot tickover and runs at 60 PSI it has a Pigsty oil set up and an Allen Crank.
As mentioned a straight 30 or 40 oil would help.
I have found that the camshaft oilways and bushes will lose a lot of pressure. I have fitted restrictors to reduce the oil volume to the camshaft. the original drillings were for 5/10 psi
My pressure fed engine drops down down to 25 PSI hot tickover and runs at 60 PSI it has a Pigsty oil set up and an Allen Crank.
As mentioned a straight 30 or 40 oil would help.