08-02-2018, 10:48 AM
From your photos your pistons don't look very old ?
I'm not a fan of the old fashioned split skirt 4 ring pistons and for the cost fitted a more modern design.High silicone pistons expand very little and don't need the split skirts.
Have you asked your reconditioner for advice on the oil burning issue ? I would think if its burning oil to that degree it will never be very good.
If I were using those pistons I would fit the oil baffles.The oil pressure relief valve isn't adjustable and in a splash feed engine will only open when the oil is cold and engine revving.
I would be concerned if I was getting 15 psi hot,perhaps a blocked jet?
Have you tried taking the oil filler cap off when running to see how much back pressure/blow by there is ? Maybe the crankcase pressure is pushing oil up the bores.
I'm not a fan of the old fashioned split skirt 4 ring pistons and for the cost fitted a more modern design.High silicone pistons expand very little and don't need the split skirts.
Have you asked your reconditioner for advice on the oil burning issue ? I would think if its burning oil to that degree it will never be very good.
If I were using those pistons I would fit the oil baffles.The oil pressure relief valve isn't adjustable and in a splash feed engine will only open when the oil is cold and engine revving.
I would be concerned if I was getting 15 psi hot,perhaps a blocked jet?
Have you tried taking the oil filler cap off when running to see how much back pressure/blow by there is ? Maybe the crankcase pressure is pushing oil up the bores.