Engine has been sitting for a long time, did a compression test which showed good, clean oil etc so I cleaned it up, painted, new water pump, hoses, carb job, new oil/filter etc. Started it today, she purred like a kitten, the oil pressure came up and while I was excited watching it run I notice a large pool of oil on the floor getting bigger, oil filter puffed up like a poison toad and oil blowing by the seal. I know oil is flowing up to the head as the new rear line I installed was leaking fresh oil at the fittings on both ends, this thing was really putting out the pressure. No oil came out the breather tube near the dip stick. Looking for advice on what has happened and a fix hopefully.

Than you

Mark