I have a Merlin II block on a fresh rebuild that is getting no oil to the right side top end. I have the correct priming tool with collar and primed it before I put it in the car and thought I was sure I had oil coming out of both sides but now after it has run 2 times around 2-3 minutes each time it has no oil on the even side. At idle cold it had around 65lbs and went down to 48 after getting warm, it has lucas 30wt break in oil. I have tried to re-prime (36 lbs) while turning the crank with no luck so I removed the engine to inspect the gallery plugs and it has the correct restrictor plugs in the back for a merlin block and the front plugs look fine but 2 have very small holes which I read was to help in oiling the timing gear. I do have an anti-cavitation pump which I read can give you a low pressure at idle but mine seems to be OK, I also removed the pushrods and they did have oil on the end so the lifter was getting oil. I also could blow through all of them and some had oil in the pushrod but none got to the top. Any ideas where I can be losing pressure?
thanks