> Since this is a fresh rebuild did you pack the oil pump with some grease?
The pump on the TR3 hangs down into the oil, there is no need to prime it
But the comment about spinning the engine with the plugs out, and it taking
some time to build oil pressure, is right on target. After all, you've got
that great big filter canister to fill, and the pump only puts out a little
bit per revolution.
In theory you can take apart the distributor drive and turn the oil pump
with an electric drill until it fills all the passages, but IMO it's a lot
of work for no gain. As long as you've smeared everything with assembly
lube, it won't hurt at all to turn the engine with the starter, especially
with the plugs out.