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Here's one made from an old dist. 1/2" drill is recommended
I made the same tool 40 years ago. Use it every time I build a new motor.
I cut a hack saw blade width groove in the shaft on the top lined up with the same blade on the bottom of the distributor that goes into the oil pump. I use a screw driver in the top groove to line the pump up so the distributor (positioned at #1 cylinder) falls right into place.
Nobody mentioned this yet, and please don't get offended. But is there oil in it? Sometimes the excitement of a new engine has us overlooking the basics.
I just use my cordless 18V dewalt and a tool I bought at Autozone. It takes about 30 seconds or so of spinning the drill before oil starts moving. Is the engine in the car? The reason I ask is because the oil pressure sending hole will have to be plugged or else you will throw oil all over yourself and the engine. I did that once when I forgot to plug it.
Hmmm that number doesn't come up so I'm not sure what primer you have.
If it doesnt have the sleeve to tie the 2 sides together you wont be able to get the pressure up.
oil sending unit hole is plugged. I've had my 1/2 in drill (@500 rpm) running for 2-3 min. and no oil visible at the rocker arms. I think I filled the oil filter before I put it on. Shouldn't I see oil coming out around the rocker arm when I look in the oil filler hole. The valve covers are on the engine if that makes any difference.