ford 9n thump when starting

splitter

New User
Hi I'm rebuilding an ford 9n. I'm 15 doing this as a winter project but winters over so its gotta live :). I put a new starter, rings, valves, rod bearings,manifold, muffler, entire eletrick system on it new carb to. I've got 95 lbs compression through the board. 3 weeks ago I had it running perfect, I put about 5 hours on it letting it Break in but I had only 15-20 lbs oil pressure. Come to find my oil pickup tube was loose so I replaced the tube, pulled the pump out but everything was tight so I put it back on. I only tightened main oil pump cap to 80 lbs. 90-100 seemed really tight for the old machine. Hand spinning the engine it doesn't hit anything. When I touch the starter it makes a thumping sound not like before. The oil pans off it now with it on bricks. Any idea what the problem is?[/quote]
 
As Roger say crank shaft hitting the oil pick up tube. With the pan off you should be able to look at it and have some one spin it over while your looking and watch for something hitting something
 

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