445 oil reg spring
I blew a head gasket on my 445. Pulled engine and decided to do a complete overhaul. Engine looked really clean and tight, Lapped valves, honed and new rings, valve seals, normal stuff. Noticed oil pump reg spring did not contact the oil pump plate so the spring had no preload when reassembled. Spring Free length was in spec, but I ordered a new spring and ball. The spring is about 1/16 below the plate which baffles me I had no oil pressure issues before the head gasket blew. I’ve done a lot of bikes and other motors and compressors never saw a reg spring not have preload, same principle on most recip engines and compressors. I called local JD service dept two techs didn’t have a clue on this motor said just put it back in. I’d hate to put this in and have to pull it again. Just can’t see how this can build oil pressure with the relief ball not seated. Thought of shimming the spring enough to seat the relief ball but thought I’d throw it out there if anyone has an answer on this. The front housing where the ball seats looks perfect not wear is evident. Any help appreciated!!