I have a restored '48 panhead and have an extremely irritating problem. The rear pushrod tube has a bad oil leak which I cannot seem to stop. As background, in order to try to increase the oil pressure at idle, I have changed the oil pump on two separate occasions, 1st one being the original '48 pump, then a '49 pump, and now a '66 shovel iron pump with the chain oiler hole
plugged. While that has been resolved with the latest pump (tho not 100%), with each change the leak at the rear tube has gotten worse. It has a rare set (never seen another) of the early aluminum-style lifter blocks but in iron (not a converted hyd. lifter set). Running knucklehead-style lifters with built-in adjusters and alum. pushrods.
I have tried every pushrod gasket known to man, made sure the sealing surfaces are slick, stretched the spring in the tube even. Nothing seems to help.
I know there is a dam attached with a screw between some of the cooling fins on the head under the pan that was a dealer install, done to resolve some over-oiling issue, but I thought that was just to keep the oil from puddling around the guides.
Help.
Lonnie (again)
(This "Be a Man, Ride a Pan" thing is killing me).
plugged. While that has been resolved with the latest pump (tho not 100%), with each change the leak at the rear tube has gotten worse. It has a rare set (never seen another) of the early aluminum-style lifter blocks but in iron (not a converted hyd. lifter set). Running knucklehead-style lifters with built-in adjusters and alum. pushrods.
I have tried every pushrod gasket known to man, made sure the sealing surfaces are slick, stretched the spring in the tube even. Nothing seems to help.
I know there is a dam attached with a screw between some of the cooling fins on the head under the pan that was a dealer install, done to resolve some over-oiling issue, but I thought that was just to keep the oil from puddling around the guides.
Help.
Lonnie (again)
(This "Be a Man, Ride a Pan" thing is killing me).
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