Thread: 454 lack of oil on valve train - Suggestions

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News- After banging on the pan, he achieved 1/2" clearance. Drill motor will now pump more oil to lifters. Working one side this morning and all but one lifter is producing a slow drip at the rockers. Took that lifter apart and cleaned it, no improvement. Substituted lifter and same result. Removing lifter and inserting finger, he can feel pressure in the oil line. Questions: With a drill running the pump, is a slow drip as good as it needs? Can the lifter bores be worn enough to let oil pass by? They do not appear to rock in the bore or have noticable side to side movement.

Jerry, using 15w-40 oil and running temp of 180.

Roger, block was hot tanked, bored, and cam bearings installed by best shop in town. It was assembled and sat for a year.

Shine, the lifters without push rods will produce a small slow puddle when running on drill power. It appears that oil will readly appear in the bores without a lifter installed. You can put your finger against the oil exit and feel pressure with the remainder of the lifters installed.

Originally Posted by Scooting

Roger, block was hot tanked, bored, and cam bearings installed by best shop in town. It was assembled and sat for a year.

If that's the case it's sounding more like a plug was left out that's letting the oil intended for the upper end bypass those passages. I'd go back to the assembly process and double check all oil galley plugs. I can't add anything of value here, so I'm done.