Posted by Jim L. in OR On 2013/7/24 0:09:30
Quote:
JW wrote:
duane.g - You are aware that the clearance between the valve stems and the lifters will need to be checked and adjusted, if necessary. A special tool is necessary to do this check. The valve stems are ground to give the proper clearance. This is necessary so that the lifter plunger is centered in its travel so that it will function properly, not too loose and cause noise and not too tight and cause the valve to remain off of its seat. This check is especially critical after the valve seats and valves have been resurfaced resulting in the valves being slightly lower in their places.
(o{}o)
Thank you JW! You have just solved a mystery on my 288cid '51 200 Deluxe! I believe it recieved a Service Engine transplant in '55 which means it has hydraulic lifters. It had noisey valve lifters when I got it and a complete valve job was done with a couple of new valves replacing burnt one. The Mystery was why when it was all put back together it had --- Noisy lifters! None of the valves were adjusted for with a OHV mindset, it was assumed that the hydraulic lifters would automatically take up any slack. If I read your post right, this simply isn't so.
We checked the oil pressure in the engine which was a constant 40 psi and all the lifters were getting the right pressure so what you posted has to be the solution.
I'm sorry I jumped in like this, duane.g but you can't imagine what this means to the puzzeled owner of a noisy but otherwise strong running and economical Packard with a smooth shifting Ultramatic!
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