Quote:
Dell wrote:
hi jeff; at one point u said u were worried about tight bearing. do u know what the rods and mains are at and did u put in new cam bearings? the oil is going some place. if u have an extra .0005 on the mains u will loose a lot of pressure. the weight of the oil will effect the pressure to a point- the relief valve acts on pressure and if all the clearances are in the ball park i would shim the spring to get 40 lb's when driving
Dell, I don't recall the exact measurements off the top of my head, but I remember that 8 of the 9 mains were on the tight side of the spec, and one was towards the loose end of the spec. All the rod bearings were dead center of spec. The cam bearings are new, and were installed by the machine shop, but felt good when I installed the cam. I do remember that the Packard service manual states that the hydraulic lifter mechanisms are carefully matched to the lifter bodies at the factory and should not be mixed up. It's possible that the reproduction lifter mechanisms are a bit of a loose fit in the bodies, and I'm loosing some pressure there. They did seem a little loose to me when I put them in. There's so many places on this motor to loose a bit of pressure: nine mains, nine cam bearings, eight lifter bodies, plus I think the mains are fully grooved, which tends to drop your pressure a bit too. The oil pump really needs to move some oil to keep the pressure up.
As with everything else, the brake work is taking longer than expected, so I haven't had the chance to run the car again. I should be able to do that this afternoon.
Jeff
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