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magnum/non-magnum push-rod question:
Hey again everybody. Just wondering if there would be and benefit or harm to my motor if I were to use 89-91 hydraulic pushrods in my 88´ 318. The 89-91´s are .04 longer than the 88´ push rods and......the 89-91´s have oil holes in them where as the 88´s are solid.
Reason being.......I have a new Crane Cams Hydraulic roller cam (specs: 284/292 .513/.528 112 center) and new Autozone (cheapies) solid ball end pushrods and new Melling Hydraulic roller lifters, and they will not pump up or something. There is a never ending tapping. I pulled the valve covers and removed the rockers and indiviually pushed on each pushrod and a few have a springyness to them the others are fine. I am running 20 psi oil pressure at idle, and 45 at 2000 rpm., so i don´t see what the deal is. I was just wondering if I used 89-91 pushrods with the hole in them will this solve my lifter pump up problem? Hope someone can help me out, I don´t wanna wipe out a lifter seeings how they´re 12.95 each! 220 for a set! Thanks for your time. |
#2
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Those pushrods might not let the lifter "show" its oil port, not letting any oil in to pump them up. Maybe pull the lifters out and pump/prime them up in oil before installing them. May have to go with shorter pushrods. I am suprised Crane didnt mention a smaller base circle on that cam. Course, if they did you still would need longer pushrods..???
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