LADIES AND GENTLEMEN ........................
DRUM ROLL PLEASE............................
And the winner is.........
4onthefloor Is there any chance you are sucking air somewhere in the oil pickup? This is what causes lifter tick in 235's- air gets into the oil pump and blows it into the lifters making them leak down. You might want to drop the pan and see how well the oil pickup is working.
Can you believe it, all this time I have been looking for problems on the top end when it was actually originating from the bottom. Sure enough, I drop the pan, and the pick up was sitting in the bottom of it.
I always weld the pickup to the pump, but the weld apparently broke on one of my muddin trips. I must have bottomed the truck out at some point because the pan was slightly dented on the bottom. I put the pickup back in and lined up the broken weld. When I tried to put the pan back on, sure enough it was about a 1/2" shy of the block which is about the depth of the dent. Bang the pan back out, weld the pickup back on with my handy dandy miller 250 and voila! Any question why I have since added a skidplate. Another big ol redneck truck back on the road!
The only difference That I notice now is that the oil pressure hits 60 lbs as soon as its started. Normally at startup it would be at 30 lbs and as rpms picked up then it would hit 60. This seemed fine because you only need 7 lbs/ 1000 rpms so I thought I was fine.
Well that explains it, at low rpm the oil is still pooled around the pump and as rpms increase, the pump was cavitating so the lifters were actually starving. :rolleyes:
I really want to thank everyone for your help and ideas!!!!!!!!!!!!!
But it might have been more fun to shoot it
