hard or soft copper line for a valley oil gallery bypass line?
The very FIRST modification MUST be stopping oil leaks at the lifters. Or at least stopping 95% of the leaking. If you don't do that there is nothing else you do will help, with the exception of getting the suction side of the pump the very best you can.
Wrong! The first goal is to stop feeding the drivers side lifters off of number 1 main.
No matter if you do the tubing of the drivers
side galley or the crossover. Both mods require a set screw at the front of the galley
Or in the bearing saddle to stop the flow to the lifters. That set screw is what stops the majority of the velocity on the galley. But then, you must run the crossover to the drivers side to resupply number one main
so that it has proper pressure. If you front oil the galley, no velocity at all, even better, completely forcing the oil to mains. Ideally you have the rear of the galley feeding 4&3 main and the front feeding 1&2. No way there is no flow, no way. You can’t use one galley to feed every part of the engine. Use two. You keep saying the tube does nothing and keep leaving out the set screw. Incidentally the crossover and the tubing of the block methods were both developed by Chrysler. One for lifters that need pressurized oil and one if you only need splash oiling.
Both methods are mentioned and approve in that old performance book.
Why do you think those old fully grooved camshafts used to fail 2&4 main.
They created at pressure drop at those bearings trying to feed the rockers.
I spoke with comp cams about this a few years ago because I had that failure happen to me. 40 runs and 2&4 main had lost there crush. Comp told me the have not made those grooved cams for many many years now. If you rotate the cam bearing like in the stroker small block book, you never have that issue and all 4 mains oil identically at full volume and pressure.
Hydraulic lifters or pushrod oiling are not the only reason to send some oil to the lifters. I am using the comp cams bushed axle
Lifters. The bushing require some pressurized oil to live. I have a .030 feed hole in each bushing, but no pushrod oiling.
