My take on the oiling system crossover tube for the small block

Duane said
Jada forgot to post one other picture. Earlier in this thread replicar made a comment to Jadas about the crossover tube just oiling #1 main from both ends.
It seems to me that it is the crossover tube itself that gets all the attention
and some people are missing the full necessity of the modification.
People who tube or bush the passenger side of the block accept that the other requirement that goes with This is to also block or cut off the supply to the drivers side. The choice of where to block it is up to the builder, just as long as it gets blocked.
No one questions the effectiveness of this.
The crossover tube also requires the supply to the drivers side to be blocked on the passenger side as well. Look at the picture I have posted. #1 main is oiled in reverse. All the crossover tube is doing,
Is taking some of the surplus oil volume on the passenger side, routing it over to the drivers side, and oiling #1 main from the drivers side. With the exception of the leakage at the lifters, the crossover combined with the blocking plug at the end of the galley,
accomplishes the same thing but a different way. As Guitar Jones said. The crossover method gives the option of wet lifter bores while reinforcing the oil to the main and rod bearings. It's just an optional way.
The plug at the end of the galley cuts off the supply to drivers side to stop the oil feed to the drivers side lifters being taken from number one main. Even front oiling requires the same thing. The plug kills the velocity.
Earlier today I was rereading the Sanborn oiling thread and he mentioned that he ran a crossover line to use pushrod oiling. In my case I am using roller lifters with no needle bearings. They are bushed roller lifters with edm oil feed passages directly to the axles. They need some oil.
The Chevy has a separate oil galley for each bank of lifters and a 3rd to feed the cam bearings and main/rods. No one bearing is asked to feed more than one other bearing. It does not need a crossover for that reason.
On the Chrysler number 1 main is asked to feed 9 other leaks.
These 9 leaks combined with a high volume/pressure pump causes the velocity.
Why else would all three of these modifications require blocking the end of the galley with a plug. As usual just mho.
The oil timing is a different issue.

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No Duane, it's all the SAME issue and it gets clouded by all the other crap about this leak and that oil feed. The main bearings NEVER (well almost never...I've seen guys who can wreck anything) run out of oil. When they do, the issue is somewhere else. Not enough oil. I've seen the oil pump drive shear off and that killed all the bearings. I've seen lots of stuff like that. When you are killing Rod bearings and the mains have oil, you do NOT have an oil feed issue. That's oil timing.

And yes, the Chevrolet system is so close to the Chrysler it's not funny. The lifters (in the OE production stuff) for the Chevy get oil first, just like the Chrysler. Again, it's all about oil timing to the rods. You can argue all you want, but when the main bearings get oil and the rods don't, how does the crossover fix that? How does adding oil at the front fix it? I keep asking that question and all I hear is Chrysler approved the crossover for 10k and dammit that's right. It's not. It's wrong. It does nothing and I've personally broken the parts to prove it.

Again, under 8k there is no reason to do other than control the oil to the lifters by using a tube or bushing the lifter bores. You can do that with hydraulic lifters and drill small holes in the tube or bushing and just restrict the oil to the drivers side right at the feed at the number 1 main. So the discussion is a ridiculous one if we are talking about engines that are turning less than 8k. They will oil if done correctly.

You can't fix what you don't acknowledge. And you can't fix what you won't accept. Rod bearing oiling is a timing issue. The engineers didn't guess where the feed holes should be. Except Chrysler. And Buick. And Olds. And Pontiac. And who has Rod bearing issues? All the above. It's about oil timing and nothing else.

If you can't keep the rods in under 8k you need to look at the basics of oil control. Not a crossover. It's a waste of time and I hope no one ever does another one.