I didn't verify the true coilbind for each, as i recall i went to about .070 by the book.
There is no easy way to pressure oil this deal. Jesels are paired on a single solid 5/8 od shaft for each cylinder.

So are my T&D's. Oil goes from the pushrod, through the adjuster, through the rocker, through the bearing.
Doug

I guess one question you could ask yourself is....... how much power would I be willing to lose to be able to put 200 passes on the motor and be reasonably sure its not going to break/damage something in the valvetrain?

If the answer is “0”, then you’ll have to keep trying to sort through your issues.

But if the number is something more like 25-50hp, then I think you could scale back pretty far on the cam/spring package and be in that area.

As an example, one of my customers had a 770hp 557 with a .660 roller, 1.5 Crane golds, springs that were 240/550, on SR heads.

After freshening the heads multiple times, when the entire valvetrain had about 1600 passes on it(and everything still looked fine, springs still tested good, etc), I was finally able to get him to replace it all before something broke.

I have a 400 stroker motor, 4.300 stroke, with a set of 440-1 heads with a set of paired shaft Jesel 1.55 ratio not aluminum, (maybe chrome moly steel?) rocker arms. Jesel tech said they don't make any rocker arm with any other material than aluminmum Mine are not aluminum
I'm using both pushrod and spray bar oiling in it.
It has a custom grind Ultradyne solid roller cam with right at .770 net lift and either 275 Lbs on the seats with 750 lbs. open or 390 lbs. on the seats with 910 lbs. opened I did set them up with between .060 to .080 from coil bind on all the springs My notes show both pressures so I will have to check that and write down the correct numbers on the build sheet
This is my first motor with a paired shaft rocker arm system, I haven't ran it yet but it will go in the bracket car this winter I'm hoping it is not a part breaker

A gentleman that owns the business CHE in cali was kind enough to talk to me about my problem. He developed a proprietary bronze bushing alloy that would stand up to the punishment of bushed, Hemi SS rocker arms, hi hp LS rockers, Isky EZ roll bushings, etc. He uses bar stock to make parts like i would need to bush my Jesel rockers. He mentioned Jesel wasn't interested, even though he has been contacted by Jesel customers that have the same issue as me.
The problem is pressure on the bearing cage,plus a twisting load on a bearing not designed for it. The force from the pushrod is offset outside of the bearings. Just like all materials, all the parts under load compress, maybe ever so slightly, but they have to, or they shatter. Soooo, apply enough shock load, and eventually anything will deform enough to put too much load on one edge, and starts to fail. I see the bearings start to gall the shaft on the outer edge, confirming the twisting diagnosis.
He said i was on the right track using bronze washers between the rockers and the rocker bar to eliminate side loading on the offset intake needle bearing cages.
As for bushings, the special alloy with a wide threaded grove in it to allow oil to enter would work. The problem is, he is swamped with work and a short run of bushings would be quite expensive. So that takes me back to having to use the needle bearings. He did suggest i do two things. Try and fit a wider bearing on the pushrod side of the intake rocker, and groove the washer to allow oil flow to the bearings.
I really appreciate the time he took to help me out. I learned from someone that had solved my very problem exactly what is going on, and what would be needed to step up to a more durable rocker capable of taking more punishment than the rockers can handle as built.
Since a lot of guys are not having the same issues, i pont the finger at having used some brutal cam lobes, maybe not a big enough pushrod, and lifters not up to the loads i threw at them.
The changes since the majority of failures are; new inverted flank cam from Mike Jones. It has very long lash ramps to minimize shock load. EZ roll Isky bushed lifters. 7/16 minimum diameter tool steel pushrods. PAC 1228 springs which provide the same loads as the 948 comps but weigh less and have a higher frequency. Since i don't race a lot, if i can get 75 to 100 runs out of this setup, i will be somewhat OK with running the needle bearings and washer combo. I have been looking for info on this problem for some time, and really appreciate it when someone takes time away from thier swamped business to talk to me!