I got a set of Manley +.100 Ti retainers today and tried them. Bad news is they have the same 2.020 installed height as the Comp +0.050 retainers! (evidently the guys who design these things don't agree what standard is). Good news is that they have a different shape on the top so they clear the Jesel rocker arms. Not much clearance but at least I can see daylight.

I need to double check the clearance with full spring load and then I'll snap some pictures. Maybe this setup with the Manley retainers will work. If not, I'll keep trying parts until I find something that works.

I also figured out that if I mount up two of the spring removal tools on the same shaft the job goes a lot easier. Too bad Jesel doesn't sell the tool this way, it is a big time saver.

Here is a picture with the Manley +.100 retainers. Actually these Manley retainers are identical to the Comp +0.050 retainers except for the profile on the top part. They both provide an installed height of 2.020 inches when used with the +0.050 locks. The Comp retainers hit the Jesel rocker arms but these Manley retainers provide some clearance all around. It isn't a ton of clearance but it should be enough.

Andy,
i dont know if you covered this in an earlier post or not, but did you check to see how much difference there was in rocker ratio with the Jesel rockers between unloaded and loaded?

as for the .800+ lift requirement to make peak power at 6500......i guess my first response would be.....where did it make peak power before with the .650 lift flat tappet cam?

I've checked the lift numbers with the triple valve springs and there doesn't seem to be much lift lost in comparison to a checking spring. The Jesel's appear to be right on the 1.70 ratio.

Here is a picture of the final configuration of parts that I ended up with. Manley locks and Manley retainers did the trick. I ended up with 2.005 installed height and plenty of clearance for the rocker arms. I had to work my way thru a few hundred dollars worth of parts to find this combination but I guess that is good for the economy!

Just for reference, here is a picture that shows the parts used. PSI 1246 springs and the Manley retainers and locks.

Manley retainers 23640-16 will work with Manley 221424-16 springs and the Manley 13198 locks to provide a 2.00 installed height setup that is good for 0.850 lift roller cams. Manley says the 424 spring is good for .880 lift but that seems to be pushing it. The Jesel rocker arm geometry is good up to a little over .900 lift and then it starts to run off the side of the valve. I'm not sure what rocker arms a guy would use if they wanted to run more lift that that. Guess that is a different problem to solve some day.