Make a strap tied to top of a main cap to stop vibration,

Please keep updating this so I know what to do on mine... I am not going to use an external line so whatever solution you find will be very helpful.

I really wanted 4.5 stroke to keep the dome size down.

for sure. i see about getting some pics this weekend.

After clearancing the pan rail a bit for the tube, I have .055” between the tube and the rod shoulder and .040 between the adaptor and the rod. A bit more grinding on the adaptor and I’ll have it.

Well... it looks like my 572 just turned into a 540. But good to know before buying the rotating assy... Bummer for me, but thank you for sharing...

Those clearances are wider than what I have race with in the past

x2

Start it up and let the rod make its own clearance.

if the rod touches that your going to have lot more than that that it going to touch. The only way its touching that at .020-.060, something is coming apart.

It will save you some trouble.

Yep, just a bit more grinding and a tapered tap to get the tube to screw in all the way. I think i will use a thin paper gasket under the adaptor, glued on with Indianhead . That should keep it in place. Anyone know the torque spec on the adaptor screws? Thanks to 440Jim, it will be internal oiled.

Just what i hoped to hear cab. Thanks

From my build notes, I used Loctite on the ¼ allen head bolts (socket head cap screws) and torqued to 100 lb-in.
572 B1 org Part 5 - Build Notes [block oil pickup hole]

No more than 120 lb-in (10 lb-ft).