Brodix RRO 270, Comp Pro Magnum Geometry Issue
The problem: Roller contact is ~.050"-.060" from the exhaust side of the valve tip at 90 deg to the valve stem
Here are all the specs:
Brodix RRO 270 (purchased completely assembled)
1.88 Ex Valve 5.394" over all length (Brodix pn 81038)
2.25 Int Valve 5.218" over all length (Brodix pn 81040)
Springs 165#/385# installed at 1.910" (pn BT120121)
1.50" OD steel retainers with 11/32, 10 deg locks
7/16" studs, 2.130" tall measured from the head surface
Comp Ultra Pro Magnum Roller Rockers, 1.7:1 (Comp pn 1620-16).
NOTE: The tip of the push rod cup is about .500 higher than the center line of the trunnion/roller
I watch the Foxwell video on setting up rocker arm geometry and it is very straight forward and easy to follow. I did a preliminary check on my kitchen table and discovered two problems.
1) On the intake, with the rocker at 90 deg to the valve stem, I have maybe one full turn on the lock. I cannot achieve 90 deg on the exhaust without coming off the stud.
2) At 90 deg, the roller contact pattern is (close as I can measure) between .050"-.060" from the edge of the valve tip. This was measured on the intake. The exhaust looks like it would land in the same spot. I will try to load some pictures later today.
After doing some research, I found this is not unique to me and is in fact quite common for those that actually take the time to check and set it up properly. However, what I did not find is a lot of advice on how to fix it other than custom offset trunnion from Crower or the offset custom rocker from CStraub that they developed around 2016 (?). Both are significantly more $$.
There is a very long and informative post on the 3rd Gen website about this very problem. The solution, I assume, that most people go with is using a shorter push rod to center the contact pattern and sacrificing proper geometry. This is not direction I really want to go.
Thoughts or suggestions are most appreciated.
While I really like this rocker, I will probably order one each of two other recommended brand/model rocker and see of those are any better (Crane Gold, Harland Sharp)
1965 Chevy Biscayne
<removed> 454cid, "peanut ports", Voodoo 60201
<coming soon> 460cid, Brodix RRO 270, 229/241 Hydraulic Roller
TH400, 3.36 Stock Rearend