Quote: Maybe some of you guys should look at that guys kit, it moves the shaft up to correct geometry and back to center the contact patch, the only compromise I see is the PR geometry will get worse, not a big deal on a BB but a SB is already bad. Of course a W2 is worstest yet and they can rev good so
The CAD drawings I've done say the shaft has to move down to correct geometry with a high lift cam. Moving the shaft up makes things worse on every simulation that I've run.
FWIW, my Stage VIs required raising the shafts to get the geometry straightened out + lash caps, along w/ test-fitting a variety of rocker arms to come up w/ a combination that actually worked correctly. From what I've heard, that wasn't typical for most Stage VIs, but it's what was required with my particular set.
I think the approach required depends on the application, the particular parts used, and the rocker geometry results (e.g. Jim Miller's Mid-Lift design vs. Jesel's theory) you're looking to achieve.
