[Formulajones]

Originally Posted by Shiny

Is in line with my guesses from measuring displacement of the rod... the max definitely exceeds the 16 degrees expected for a B1. Hopefully I get to find out if it's too much!

It'll depend on the engine in question and whether or not you dial in the initial and total to a level the engine performs well at.

Generally with most performance oriented engines, once I have initial where I want, and total is dialed in where it makes best power from dyno tuning, I find another 16 degrees from a vacuum can a bit much for today's pump gas.