The thing that jumped out at me is the injection timing advance range is [b]25 degrees[/b] if I read it right, WOW
I'm guessing that varies by application, 25 degrees is probably for a lil' v-dub engine that hits 5000 RPM. After reading this paper I finally have a pretty clear understanding how the mechanical advance works, and I bet someone could modify it so you could extend the throw of the timing advance piston for greater timing range, and mess with the spring to get the ideal curve. That way those running governor springs could have timing continue to advance further as RPM rises above the original governor RPM.
Looks like the KSB advance is about 5 degrees at lower RPM.
Also it mentioned an atmospheric-based fuel control for reduced fueling at higher elevations, wonder if this is on the Cummins application?
Vaughn
