Hey Jim! I'm assuming this pic has the ICL about where you want it to be? If so, Jesel hasn't changed the indexing on the cam pulley. Every Jesel I have seen true "0" shows-up retarding, if that makes sense!?
No, that was the starting point for today's ton of measurements. Two degrees retarded is the last place I expect to leave it, so I start there and change it for all my measurements.
Part 5 – Cam Mapping. Build NotesThis morning I completed mapping the cam lobe events at three positions. Every mark on the Jesel did result in 2 crankshaft degrees change in timing (within measurement tolerance).
The cam card recommends 111 deg intake, 115 deg exhaust (113 LSA). I call that 2 degrees actual advance. When I set the Jesel marks to +2 advanced, this is what I measured.
It might be more information than most people want... Many should just look at the measurements at 0.050" lobe lift.
The way I look at it and the way this cam is ground, to get the intake lobe centerline at 113 ATC ("true zero"), the Jesel would be set at 1/4 deg retarded.
When I did these measurements with the Jesel at the zero mark, I came up with the intake lobe centerline 112.75 ATC (at 0.050" tappet lift).
I might set it at +4 this afternoon, just for more piston to valve information. But I don't plan to run it there based on these measurements.
