Join Date: Apr 2010
Ferrari Life Posts: 2,197
Ferrari Cam Timing Methods?
Mark or anyone who has played with Ferrari's cams & cam timing, have you ever set the cam timing using the "lobe center" method in lieu of the "lift at TDC" method?
On a new engine, I prefer setting cam timing by the valve opening & closing @ 0.050" lift method, however Ferrari doesn't publish how much lift they use to define their IO/IC and EO/EC events, and if they did, it would still have to be adjusted for wear. And IMO, the lift @ TDC method doesn't account for wear, either.
So if maximum lift of 9.0mm should be at 110 degrees ATDC (for example), I'd measure the degrees at 8.0mm of lift on both ramps and split the difference for the lobe centers and adjust to that, which, I would hope would be as or more accurate for a worn engine than the single point of lift @ TDC method.
'99 550, Rosso Corsa / Nero, S/N:114654, Assy: 31836, Engine: 52084
High mileage, low compression, and missing on a few cylinders.....just like my cars.
Maranello Skunkworks Team Member