Roller Rockers 1.5 vs 1.6

PRH said
You’re missing the point completely

I’ll help the thought process.......
The xe268 cam has an lsa of 110.
Let’s say you install it at 106.

Where are the crank/pistons when the valve is at full lift?

About half way down the cylinder.
I check v to p clearance at least 15° on either side of TDC, for intake and exhaust....