So your advertised duration of the intake lobe is 255*, intake centrline is 106*.
So split the duration and it will give you 127.5*. So the advertised intake opening and closing will be 127.5* either side of the installed centreline.
Intake closing will be 106 + 127.5 = 233.5* after TDC or 53.5* ABDC. (Round up to 54*)
