27-07-2018, 08:10 AM
Ardent followers of the Forum should note that the camshaft referred to is not the standard pattern. For those the inlet opens tdc and the exh closes 15 deg after tdc, so the valves are equally open at 7.5 deg atdc. A manual for another make gives tolerance as +/- 3 deg. (Determining valve timing directly from positon at apparent full lift is not accurate.)