:?:Hello, Yank here. I have a Honda 500cc single four cycle that has all the torque of a 500cc two cycle. I have a hunch that if I can learn of the camshaft timing of the old Matchless and emulate that timing on my Honda she may have produce a fair amout of low end torque. Can anyone help me with the Matchless valve timing specs? Intake BTDC, intake ABDC, exhaust BBDC, exhaust ATDC.