This subject has probably already been visited in the past but does anybody know if the MK3 Commando 850 had hardened valve seats ?
Rebuilding my engine and want to know whether or not this needs doing or not for unleaded fuel.
.. commandos are fine on original seats. I wasted a lot of money having mine changed.
Sorry for the very late reply, with all thats going off i totally forgot i had asked the question.
Yes Ian alls commandos since 1972.