Posted by ljonny18 on URL: http://vintage-and-classic-hondas.81.s1.nabble.com/1983-CB750-DOHC-Build-tp4032204p4032528.html
At this point, seeing although I am this far (and the bike had a knocking noise coming from the engine when running) I thought it made send to go the whole hog and also check the bottom end of the motor to make sure there are not "bigger" issues related to the camshaft / connecting rods etc before I continue ... it's also pb best as the bike has 60,000km (40,000 miles) on the clock and it appears the the previous owner(s) did not look after it too well :(
Now I have hit a wall and cant continue until I get / make a tool to take this nut off: