Very noisy engine

Posted by Sprunghub on Jul 25, 2014; 5:35am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Very-noisy-engine-tp4052710.html

Yes I know they are naturally thus but this one sounds awful, clattering and rasping yet goes like the clappers, not the usual  noise that goes away when clutch pulled in (had one back in 1974 thus)  suspect timing chain, though someone mentioned "bob weights"?  what's  the ££££#s to sort out the former?