I managed to get the rocker boxes re-assembled today. Lots of little pieces that have to fit just so in order to let the valves bring fresh air and fuel in and get the exhaust out!! Today most bikes (and autos) have done away with all this weight and clutter by running the cam directly over the valves. Push rod motors, like this one, are limited on the RPM’s they can turn by what you see in these pics….

1973 Triumph
TR5T Trophy Trail

1973 Triumph
TR5T Trophy Trail

1973 Triumph
TR5T Trophy Trail

1973 Triumph
TR5T Trophy Trail