My Honda 1980 Honda CB750 dohc cafe bike! Took about 1 1/2 yr to build. Bought it out of a junkyard for $200. Motor was seized, no seat, wiring fried, everything f@$%... Sooo... I bobbed the frame a little, rebuilt entire 750 engine from ground up with cb900 cams and carbs, new pistons, rings, seals, crank and rod bearings, cleaned tranny, found nos cylinder std. bore, new valves/springs/seals/lapped, timing chains, gaskets, clutch, stator, new factory wiring connectors, new fork seals, rear shocks, etc... Then for fun, I mounted a 2002 CBR swingarm and rear wheel to the back, with a couple of shock mounts welded on for that old school look. Forks came off a gl1000, old school steering damper, Vance & Hines Sidewinder header attached to a ti muffler. Gauges are killer Motogadget mini, for a clean look. Got a killer Power Arch ignition from Cycle X. Stainless brake lines....and much, much more. I just wanted to get it running originally, but it turned into a HUGE OBSESSION. Anyway, after two years and about $8 k, it runs incredible!!!!

Before you can reinstall all of the values, you need to 'lap' (also called grinding) the valves so they don't leak gases while the engine runs. This makes for good compression - and more power. Here I am spinning the valves in their seats with a slow drill - a special abrasive compound (kinda like liquid sandpaper) machines the valve and seats for a flush fit. Repeat three times per valve on sixteen valves = a lot of work! Working conditions in this photo? 37 degrees, raining, doors open entire day, worked from 10:30 a.m. to 6 p.m. Geez.