[Larzfromarz]

Hey guys,
I need your help regarding the top overhaul (what we call it in the airplane biz), I'm really bummed and finally up against the wall.
Here is the story;
1966 Ca160, initial problem broken rings and blowby on the right cylinder. Replaced the piston and rings (all std size) clean painted and serviced all parts.
Reassembled, timed, valves adjusted, no obvious problems, gassed up and ready to start. Hit the button and she chuggs right away great. Hit the button again a few turns and "pink". Stop everything! Inspected externally to find nothing unusual. Removed a tappet cover and hit the button again. The engine turns freely and is making compression (pistons moving and valves closed) at the tailpipe. The valves however aren't moving, hmmmmm. Remove the breaker cover and hit the button- cam isn't turning. Seems like cam chain. Remove engine for disassembly of top end. Upon disassembly sure enough the cam chain masterlink retainer is broken. Fortunately ALL pieces are recovered with a magnet from the sump- don't have split the case. Reassemble, re-time, re-adjust valves, reinstall. Battery, gas, hit the button for three or four turns of the starter and "PINK" again. Left the tappet cover off this time (breaker cover too). Valves were moving (at first) until the pink.