602 head gasket change then smoking

[dieselbenz1]

I had found a head at PnP which cleaned up nicely. I had it checked for flatness, replaced several broken studs, lapped valves and installed new stem seals. I placed this on my engine once complete it smoked fairly hick white diesel smelling smoke. Checked for air in the fuel system, ran on an alternate fuel supply same smoke. Advanced timing smoke was lighter but still present. Total run time maybe n hour.

Was tired of this decided to move the car to be parked till spring started good still smoking reved the engine all smoke cleared and running just fine now. I seem to recall reading others who had replaced a head gasket to have smoke for a few hundred miles befor it cleared. I'm not understanding this unless it had something to do with lapping the valves. Oh ya new lifters sure make this engine quiet at 280 km.