I recently had an engine seizure at 35mph locking back wheel, on stripping engine found that the 2 piece timing side bush had seized to the crank. All other components ok ie big ends/rings/bore/drive side bearing/ oil pump all good, so what caused it? It was fitted with a anti wet sump valve which i removed stripped it, but it seemed ok, (have not refitted it) the two piece timing bush had turned snapping the retaining peg causing oil way to block, but could this have happened when it seized?....Anyway i took the crank assembly to an engine builder who fitted a new solid bronze bush and line reamed it also set end float.
I assembled engine and it seems much too tight, have a job to depress kickstart and engine will start up for 1 second before stopping because its tight.....help.
baza 57.