Help! Newly renovated engine got stuck while cranking it...

TrailBeast said
Have either of you guys seen a 2 stroke that seized up?
Burns those rings and piston right to the cylinder wall.
It's possible that if it was a fresh bore new pistons and rings, that flooding it (He said that) and blowing the cyl out with air (Said that too)therefore washing the oil of the cyclinders and then turning by hand and with the starter to prime the oil pump it just lightly siezed.

Right?

The bearings apparently had oil from priming, the cylinders didn't.
This is my school of thought on it from thr OP's description.

very possible. the last motor i saw with a bearing issue would turn, then barely turn , then not at all. im not saying this is necessarily the problem, just one observation ive had.

Originally Posted by Tocca
Question though, why remove rockers? To remove even more compression than what was removed when uninstalling spark plugs?

because that will relieve any top end stress and avoid any valve to piston contact (where applicable )if it is out of time. plus you wont bend anything if it is. i watched a guy spin around a 440 with a cheater bar that was out of time, and right before our eyes we watched the pushrods bend.

with all of that out of the way, there is no reason this engine should not spin freely. of course unless theres a bad bearing. the only thing outside of the bottom end rotating by itself without any resistance is going to be the timing chain to the cam, and the oil pump / distributor drive. just for kicks, put it neutral