Honda 390 crankshaft replacement....HELP !!!

[mrbeggs432]

I recently switched out a crankshaft on Honda 390....reason being it was from a generator and had a tapered non-keyed shaft.

Things went good...I switched out without removing the head, piston or lifters.

stock crank...removed governor & oil sensor unit ...left the balancer in.....everything lined up puting the case back on.

Put oil in and tried rotating by hand...turned about 3/4 and it stops and you can hear a clunk...like its binding.

I know I have to break it back down but what should I be looking for ???

Please help

 

[Joe-405]

Can’t really see anything other than the timing gears are way off or the crank is wrong.

 

[Hellion]

Will the crank not move through an entire revolution? If not, I don't think you'll know until you take it apart.

You're going to have to rotate the crankshaft to look for interference--see what's hitting or binding. That's standard SOP for me before buttoning everything up.

 

[mckutzy]

Maybe a pushrod/lifter fell in...
As I understand.....Seems to be that if any referance points in the valve train change then it has to be relashed as that has moved and potentially offset the setting..... Ie the cam being removed...
So itll need to be relashed anyways???

 

[mrbeggs432]

ok...so even though I didn't remove the valves...they still need to be reset ? Also I did not put the flywheel back on yet...would that make a difference on rotating ?

---------- Post added at 08:58 AM ---------- Previous post was at 08:56 AM ----------

Will the crank not move through an entire revolution? If not, I don't think you'll know until you take it apart.

You're going to have to rotate the crankshaft to look for interference--see what's hitting or binding. That's standard SOP for me before buttoning everything up.

I spun the crank one or two rotations and peeked at the lifters n cam before closing it up