Swapped 2010 Prius with Gen 4 - locked engine?

Well I would have thought the mechanic doing the install would at least have put a I think it's a 19 mm wrench or socket on the crankshaft pulley The front of the motor that sticks out the right side of the car towards that way and turn the engine a few times as always a good thing any idea of the mileage and whatnot on the gen4 engine just curious not going to make or break anything.? As a semi-mechanic and wrencher myself. I couldn't imagine making this basic mistake You can't start this engine none of that so while it's out on the floor hanging on the hoist whatever makes good sense to even take the plugs and coils out spend the motor over by hand have a smell in those spark plug wells for things we're looking to not be smelling mainly the coolant smell things like that I ask can't imagine not doing any of this but you know maybe I'm just weird.

 

Who “found” it? Either way, mechanic should have tried rotating via crankshaft, per @Tombukt2.

 

You found or he found the engine???
Did you or he NOT turn the crank BEFORE installing it?
HOW does he know the engine is "locked"?
Whoever "found" the engine(sitting on the side of the road?), is responsible for the engine.
If he "found" the engine, he's responsible for the labor also. If you "found" it, you pay the labor, again.
It is so much better to purchase a new or remanufactured engine.

Why not just replace the head gasket?

 

I'd think the mechanic is responsible for verifying engine will turn over, even if owner "found" it. It's somewhat analogous to carpenters arriving to build a house on a concrete foundation: even though it's not their workmanship, they spend the first day just checking all the foundations and embeds for compliance, part of the job.

Somebody should have checked it, lol.

 

The mechanic SHOULD have check the engine. jdm motors just don't seem to be what
some think they are.
You trusted him and he screwed you.
But, you SHOULD have some warranty about the engine.
And it IS possible, he didn't install the engine correctly and damages the clutch...

 

Op said his engine was an oil burner. I agree a rebuilt engine is a better solution than any used engine.

Op - Did the mechanic say it “was locked up” or is it a case of the engine won’t start or even attempt to start?

Locked up is extremely rare these days unless the engine was run without oil for a fair amount of time.

There are lots of stumbling points on a gen3 to gen4 conversion. First, the gen 3 wiring harness has to be modified as well as parts of the cooling system. Then there are common no start issues with any hybrid engine swap such as connectors missed or hoses like pcv disconnected. Finally common electrical issues include the hv battery orange disconnect not properly engaged to various fuses blown. A really difficult fusible link to replace is the 125amp buried inside the engine fuse box.

Try to get more detail.

 

Any person can walk up to that car right now and get a 19 mm socket and a half inch drive ratchet and try to turn the engine in the clockwise direction see what happens if it's up on a lift you can even hang on the end of the breaker bar I doubt it's locked up If it is look on the back edge of the girdle faces the firewall look right just below the exhaust manifold with a flashlight see any cracks?