We had one of our motors pulled. I was told it would take about 24 hours spread over 3 weeks. Is this the usual amount of days a motor should take? We are coming up on 2.5 weeks. The motor is just getting put back in and the mechanic still needs to add some parts to the motor as well as hook up the outdrive. How much longer can we expect this process to take? I'm concerned we will be longer than 3 weeks.
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Have removed 4 cylinder motors enough to spin and change a coupler in a couple hours. Have had rebuilds that end up taking a year. Too many variables without any information to guess.

It depends. What boat is it?

Removing a BBC from a 33' Baja Outlaw is a COMPLETELY DIFFERENT EXPERIENCE than removing from a 33' Active Thunder. And a 343 Cobalt? Forget about it.

Motors are electric. Engines are suck/sqush/bang/blow.

a combustion engine can be called a motor. The terms "engine" and "motor" are often used interchangeably in casual conversation, especially when referring to internal combustion engines in vehicles. Both describe a machine that converts energy into mechanical work. However, there are technical distinctions:

• Engine: Typically refers to a device that converts thermal energy (from fuel combustion) into mechanical work, like an internal combustion engine.
• Motor: Generally refers to a device that converts other forms of energy (like electricity) into mechanical work, but it’s also broadly used for any power-generating machine.

In practice, calling a combustion engine a "motor" (e.g., "car motor") is widely accepted in everyday language, though some a holes might argue for precision in technical contexts.

as said before, depending on engine room space... But when space exist, and not everything is rusted
I was at 30 min to prep and remove engine hatch
1 hour to remove one engine
2 hours to put it back in
make it 4 hours in /out to make sure

besides that, ordering parts, machining, waiting for back ordered parts, may add days or weeks to the process...

Too many variables. Why was the engine pulled to begin with ? Did it need work or was it pulled to access something else in the boat ? If the engine needed work did parts need to go to the machine shop etc ?

Depending on the shops workload they might have spread the job out between other quick items.

Give us some more details to chew on.

24 hours seems like a lot. I’ve pulled hatch and yanked both motors by lunch several times unfortunately. Nothing rusted and no complications.

honestly, it’s only about 2 dozen bolts total including drive.

Most boat engines are designed around the power pack concept. A complete integral unit.

Wiring harnes
Exhaust disconneect.
Raw water in
Fuel in/out
Ground straps
+12v to starter
engine mounts

The trouble starts with getting access to each task.

You can get a lot done in 1 hr of focused work with easy tool access. (Not looking for your tools)

6 drive nuts (assuming alpha / bravo package), 2 transom plate bolts, 2 front engine mount nuts (6 if you have offshore bracket)

From there it's fuel line(s), power steering lines, shift and throttle cable, + and - cables and the main harness

I'm generalizing for sure but 24 hours is a while for someone who knows what they are doing. Above all else, it comes down to the hull and how much space they have to access this stuff