I had a dream, It was about a 6 Options

[DavidSweden]

I had a dream to install a 6, that was a few years back and I even got a 2,2T motor but the project didn't get off the ground, anyway as I have run out of things to do I thought I might resurrect the idea.

According to the PO the motor came out of a running car and I want to make sure that it runs before I commit to installing it.

What do I need to do to get it running?
I do not have a spare gearbox for the starter or an oil tank is there an easy way to fire it up without (or using substitutes for) these parts and what about the electrics, there is a coil but I think I need more than that?
Any help much appreciated as I know nothing about these engines.
PS:
It looks like the motor has been opened up at some time there is a lot of sealer on the case seam behind the flywheel, do you think its been opened?

[infraredcalvin]

I have a somewhat dumb but relevant question....

Why so many people recommend a compression test rather than a leak down at this point?

A leak down requires much less effort because the engine is out on the floor (or stand), no trans or starter, etc. it also gives you much better indication of piston ring, intake / exhaust valve condition as you can hear and test where leakage may be occurring. While it requires a compressor and a specialized tool, most already have a compressor, and the tool can be rented or loaned from your local flaps.

I was always taught that a compression test is easier to perform when the engine is installed and “running”, but it just gives you a general sense that something is wrong (rings, head seal, valves).

So here’s the dumb question, what does a compression test tell you differently than a leak down?

This is definitely not a knock to the people I consider experts who have answered above, just looking to learn....