Cylinder pressure testing for used engines

[knowledge8069]

Hello everyone. I'm in the process of hunting down a 2.4L motor replacement from local junkyards. One place said they have three. They said the best one is from a 2001 Alero which pressure tested at the following numbers:

200 210 210 210 (psi)

Found these numbers on Aleromod sticky "Everything technical on 2.4L." Not sure if these are the numbers for cylinder pressure testing or not:

Oil Pressure @ 3000 RPM 207 kPa 30 psi min.
Oil Pressure @ 900 RPM 69 kPa 10 psi min.

Seems a little odd, maybe they really meant kPa instead of psi when I asked them? Does anyone know what sorts of numbers the 2.4L puts up normally when pressure testing the cylinders? Also, a 2001 2.4L will work in a 2000 without the adapter nut or whatever for the knock sensor right? Are there any other differences?

I've read that pressure testing is a pretty good indicator of the engine's internal condition. Is there anything else I should test or examine to check for faults? The engine is out of the car, so no running it at the yard. They do give a 30 day warranty with the engine, or 1 year for an extra $139. Any advice would be appreciated, as always. Thanks in advance.

[Philbar71]

According to the Haynes repair manual they say a minimum of 100 PSI and maximum variation between cylinders 30%

[Oldsman]

those are good numbers for a compression test.

[Lucalare]

those number you have are the pressure the moving pistons cause on the air in the cylinder, not the oil pressure. And i agree, those number are just about perfect, and far more than my old dodge 318 did.

[knowledge8069]

Thanks for the advice, picked up the engine today. =)