So I was looking into buying a civic hatch 92 and wasn't too sure on what all the motor terms were it's a b20 403 crower cam? https://akroncanton.craigslist.org/cto/5562114223.html
This is the car and was looking to buy but needed some help on specifications and more of an understanding/ what to look for when buying it thanks guys!!!

 

Not sure if this is the correct location for this post, but regardless, a b20 is a dual cam, MPFI, 2 liter engine. I believe it was found in Honda CRV's exclusively, but don't quote me on that.

If you're buying from CL i highly suggest asking the owner to remove the valve cover and send pictures of the modifications done to the valvetrain. Seeing inside the engine can also give you a VERY general sense of how the engine was maintained.
Start there and report back with pictures.

 

A few side notes:

I doubt this owner has all the COMPLETE interior, expect a few pieces to be missing.
He has a speaker with on his dash=no radio
I spy cheap ebay parts, beware

 

Or just double check the compression, my bet is a crower cam will change that. Double check standard compression for a b20, then do a test on the cl motor. If improved compression, then it more than likely will have one. Also, is there only just a cam installed? Why put a new shoelace on a shoe without updating the sole and tread and inserts? See what I did there?

 

Riddle me this Batman: How does a cam change compression?

 

How do cams affect compression?

That should help.