I have an S13 hatch that I just had a motor rebuilt for. Its a redtop SR20DET, brand new everything, had someone I know rebuild it and recently got it back into the car.
I was having issues setting timing and noticed he set timing really wrong. It was 2 teeth off at the cams. I fixed the timing issue and finally got it to start, kind of. It will kick over, start, then die. Throttle input does nothing to keep it running. Currently the car has subaru 550cc injectors, Z32 maf, GT2860rs and a PowerFC with a tune for the motor that blew up. It ran before the motor shit a rod out, but refuses to run now.
So I decided to compression test the motor... Cylinder 1 came back with 70psi of compression

The others were 150,160,140. I called up the guy who built the motor and he told me that it wasn't a big deal and that once it ran it would probably be fine. I don't think it will be. 70psi is incredibly low, especially for a BRAND NEW MOTOR.
I need some input on what I should do, seems like it isn't even worth the time getting it to start considering the compression is already low.