Ok, well lets see I have a Ls Vtec b18a bottom and b16a head in my 94 coupe. I got it in and it was running really good, it was built for turbo so it makes a bit of noise when running, clearances in cylinders, sounds like a diesel. But thats all fine I drove it for a few days and then it died. Well one of my friends forgot to tighten the cam gears and the intake cam went all the way retarded. I re timed the can and it ran good for a day then a the next day I was driving taking it easy and it started to sound like something was slapping under my hood, my first thought was bent valves. I did a comp. test and it was 160psi in all 4 cylinders, I know my comp is really low, like 8.8. But I was wondering if that is still too low comp. numbers. If anyone could help me and give me some ideas without taking it all apart please let me know!!!!