I have a 1995 Honda Del Sol Si, D16z6 SOHC, Valves were making noise, thought it was my turbo, cause the seals are blown, then oil light started to flicker when pushing in the clutch, the car would also drop rpm's to about 400 when I first hit the clutch, then it started to shut off when I would push in the clutch, then the valves or somewhere in my head started to sound almost like marbles or knocking... I then got my car home pulled off the oil pan (which had some small chunks of cast iron) resealed the pump vac. and replace the oil pressure switch. I also removed the valve cover and looked at everything, but i really didn't know what to look for. I then Tried again hoping I just had low oil pressure and that was taken care of, but the marble noise was still there and I don't really know what to dig into next. Any help would be great?? Thanks, Jesse