I friend of mine has been having trouble starting his 3.1 liter track car. It has always been troublesome to start but at the beginning of last season, it just wouldn't start. I volunteered to take a look at it so he trailered the car to my house. Since I did not build the motor, I started from scratch. Cam timing is set to spec, Ignition is set to 8 degrees BTDC, Mikuni's have fuel and are jetted properly for the motor. What I did find troublesome is the 105lbs of cylinder pressure but since they were all the same, figured it was due to the cam overlap. I have a nice spark which will jump an inch gap but the motor refuses to start. You can hear some of the cylinders fire and try to start the motor but it never catches enough to start completely. When the engine is cranked with a fully charged battery, to me the engine is just not cranking fast enough. Also, when doing the compression test with all of the plugs out, the engine also does not spin as freely as I think it should. Is it possible that this bottom end was just assembled too tightly? The owner said he has always had the same hard start condition since day one. It just seemed to get worse until eventually it wouldn't start at all.
Any suggestions?
Joe