[dannichols1474]

Yesterday, I received and installed the new copper sealing washers for the cam tower oil lines, ran one 15 second cranking cycle to check oil pressure, made a final visual inspection before start up, ran a final fuel pressure / leak check, then opened the hand throttle a bit and cranked over the engine. It started almost immediately and I adjusted the hand throttle to give about 2000 rpm. The engine ran rather rough, and had a hard time holding 2000 rpm, it either wanted to run at 1500 rpm or rev up to 3000+ rpm. Also, I noted the intake vacuum was reading 85 - 100 kPa between 1500 - 2000 rpm, I visually checked for sources of vacuum leaks but found none. I ran the engine for 20 minutes, then closed the hand throttle and let the engine drop down to idle and shut it off. First engine run to break-in the camshafts was completed.

I immediately jacked up the car and drained the engine oil - it had started out darkish amber and was now a grayish amber. I change the oil filter and added fresh 15W-50 break-in oil.

Next steps are to check and adjust the timing advance offset to make sure the timing commanded by the ECU matches the physical timing of the engine as measured with a timing light, and then balance the airflow thru the ITB's.

Since the vacuum signal with the S-cams appears to be weak, I have created a new project in Tuner Studio which uses alpha-n (TPS signal) for loading sensing rather than speed density (MAP signal) I was using with the engine before the rebuild.