Attempted to finish power supply circuits, and found incorrectly routed and constructed wiring.
Attempted to finish crank position sensor, throttle position sensor, intake air temperature sensor, engine coolant temperature sensor, idle air control valve, wide band O2 sensor, and related control unit wiring , fuel pump, fuel injector, and ignition coil circuits also incorrectly routed and incorrectly constructed.
To accurately tune the engine, and avoid damage due to a fault in one of the two groups of cylinders, a second air-fuel ratio meter was needed, which you supplied, when so advised.
The engine camshaft timing was unknown, and the engine had not run, and this information was unavailable from the builder, representing a considerable risk to your engine. The camshafts were believed to have longer duration and greater lift than stock, increasing the danger of internal engine damage, should the timing of one or both be improperly calibrated.
One of the batteries supplied was defective.
We now have a sound electrical power source.
The valve clearances (checked in preparation for the cam timing analysis) were incorrect, some by 40%, and have rectified.
The cam timing location is adequate and safe for startup and tuning.
The primary ignition coil is now correct.
The fuel pump circuit has been reconstructed.
The power supply circuits have been reconstructed.
The exhaust pipes have been removed and a second O2 sensor bung has been installed with correct orientation and clearance.
The fuel injector wiring harness has been reconstructed.
I am now working on finishing these circuits:
Engine coolant temperature sensor
Intake air temperature
Throttle position switch
Air/fuel ratio meter, cylinders 1-3
Air/fuel ratio meter, cylinders 4-6
Primary ignition
idle air control
Monitoring oil pressure would be wise, and could be integrated into the data logging.
I’ll follow up with another report next Thursday, the 31st.
Thank you,
so there we are.
