|The engine starting to be assembled.|
The assembly work went off without many problems. It just took time. The head gasket was installed and the head torqued down. The rocker arm assemblies were installed, the valve tappets adjusted, the fuel injector pump was installed and re-connected to the governor, and the cooling lines were hooked up. One of the most difficult parts of the assembly process is getting the small ball on the fuel pump metering rack into the slot in the control arm from the governor. This happens inside the governor housing, open to the front, but not visible. You need to stick your hands inside the governor housing, which has very little room, and try to line up the ball with the slot as you lower the injector pump. It took me several tries. Then, after successfully completing the task, I realized that the pump had to come back out because I had not placed a pencil line on the rack to make a future adjustment.
|M4 SHCS and Knob|
|Pump with Knobs|
After the water pump was installed, I bled the fuel system and fired it up. This old Yanmar hummed like a Swiss sewing machine! Well, not really, but it ran well. There were a few adjustments to be made, but overall, the engine runs great. Note: I did not install the alternator and charging system components, nor did I hook up all the engine monitoring. The charging system is getting an overhaul and will be completed next weekend along with the engine monitoring and alarm system.
So, if you, dear reader, have been following along, I'll bet that you are curious about whether the rebuild accomplished the goal of increasing the engine RPM at wide open throttle (WOT). I know I was curious and couldn't wait to engage the prop. Well, it did not! All of this for a negligible performance increase? You've got to be kidding! .....more to come......