I filled the cooling system and ran the engine for about ten minutes to get it up to temperature. The thermostat is working and after the temperature climbed above 160 I could feel that hot water was moving forward through the radiator. There were several leaks from hose clamps that weren’t tight but I didn’t see any leaks coming from the tubes that I welded. There is a substantial leak from the OEM connector at the rear engine coolant crossover pipe. The connector is new but is not sealing well under pressure. I’m going to try a thicker o-ring.

The process for filling the cooling system: I filled the radiator to the top, installed the high pressure cap, then filled from the coolant expansion tank until the tank was full. I opened the radiator cap to release some residual air and topped up the expansion tank.

During the ten minute warmup, the MS3 registered about 12 instances of lost sync on the crankshaft. Each time I blipped the throttle hard the ECU would register a couple instances of lost sync. I couldn’t hear any missing or stumbling after these events. That’s 12 instances out of about 18 thousand revolutions so not a high percentage. I still need to check the timing and play around with the idle settings because the idle speed is very high.

I received the CV boot kits so I will be assembling the axles this weekend.