Stroker break in. Knocking

[Rotorwash350]

Hi,

I just finished my stroker build and install.

I fired it up and smooth as can be. Run for 5 or 6 minutes. Oil pressure at 3 bars and when I apply throttle it comes up to around 4 or so. Thought I had burped the coolant fairly well but must have had a bit of a bubble. Got up to 110 and I turned it off. Found there was some air and topped coolant. Crank was slow... I got a bit concerned but after that all good.

Ran for another 20 minutes varying the throttle from 1000 - 2000 burped the coolant a bit more as well. Everything seems great.

Drove it to work about 5 km. All good. Oil pressure good and Temps at 90c

Changed the oil and filter
Oil is kinda darker than I figured. But clean. Coolant looks good.

I go for a drive on the highway for the first time. At about 3 km it starts knocking. I turn around and drive back to work , knocking is getting worse. Park it at work. Fire it back up and pull each plug wire. Knocking is consistent on all. I pull the valve cover and everything ĺooks good.

Drain the oil and it looks OK.

Any advice where to go from here?