So I inserted it cold, but it has not been sufficient. 

I fired it up yesterday and run the first heat cycle, there was a small leak. This morning I rode it for the first time and in 2 min, the water pipe became loose and all liquid was lost. As I am wearing shorts and have no fairing, it took me 1 sec to stop and call for a tow vehicle. 

The bore in the barrel has a ridge that los like it does the sealing, but I think the tube needs to be glued somehow. 

Anyway, the engine febles strong up to 7-8k.