Ok I got the head back from the machine shop, the 50 dollar reaming turned into the 150 dollar ream after the BOSS found out it was a MB head, but he also rerounded my prechambers for a tight fit

The P/c fit very nicely now, I bolted on the head and fuel systems , adjusted the cam and valves ,I will fit on the turbo and exhaust today, I will have to wait until Monday for a NEw chain rail pin to hear her run, The one and only piece missing.
It turns freely with nothing hitting, but there is still a compression stroke one time during a revolution, Is this the diesel pump making pressure? all of the injectors out and pc whisling like a ol steam engine I also used loctite 574 around the prechamber seals, Best stuff for metal to metal seals!!!
holds porsche racecar halfves together,

So when all said and done the 617 engine is a million mile engine if valves and oil,filters changed evey 2500 miles or so?