i cleaned up a filthy head and barrel,i just blended where the seat is inserted in the exhaust ports,someones already scooped out the bowl area a little.
i also de burred the inlet manifolds and matched them to the head.
this 550 barrel has been overbored to 61 mm,i was told by the old bloke i got the motor from it only needs rings,ive had a lot of stuff from this guy over the last couple of years and he has tools lying in dirt and open cases in the weather etc,it had been assembled less the rings,i found a few bits in the bottom end,and just discovered this after the clean up,someone has busted the rings on install and not noticed,there is even a bit of ring embedded in the gasket surface here,the bores look good but i havent miked them up yet.