Indeed the Samcos were a bargain!
The engine was just a risk I was willing to take, it was worth buying just for parts alone with the amount of stuff I got with it. It actually runs really well apart from the knock.
We're taking the sump off tonight to inspect and hopefully put a set of standard shells in there. I'll be over the moon if that fixes it
We ran it up to temperature the other night and it's idling really nicely, exhaust gas seems clean, bit of black as you'd expect when you rev it. There was a period where there was a lot of oily smoke coming out but that seemed to clear after a bit of a rev. Probably just residue as it's all been sat around for a while.
When the new bearings are in i'll run it up to temperature properly and let it burn all the **** off and see where we are at then.