Breathing new life into the 318 in the Scamp!
Called Tim up at Hughes. Same gig. I figured it wouldn't make much of a difference. He mentioned the oiling hole and as long as it's the same size, it's fine. I figured just as much.
Checked the bore with the wire idea, as per suggested, it seems fine to the guide, but this bore has a relief in the back of it, so I can't check everywhere and it triangulates support around that larger relief in the bore, so I can't do anything to check squareness of the cylinder, without broaching.
Sooo... You're all going to find out if it actually works this round. If I don't see it drop freely in the bore with some light oil, I'll broach it.
I did check access through the head and I am going to pull it back out after break in, with a magnet.