crankcase

I have a 1971 750 Commando. About 1.5 years ago the engine seized and destroyed the case. Luckily I found a mechanic at Fair Spares New England who specializes in Nortons. He rebuilt the engine using a Combat case. The problem is, that case has a rather robust vent behind the cylinders towards...

Hi All As some of you may know, we have been making parts for Norton Twins for the last few years, and whilst my knowledge of Norton Twins is limited, my old man has been involved with them since before he was my age! We are now at a point where we have Crankcases and Alloy Barrels in stock...

Hi. I´m currently restoring the engine on my 71 roadster. When a took the crankcase apart I discovered that the loop on the left-hand side was cracked. It's the loop where the camshaft is running through (see pictures below). So, my question is: can it be repaired by cleaning it up and welding...