Hmmm dunno.....I've been pretty grunk before, but rum will do that to a man.
Anyway, Thanks for all the responses and advice! Adrian I'll give you a call and bend your ear a bit, whens a good time?
I have one important question though, just how solid are these engines? As I think I mentioned, I'm planning on taking this beast on a charity ride to the back of Bourke next year, so I guess that'll be maybe 1400kms round trip, mostly dirt roads. Reckon this engine will stand up to hours of reasonably high rev's or should I put together something a bit sturdier for that job and just restore this bike?
Barrels wise I was fortunate enough to pick up another one with a standard 71mm bore, however when I compare it to the original there are a lot of differences. The original barrel is an Elko 71/6, the replacement is an Elko 71/5R. The bore, and barrel overall height are the same, the head bolt pattern is the same. Differences are that the /5R has 8 fins, compared to the /6 with 7 fins, the /5R has much bigger square fins as well. The /5R also has a different design to the ports in the skirt.
So I'm assuming these barrels will intercharge, should I expect to make any allowances for this?
Bottom pic shows original on the left and replacement on the right, and the skirt length under the barrel is identical on both.
Cheers
Bill