Hi all
New to this forum, been lurking for a while.
I've been a Brit bike man all my life, but I've always liked the 400 fours, and now I seem to have ended up with several to build one out of. I've been following the exhaust thread with interest and I just wondered about the mention of exhausts turning blue if they're not double skinned. Why?
With brit bikes if the down pipes (single skin) are blue it's considered a bit of a poor show really. It usually means you've either got the mixture or the timing wrong .
So what's different.
Just curious.
Terry