1974

I am in the middle a top end and cylinder base overhaul of my R90/6. While looking up specs to check for piston ring wear limits (as in gap between the rings and the ring groove in the piston) I have come up with a bit of a surprise. I have several sources which I have crossed checked for the...

Greetings, first time posting here, my name is Marco and myself and two buddies hit the road 6 days ago on a mission to get to the west coast and back (we are blogging about it on 6onasphalt.com should anyone care to have a look). I'm on a '74 R90 which has, as of today, left me a bit stranded...