brianchahn wrote:Question about the Carburetor that came with my 72 Norton (came in a box of parts). The only markings on it are MIKUNI KOGYO JAPAN, and MIC on the other side.
Will this be a sufficient carb for the bike?
I also have the two to one machined part, but don't know the correct size screws in the picture below. They do not seem to be the same size as the ones the other ones for that part that screw into the block. I think it might be a 7mm or something.
(second to last pic is not mine.. i got it off the net)
Does anyone know the correct sized air filter for this carb and where to get it at the best price?
Thank you for the help.
An easy way to identify which size VM you have is to look at the rubber coated spigot that attaches to the carb. The size is cast in the edge.
This is for a VM36mm carb. The size is stamped on the carb body itself on the front of the choke.
Their 6's always look like 5's, that way.
The screws that I have are 5/16 coarse for both. It looks like you may need vent hoses, gaskets, aircleaner, screws and washers, a new cable with adjuster, and maybe even some innards. Source it all from a Sudco dealer, or MAP.
The 34mm carb is great, it' sufficient unless you are prone to mix it up with hooligans and need every advantage you can get. But if that were the case you would probably be running dual carbs. One difference in the various VM's is the size of the carb body. The 32mm and 34mm share the same casting. The 36mm / 38mm casting is significantly larger. On my bike the 36mm wouldn't fit.
Lastly, the socket screws you mentioned that thread into the head need a specific type of washer. They are narrow and appear to be hardened.