Monza Fuel Filler Caps

[mudhut]

2" is probably sufficient and in any case it's too easy to drop your fag down the hole on the bigger ones like mine. Going outside with camera - will add to this post in a little while.

Sorry about the sawdust down the hole in the rear cover...
The fibre washer under the screw-on filler cap seems to always go out of shape. I ought to get it welded onto the neck. The neck is jointed to the spigot on the tank by a large piece of fuel hose and jubilee clips that I will get rid of and replace by Clic when i can obtain the right size.