Breather Box

[blusmith]

Can someone help me to connect an after  market  Le Mans  type breather box  for a small block twin (V75) I have  rebuilt this crashed bike and  no  air  box  came  with the bike The  breather box has  five  pipes   a pair  of  small tubes at the  top and  three  larger ons  at the base  one  of  which has a  one  way  valve in it
Cheers Chris

[Antietam Classic Cycle]

Instead of trying to adapt a breather box meant for the early "big-block" Guzzis, why not use the correct one for your (small-block) bike?
http://www.harpermoto.com/16-housing.html

[guzzisteve]

If you're bound & determined to do it. The Small Block only vents at valve cover , that would go to the 2 line spigot on top. Drain to back of your oil pan goes to small pipe on bottom. Large pipe on bottom cap, it is for a pvc pressure system. Angle pipe on bottom should let extra pressure to outside air.

Try it it may work, if you have the parts already.