Fuel and vent hose question

garncarz · Post by **garncarz** » Fri Apr 25, 2014 3:45 pm

Does anyone know the proper/period correct hose material and size for:

Tank cross connect:
Petcock to carb:
Cylinder head breather:
Head air vent to air filter:

Thanks again!

peter4821 · Post by **peter4821** » Sun Apr 27, 2014 12:23 pm

6mm black rubber, crossover 8mm clear.

G-Man · Post by **G-Man** » Sun Apr 27, 2014 9:00 pm

All black rubber., no clear on original bikes.

http://www.davidsilverspares.co.uk/tubes/

G

cknight · Post by **cknight** » Mon Apr 28, 2014 3:02 pm

The cylinder head breather lines (from the fittings below the carbs to the air filters) were a plastic semi rigid type material, not rubber hose. The closest I've found is a McMaster Carr product, 6mm I.D., 1mm wall thickness. Their part number about six years ago was 50405K66 (black). It appears it's now 50405K22 (black). Available in 10 foot lengths. Regards, Chase