Question, There are two carb vent nipples one on #2 and one on #4 carb. Anyone know the correct routing for the vent tubes. I'm thinking they should vent high well above the carbs ?
Thanks for any info.
On Z1's, we terminate them one on each side between the frame rails under the tank and the main backbone, just in front of the gusset where the backbone joins the two upper side rails.
Later Z1's have an oval cutout in said gusset sized just right for the vent hoses. There's been some discussion as to the real intent of that oval hole. We still prefer to terminate the hoses directly under the tank as described above for (perhaps) better protection from water incursion.
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
I'm quite sure the factory routing was as your two photos depict, through the oval in the frame gusset and secured in the clamps in the air filter cover.
Disclaimer: LONG time ago that I did "factory routing" Mike
Former M.E. at Kawasaki Motors Manufacturing, Lincoln, NE
1966 W1 (the Z1 of 1966-50H.P. and 100mph!)
1974 Z1A (disassembled)
1976 KZ900B LTD (SOLD!) it's in GOOD Hands!
1978 KZ1000 LTD
1976 KZ900B LTD pile O parts!