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CA 78 vent tubes

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olde-goat Member
Posts: 35
Joined: Thu May 31, 2018 3:25 pm
Location: Winnipeg Canada/Phoenix AZ

CA 78 vent tubes

Post by olde-goat » Sun Jun 21, 2020 8:24 am

I have a question regarding the three vent tubes on a 65 CA78.; head vent and two located on either side of the carburetor. Originally I thought that the tubes ran from the barbed fittings down and on top of the engine case out towards the back of the engine and dumps outside the frame just in front of the rear tire. After installing the engine I find that there is little clearance between the engine and frame to allow the three tubes to exit outside and terminate in front of the tire. Am I wrong in assuming that this is the way to route the tubes? If incorrect, where do the ends of the tubes terminate? Thank you..

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Jims65CA77 Member
Posts: 170
Joined: Fri Jul 05, 2013 3:31 pm
Location: New Jersey

Re: CA 78 vent tubes

Post by Jims65CA77 » Sun Aug 30, 2020 10:28 am

The two that come off the back of the engine cyl. go to the air filter. There are holes in the metal part of the filter to accept the tubing. Not sure of the other one on the head.

Now working/riding on my 1965 CA77 Dream...

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