vaccume tube from air filters

jplayxs · Full Member Joined: Aug 03, 2008 Posts: 16

I recently aquired a 78 im turning into a bobber project, it has the clamp on filters on the carbs instead of the airbox....on the back of each of the clamp ons there is a tube going from a fitting on the filter to the top of the motor area...i dont really know how engines work...but im guessing its some sort of vaccume tube. But i noticed some of the clamp ons for sale dont have these fittings on the back of them...so are these two hoses nessicary?? thanks for any help

xackley · Posted: August 31, 2008, 9:50 pm Post subject: Re: vaccume tube from air filters

Breather tubes, absolutely required. But if they don't look good in the filter you can route them elsewhere

jplayxs · Full Member Joined: Aug 03, 2008 Posts: 16

where else could you route them??? im actuallyl running into clearence issues with my battery/electrical box...the filters themselves clear the box, but the plastic fittings that go on the end of the clamp on filters for the breather hose hit the box when i try to mount them...and ive messed around with quads back in the day, and ive never seen a carb assembly so hard to clamp back onto the motor...damn thing keeps slipping off on me! Confused

xackley

650rider.com/index.php...cuum+brake

I went with the vacuum check valve setting over my K&N pods. But if I was going for a cleaner look in the space around the carbs I would have put in a T to connect the 2 breather hoses and routed up under the tank, and then down the frame with a single hose to the ground.

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