Carburetor keeps coming loose

[Zeeb]

So, .... I built a kit bike with offset carburetor intake tube (bike has a short frame) and had to sand/file the end of the tube down so the carburetor could fit over it.

That unfortunately left me with a loose carburetor. I've tried wrapping silicone tape and teflon tape around the intake tube, at different times, trying to make a tight seal between tube and carburetor.

Neither strategy worked. Carb eventually comes loose again.

Any ideas on this one? I'm frustrated and considering coating the intake tube in JB Weld.

I need something that will keep a tight fit, and be compatible with gasoline (RTV gasket maker, for the record, is not. Otherwise this would have been the perfect solution).

Thanks!

 

[Venice Motor Bikes]

I seriously suggest buying another offset manifold!! They're cheap enough that this will be a inexpensive lesson.

 

[crassius]

yeah, never seen one that needed sanding - maybe a factory error?

have seen guys jb-weld them on when bent or broken so that carb/intake is forevermore a single unit, but that isn't worth the hassle

 

[Zeeb]

Hmm.. you think another intake wont be too big? I sanded it down slightly too small for a reason. Sanding produces out-of- round error, such that soft filler material is needed to eliminate vacuum leaks. Hence why i wanted a little wiggle room between carb and intake.

Ideally, i correct size intake eliminates this concern, if one is available.

 

[Venice Motor Bikes]

Ideally, i correct size intake eliminates this concern, if one is available.

The stock manifolds (& the extended manifolds) are the correct size!!!!!
It's supposed to be a tight fit to make a leak free seal & to keep the carb from falling off!

 

[Greg58]

This is confusing to me, can you take a couple of pictures? Did you sand down the intake because the carb hit the frame?