Fuel tubing size - what size do I use?
05-20-2006, 05:24 PM
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Fuel tubing size - what size do I use?
Is there a "rule of thumb" for what size fuel tubing to use? I will be feeding a 43cc Fuji gas engine. I know about using gas compatible parts.
05-20-2006, 05:33 PM
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RE: Fuel tubing size - what size do I use?
The smallest neoprene tubing is more than adequate for ANY size gasser....The fuel inlet hole in the carb is smaller than the ID of the small tubing...A garden hose would not put any more fuel through the carb....
05-21-2006, 06:49 AM
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RE: Fuel tubing size - what size do I use?
It doesn't matter for the carb feed. I run a 3 line tank system and do run a larger line on the fuel/defuel port and the fuel can to speed the fueling process, it's not needed but helps if your feeding 150cc.
05-21-2006, 11:05 AM
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RE: Fuel tubing size - what size do I use?
Not a lot of fluid dynamics in a 7 or 8 inch long fuel line...
The neoprene fuel line on my test stand is at least 18 inches long, no problems on 150cc engines...
The neoprene fuel line on my test stand is at least 18 inches long, no problems on 150cc engines...
05-21-2006, 11:31 AM
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RE: Fuel tubing size - what size do I use?
I agree 150cc can run a small size to the carb. I use the larger tubing elsewhere only to speed up the fueling process.
