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Help on where to connect this tube

Posted: Wed Aug 07, 2019 1:57 pm
by mgendron
Hi, I have a CB650 1980 that I am transforming as a bobber and I was wondering where this tube is going - this one is from the bottom of the carb and it has screws on it. the tube I am holding in my fingers

ttks for the help

Re: Help on where to connect this tube

Posted: Thu Aug 08, 2019 12:59 am
by Volker_P
Welcome here! :D

Hm, this looks like fuel line dimensions and no stock clamp.
From the bottom of the carbs means it is connected there (to what?) or just ends there above the transmission case?

Re: Help on where to connect this tube

Posted: Sun Aug 11, 2019 8:38 pm
by mgendron
It'S connect in the bottom of the carb -in the pics not very clear but you will see the head vis where it is located
(right in the middle of carb 1 and 2 on the left side, the tube in front) - When I connect my tank on it gas was going to the floor. (sorry it's sideway)

Re: Help on where to connect this tube

Posted: Mon Aug 12, 2019 2:22 pm
by GeorgeSweety
That looks like your fuel pipe that goes to you fuel tap, if you connect it to your fuel tap and fuel pours on your floor have you checked the clamps are tight and the pipe hasn't got splits/perished?

Re: Help on where to connect this tube

Posted: Mon Aug 12, 2019 2:27 pm
by GeorgeSweety
Fuel pipe, blue arrow, ignore the two circled items.

revell carb 012.JPG
revell carb 012.JPG (175.39 KiB) Viewed 1180 times

Re: Help on where to connect this tube

Posted: Mon Aug 12, 2019 3:08 pm
by mgendron
fuel pipe?!? meaning to connect on my petcock?!? what I am doing whit the other one?(as seen on my first pics) I connect where? as seen on your image on top of your green circle -

Re: Help on where to connect this tube

Posted: Mon Aug 12, 2019 4:08 pm
by GeorgeSweety
mgendron wrote:fuel pipe?!? meaning to connect on my petcock?!? what I am doing whit the other one?(as seen on my first pics) I connect where? as seen on your image on top of your green circle -

The two thinner pipes are just float bowl vents, they do not connect to anything.

Re: Help on where to connect this tube

Posted: Mon Aug 12, 2019 4:17 pm
by GeorgeSweety
Green = Float bowl vents, these do not connect to anything, they are just tucked between the carbs and airbox.
Red = Fuel pipe connects to the fuel tap/petcock.
Where are you located?

revell carb 005.JPG
revell carb 005.JPG (133.28 KiB) Viewed 1175 times

Re: Help on where to connect this tube

Posted: Tue Aug 13, 2019 10:34 am
by mgendron
I am from Montreal

Re: Help on where to connect this tube

Posted: Tue Aug 13, 2019 1:34 pm
by GeorgeSweety
mgendron wrote:I am from Montreal

That explains the difference in terminology, in the UK a fuel tap is very rarely called a petcock :lol:

Re: Help on where to connect this tube

Posted: Wed Aug 28, 2019 6:20 pm
by Efferdy
GeorgeSweety wrote:Green = Float bowl vents, these do not connect to anything, they are just tucked between the carbs and airbox.
Red = Fuel pipe connects to the fuel tap/petcock.
Where are you located?

revell carb 005.JPG


A buddy of mine might need this carb diagram. Thanks