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Author Topic: 1980 cb650 gas line size  (Read 1500 times)

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Offline cb650 bobber

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1980 cb650 gas line size
« on: June 11, 2008, 10:14:45 AM »
is there a standard size...there is no markings on my current ones wanted to swing by autoparts store but doubt they will know...
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Offline Gordon

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Re: 1980 cb650 gas line size
« Reply #1 on: June 11, 2008, 10:20:51 AM »
5.5mm
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Offline kslrr

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Re: 1980 cb650 gas line size
« Reply #2 on: June 11, 2008, 10:22:44 AM »
If you can take a sample with you they can figure it out.  If not, measure the diameter of the petcock outlet.
It is either 1/4" or 3/16".  I ended up using both sizes with an in line coupler on my 650 since it is a combo of '79 carbs and '81 tank.
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        1981 CB650 engine
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Offline Gordon

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Re: 1980 cb650 gas line size
« Reply #3 on: June 11, 2008, 10:29:08 AM »
Quote from: kslrr on June 11, 2008, 10:22:44 AM

It is either 1/4" or 3/16". 

It's 5.5mm.  1/4" will work if you use hose clamps.
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Offline cb650

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Re: 1980 cb650 gas line size
« Reply #4 on: June 11, 2008, 04:11:22 PM »
I used 1/4 inch on my with only the spring clamps and it works fine.
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Offline Gordon

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Re: 1980 cb650 gas line size
« Reply #5 on: June 11, 2008, 04:26:31 PM »
Quote from: cb650 on June 11, 2008, 04:11:22 PM
I used 1/4 inch on my with only the spring clamps and it works fine.


Fine, be that way! ;D ;D
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Offline cb650

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Re: 1980 cb650 gas line size
« Reply #6 on: June 11, 2008, 04:33:15 PM »
Quote from: Gordon on June 11, 2008, 04:26:31 PM
Quote from: cb650 on June 11, 2008, 04:11:22 PM
I used 1/4 inch on my with only the spring clamps and it works fine.


Fine, be that way! ;D ;D

  I will   :D
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