Author Topic: Carburetor Vent hose -- where to get?  (Read 5563 times)

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Offline jas67

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Carburetor Vent hose -- where to get?
« on: February 17, 2013, 09:33:30 AM »
Where is a good place to buy the correct carburetor vent hose in quantity.    I need this for my CB400F's, and CB350 Four.

Thanks in advance!
Jay
Classic Honda:
1976 CB400F
1975 CB400F (project)
1975 GL1000
1968 CL175 (1 nice one, one project)
1967 CB77
1967 CB160 (2 of 'em, both projects)
1967 CL160 project
Triumph: 2017 Thruxton R
BMW: 2016 R1200RS, 1975 R90S, 1973 R75/5, 1980 R100S
Ducati: 2013  Monster 796, 2013 848 Evo Corse SE track beast, 1974 750GT, 1970 Mk3d 450, 1966 Monza 250
Moto Morini: 1975 (titled 1976) 3 1/2 Strada, w/ Sport clipons.
Moto Guzzi: 2017 V7III Special,  1977 Le Mans, 1974 Eldorado

Offline wowbagger

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Re: Carburetor Vent hose -- where to get?
« Reply #1 on: February 17, 2013, 11:28:19 AM »
I've been using black automotive windshield washer hose for a while now with no ill effects. I looked into getting the correct, discontinued Honda part for the overflow tubes for my CB500 Four but the only place I could find it wanted almost $90 for it. I decided the $4 of washer hose sounded better.

Offline Johnie

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Re: Carburetor Vent hose -- where to get?
« Reply #2 on: February 17, 2013, 01:50:35 PM »
Agreed....I go to my local downtown hardware store that has it on a spool. Minimal cost compared to the Honda inflated price. Have it on 4 bikes with great results.
1970 CB750K0 - Candy Ruby Red
1973 CB750K3 - Candy Bacchus Olive or Sunflake Orange
1970 Chevy Chevelle SS396 - Cortez Silver
1976 GL1000 Sulphur Yellow

Oshkosh, WI  USA

Offline jas67

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Re: Carburetor float bowl overflow -- where to get?
« Reply #3 on: February 17, 2013, 05:21:08 PM »
OK, I was using the wrong term.
What I meant was the float bowl overflow hoses (the really small stuff, attached to the bottom of the float bowls).
What about that?    That stuff is way smaller than anything they sell at an auto parts store.
Classic Honda:
1976 CB400F
1975 CB400F (project)
1975 GL1000
1968 CL175 (1 nice one, one project)
1967 CB77
1967 CB160 (2 of 'em, both projects)
1967 CL160 project
Triumph: 2017 Thruxton R
BMW: 2016 R1200RS, 1975 R90S, 1973 R75/5, 1980 R100S
Ducati: 2013  Monster 796, 2013 848 Evo Corse SE track beast, 1974 750GT, 1970 Mk3d 450, 1966 Monza 250
Moto Morini: 1975 (titled 1976) 3 1/2 Strada, w/ Sport clipons.
Moto Guzzi: 2017 V7III Special,  1977 Le Mans, 1974 Eldorado

Offline Thousandson

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Re: Carburetor Vent hose -- where to get?
« Reply #4 on: February 17, 2013, 05:41:59 PM »
I'm using fuel hose for mine. I would think, a motorcycle parts store should have fuel hose by the roll, and you can buy it per foot.

I also completely recommend, Dime City Cycles online. http://www.dimecitycycles.com/ They have all kinds of colors, and hose crimps for all sizes.

FYI, do not use washer hose for fuel, oil or other corrosive materials. Buy the right kind of hose, no leaks later.
Current ride: 78' Cb750F

Offline bjbuchanan

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Re: Carburetor Vent hose -- where to get?
« Reply #5 on: February 17, 2013, 05:44:37 PM »
Just use windshield washer tubing it is like 3/32 size, nice and small

You don't have to worry about any real fuel resistance because you shouldn't have fuel going in to it anyway if everything is working properly. The occasional overflow or maybe sticking float wouldn't be an issue as it is not even nearly sustained exposure that would break down the rubber

Go to autozone, NAPA, whatever and get some cheap tubing and save the rest of the money for going fast
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline kck3

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Re: Carburetor Vent hose -- where to get?
« Reply #6 on: February 17, 2013, 07:26:31 PM »
I pick mine up at my local hardware store in the lawnmower isle.  use the fuel line that they have in rolls and just cut off as much as I need.

Offline SohRon

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Re: Carburetor Vent hose -- where to get?
« Reply #7 on: February 17, 2013, 10:05:07 PM »
Quote
I looked into getting the correct, discontinued Honda part for the overflow tubes for my CB500 Four but the only place I could find it wanted almost $90 for it

Actually, Honda still sells the hose... here it is at BikeBandit, but I'm sure the other vendors carry it:

http://www.bikebandit.com/houseofmotorcycles/1971-honda-cb500/o/m9140#sch393503

(No. 30 on the parts fiche)

$9.98 for 3.5 X 3000mm bulk hose; nearly enough to do two carb sets, including vent and overflow tubes, both of which use the same hose.

That said, I like the windshield washer hose idea. As long as it's of small enough diameter it should work just fine and would be a little more easily available, I should think.
« Last Edit: February 17, 2013, 10:23:05 PM by SohRon »
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline CafeDawg

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1976 CB550 basket case cafe rebuild
http://forums.sohc4.net/index.php?topic=106235.0
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http://forums.sohc4.net/index.php?topic=89745.0

Offline Deltarider

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Re: Carburetor Vent hose -- where to get?
« Reply #9 on: February 18, 2013, 08:30:53 AM »
To whom it concerns. I dunno about the other CB's but 550s quite often suffered from vent tubes that became clogged by roaddirt, others were partly closed by the rear fork, main stand or whatever and others someway or another siphoned water into the float chambers. All this the result of vent tubes too long that hang below the engineblock. Remedy is simple: cut them above the rear fork to restore driveability.
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Re: Carburetor Vent hose -- where to get?
« Reply #10 on: February 18, 2013, 06:27:44 PM »
I'd only wonder if or how washer hose would react when exposed to fuel containing ethanol. Everything I've tried in recent years (including line rated for the purpose) gets stiff, hard, and shrinks. Up until a few years ago, my 750 had the O.E. hose, and it was the best. I'd wipe the hoses periodically with WD 40 to keep them soft. Haven't tried
the latest from the Honda yet, but if it's better than the aftermarket stuff I've used recently, I'll pay the extra few bucks. I know vents and overflows only carry fumes, ....just sayin' ;)

Offline bjbuchanan

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Re: Carburetor Vent hose -- where to get?
« Reply #11 on: February 18, 2013, 06:48:44 PM »
Well I can atleast vouch for 6 months of trouble free use. I have no overflow problems or anything but the hoses still seem like new and they are small so it is a nice fit to the carbs
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers