 vacum line added to carbs
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Joined: Apr 2006
Posts: 172
Adjunct
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OP
Adjunct
Joined: Apr 2006
Posts: 172 |
i have read but cannot find that some of you guys added a vacum line to the carbs, do you connect the line from one carb to the other, and what does this do for the bike?
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Re: vacum line added to carbs
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Joined: Jan 2005
Posts: 12,877
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 12,877 |
Yup you got it. And it smooths out the idle.
Benny
Black & Silver '02
Too many mods to list
Not enough miles ridden
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Re: vacum line added to carbs
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Joined: Jun 2006
Posts: 476
Adjunct
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Adjunct
Joined: Jun 2006
Posts: 476 |
But wait...the plugs on the carbs or the plugs on the manifolds?
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Re: vacum line added to carbs
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Joined: Apr 2006
Posts: 172
Adjunct
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OP
Adjunct
Joined: Apr 2006
Posts: 172 |
on the carbs is were i put mine.
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Re: vacum line added to carbs
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Joined: Jan 2005
Posts: 12,877
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 12,877 |
Either one, I did it on the carb side.
Just an FYI... I did mine out of necessity when I was up in Vermont and a vacuum cap let go. The local autoparts store (where I worked as a kid) didn't have any small vacuum caps, so he gave me 6 inches of hose to connect them and I pocketed my spare cap. Always a good idea to have spares 
Last edited by bennybmn; 08/04/2006 10:24 AM.
Benny
Black & Silver '02
Too many mods to list
Not enough miles ridden
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Re: vacum line added to carbs
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Joined: Jan 2005
Posts: 8,639 Likes: 3
Old Hand
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Old Hand
Joined: Jan 2005
Posts: 8,639 Likes: 3 |
The manifold is probably best. You have to remove the hose to balance the carbs and the manifold fittings are a little easier to reach. You just pop the hose off and connect the balancing guage.
Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python
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Re: vacum line added to carbs
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Joined: Aug 2005
Posts: 2,525
Loquacious
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Loquacious
Joined: Aug 2005
Posts: 2,525 |
So the main purpose for doing this is to smooth out the idle, nothing else?
Erwin
05 America
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Re: vacum line added to carbs
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Joined: Jan 2005
Posts: 5,172
Saddle Sore
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Saddle Sore
Joined: Jan 2005
Posts: 5,172 |
More flags
More fun!
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Re: vacum line added to carbs
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Joined: Aug 2005
Posts: 431
Adjunct
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Adjunct
Joined: Aug 2005
Posts: 431 |
I did this with my old AI hose and it had a pulsating whistle sound as it ran. Real annoying. Took the hose off and blew through it and out came the same sound. So I used another black hose and now it has a pulsating sucking sound to it [shwt, shwt, shwt]. While the bike is running I can pinch the hose between my fingers and the noise goes away. What's with that. Is this normal?
BikerT
Willy-2003 BA
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Re: vacum line added to carbs
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Joined: Jan 2005
Posts: 8,639 Likes: 3
Old Hand
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Old Hand
Joined: Jan 2005
Posts: 8,639 Likes: 3 |
Probably normal. With the hose in place, both cylinders pull from both carbs. This balances out the mixture and that is why the bike idles nicer.
Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python
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Re: vacum line added to carbs
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Joined: May 2006
Posts: 1,025
Learned Hand
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Learned Hand
Joined: May 2006
Posts: 1,025 |
The AI hose has a small brass restrictor in the line. You have to remove that. Squeeze the hose and you will find a tough spot. Thats it, work it out and whala you have a hose. The AI hose is good for draining the carb bowls also. 
06BA,-AI,NoBfls,K&NPods,TBS,155/45,2 3/4Out,SidGapPlgs,Wirsnbrs
NawImPrityFknFarFrmOkMan
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Re: vacum line added to carbs
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Joined: Nov 2005
Posts: 57
Member
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Member
Joined: Nov 2005
Posts: 57 |
I fitted a hose connecting the manifolds and a hose connecting the carbs. This helped my idling problems after i fitted a 790cc Boney Exhaust cam to my Thruxton.
Cheers........Agro
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Re: vacum line added to carbs
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Joined: May 2006
Posts: 1,025
Learned Hand
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Learned Hand
Joined: May 2006
Posts: 1,025 |
Whale Oil Beef Hooked. lmao I must admit, thats a first. The user ID that is...
06BA,-AI,NoBfls,K&NPods,TBS,155/45,2 3/4Out,SidGapPlgs,Wirsnbrs
NawImPrityFknFarFrmOkMan
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