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Slide Valve starting point on carburetor

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16 Jun 2022 15:45 #868927 by Rick72
I have a question and it might be a stupid but i have to ask anyway. I am currently rebuilding a set of VM26SS carbs. I was wondering if there is a measurement of the slide valve off the carb body on the engine side. I would think there is a minimum and maximum starting point for them that can be done to get them close before you install them and synchronize them on the bike. Any help would be appreciated. 

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  • SWest
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  • 10 22 2014
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16 Jun 2022 16:19 #868931 by SWest
Replied by SWest on topic Slide Valve starting point on carburetor
It's called bench sync. I use a piece of irrigation wire under the slide and make them all the same. Some carbs have a 'lead" carb that is fixed so you adjust that one using the idle stop screw then adjust the rest to match.
Steve
kzrider.com/forum/3-carburetor/597129-bench-sync-cv-32-s#661030
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16 Jun 2022 16:29 #868933 by Rick72
Replied by Rick72 on topic Slide Valve starting point on carburetor
Steve
Thanks for the answer. You wouldnt happen to know the diameter of the irrigation wire would you?

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16 Jun 2022 16:52 #868934 by Nessism
Replied by Nessism on topic Slide Valve starting point on carburetor
I just eyeball the slides to get them close.  Open about 1/8" open is about right for the first start.  Then do a vacuum sync on the bike, and of course set the throttle stop for a nice idle.
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  • SWest
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16 Jun 2022 17:35 #868935 by SWest
Replied by SWest on topic Slide Valve starting point on carburetor

Steve
Thanks for the answer. You wouldnt happen to know the diameter of the irrigation wire would you?

I think it's 22 gauge. Just regular irrigation wire. The idea is to get them close then sync them or not. Jeff Z1E says he just bench syncs his with a higher idle. The smaller fours need vacuum sync or they'll rattle like hell at idle. 
Steve
 
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  • Scirocco
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17 Jun 2022 01:31 #868954 by Scirocco
Replied by Scirocco on topic Slide Valve starting point on carburetor

Steve
Thanks for the answer. You wouldnt happen to know the diameter of the irrigation wire would you?
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17 Jun 2022 20:14 #869003 by TexasKZ
Replied by TexasKZ on topic Slide Valve starting point on carburetor
22 AWG is about 0.645 mm.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
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