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07-01-2015, 12:30 AM, (This post was last modified: 07-01-2015, 12:32 AM by jrslv.)
#1
Synching Carburetors using a DYI Tool
Guys,

I was going in circles not willing to shell $60-100 on vacuum meters and synch tools on the internet. But then I've found a great video on how to make one:

https://www.youtube.com/watch?v=7D_f05_a74Y

There is one common fallacy though that is repeated by people in these videos that I think is simply incorrect - that the levels in the bottle do not need to be level. That's not true. Simple physics dictate that if the fluids are not level, then the pressures in the bottles are different, something we're supposed to eliminate.
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05-01-2016, 11:30 AM,
#2
RE: Synching Carburetors using a DYI Tool
Has anyone used this set up? Results? I'm going to try it out this week on my 1100.
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05-01-2016, 06:47 PM,
#3
RE: Synching Carburetors using a DYI Tool
A link for instructions on building one of your own:

http://www.650ccnd.com/mano.htm
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05-01-2016, 11:40 PM,
#4
RE: Synching Carburetors using a DYI Tool
(07-01-2015, 12:30 AM)jrslv Wrote: Guys,

I was going in circles not willing to shell $60-100 on vacuum meters and synch tools on the internet. But then I've found a great video on how to make one:

https://www.youtube.com/watch?v=7D_f05_a74Y

There is one common fallacy though that is repeated by people in these videos that I think is simply incorrect - that the levels in the bottle do not need to be level. That's not true. Simple physics dictate that if the fluids are not level, then the pressures in the bottles are different, something we're supposed to eliminate.
i was wondering how the weight of so much liquid would affect it, most manometers use a very small column of liquid. i'v been using the vacuum gauge balancer for years with good results, i never liked the idea of my engine sucking in the fluid if something go's wrong.
Lightbulb dumb bikers don't get to be old bikers
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05-02-2016, 12:44 AM,
#5
RE: Synching Carburetors using a DYI Tool
Be sure to notice the section for the 650, use the 3/16" tubing like they say.

Use two stroke oil for the liquid, if it is sucked into your engine, no big deal.

I had my bike for about two years before I synchronized the carbs, I was amazed at how much better the performance was. It turned out my front carb was pulling in a LOT more air than the rear carb. This gadget is well worth the cost.

Once you have pulled the oil into the tubing (I used suction) it may take a couple of days for the oil to truly level in the tubing because oil from the end of the tubing from which the oil was pulled in through will be coating that section of tube and will take a couple of days to flow down to the oil in the bend.

Again, well worth the cheap cost and waiting a couple of days to use it.
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05-22-2016, 09:50 AM,
#6
RE: Synching Carburetors using a DYI Tool
   
This my syncro tool. A couple of mason jars and tubing. Works great and I like that it wont suck anything into the carbs. I couldnt find 3/16" ID tube so I used 1/4". It fits but a little loose for my liking. I used water with food colouring as well. I disagree with the original post though. I would think that once the pressures are equal, the fluid levels will stop moving no matter where they are.
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05-22-2016, 10:09 AM,
#7
RE: Synching Carburetors using a DYI Tool
(05-22-2016, 09:50 AM)DoubleD Wrote: This my syncro tool. A couple of mason jars and tubing. Works great and I like that it wont suck anything into the carbs. I couldnt find 3/16" ID tube so I used 1/4". It fits but a little loose for my liking. I used water with food colouring as well. I disagree with the original post though. I would think that once the pressures are equal, the fluid levels will stop moving no matter where they are.
mine i thought was loose, so i put small spring hose clamps on
2007 1100 custom,cobra longs and pods,doubled clutch spring.
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