DIY synch tool - Kawasaki Versys Forum
 
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post #1 of 11 (permalink) Old 09-30-2008, 11:38 AM Thread Starter
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DIY synch tool

Can I make my own with a couple of vacuum guages? Has anyone here done this? Thanks

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post #2 of 11 (permalink) Old 09-30-2008, 11:49 AM
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If you have a couple of gauges, what are you trying to make? The "sync tool" that some people make is used in place of actual vacuum gauges. If you've got two gauges, hook one each up to your vacuum ports on the two cylinders and see what you've got. The only thing to watch for is whether the two gauges are calibrated correctly. I might use each gauge on one cylinder to see if they read the same, then hook both up and tune away.
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post #3 of 11 (permalink) Old 09-30-2008, 12:26 PM Thread Starter
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Didn't realize it would be that simple. Any idea of what the range of the guages should be? Thanks

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post #4 of 11 (permalink) Old 09-30-2008, 01:50 PM
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post #5 of 11 (permalink) Old 09-30-2008, 02:23 PM
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That is really good information in that link kawifan. Thanks for that.

Chris in Oneonta, NY
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post #6 of 11 (permalink) Old 09-30-2008, 02:24 PM Thread Starter
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Genius! I love simple solutions!

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post #7 of 11 (permalink) Old 09-30-2008, 02:51 PM
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The bottle method works better, easier to show level and with no worries you're going to suck anything you don't want into the intake. However it does require that you buy and consume at least two beers.

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post #8 of 11 (permalink) Old 09-30-2008, 05:36 PM
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The old manometer I used is of the same design but about 2 feet tall and uses coolant instead of water as it's a bit heavier and colored. There is also a restrictor in the hose on both sides near the top to reduce the pulsing for a more stable reading. They're metal plugs with a tiny hole in the middle... If you build the DIY gauge, you might want to try sticking an equal lenght of a pen's plastic ink cartridge that has the insert in the end. It fits pretty snuggly in 5/32" (3.83 mm) ID hose, in both sides near the top. It would also reduce the risk of ingesting enough water to cause hydro-lock and bend a connecting rod, which could pretty much ruin the day...

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post #9 of 11 (permalink) Old 09-30-2008, 09:31 PM
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Years ago I tried to use vacuum gauges to do a carb sync - don't bother, the needles bounce all over the place as the pressure in the intake changes and the gauges are not cheap - just buy the right tool with the liquid in the tubes instead and save yourself the headache.
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post #10 of 11 (permalink) Old 10-01-2008, 08:39 AM Thread Starter
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Years ago I tried to use vacuum gauges to do a carb sync - don't bother, the needles bounce all over the place as the pressure in the intake changes and the gauges are not cheap - just buy the right tool with the liquid in the tubes instead and save yourself the headache.
Actually... what prompted the question in the first place is a local farm supply store has guages for $2.99 each... Just the guage, no nipples, hoses or anything else....

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post #11 of 11 (permalink) Old 10-02-2008, 10:33 PM
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I have an old mercury tube carb sync tool. it works very well as long as you don't rev the motor too fast and suck up the mercury out of the tube. I believe I paid about $25 for it and it works with 2-4 carb setups very well.

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