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I think I've seen this somewhere but I can't remember but this looks like an easy make anyone know where you can buy the fittings for our holes?



http://www.r6messagenet.com/forums/r6-how-guides/136367-how-make-your-own-carb-sync-tool.html
I have one just like that one and it is garbage. It will suck the water out into the engine (no big deal as it removes the carbon). Also all those fittings are expensive. I am making another type with 4 jam jars. Drill 2 holes in each lid then place copper tubes into the holes (4" & 2"). The tubes are glued to the lid. The short tube hose goes to the intake while the long tube hose goes to the the other long tube in another jar. "T" fittings connect the long tubes between the jars. Fill the jars up half way with colored water (food coloring). If there is an imballance between the intakes the water will go to the lowest pressure side through the hoses but cannot be ingested into the engine through the short tubes.

This tool can be build with different components like fittings instead if tubes

Advantages:

Does not need 4" of plywood.

Extremely accurate

Cheap to build <$20
 

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.. where you can buy the fittings for our holes?


If you want to DIY the whole project - find some small metal tube and buy the correct sized metric hex head bolts. Clamp a bolt in the vice, drill a hole the same dia as the tubing a mm or so into the head and then a smaller hole all the way through. Cut tubing to length and braze/solder/epoxy together. Not pretty but it works.



 
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I used to use a complecated device like this one for my BMW r80rt....haven't used it on my GL yet as it's to cold out and the bike is not running..



It is just a section of 1/4 pvc tubing approx 16 ft long ,doubled around and filled with chainsaw bar oil, add a bit of varsol if it is too slow to react.



when the fluid evens out(or very close)while the bike is running at idle and above 2500-3000 RPM.then I would consider the carbs fairly well synced.





For the adapter screws ,local Honda dealer or aftermarket shop..........or make your own.



 

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I used to use a complecated device like this one for my BMW r80rt....haven't used it on my GL yet as it's to cold out and the bike is not running..



It is just a section of 1/4 pvc tubing approx 16 ft long ,doubled around and filled with chainsaw bar oil, add a bit of varsol if it is too slow to react.



when the fluid evens out(or very close)while the bike is running at idle and above 2500-3000 RPM.then I would consider the carbs fairly well synced.





For the adapter screws ,local Honda dealer or aftermarket shop..........or make your own.





+1

I made one like this and it works very well -- no need for the fittings on the lines if you're syncing a twin. (of course you need still need the fittings on the intakes)



To reduce the pulsing, you can add an inline obstruction by putting a one-inch piece of the next size smaller tubing in each line. (tip: with vinyl tubing, the ID of a given size tubing is the same as the OD of the next smallest size)
 
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