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4 Gauge Motorcycle Carburetor Vacuum Synchronizer

Updated on October 20, 2014
4 Four Gauge Motorcycle Carburetor Vacuum Synchronizer
4 Four Gauge Motorcycle Carburetor Vacuum Synchronizer

Why You Should Have A Carburetor Vacuum Synchronizer

I tell you what... It is not as hard to sync or balance the four barrel carbs on your motorcycle as your mechanic may tell you. All you need is a simple 4 Gauge Carburetor Vacuum Synchronizer and you are halfway there.

The first time I had my carbs synced on my 1981 Honda Goldwing GL1100, I listened to my mechanic, who told me that it was a difficult task and that I should let a pro do it. He also charged me $75.00 to synch them. That is about the cost of a cheap carburetor synchronizer kit.

As a matter of fact, the set you see here, cost less than what it cost to have my mechanic synch my carbs.



My 1981 Honda GoldWing

Buying Carburetor Synchronizer Kits

Now, when I buy tools or equipment, I try to get the best I can afford at the time. The set of vacuum gauges you see here are more of a mid range low price set. I chose to get them over the others, due to seeing the two videos on how to sync motorcycle carbs, I posted below.

They are simple to use, and unlike some of the fluid filled ones out there, you do not have to "tune it" before you use it.

If you are looking to buy a carb balancer manometer, there are several options available. You can spend a small fortune, or you can do what I did and get the right tool for the job at a reasonable price.


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My 1981 GL1100Four Gauge Motorcycle Carburetor Carb Vacuum Synchronizer Four Gauge Motorcycle Carburetor Carb Vacuum Synchronizer
My 1981 GL1100
My 1981 GL1100
Four Gauge Motorcycle Carburetor Carb Vacuum Synchronizer
Four Gauge Motorcycle Carburetor Carb Vacuum Synchronizer
 Four Gauge Motorcycle Carburetor Carb Vacuum Synchronizer
Four Gauge Motorcycle Carburetor Carb Vacuum Synchronizer

Making Your Own Carburetor Synchronizer

I was thinking about making my own set. You can get the gauges at Harbor Freight. The tubes at Napa, and the air flow valves at a pet store. The little 5mm brass adapters for my Gl1100 (other bikes may need 6mm adapters) would have been the hardest thing to find, but you can get them online.

I could have saved ten bucks at best, but it was more work and hassle than it was worth, so I bought the set you saw above instead.

When I read the reviews on this set I was a bit worried about the needles bouncing around too much to get a good reading on my carbs. But I think those people did not know how to properly adjust the airflow valves. They can be a bit fickle.

Once you get those adjusted, it is just a matter of adjusting and balancing the carbs, and that was a lot easier than I thought it was going to be too. Just watch the videos below...

Overall, this set of carb synchronizers did a fantastic job. As a matter of fact, I found out it is the same set that my bike mechanic has in his shop. He should have at least thanked me for buying them for him, don't you think?

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