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Highlights
Universal Motorcycle Vacuum Carburetor Synchronizer
This vacuum gauge by far has the highest quality on the market, it is made in Taiwan. This set features 4 precision gauges. Each gauge is pre-calibrated by factory, air flow control is handled by needle and seat valves instead of knob it comes with both 5mm and 6mm adapters, will work with virtually all bike models with carburetors.
Comes with case, four gauges, adapters and hoses.
Come with a case for easy storage
Each gauge comes with its own air flow control
The red circled control mechanism below each gauge allows the user to adjust how much vacuum gets sucked into the gauge, it will prevent the needle bounce all over the place.
- Come with a cord to hang the gauges when in use
- Primarily made for 4 cylinder bikes, can be used on two cylinder or three cylinder bikes as well
- Comes with different length of adapters to ensure the user get to these hard to reach carbs.
This is not your ordinary gauge set!
Made in Taiwan! Shop tool quality!
- Each 2" gauge features 0-76cm/HG readings
- Each gauge has its shut off valve
- All hardware is high grade chrome finish instead of brass for longer life, higher corrosion resistance and better flow accuracy.
- Air flow control is handled by needle and seat valves instead of knobs. This helps to resist the dial indicator "bounce" associated with many other lower quality gauges.
- All Chrome Plated Extension Tubes:
- φ3.9X100L(M5*0.8) (4 pieces).
- φ3.9X170L(M5*0.8) (4 pieces).
- Cone Type Connectors:
- φ6X10X55L (1 pieces),
- φ10X53L{M6*0.75} (4 pieces),
- φ10X60L{M6*1.0} (4 pieces)
- Rubber Hoses:φ5Xφ8X 950mm x 4
Essential tools for your regular motorcycle maintenance!
An ideal tool to balance multi-carbs,ensure when at idle, your bike's carburetors are all in the same RPM range, therefor each cylinder is drawing the same amount of vacuum through the carbs,result is your bike run smoothly,develop strong power.
Tuning Procedure
1. Start the engine, let it idle and check the gauges. ( Run the engine until operating temperature is reached, carburetors must be adjusted with engine warm and the choke fully open)
2. If the needles are bounced all over the place, adjust the dial under the gauge slightly, the needles will flutter, but should not oscillate too much on the gauge faces.
3. If one gauge is out of sync, adjust the adjusting screw between carbs until the sync is obtained.
4. Shut off the bike, give the throttle a few snap-backs,let the bike settles in the new setup, and repeat the process until desired result is achieved.
Check out our shop for other motorcycle tools and parts!
Customer
Reviewed in the United States on June 6, 2024
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Customer
Reviewed in the United States on June 1, 2024
This gauge set is heavy duty and has adjustable flow. It worked perfectly for my needs and I’m sure I’ll be using it again
Crusty toenail guy
Reviewed in the United States on March 16, 2024
These gauges can be adjusted to offer almost no bouncing and they seam solid. Did a gsx600f and a gsx750f with them today. Good purchase
Anthony Logue
Reviewed in the United States on April 8, 2024
This thing works great I succeeded in synchronizing my 86 gl1200 I'd highly recommend this product worth every penny
STSCM
Reviewed in the United States on July 24, 2023
Very complete and high quality kit. Paying a little more for a kit of this quality is a smart move. Loved the built-in snubbers, they smoothed out gage fluctuations wonderfully. This set will provide years of service.Highly recommend avoid buying these rather than the cheaply made sets.
Jonathan bouchard
Reviewed in Canada on May 28, 2023
Works but not accurate
Customer
Reviewed in Canada on March 4, 2023
Solid piece of equipement, easy to set up!
Wayne Burcham
Reviewed in the United States on August 8, 2022
I had a 1982 Honda CB900 F Series Super Sport in mint condition. The owner of Apache Honda in Phoenix and his mechanics, took superb care of this classic. Before he died he told me he was going to increase its performance significantly. $3000 worth of parts later the only bike to outrun me was a 1200 Ducati. A short while later I became too disabled to ride and gave the bike to my son. He had grown up with it. His wife wouldn't allow him to ride it for the next 10 years while their kids grew up significantly. Now he's trying to get it on the rode again. The Honda/Harley mechanic has taken the engine apart and done of the necessary work but insists that nobody works on carburetors anymore, especially four that need a manometer to sync them. He said he looked everywhere for a manometer without success.I found manometers everywhere I looked and YOUTUBE videos on how to use them. Now, I needed to find the right manometer. It had to the most accurate, most highly recommended, and easy to use. This ALPHA MOTO system reigned supreme! The bike runs great!
Bill Robinson
Reviewed in Canada on July 8, 2022
We bought this one and the lower cost model to see which would be better. This unit is better built is better valves and more components for adjustability. The gauges are smaller than the lower cost ones and can be only used for vacuum. They are very well built. If you're using these gauges everyday this is a great purchase. If you're using them once every year or two by the less expensive ones they work just as well. We know, because we bought both and the staff like using the lower priced ones with the bigger dials that can also be used to test fuel pump pressure. These gauges are excellent and they're worthy of a buy but we felt were slightly pricey!
Customer
Reviewed in Canada on December 25, 2022
Works great, better than more expensive competitors, you certainly get what you pay for.
Christopher S.
Reviewed in the United States on August 24, 2021
Used this items to sync the "starter valves" on the throttle body for my Honda ST1300. Worked well for that purpose, as they had not been adjusted for over 70,000 miles. Now my bike idles much smoother. Another upside is that I can use it on my carbureted bikes. I like the fact that the gauges have a solid feel and adjust easily. The included vacuum hoses are a reasonable length, which made this kit easy to use. It also comes complete with several adapters for various makes of carbs. FYI, the inner diameter of the included hose appears to be 5mm, so I could not use the included adapters. Instead, I had to purchase a separate set of hose barbs to connect to the unit to the throttle body hoses for a leak-free connection. I don't fault the manufacturer of seller for this, as it's nearly impossible to sell a product that will fit every application. I am hopeful that this gauge set will continue to serve me well into the future.
Travis Van Vliet
Reviewed in the United States on August 11, 2014
These gauges are quite nice, but there are some draw backs to them.As mentioned by others, you can not calibrate these gauges, and along with that, there is no documentation with these gauges.I tested all four gauges before I placed them into service. One gauge was off, unfortunately. It was a substantial amount, but it was enough to obscure accuracy by about 5% at 25mmHG.When operating these gauges, tightening the collar will indeed reduce fluttering, and loosening them will allow more of a fluctuation in range. Now, when I first began using these gauges in service, the valve was so loose on one, that it came undone. It came undone since I loosened the valve, since the gauges were not reading very well. Funny thing is, if it is too loose (the valve), it won't flutter at all, making you believe that it is too tight.Aside from this, any sort of documentation for genuineness, or customer support, and etc, would have made this product much better.But all in all, the quality, the smoothness and fine grain control once you dial the gauge valves in, is superior to cheaper products. The supplied fittings are also of high quality, and they will most certainly last through prolonged use.I am just worried about future issues and not having any paperwork so I could contact the company if any problems should arise.
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