Carb Sync Preferences??

Joined
Apr 8, 2026
Messages
22
Age
25
Location
Japan
Bike
ST1100
Hi all,
I am thinking of doing a carb sync on my ‘91 st1100 just as a normal maintenance check.

I have a vacuum gauge set but I’ve never been a fan of fiddling with hoses and the like.

I saw a few videos recently of people using a SK Syncrometer and I feel like that might be much easier to deal with than vacuum hoses.

Has anyone had any experience syncing carbs with one of those? What was it like?

I’m considering purchasing one to try it out but I’m not too sure.

Thanks!
 

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Thanks! Looks cool but unfortunately doesn’t seem to be available in Japan…
This might be your object of desire then:
(I inherited the old black version with the monochrome LCD 😎 )

 
The SK Syncrometer is all I've used for years.
Obviously not as precise as the gauges and stuff but it will get it close enough for most folks.
Interesting! Is it worth adding to my toolkit? How much time do you think it saves compared to vacuum gauges?
 
I have a 4 gauge set from Amazon, only thing,needed to Teflon tape the screws in the restriction valves. You will also want a long #2 JIS screwdriver.
Cost was about 40 Canadian dollar.
 
I’ve been using normal gauges but just not a fan of dealing with vacuum hoses.
Then you know how they can act quite hyper-nervous... ;)
The Morgan Carbtune needs to be hung 100% vertical (hence I've an IV-stand in the shop...)
The electronic ones have a HIGH/LOW sensitivity/damper switch, easing the procedure...

I also have a synX Classic, which is hyper nervous, thus drives me a little nuts at times...

shop_synchrontester_synX_Set_-_Lieferumfang_800x600-800x800.png
 
I have a 4 gauge set from Amazon, only thing,needed to Teflon tape the screws in the restriction valves. You will also want a long #2 JIS screwdriver.
Cost was about 40 Canadian dollar.
how long would you recommend? I have a screwdriver that’s about 10cm and a little 5cm extension but any longer and I’ll have to hop out to buy another one.
 
Then you know how they can act quite hyper-nervous... ;)
The Morgan Carbtune needs to be hung 100% vertical (hence I've an IV-stand in the shop...)
The electronic ones have a HIGH/LOW sensitivity/damper switch, easing the procedure...

I also have a synX Classic, which is hyper nervous, thus drives me a little nuts at times...

shop_synchrontester_synX_Set_-_Lieferumfang_800x600-800x800.png
Ahh I see. My gauge set has an adjuster (I think it just closes the valve a bit) to ease up the twitchiness but digital sounds like a pretty nice upgrade too!
 
Trying to edit my last post, needs to be long enough to clear the Air cleaner, which I leave on. Bright flash light helps to see the adjuster screws
 
Interesting! Is it worth adding to my toolkit? How much time do you think it saves compared to vacuum gauges?
A ton - it takes longer to remove the body work and air cleaner than it does to sync with the Syncrometer. ;)
 
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