Topic: Recommendations for carb sync tool

[dave500]

what ever you use hook them all to a common steady vacuum source first to check them,be sure they all read the same or close enough to,no point otherwise,some you can adjust a little some you cant,you might use a sharpie on the guage plus or minus on any errant ones?the analogue guage type must have damper screws or youll ruin the guage plus have no idea whats going on,you don't need colourfull fancy faces.

[PeWe]

I have Mikuni Smoothbores without vacuum connections. I have to do the bench procedure and Gunson carbtune to verify.

I should choose Morgan Carbtune when al carbs easy can be compared. I'll see in the future if I'll have use for my OEM carbs. I need a new project.

[dave500]

that link was about as helpful as dog #$%* on white carpet?

[70CB750]

I have used-old school mercury sticks, emgo gauges, morgan carbtune, homemade manometer.  Morgan carbtune was the easiest to use by far, old school mercury sticks came in second.  Now if I could just convince myself that vacuum syncing cb750 carbs is even worth the time and effort,  I'd try out my Motion Pro tool.

I believe it is worth the effort, my cold idle and cold starts got much better after synchro.

[dave500]

if any four is way out itll have a terrible rattly idle?having said that youll be hard pressed to vacumm sync them to the nth degree though anyway?tightening the lock nuts makes them alter.

[70CB750]

I have those original thumb bolts on each carburetor to set the idle, quite the pain actually. Usually get it within 2 psi and thats good enough.

[dave500]

sometimes the more you try to fine tune the worse it gets?

[70CB750]

More like getting #4 to show any vacuum. Not sure what is going on there, but I have 3 the same and 4 will be way low.

[dave500]

you have the adjustment screws imbalanced to a degree,try winding that one up to get a response from it then adjust the others down to suit,your idle rpm may soar during the process,just wind it down if need be,it can be a juggling act!

[Bailgang]

Lots of chat guys      So what is the best on a need to know basis ?   cant spell
 I will only buy once        Popcorn?
Stew.

Which one is the best depends on which one suits your needs the most (personal preference) which means you yourself have to make that choice not us. I'm not trying to be rude but you've already been given a few choices all of which do what they're supposed to do and fall within your budget so you need to make up your own mind.

[windsurfed]

I have a set of Honda carb snyc guages

[Sgt.Pinback]

Do you know how old they are?


Miy HONDA gauges  on work

[koendd]

just bought a morgan carbtune.
Very easy to use.

But about the adjustment bolts, there are kinda 'loose'.
when I tighten them there is still some play on the rod and when I move them I get a different reading.

is that normal?

[Garage_guy_chris]

Simple, effective, acurate and very inexpensive, cost less then $20 to build the fluid (Automatic transmission fluid) isnt harmful to you or the engine. the second photo shows the dampers which are 0.030" mig welding contactor tips. can be built for a 4 cylinder with a few T fittings to make it split off into 4 pipes instead of 2

[Airborne 82nd]

I got the CarbMate with the optional 4-channel adapter kit as a gift.
http://www.carbmate.com/

I've had the carbtune for many years and still like them. When I got the gift I tuned the bike with the carbtune then hooked up the carbmate and the reading were  the same but the carbmate has a better resolution. Now don't ask me what is inside the carbmate I don't have a clue. 

[Brookesy in Oz]

I also have the Morgan Carbtune and it works well.

[Wobbly]

That's what I have been using for decades. Most shops here use the very same. You get what you pay for.

http://www.boehm-synchrontester.de/english_language.html

[PeWe]

With fuel tank too!
http://www.boehm-synchrontester.de/english_language/pricelist_english.html

Which is easiest to use, 4 separate gauges with needles or parallel tubes like Carbtune, Motion pro, LED style TecMate TS-81
http://www.ebay.com/itm/261799513525?_trksid=p2060778.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.com/itm/MOTION-PRO-MULTI-CARB-SYNC-PRO-CARBURETOR-SYNCHRONIZER-TUNER-/140820871230?pt=Motorcycles_Parts_Accessories&hash=item20c993f83e&vxp=mtr
http://www.ebay.com/itm/TecMate-TS-81-VaccuMate-Workshop-Carburetor-Synchronizer-/400871655503?pt=Motorcycles_Parts_Accessories&hash=item5d55d0084f&vxp=mtr

[Deltarider]

Hi guys.
I'm looking to buy a carb sync tool. Any strong opinions on which one to buy. I'm trying to stay close to $100 or less.

Cb550K1

If you have only one bike to do, it isn't worth spending the money. A dealer can do it in 20 minutes and then you can ride tens of thousands of miles before you ever may need to balance again. I did the last 60.000 kms without having to sync. If you must, you can make your own 'Morgan' as described above for less than $ 20,-.

[Stev-o]

that link was about as helpful as dog #$%* on white carpet?

A classic Dave500 post has risen from the dead!

[drumstyx]

For the price with the exchange rate, you're probably best off going with the Morgan Carbtune. It's like $100 usd these days.

[PeWe]

The US dollar is expensive today wich means cheaper Euro buys for US people

[rotortiller]

If you calibrate them to each other in the normal range of operation prior to use they will all be super accurate. All you need is some plastic or rubber tubing, three tees and a syringe to pull vacuum and adjustable gauges. Basically you want gauges with the adjustment screws on the face.



Analog (Emgo Type) and digital gauges (industrial type) do not care if they are level and can read fine flat or upside down, you don't have to be concerned with liquid either. I like to pick my poison carefully. LOL

80-100  bucks should get you a decent hassle free tool.

[evanphi]

If you calibrate them to each other in the normal range of operation prior to use they will all be super accurate. All you need is some plastic or rubber tubing, three tees and a syringe to pull vacuum and adjustable gauges. Basically you want gauges with the adjustment screws on the face.



Analog (Emgo Type) and digital gauges (industrial type) do not care if they are level and can read fine flat or upside down, you don't have to be concerned with liquid either. I like to pick my poison carefully. LOL

80-100  bucks should get you a decent hassle free tool.

You don't even need to make a tool like this. Just hook them up one by one to the same carb and make sure they are all reading the same number. Then hook them up to all four and tune away!

[flybox1]

If you calibrate them to each other in the normal range of operation prior to use they will all be super accurate. All you need is some plastic or rubber tubing, three tees and a syringe to pull vacuum and adjustable gauges. Basically you want gauges with the adjustment screws on the face.



Analog (Emgo Type) and digital gauges (industrial type) do not care if they are level and can read fine flat or upside down, you don't have to be concerned with liquid either. I like to pick my poison carefully. LOL

80-100  bucks should get you a decent hassle free tool.

That is one messed up medical tool

+1 evanphi.  just calibrate them, one at a time, to one of the carbs.