Carb tune 2

[tOngEh]

Im interested in this particular product.

It works on any bike even FI bikes.

Just wanna know does it do the job of A/F ratio balancing?

What do the 4 mecury stick shows?

[tOngEh]

Any updates?

[Guest Sotong]

Im interested in this particular product.

It works on any bike even FI bikes.

Just wanna know does it do the job of A/F ratio balancing?

What do the 4 mecury stick shows?

 

It is just a 4 column vacuum gauge and the latest version uses silver inner tubes in place of mercury. It cannot measure A/F ratio but measures the compression in the cyclinders. The purpose is to allow synchronisation of the intake into the cyclinders of each carb in multi-carb systems such as on my ST which has got 4 CV carbs. Can be used for 2 carb systems also. FI bikes I think they have sensors to do the job and is more precise as in the hooked up computers can tell absolute pressure values. In other words, they don't need this. This gadget only shows relative pressure levels between the cyclinders with no absolute values to talk about.

 

Its on my wish list as well... Around SGD150 if I am not wrong. Gary has one. I always wash my carbs without synchronising them, now they are a bit rough... if you intend to get one, can drop me a mail? Thanks!

[tOngEh]

If it does not tell the A/F ratio, then it means that we still need to go back to our mechanic to tune our bikes?

 

So does this devices actually take care of our normal servicing?

[Guest Sotong]

A/F (Pilot screw) adjustment is trial and error for the common house mechanics like myself, this gadget takes care of the carb synchronisation part. IMHO, its a good gadget to own if you do maintain your carb at home.

 

BTW, most mechs I have seen working on A/F also do by trial and error. Prob is the adjustment depends on what you want and your riding habits. End of the day, not uch different if you maintain your carb and sent it to mechs. A solid A/F job will use CO level detectors at the exhaust and cyclinder compression values to do calculations then adjust. Not just turn the pilots out how many times like what many of us are doing. This precise A/F tunings I have read before only for race fanatics, never had the priviledge to see it being done.

[S750WP]

A/F (Pilot screw) adjustment is trial and error for the common house mechanics like myself, this gadget takes care of the carb synchronisation part. IMHO, its a good gadget to own if you do maintain your carb at home.

 

BTW, most mechs I have seen working on A/F also do by trial and error. Prob is the adjustment depends on what you want and your riding habits. End of the day, not uch different if you maintain your carb and sent it to mechs. A solid A/F job will use CO level detectors at the exhaust and cyclinder compression values to do calculations then adjust. Not just turn the pilots out how many times like what many of us are doing. This precise A/F tunings I have read before only for race fanatics, never had the priviledge to see it being done.

 

There is a kit in UK for the home mech to tune the mixture screw called the colour tune, its a spark plug with a transparent window at the top, which allowed the user to peep inside the combustion chamber to see the colour of the flame to adjust the mixture screw accordingly.

 

Will need a special tool to adjust the mixture screws accordingly while the carb is on and the engine running.

[tOngEh]

So to conclude that this devices do not actually help out in normal mthly servicing.

By the way is carb sync more important then A/F ratio?

Sotong how u learn the art of carb tunning???

[S750WP]

So to conclude that this devices do not actually help out in normal mthly servicing.

By the way is carb sync more important then A/F ratio?

Sotong how u learn the art of carb tunning???

 

If the carb is not syn/balance, the bike will not accelerate smoothly because the mixture of fuel+air going into each cylinder will be unequal resulting in the cylinders fighting each other for fuel+air.

 

This device is useful if you clean ya own carb, and for some bikes known to be out of syn easily.

 

Equally important is the A/F ratio, if the mixture is incorrect the combustion in the chamber will not be efficient and thus the bike will under perform. The A/F ratio is diff to measure, normally using a O2 sensor welded inside the exhaust and the gadget is not cheap.

 

A dyno run will show the A/F ratio, torque and BHP of ya bike.

[Guest Sotong]

There is a kit in UK for the home mech to tune the mixture screw called the colour tune, its a spark plug with a transparent window at the top, which allowed the user to peep inside the combustion chamber to see the colour of the flame to adjust the mixture screw accordingly.

 

Will need a special tool to adjust the mixture screws accordingly while the carb is on and the engine running.

 

I have heard of colour tune from Bjorn but never see it before.

 

Special tools to adjust the pilot is a bendable screw driver. However, Philip type pilot screws can be hard to turn. Thats perhaps why ST and S4 use D type pilot screws.

[S750WP]

There is a kit in UK for the home mech to tune the mixture screw called the colour tune, its a spark plug with a transparent window at the top, which allowed the user to peep inside the combustion chamber to see the colour of the flame to adjust the mixture screw accordingly.

 

Will need a special tool to adjust the mixture screws accordingly while the carb is on and the engine running.

 

I have heard of colour tune from Bjorn but never see it before.

 

Special tools to adjust the pilot is a bendable screw driver. However, Philip type pilot screws can be hard to turn. Thats perhaps why ST and S4 use D type pilot screws.

 

Can be bought in this website http://www.gunson.co.uk/acatalog/Gunson_Ca..._Control_5.html

 

Cost is 30 pounds plus another 30++ pounds to ship here.

[Guest Sotong]

Can be bought in this website http://www.gunson.co.uk/acatalog/Gunson_Ca..._Control_5.html

 

Cost is 30 pounds plus another 30++ pounds to ship here.

 

Ya, I found this site as well. 30 pounds for shipping ah... might as well kill me... Carbtune only 2 to 3 pounds for shipping...

 

This site has the instructions.

 

A good gadget, if only it was cheaper...

[Guest Sotong]

So to conclude that this devices do not actually help out in normal mthly servicing.

By the way is carb sync more important then A/F ratio?

Sotong how u learn the art of carb tunning???

 

How to learn? Practise lor... Play around with the mix on my Steed in the past. Got to hear the firing rthym hard for some time, remember it, adjust, then go ride round to rev above 3kto 5k to see if it is okay for your riding, come back check plug color, then adjust and listen again... Not easy... However, the adjustment based on riding can give the real conditions unlike in some shops, they just adjust and rev on the spot which just adjust A/F based on idle, no loading. Color tune is also stationary adjustment. Haven't tried doing it for my ST though. Cos I cannot access the pilots as a special D socket is needed.

 

But as long as you don't get too rich or too lean you are okay. I think the toughest part I've faced is to clean the plugs for reuse and fear of stripping the hot plug housing threads.

 

I would say that they do help out lor, at least more pro lah, not just guessing. Carb syn can be done with carb washing once in 3 months or 6 months. No need to do monthly lah, can get very paranoid ah.

[tOngEh]

Still abit hard for me!

So for normal servicing, our aim is to sync carbs and even out the A/F ratio.

The colour tune is to actually observe how our plug is burning and that determines the A/F ratio.Am i right?

 

So to complete our servicing both of this devices must be use.

[Guest Sotong]

Still abit hard for me!

So for normal servicing, our aim is to sync carbs and even out the A/F ratio.

The colour tune is to actually observe how our plug is burning and that determines the A/F ratio.Am i right?

 

So to complete our servicing both of this devices must be use.

 

I would say that if you owned the two, you should be doing a better and more professional job than most mechanics.

[tOngEh]

So is my conclusion right???

 

But due to the lack of knowlegde and guidance from old birds like u, im not able to do so!

[Guest Sotong]

So is my conclusion right???

 

But due to the lack of knowlegde and guidance from old birds like u, im not able to do so!

 

Yes and there will always be a first time.

[khoa9876]

where to buy digital carb sync? and tools

[coolone]

Very expensive..Cost about 900..

[khoa9876]

is it working better or more accuracy than Carbtune Pro? Give me your advise? Where to buy it? It is better than dial sync??