Jinkster's "how to synch your busa"

[mike1180]

If you remove that hose, yes you do.
For X Y and K1 it comes off and all the rest it is optional to disconnect it, like the Haynes says.

[elmostro]

i guess i don't have to mess with it,my bike is a 03. but i noticed when i synced with that nipple blocked i get better readings more stable reading thru all four gauges, but when i put everything back togheter and start the bike, it sounds awfull, like is missing. when i don't block the vtv nipple the readinigs are a little off is harder to get all four aligned but at the end it sound smooth and beautiful.

[mike1180]

I would tend to take it off and block it too.

[elmostro]

i synced my t-bodies blocking the vtv nipple and following J instructions, even though the bike sounds different, like is missing, the bike is running good , plugs looked perfect and i'm getting better gas mileage. THANKS mike

[KvHotDog4]

So I need to do this to my bike, however, when I go ask for a Manometer at any parts house around here they look at me like I am an idiot . WHERE CAN I GET A MANOMETER

[b4thenite]

google carbtune, or protools

[Wag]

Motion Pro makes a carb synch tool. They may call it a carb master or something.

Get the guages, not the mercury stick. If they even sell the merc stix any more.

--Wag--

[Boyer]

Does anyone have a tutorial on how to set your idle screw? Where is it located? What is the idle RPM to idle at? I am new to Hayabusa and do not know my way around. Kudos for this illustration regarding Syncing. Does anybody have an address as to where I could purchase a digital manometer?

[Wag]

Try Motion Pro - Quality Motorcycle Cables, Tools and Controls

Also, what year is your bike? If it's Gen I, the idle screw is under the tank on the throttle side of the bike. Lift the tank and set the rpms at around 1150.

--Wag--

[alakso]

Thanks for the info Bill. I'll be doing my TB sync. next Spring. And as stated above it's very important to sync your TB's. But I go one step further. I found that on my '08 FJR that the "Throttle Plates" were not synced. So I went ahead and closed all my air bleed screw and then proceeded to sync the throttle plates. I then adjusted the air screw and man did that bike run better.

Anothe option to consider instead of the mercury nanometer is the:
Morgan Carbtune Pro.
The Morgan Carbtune Pro uses calibrated steel rods instead of mercury and works great!
Here's a link to the Morgan Carbtune Pro:
http://www.carbtune.com/

[alakso]

Originally Posted by Aquaman

Wow! What a great tutorial. I would never had know about this.
Why wouldn't it come from the factory all balanced? Or does it and after some miles and mods,things change?

The Factory does the best job they can but as with any mass produced vehicle the factory can't spend to much time syncing TB's. So any new bike will have a little bit of difference in the TB's sync..

[alakso]

Here's a link to a Rider Magazine evaluation of the Morgan CarbTune Pro:

Carbtune Pro

In the article they said it worked "Flawlessly". And even with Morgan being in Belfast, Northern Ireland it only took a week for my CarbTune Pro to arrive. One note about ordering from Morgan. They don't ship to PO Boxes. Luckily for me my postal worked snagged mine before it was sent back and delivered it to my house.

And finally I checked the sync. of my Morgan CarbTune before I used it by hooking up all 4 columns one at a time to the #4 cyl.. The CarbTune sync. was dead on!

[sixpack577]

Originally Posted by JINKSTER

Synching the Throttle Bodies is an important aspect of thorough tuning and maintainance and plays a large role in how well your engine performs with respect to increased power, snappier throttle response and greatly reduced engine vibrations...also....once properly synched?...your bike will exhibit easier, more consistant start-ups with a steadier and more rythmic idle quality.

L8R, Bill.

Used to do this on the old carbureted bikes, never thought about it on FI. I would assume though not all, if any factory FI bikes are in perfect sync. Were any of the throttle bodys dramatically different from another?
Again assuming, that there wasn't dramatic difference, was there a noticeable difference in idle quality or throttle response? Thanks, cool post.