Balancing throttle bodies ? - Triumph Forum: Triumph Rat Motorcycle Forums
Tiger Workshop (archive) Shop Talk, Ideas, Hints, and Tips for smooth running for the 885 - 885i - 955i & 1050i Tigers (Threads in this sub-forum will be progressively moved to their relevant model sub-forum)

 
LinkBack Thread Tools Display Modes
post #1 of 13 (permalink) Old 05-23-2008, 03:38 AM Thread Starter
Formula Extreme
Senior Member
 
Join Date: Feb 2006
Location: Dalgety Bay, Fife, Scotland
Posts: 573
Balancing throttle bodies ?

Now, someone mentioned the only thing they wouldn't attempt to do themselves was balance the throttle bodies, or something very similar I can't quite remember.

Is this a Triumph dealer only job or can my local guy give it a bash with any chance of success ?

Bike's overdue a 36k and it certainly hasn't been done in the last two years.

Car failed it's MOT yesterday and cost me a small fortune to fix, so looking for ways to cut my bills, dealer service costs being one of them.
FifeTiger is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 05-23-2008, 04:01 AM
Powerbike
Senior Member
 
clive955's Avatar
 
Join Date: Apr 2005
Location: Sandwich Kent England
Posts: 378
Fife tiger,

I mentioned like a few others that that was one of the few things I would not do. Kit costs too much to get a return on as they only need doing every 12,000 miles. I finished a 24,000 MILE SERVICE ON MY 02 last month and took the bike with tank and panels already off to my local do anybike garage. ( DHR Racing ) Nr Dover great guy and good prices. Admit it took a couple of days as he had to invent some longer pipework to set it up but once done the bike runs great and after my first 200 mile run the milage was back to were i expect it to be. Cost was an amazing 20 quid.

Strongly recommend that you find a good local garage and let them do these sort of jobs as nearly everything else is fairly easy to do. The only other thing i don't do is grease the swing arm. too much hastle and as i said before Iv never heard of anyone on here having problems with them even after big milage.

Green is Mean
clive955 is offline  
post #3 of 13 (permalink) Old 05-23-2008, 04:05 AM
Newbie
New Member
 
Join Date: May 2008
Posts: 4
Depends whether your local guy has a set of vacuum gauges! I've balanced the carbs on an 885 Speed Triple and the throttle bodies on a 955 Sprint ST. The carb one I could use a temporary fuel tank, but the FI one I had to find a way to prop the tank alongside the bike to allow me to connect it up (fuel pump's in the tank).

It's only a relative measure - you're just setting the two 'slave' bodies to the 'master' (the one on the right, IIRC).

A tiny bit fiddly, but not a significant job. While the bike is in bits to that point, there's only 8 more screws to check the valve clearances...

John
sabre2 is offline  
 
post #4 of 13 (permalink) Old 05-23-2008, 04:13 AM Thread Starter
Formula Extreme
Senior Member
 
Join Date: Feb 2006
Location: Dalgety Bay, Fife, Scotland
Posts: 573
My guys an ex Scottish Champion Moto Crosser, him and his brother work on anything and seem to be able to find a way to do most things.

I'll pop in for a chat and see what he says to it. He'll explain, I'll nod but not understand.

It's a sound mechanic/customer relationship !!
FifeTiger is offline  
post #5 of 13 (permalink) Old 06-02-2008, 11:19 PM
Minitwins
New Member
 
Join Date: Mar 2007
Location: Sacramento, CA (USA)
Posts: 19
Hey guys, I just balanced my throttle bodies tonight. If you can balance carbs, you can do this.

Triumph sell a wiring and hose kit to extend the reach from the bike to the tank. It is stupidly overpriced. You don't need it! I put my bike on the centerstand right next to the work bench in my shop and put the tank on the bench. Get the bike as close as you can and the fuel and power will connect right up. You don't need to worry about connecting the drain/rollover hoses nor the fuel sender connector.

After you get the tank off, you need to remove the airbox. This is easy, remove the two bolts on the back of the box and lift it off. You will need to disconnect the breather hose (bottom rear right), electrical connector (bottom front right) and pressure hose to the computer (right middle).

After you get the airbox off, you will see the air idle hoses and valve. Unbolt the valve from its mount and move it out of the way, and disconnect the hoses. Connect the hoses from your gauges (I used a Motion Pro mercury gauge) to the ports and start the bike. You will have to hold the throttle slightly open to keep it running, but it will start with all those wires disconnected. Kinda makes you wonder if you need 'em in the first place!

To sync the throttles, remember that the #1 cylinder (left side) is non-adjustable. Sync the #2 throttle to #1 by adjusting the screw between these cylinders. Once those match, sync #3 to #1 with the other adjusting screw. You might have to repeat the process a couple of times and don't forget to blip the throttle between adjustments to let the linkage settle.

Once the gauges are matched, put it back together, you're done! Check carefully that all the connectors are married up as the tank is a bit of a PITA to pull off again. My EFI light came on for a few starts probably due to readings out of range from the disconnected sensors, but it will reset itself.

Easy! Don't let the shop rake you over the coals for this. It's way cheaper to buy or beg a gauge and do it yourself.
jetpoweredmonk is offline  
post #6 of 13 (permalink) Old 06-03-2008, 08:31 AM
Formula Extreme
Main Motorcycle: 2013 Tiger Explorer
Senior Member
 
Join Date: Apr 2003
Location: Clute, TX
Posts: 449
Other Motorcycle: 70 Commando cafe
The synchronization only affects the throttle at idle, is that correct?
littlefield is offline  
post #7 of 13 (permalink) Old 06-03-2008, 01:03 PM
SuperBike
Main Motorcycle: 1966 Triumph 5TA / T100
Senior Member
 
iansoady's Avatar
 
Join Date: Jun 2005
Location: Birmingham UK
Posts: 1,722
Other Motorcycle: 2005 Suzuki DL650
No, you're actually changing the relationship between the butterflies so the effect is all the way up. You're measuring it just over tickover though.

Ian
1966 Triumph 5TA/T100
2005 Suzuki DL650
iansoady is offline  
post #8 of 13 (permalink) Old 06-03-2008, 01:15 PM
Minitwins
New Member
 
Join Date: Mar 2007
Location: Sacramento, CA (USA)
Posts: 19
I set my throttles to be in sync with a few revs on the clock. They were straight across the board at 5000-7000RPM. This meant that they were very slightly off at idle. That's fine, you can't tell any difference anyway, what with that nice lumpy triple idle! Love it! Makes sense to me that you'd want them to be in perfect sync when the engine is putting out power.
jetpoweredmonk is offline  
post #9 of 13 (permalink) Old 06-08-2008, 02:28 PM
Newbie
New Member
 
Join Date: Jun 2008
Posts: 3
carb balance

Quote:
Originally Posted by jetpoweredmonk View Post
Hey guys, I just balanced my throttle bodies tonight. If you can balance carbs, you can do this.

Triumph sell a wiring and hose kit to extend the reach from the bike to the tank. It is stupidly overpriced. You don't need it! I put my bike on the centerstand right next to the work bench in my shop and put the tank on the bench. Get the bike as close as you can and the fuel and power will connect right up. You don't need to worry about connecting the drain/rollover hoses nor the fuel sender connector.

After you get the tank off, you need to remove the airbox. This is easy, remove the two bolts on the back of the box and lift it off. You will need to disconnect the breather hose (bottom rear right), electrical connector (bottom front right) and pressure hose to the computer (right middle).

After you get the airbox off, you will see the air idle hoses and valve. Unbolt the valve from its mount and move it out of the way, and disconnect the hoses. Connect the hoses from your gauges (I used a Motion Pro mercury gauge) to the ports and start the bike. You will have to hold the throttle slightly open to keep it running, but it will start with all those wires disconnected. Kinda makes you wonder if you need 'em in the first place!

To sync the throttles, remember that the #1 cylinder (left side) is non-adjustable. Sync the #2 throttle to #1 by adjusting the screw between these cylinders. Once those match, sync #3 to #1 with the other adjusting screw. You might have to repeat the process a couple of times and don't forget to blip the throttle between adjustments to let the linkage settle.

Once the gauges are matched, put it back together, you're done! Check carefully that all the connectors are married up as the tank is a bit of a PITA to pull off again. My EFI light came on for a few starts probably due to readings out of range from the disconnected sensors, but it will reset itself.

Easy! Don't let the shop rake you over the coals for this. It's way cheaper to buy or beg a gauge and do it yourself.
Hi there, I just bought a 99 tiger and as im changing spark plugs and filters, i thought its a good idea to balance the carbs too. Is the method you described gona work on 99 tiger, coz I think mine fuel injected version. m?

cheers,
Algis
tiger LT is offline  
post #10 of 13 (permalink) Old 06-08-2008, 03:02 PM
Supersport 400
Main Motorcycle: 02 speed triple
Member
 
Join Date: Apr 2008
Location: angus
Posts: 84
Other Motorcycle: 550 Zephyr
If its a carb model you can balance them in the normal way with a set of vacume gauges.

If it is an injection model although you can balance the bodies in a similar way with a good set of guages you can not re-adjust the idle speed mechanicaly it can only be done digitaly with the triumph equipment as far as I know.

If the bike is running well then it probably does not need done anyway.

Last edited by Squeek; 06-08-2008 at 03:06 PM.
Squeek is offline  
Sponsored Links
Advertisement
 
 

Quick Reply
Message:
Options
All posts must adhere to Forum Rules

Register Now



In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
How to sync throttle bodies? fryingtonite Speed Triple Forum 17 03-17-2009 09:09 PM
Balancing injectors/ throttle bodies on a 01 Triumph Sprint ST Tequila1 Maintenance & Workshop Talk 16 02-04-2009 09:02 AM
Balanced my throttle bodies CLB Sprint Forum 27 03-28-2008 11:16 AM
Leaking throttle bodies BJ Sprint Forum 2 09-30-2006 04:38 PM
Has anyone synchronized the throttle bodies on their own? CharlestonRider Sprint Forum 2 07-11-2006 12:42 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome