Throttle body sync

[Jblk9695]

This is using a Morgan Carb Tune.
First warm up the engine and then prop up the tank. It can be done without removing the faring inserts but there are just 2 screws holding them and you don't need to stretch anything to raise the tank.
Its hard to see in the photo but the Carb tune is hanging from the left grip.

Hook up the hoses, there are 2 plugged vacuum hoses on each side, the ones with the purple spot is number 1 on the left side and number 4 on the right.
I didn't have the correct adapter for the FZ's hoses so I just used some 5/32 OD brass tubing and some wire ties to keep it in place, it fit the FZ's hoses just fine but was a little loose on the Carb tune.

These are the adjustment screws, do not mess with number 1 as it is the one you adjust the others to. If you can't see the numbers it is 1 top left, 2 bottom left, 3 top right and 4 bottom right.

Just adjust a little at a time and get as close as you can to the number 1 reading. Make sure the engine is up to operating temp as the readings will vary as the engine warms up. Also rev the engine to 4-5k and watch the readings to make sure they stay about the same.

That's about all there is to it, just make sure nothing is kinked or pinched when you put the tank in place and then ride off knowing you saved even more money by doing it yourself and you know the job is done right:thumbup:

Jerry

 

[Jblk9695]

I forgot to add that you should adjust the idle to spec after doing the sync, the idle adjust screw is on the left side of the throttle body sync block. You can see it just below the green plug in the back of the airbox. Its the one with the spring on it.

Jerry

 

[Goop]

Thanks Jerry! I should probably check mine...I'm approaching 25k miles.

 

[Motogiro]

I've got one of those TB syncs with the blue water in the tubes but it's evaporating. Mybe I can fill it with some Tidy Bowl! :rockon::spank:

Thanks for the walk through Jerry! :thumbup::rockon:

 

[Jblk9695]

Thanks Jerry! I should probably check mine...I'm approaching 25k miles.

I did find that my mirrors vibrate less at 80-85mph after the sync, so it seems to help lessen the vibes.
I can loan you the Carb tune if you don't have one or you can bring your bike to the house when ever you feel like a bit of a ride

Jerry

 

[Jblk9695]

I've got one of those TB syncs with the blue water in the tubes but it's evaporating. Mybe I can fill it with some Tidy Bowl! :rockon::spank:

Thanks for the walk through Jerry! :thumbup::rockon:

LOL, tidy bowl. That will clean the crap out of your bike if you suck it out of your sync tool, ha ha.

Jerry

 

[Norbert]

good how-to!
i just did my sync a few days ago.

might as well inspect/replace your air filter while you're at it. :thumbup:

 

[sxty8goats]

Just wondering about how long this took? Sounds like a great after work project but I'm a shade tree guy. Need the sun to help me out.

 

[jwhelan]

Thanks for the article and pics! I ordered my carbtune last week. Expecting it to arrive any day now. This article will save me a lot of time trying to figure out some of the details.

 

[TownsendsFJR1300]

Excellent write up/pic's!

The only thing I would add is to place a fan in front of the bike to keep it from over heating/fumes, etc.. Also, +1 on re-checking/adjusting the sync at 4k....

I also have the same Carbtune, works great!

 

[Jblk9695]

Just wondering about how long this took? Sounds like a great after work project but I'm a shade tree guy. Need the sun to help me out.

Probably around 20 minutes or so.
Good after work project, it will take more time to find something the right length to prop up the tank:BLAA:

Jerry

 

[spock]

Thanks a lot Jerry for the how-to

now one more entry for the big toy toys list :BLAA:

Regards.

 

[hazy]

I have my Throttle body sync a couple time,but somehow,I can't get straight across the four bars as the rev goes up.

 

[Jblk9695]

I have my Throttle body sync a couple time,but somehow,I can't get straight across the four bars as the rev goes up.

What I try and do is to hold the rpm's between 4-5k and note the readings then let it idle and adjust the one that was off, I figure if its a little off at idle it won't matter as I'm not at idle for to long I didn't get mine perfect and it still is smoother that before.

Jerry

 

[FinalImpact]

I know this is an old post, but has anyone ever done this with a single meter? Obviously it'd be painfully slow but get a reading from each, tweak and shift the hoses about? If one impacts the idle speed too much I see it taking a long time but I was thinking they should all read pretty close.

 

[windsor]

Anyone know of any auto parts stores that might rent out the carbtune or a tb sync tool? Dont feel like dropping $$$ on a tool I'll only use once or twice.

 

[Jblk9695]

Here's a method to build your own that looks to be well thought out and inexpensive(and the guys avatar is :thumbup

Build your own 4 TB Manometer (Sync tool) : Yamaha R1 Forum

Jerry

 

[Nelly]

Thanks very much for clarifying this dark art.
What do you do if #1 is way off?
Is there a baseline guide for #1 in the destruction manual?

Nelly

 

[Jblk9695]

Well to tell the truth I didn't look for a base line:spank: I just left the thing alone and adjusted the other 3, for once I actually followed directions:thumbup:

Jerry

 

[going going.....gone]

Just did my tb sync and cannot get it right at 4k revs? Could I sync it at 4k and see what it reads at idle?


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