Static syncronization

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Static syncronization

wingman1946
This post was updated on .
OK I am worn down from searching for a description on how to do a static sync on my 79 750K. I do have a factory manual and am not finding it there either.....??  The plan is to pull the carb bank off the bike, clean the bowl and jets, replace the float needles, bowl seals, and blow everything out, then do a static sync before replacing the set back on the bike. Any help would be appreciated greatly.
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Re: Static syncronization

TOOLS1
Administrator
Since the slides on CV carbs are vacuum operated, and are not adjustable, I do not think they can be static synced. I know of no way to set the butterflies without using a sync gauge.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: Static syncronization

wingman1946
On 1/2/2013 1:28 PM, TOOLS1 [via Honda CB750'S] wrote:
Since the slides on CV carbs are vacuum operated, and are not adjustable, I do not think they can be static synced. I know of no way to set the butterflies without using a sync gauge.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
1976 CB 750-A X 2
1977 CB 750-A X 2
1977 CB 750-K
1981 CB 750
1995 KZ 1000 P-14
1981 KZ 750 LTD X 2
1973 CB 350
1979 CM 185 Twinstar
1987 Honda TLR 200
1982 Honda XL 80
South of Edan (Kansas City MO)



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NAML
So how do you get the carbs close enough to run so that the sync gauge can be used?
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Re: Static syncronization

TOOLS1
Administrator
If they are that far off that they will keep the bike from starting, then they are really F@#$^& up, and should be thrown away.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: Static syncronization

wingman1946
It does start but doesn't want to and needs the throttle to be bliped to keep it going and I don't think I can manage that and the sync tools. Maybe the clean out will help with the idol?? is there no way to help ensure an idol condition with start up?


On 1/2/2013 1:33 PM, TOOLS1 [via Honda CB750'S] wrote:
If they are that far off that they will keep the bike from starting, then they are really F@#$^& up, and should be thrown away.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
1976 CB 750-A X 2
1977 CB 750-A X 2
1977 CB 750-K
1981 CB 750
1995 KZ 1000 P-14
1981 KZ 750 LTD X 2
1973 CB 350
1979 CM 185 Twinstar
1987 Honda TLR 200
1982 Honda XL 80
South of Edan (Kansas City MO)



If you reply to this email, your message will be added to the discussion below:
http://honda-cb750-s.456789.n3.nabble.com/Static-syncronization-tp4034736p4034757.html
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NAML

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Re: Static syncronization

TOOLS1
Administrator
It sounds like your pilot jets are still plugged since it will not idle. The synce does not have much to do with that condition. All it is doing is making all the cylinders perform the same to balance the engine. You might also check, for vacuum leaks. That would also affect idle.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: Static syncronization

wingman1946
Thanks for your ideas Tools. I am waiting for parts for the carbs and when that is all back together I'll get back to you with an update.


On 1/2/2013 1:59 PM, TOOLS1 [via Honda CB750'S] wrote:
It sounds like your pilot jets are still plugged since it will not idle. The synce does not have much to do with that condition. All it is doing is making all the cylinders perform the same to balance the engine. You might also check, for vacuum leaks. That would also affect idle.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
1976 CB 750-A X 2
1977 CB 750-A X 2
1977 CB 750-K
1981 CB 750
1995 KZ 1000 P-14
1981 KZ 750 LTD X 2
1973 CB 350
1979 CM 185 Twinstar
1987 Honda TLR 200
1982 Honda XL 80
South of Edan (Kansas City MO)



If you reply to this email, your message will be added to the discussion below:
http://honda-cb750-s.456789.n3.nabble.com/Static-syncronization-tp4034736p4034760.html
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NAML

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Re: Static syncronization

icerigger
Download the MscGregor manual for the carb rebuild. Really good instructions and he tells how to do the initial static sync. If you're really careful, you won't need much adjustment to finish the sync process.
Livin' my life like a song.

1985 Honda Rebel 250 - "Birdie"
1979 CB750K - "Behemoth"
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Re: Static syncronization

cdaiscool
Agreed with ^^^^^^^^. Use an 'E' chord from a guitar, close the butterflies on that, and it should run really close to where it needs to be with a bit more other adjustments.

http://www.cb750c.com/publicdocs/SeanG/Honda_Carb_Manual_revD.pdf is the manual to follow for these bikes. Start around page 35, 36.

Good luck!
Turbos, Hondas, 4-bangers, what could go wrong?

Fuelly

Shiny: [...] Considering the weather you've had to put up with I'd say you get an Iron Butt award and a Frozen Nipple trophy to go along with it. First time I've ever posted the word nipple... it ends here.
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Re: Static syncronization

wingman1946
In reply to this post by icerigger
Marvelous, guys this is exactly what I am needing. Thank you-Thank you-Thank you.

On 1/4/2013 6:42 AM, icerigger [via Honda CB750'S] wrote:
Download the MscGregor manual for the carb rebuild. Really good instructions and he tells how to do the initial static sync. If you're really careful, you won't need much adjustment to finish the sync process.
Livin' my life like a song.

1985 Honda Rebel 250 - "Birdie"
1979 CB750K - "Behemoth"



If you reply to this email, your message will be added to the discussion below:
http://honda-cb750-s.456789.n3.nabble.com/Static-syncronization-tp4034736p4034835.html
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Re: Static syncronization

Lucky 1
In reply to this post by wingman1946
You cannot sync vacuum operated carbs slides on the bench. However make sure that all 4 butterflies operated by the throttle open at the same time.

We are not talking about choke butterflies.
On a Roadstar Adventure.
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Re: Static syncronization

Lucky 1
In reply to this post by cdaiscool
Those butterflies should close completely. There are usually holes in them just large enough to sustain the idle.
When all else fails BUY a manual and read it.
On a Roadstar Adventure.
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Re: Static syncronization

wingman1946
I have a factory manual. It came with the bike. I have looked completely through it and found NO INFORMATION about how to set up the carbs, other than for the idol screws. Icerigger and cdaiscool have graciously forwarded some useful information. Those sync screws have to be set somewhat correctly upon reassembly if one is to expect the engine to run and idol. Common sense there. After all it isn't uncommon for and old bike that has been sitting to not run or idol without a carb teardown.
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Re: Static syncronization

seestheday
In reply to this post by Lucky 1
Lucky, I have to disagree.   I followed the instructions in the MacGregor manual on bench syncing.  It was supposed to just get it close, but when I hooked up my carbtune sync tool I found that they were perfectly in sync.  

Maybe not everyone can get it perfect like I did because I may have been lucky, but you can definitely get very close.
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals

My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.