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Okay gang. I did it. I really did it. I disassembled my first carb! I was reading the Clymer's manual for guidance, and followed it to the letter. I took out the bank, and set it up on a table and began taking apart just the #1 carb. Since the whole think had just been cleaned, I didn't feel a need to fully disassemble it, just get at the important parts. Sure enough, I found this:
 On the left is my main jet nozzle (I think that is what it was called), for my #1 carb, on the right is one I pulled out for comparison, from the #3. Is it safe to say that was the problem? Would that be causing the cold cylinder and rough running? If so, what is the correct solution? Replace it, I assume? Can I buy just a single part like this?
Lastly, what might have caused a big dent like this to have been made? My air filter works and everything, I think, so its not like a big pebble went through or anything like that. Just curious.
Thanks for all of your help so far guys.
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Is that a dent or is it just dirty? Also, check out the MacGregor carb manual. So much better than the Clymer and it's free.
Sent from my BlackBerry device
Okay gang. I did it. I really did it. I disassembled my first carb! I was reading the Clymer's manual for guidance, and followed it to the letter. I took out the bank, and set it up on a table and began taking apart just the #1 carb. Since the whole think had just been cleaned, I didn't feel a need to fully disassemble it, just get at the important parts. Sure enough, I found this:
 On the left is my main jet nozzle (I think that is what it was called), for my #1 carb, on the right is one I pulled out for comparison, from the #3. Is it safe to say that was the problem? Would that be causing the cold cylinder and rough running? If so, what is the correct solution? Replace it, I assume? Can I buy just a single part like this?
Lastly, what might have caused a big dent like this to have been made? My air filter works and everything, I think, so its not like a big pebble went through or anything like that. Just curious.
Thanks for all of your help so far guys.
To unsubscribe from '81 CB750F trying to get it road ready., click here.
NAML
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.
My cb750 video site
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No, the brass is definitely nicked. Looks pretty clean, overall. I will check out that other manual, although I thought Clymers was not bad.
On Sep 20, 2013 8:13 PM, "seestheday [via Honda CB750'S]" < [hidden email]> wrote:
Is that a dent or is it just dirty? Also, check out the MacGregor carb manual. So much better than the Clymer and it's free.
Sent from my BlackBerry device
From: Chicago Ted [via Honda CB750'S] Sent: Friday, September 20, 2013 8:05 PM To: seestheday Subject: Re: '81 CB750F trying to get it road ready.
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Okay gang. I did it. I really did it. I disassembled my first carb! I was reading the Clymer's manual for guidance, and followed it to the letter. I took out the bank, and set it up on a table and began taking apart just the #1 carb. Since the whole think had just been cleaned, I didn't feel a need to fully disassemble it, just get at the important parts. Sure enough, I found this:
On the left is my main jet nozzle (I think that is what it was called), for my #1 carb, on the right is one I pulled out for comparison, from the #3. Is it safe to say that was the problem? Would that be causing the cold cylinder and rough running? If so, what is the correct solution? Replace it, I assume? Can I buy just a single part like this?
Lastly, what might have caused a big dent like this to have been made? My air filter works and everything, I think, so its not like a big pebble went through or anything like that. Just curious.
Thanks for all of your help so far guys.
To unsubscribe from '81 CB750F trying to get it road ready., click here.
NAML
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: BuffyAndGeorge.com. Yes, I am a lucky man.
My cb750 video site
To unsubscribe from '81 CB750F trying to get it road ready., click here.
NAML
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After a bit of research, it looks like I need to replace this nozzle, with Honda part 16166-425-671. Problem is, it appears to have been discontinued. Any suggestions as to a suitable substitute?
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Administrator
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That was caused by a careless mechanic. It definitely needs to be replaced. I might have one. I'll try to check this weekend.
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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A careless mechanic, you say? I assumed that some foreign object had gotten into my carburetor and nicked the nozzle. What might the mechanic have done differently?
On Sep 21, 2013 12:41 AM, "TOOLS1 [via Honda CB750'S]" < [hidden email]> wrote:
That was caused by a careless mechanic. It definitely needs to be replaced. I might have one. I'll try to check this weekend.
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 X 2
1976 CB 750 F
1981 CB 750
1995 KZ 1000 P-14
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
To unsubscribe from '81 CB750F trying to get it road ready., click here.
NAML
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Administrator
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Been more careful! Maybe not dropped something on it, dropped it, hit it, not let the dog chew on it...
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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Maybe, but I wasn't having any issues before my latest trip. I assumed something had happened to it to cause the damage. Perhaps that rough speed bump?
On Sep 21, 2013 12:48 AM, "TOOLS1 [via Honda CB750'S]" < [hidden email]> wrote:
Been more careful! Maybe not dropped something on it, dropped it, hit it, not let the dog chew on it...
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 X 2
1976 CB 750 F
1981 CB 750
1995 KZ 1000 P-14
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
To unsubscribe from '81 CB750F trying to get it road ready., click here.
NAML
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Alright gang. Apparrently I made another bone headed move. I went to use my Easy-Out left handed screws, designed to remove broken bolts, and I was unsucessful. This is likely because I failed to use a center punch to start the hole that I drilled, as you can see below.  So, could someone detail how to use JB weld to get this sucker out? I a hesitant, because this bolt is recessed in this manner. I would hate to find myself with a bolt hole filled with tough epoxy AND a broken bolt. Thanks guys.
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Administrator
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Just put a little on the tip of another bolt, and epoxy it to that bolt. When it sets try to screw it out. If that does not do it, remove the valve cover to get access, and weld a nut to the broken bolt. Then screw it out.
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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So, I should use little enough so that I avoid a risk of touching the actual threads themselves, I gather? I just ordered some of that putty type JB weld. Should that be strong enough, or should I also get some of the two part epoxy?
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Administrator
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Chicago Ted wrote
I installed this filter, right after I got my bike back from the shop, mostly because I thought it looked cool. In my defense, I am a dumbass. Is it any good? Which one would you recommend?
 I'm sure you are not a dumbass.
This may sound like I'm being extreme,but it's the truth. I've seen more than one car (when I was drag racing) catch fire due to those filters. Mr. Gasket has been selling them for years,but they only catch the bigger stiff and the o-rings will rot and leak if the glass housing doesn't break from vibration first. I'm not trying to be a jerk here,and others may have had great experiences with these filters, but everyone I know avoids them like The Plague. I just use a standard paper element filter that use see with the plastic housings. Vibration doesn't affect them and they filter even the smallest particles. All of my local bike shops keep them on hand for about $3 or $4 each.
Anyway,congrats and diving in to your carbs!  Feels good,don't it? Good luck man,you'll have it sorted out in no time.
The regular two part JB Weld is the strongest. The Kwik Set stuff might do the trick,but I prefer the original stuff. But,the original two part JB Weld takes a long time to set up. 24 hours to be fully cured.Also,the whole time it is curing it is kinda runny. Trying to dab it in that small of an area would be risky,IMO. It would probably just seep out and end up doing what you mentioned about having everything epoxied together.
Having your hole off center is not optimum,but it's the not the worst thing either. I always try to keep things centered but it'd hard to get it right all the time. If you use an EZ-Out on that be very careful. Most EZ-Out's and made of very brittle metal and if you snap it off in there they are nearly impossible to drill out...then you really have trouble. A left hand drill bit might be a good option here.
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Hey Tools, can I remove the valve cover without dropping the engine? I may be taking it to a welder I know to try your idea. Also, were you able to take a look for one of those nozzles you mentioned you may have laying around? If not, I can just order one I found on ebay.
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You can remove the valve cover without pulling the engine, but isn't the bolt stuck in your head?
Sent from my BlackBerry device
Hey Tools, can I remove the valve cover without dropping the engine? I may be taking it to a welder I know to try your idea. Also, were you able to take a look for one of those nozzles you mentioned you may have laying around? If not, I can just order one I found on ebay.
To unsubscribe from '81 CB750F trying to get it road ready., click here.
NAML
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.
My cb750 video site
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Yes, but the head of the bolt is broken off, so it is not holding my cam cover on.
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Ah, I think I misinterpreted your question. I thought you were only going to take the valve cover to the welder. That wouldn't do you much good, but you mean to take the whole bike, which should be fine as long as the welder have decent access to the bolt in question.
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.
My cb750 video site
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I may take the bike to the welder, have him (or both of us) take the top cover off there, and then he can get to work.
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Administrator
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Glad you reminded me. However I just went down to the basement, and dug out my box of CV carbs, and none of them had a nozzel. Sorry.
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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This post was updated on .
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Administrator
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^^^ That's pretty good advice,actually!
Welcome to the forum,Grumpy. Nice first post.
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