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  1. Replies
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    X2, the needles are cut to ten thousandths of an...

    X2, the needles are cut to ten thousandths of an inch, they can make 1 but 4 completely identical? Pretty d-mn difficult.
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    https://cv-performance.com/harley-cv-carburetor-tu...

    https://cv-performance.com/harley-cv-carburetor-tuning-issues

    Harley but part goes same way, it being a Keihin carb. Go to first pair of pics labeled correct and incorrect. Use the correct one....
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    You have likely deformed all pieces there. Your...

    You have likely deformed all pieces there. Your above pic orientation is correct, top of pic is same as top of carb. You put convex to concave always, the high curve in the one matches the low in the...
  4. Hey, check out the steel piece that installs over...

    Hey, check out the steel piece that installs over the parts there, it can be easily installed upside down to damage a jet holder like that. One end is slightly smaller than the other and the convex...
  5. I'd say it's not hard at all but that's after...

    I'd say it's not hard at all but that's after doing about 500 carbs of every type. It's not normal to pay that much attention to holes unless you are a gigolo.
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    The terminology is no issue, just that you are...

    The terminology is no issue, just that you are right about the 'a while' thing. I always have them on engine already and why it would never pop up as a problem. Others do differently. I need to...
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    The bending shows it was likely put in upside...

    The bending shows it was likely put in upside down. Convex end goes down, concave goes up. The jet holder has a cup end to meet the convex and thinking both ends are different diameter, looks that...
  8. Your regulator and rectifier both have problems...

    Your regulator and rectifier both have problems if they are separate units. The only way you can get true overcharging is by regulator loss of control. The rectifier if diodes are damaged will only...
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    Not really a spacer although the top serves as...

    Not really a spacer although the top serves as one. Considered part of the engine, it is a chain derailing prevention device. Should be bolted onto engine before it ever goes into frame.
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    It's up to you............

    It's up to you............
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    I have personally burned valves on a new one at...

    I have personally burned valves on a new one at 3000 miles. Don't set them as close as the service manual says, use .004"-.006" and shooting for .005" and they last MUCH longer. The service manual...
  12. I see the slight bulge on one side now. There is...

    I see the slight bulge on one side now. There is no KC model, it's either a K or a C. For an L I would use K parts. Regardless, all the carbs are closer than the specs seem to show, you can even run...
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    The plugs will run white for a while until they...

    The plugs will run white for a while until they color up. If the valves have never been set you are likely burning them, a compression test is in order. What kind of mileage? They can burn valves...
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    http://www.cb750c.com/publicdocs/SeanG/Honda_Carb_...

    http://www.cb750c.com/publicdocs/SeanG/Honda_Carb_Manual_revG.pdf
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    If you are talking about boot at BACK of carb...

    If you are talking about boot at BACK of carb that is not a butterfly, it's the slide which only lifts with vacuum and engine running. stick a finger in and under it, it should lift easily but go...
  16. I recommend checking each and every hole for...

    I recommend checking each and every hole for being open like they need to be. Cleaning does nothing if not checked for result. I say that after much time on early DOHC which often has to be cleaned...
  17. I see one possible wrong part (or three), other...

    I see one possible wrong part (or three), other than that you are not showing the important parts there. If the needle jet (jet holder) is too tight to stick the needle the needle may be damaged too.
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    'I got that thing I was so certain would make me...

    'I got that thing I was so certain would make me happy, would make me cool.'

    While I will always love bikes, that is a bit too much. NEVER rely on any physical thing to fulfill you that much. It's...
  19. Carb issue of some sort. There is no way the bike...

    Carb issue of some sort. There is no way the bike should run right with choke full on. If bike is stock with stock pipes you don't go lifting the needles up either. That's one of the ones with all...
  20. Thread: Engine Surging

    by amc49
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    107

    Glad to help. The only way to get the bikes...

    Glad to help. The only way to get the bikes running with anything approaching economy is to have the skills to do it pretty much 100% yourself. I love them and can still do it but I don't like to...
  21. Make Offer - The mufflers are not even the same design even if...

    The mufflers are not even the same design even if one slipped on, which it doesn't.
  22. Thread: Engine Surging

    by amc49
    Replies
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    107

    I can't even put a proper number to it. The...

    I can't even put a proper number to it. The exhausts go for commonly $30 each at 8 and the intakes half that but intakes often can be lapped in to save them. Valvework on head if needed $250. The...
  23. Thread: Engine Surging

    by amc49
    Replies
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    107

    If he set them and the engine did not go to...

    If he set them and the engine did not go to revving high again the valves (at least some of them) are likely damaged already. Why he lost interest. But then I knew that as likely already, getting...
  24. Make Offer - You never mention your exact model you want pipe...

    You never mention your exact model you want pipe for. On Nighthawk of the year here there is NO clamped muffler, the entire twin pipe and muffler assembly for one side is all one piece. All welded,...
  25. Thread: Engine Surging

    by amc49
    Replies
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    107

    You can pretty much forget timing issues of any...

    You can pretty much forget timing issues of any type if the engine is hitting on all 4 cylinders. The ignition timing is electronic and does not vary and the chains don't jump either.

    The carbs...
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