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  1. U

    72' into an 81'

    ok guys, so to start, im very mechanically inclined, ih am a proficient welder and im not afraid to use a sawzall to make it it fit! my question is, will a sohc motor fit in my 81' frame? i know i will need to fab up an oil bag, lines, redo my electrical, an so on and so forth! i really just...
  2. U

    NEED OPTIONS!!!!

    So I have been tinkering with my carbs for the last couple days and I can't seem to get them right. I know I will never get them perfect but I need to get them to lean out and stop back firing throught the exhaust. The bike is a 1981 cb750k, running CV carbs, 4 into 4 exhaust that goes back just...
  3. U

    speedo recommendations

    not sure if this is the right place to post this but its the best I could find. I'm looking to mount a mini speedo somewhere on my bobber. having some issues finding any good ideas. I do NOT want to mount it on the bars!!!! thinking about making a mount on the fork tube and mounting it to the...
  4. U

    speedo ratio???

    can anyone tell me, a for sure answer on what the speedometer ratio is for a 1981 cb750k. ive looked everywhere but I can not seem to find a definite answer. thanks in advance
  5. U

    Been a while since I've asked a question here

    So since tax time is here and I'm looking to finish my 81 cb750 bobber project I'm down to one last big purchase. I need a nice exhaust that isn't going to break the bank. Anybody have any suggestions. Been leaning toward the cycle x 4-2-1 race system but I'm having trouble finding any other...
  6. U

    Carb alternatives

    Quick question, will carbs from an 82 cb750 fit my 81 cb750? I don't think they will but I figured I have to ask.
  7. U

    need help with an idea brewing in my head

    So I have seen a few guys on other sites building 4-1 intake manifolds for their cb 750s. I can't seem to find what kind of carb they are using. I'm thinking it would be a fun project to try it and see what happens. Anybody have any suggestions?
  8. U

    cb750 carbs vs. cb900 carbs

    Ok. This is my first post here and from what I've read so far everybody seems really helpful. I own a custom 81 cb750k bobber that I've been building for the past 2 years. I'm finally down to just a few more parts to buy and paint it but I'm encountering my biggest issue yet, carbs! My carbs...
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