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Thread: Carb Air box,.,

  1. #1
    CB750 Enthusiast keges335's Avatar
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    Carb Air box,.,

    Since this bike is missing the Air box,.,Should I replace this filter system .,.Or do some of you go with a different set up.?

    Thks Keith,.,

  2. #2
    Old Bike Nerd grepper's Avatar
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    Unless you enjoy a challenge, going to the stock configuration is always best.

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  3. #3
    CB750 Addict pidjones's Avatar
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    Yep, I suggest doing whatever it takes to get an airbox.
    "Love 'em all.... Let GOD sort 'em out!"

  4. #4
    CB750 Enthusiast keges335's Avatar
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    I have a 1981 Honda CB 750 K,.,What yrs will the Air boxes interchange,.,?

    Thks Keth,.,

  5. #5
    CB750 Addict pidjones's Avatar
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    Really, there are online parts listings all over. This is from Partzilla:
    This Honda*17213-425-010 HOUSING, AIR CLEANER*fits the following models and components:

    Honda Motorcycle 1982 CB750C A - 750 CUSTOM Air Cleaner

    Honda Motorcycle 1981 CB750C A - 750 CUSTOM Air Cleaner

    Honda Motorcycle 1982 CB750SC A - NIGHTHAWK 750 Air Cleaner

    Honda Motorcycle 1980 CB900C A - 900 CUSTOM Air Cleaner

    Honda Motorcycle 1980 CB750K A - 750 FOUR K Air Cleaner

    Honda Motorcycle 1981 CB750K A - 750 FOUR K Air Cleaner

    Honda Motorcycle 1980 CB750C A - 750 CUSTOM Air Cleaner

    Honda Motorcycle 1979 CB750L A Air Cleaner

    Honda Motorcycle 1982 CB750K A - 750 FOUR K Air Cleaner

    Honda Motorcycle 1979 CB750K A - LIMITED EDITION Air Cleaner

    Honda Motorcycle 1980 CB750F A - 750 SUPER SPORT Air Cleaner

    Honda Motorcycle 1983 CB750SC A - NIGHTHAWK 750 Air Cleaner
    "Love 'em all.... Let GOD sort 'em out!"

  6. #6
    Old Bike Nerd grepper's Avatar
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    If you can't find one, I have an air box. But it's missing the door for changing the air cleaner. The rubbers are in OK to poor shape. I could send you what I have for the cost of postage.

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  7. #7
    CB750 Enthusiast keges335's Avatar
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    Ok let me think about that,.,? You want to send me pics to my email.? I was told by Honda correct part # is 17213-425-020

  8. #8
    Old Bike Nerd grepper's Avatar
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    Quote Originally Posted by keges335 View Post
    Ok let me think about that,.,? You want to send me pics to my email.? I was told by Honda correct part # is 17213-425-020
    It should be, I'm actually finishing up on a 81 CB 750 K restore. I bought someone's failed project lot of almost 3 bikes, I thought I could build 2 from the lot, but I only had 1 good engine and title. I've sold most of the spares on eBay. Been thinking about pitching the air box because it's missing the door. I'll PM you my email.

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  9. #9
    CB750 Addict pidjones's Avatar
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    The final 3 digits are just superceed numbers.
    "Love 'em all.... Let GOD sort 'em out!"

  10. #10
    CB750 Enthusiast keges335's Avatar
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    I did end up getting an Airbox off of Ebay,.,

    Thks Keith,.,

  11. #11
    CB750 New Member dean_crow77's Avatar
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    It isnt hard to get rid of the Airbox. I have 2 cb750's one is an 81 k four and the other is a 79 cb750f super sport. I run velocity stacks on both. All you need to do is put a stage 3 jet kit in it. I had to fine tune the k model more than the ss. You dont have to change the exhaust to run a stage 3 but you will need 3 spacers on your needles rather then 2 as suggested.

  12. #12
    CB750 New Member dean_crow77's Avatar
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    To rebuild the carbs properly you'll need new diaphragms or you will run into full throttle issues. I've rebuilt 2 and tried everything you see online and I can tell you the best thing to do is rebuild the carbs and whatever parts you buy make sure they are genuine honda parts or you will regret it.

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