'77 CB 750 Project
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'77 CB 750 Project

This is a discussion on '77 CB 750 Project within the Technical forums, part of the Caferacer.net Forums category; Hello All, I am new to the cafe bike world but I have been ridding since I could walk....maybe a little before that even! I ...

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  1. #1
    Junior Member Wiley_the_coyote's Avatar
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    '77 CB 750 Project

    Hello All,

    I am new to the cafe bike world but I have been ridding since I could walk....maybe a little before that even! I love bikes, especially older ones. I recently purchased a '77 CB 750 and have had a blast riding it and slowly converting it to a cafe bike. I love the performance for such an old bike but I want to upgrade my brakes and suspension. I am looking at swapping out my front end for a more modern suspension and dual disk brake set up. Any suggestions on a good modern front end to swap to?

    Thanks in advance!

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  2. #2
    Senior Member bmartin's Avatar
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    I'd recommend leaving the stock front forks - I would add the dual disk with steel lined brake lines. You could add performance springs and change the fork oil to 20-50w.
    Bob - Palmyra NY
    2 - 69 CB750, 1 Turbo
    1 - 71 CB750

  3. #3
    Junior Member Wiley_the_coyote's Avatar
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    Why do you say that? If I stay with the stock front end how can I install dual disk brakes? Thanks for the reply btw.
    Last edited by Wiley_the_coyote; 02-18-2014 at 10:46 AM.

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  5. #4
    Junior Member Wiley_the_coyote's Avatar
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    Well this forumvhas been overwhelmingly helpful......
    77 CB 750

  6. #5
    Senior Member o1marc's Avatar
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    Quote Originally Posted by Wiley_the_coyote View Post
    Why do you say that? If I stay with the stock front end how can I install dual disk brakes? Thanks for the reply btw.
    Here's the short reply from Geeto on how to convert to dual discs:
    "Ok,

    So here are the options for a SOHC 69-76 K or F bike:

    1) Convert your existing setup. The hard part here is figuring out the speedo drive. The old way was to get K0 parts but since they are hard to come by these days you will have to modify your existing setup or test fit cb550 parts till they fit (I know there is at least one year that works but I don't know what year - perhaps 74?).

    some links:
    http://www.sohc4.us/forums/index.php...1561#msg171561

    www.sohc4.us

    2) Get a 1975-1977 GL1000 Goldwing front end. You will need everything from the triple trees to the brakes. This is a bolt on but you are on your own as to how to mount the gauges.

    AS for DOHC parts on SOHC bikes. You can use the DOHC F swingarm, but you will need to cut down the pivot point to fit (not hard, just take careful measurements). The front end I do not think is a bolt on but the later 77-78 SOHC F's used a similar front end that is a bolt on (provided you get the trees). I am not sure about the chain line, but I think if you use a 1979 wheel it may not be a problem.

    All the F bikes are rear disc. YOu can get a comstar with drum for the rear but it will have to come from a K or C and it will likely be 16".

    The easiest way I can think of for putting a rear Disc on an early K bike is to get a 1975-76 F rear end (the whole thing, swingarm to rim). It will be a spoked rim and it will bolt into your frame. The only mod you will have to do is make a mount for the master cylinder for the rear brake.

    Personally, if I were you I would look for a 1975-77 GL1000 (with spoked rims the comstar won't work) do get you dual disc up front and keep your drum in the rear. Honda discs from this era were succeptible to decreased braking in the rain and the drum doesn't have those problems. If you must have a rear disc then look for the 75-76 F to snatch a setup from.

    IF you really really want comstars I would look for a 1977-78 F rolling chassis in your area and just strip the front and rear to work on your bike. Be warned the 1977-78 front end pieces are not interchangible with the earlier pieces you will need the trees to convert. The same goes in the rear. The general rule is that if it has comstars then it won't work with spokes. Once you have the comstars if you want better brakes you can upgrade to the 1982 2 piston calipers on the cb750F and 900F"

    I just realized this is for up to 76 models and doesn't apply to your 77 but it's good info to have.
    Last edited by o1marc; 02-23-2014 at 09:40 PM.
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  7. #6
    Junior Member Wiley_the_coyote's Avatar
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    Thank you.
    77 CB 750

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