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1-19 of 25 Results
  1. Member Introductions
    Hello! I’m from Kansas City and recently just bought my first bike - a 1979 Honda CM400a. Been sitting for two years, but is in good shape. I did a full carb rebuild and was having issues with it leaking from the overflows. Replaced everything, and I’m still getting drips on one side of the...
  2. Fuel Supply and Carburation
    Hi I'm Kris, I just got a 1981 honda cm400a. I don't know much about motorcycles. But have worked on cars most of my life so I understand how they work in that aspect. I need help with things being interchangeable. My bike has VB 24 carbs on it and my buddy who sold me the bike gave me to VB...
  3. Member Introductions
    Hello everyone, thanks for letting me join the group. At 68 years old I'm new to motorcycles. I remarried 2 years ago and my wife has a 1980 CM400A Hondamatic with just 4305 miles on it that she hasn't ridden since 2005. This past winter I finally took the time to look at it and get it running...
  4. Bikes For Sale
    Hi folks I am looking to sell my starter motorcycle from back in the day. This is a completely unmodified 1981 CM400A with 1567 miles. The bike even has all the dealer stickers still on it. It sat for a lot of years and I recently retrieved it from my parents garage and went through the carbs...
  5. 1979 Honda CM400a Hondamatic

    My second bike. Had original hard bags that I moved to the 750. Has a Vetter Quicksilver fairing
  6. Wanted Parts and Bikes
    Hello, I replaced the carb intake insulators on my 79 CM400A a few years ago with some aftermarket ones from an ebay vendor and they're already getting pretty ratty. Does anyone have a good used set? I also need the left and right mufflers, both have holes in the bottom. Seems to be a common...
  7. Engine Discussion
    I recently purchased an 81' CM400A hondamatic. The bike breaks up when you go to give it gas in first but if you switch to second it will move but will bog a bit. Looked through the shop manual and saw a fix being to replace the torque converter. Purchased one and replaced the part but now I...
  8. Member Introductions
    Hello, My names patrick, I just purchased a 1980 Honda Cm400A, It ran very well up until Monday and im trying to teach myslef how to fi
  9. Member Introductions
    Greetings all, My wife and I have been wanting to get a bike for years now. I rode as a kid, but it has been 20 years since I have been on a bike (until yesterday) and my wife is in pretty much the same boat (she is also a tiny lil woman.) We both love Hondas, and wanted to start with...
  10. Fuel Supply and Carburation
    My dad and I are working on a 1981 Cm400A recently bought a pair of VB24A carburetors to replace the original ones which were broke. I have been looking for a rebuild kit to go though the thing, and poking around here I have herd aftermarket ones may not have the right jet sizes or vary...
  11. Engine Discussion
    my bikes still not running! Surprise surprise lol. Fixed spark, fixed tank (replaced), replaced battery (could still be an issue) and now it seems like i have a compression problem? Seems like im loosing air through my right spark plug, theres a distinct hiss when i try to start it, notice its...
  12. Engine Discussion
    I just can't catch a break! Here I am yet again fellas, fixed my no spark problem...fixed my tank...now theres a problem with the battery area on my cm400a (at least that's what it sounds like) here's a vid from YouTube. Happens when I push start, wasn't getting a response kickstarting. Notice...
  13. Miscellaneous Discussion
    I have a question...what did the original mirrors look like on a 1979 CM400A? The mirrors on there now are tiny round and vibrate out of usefulness before the bike is out of the driveway. I've seen 3, 4 and 5 inch-round, oval and rectangles with straight and bent mounts... all claiming to be...
  14. Engine Discussion
    Ironically enough two weeks after inspection bike has problems haha. The video pretty much says it. Regardless of kickstart or battery start it refuses to turn over. Try your best not to get jealous by my dog-chewed work sneakers :D It's been running fine all month, last ride was 3 days...
  15. Tires, Wheels, and Brakes
    I started researching tires for the 79 CM400A and I am having troubles. Some folks are calling for tube tires, some tubeless (it's got tubeless on the Comstars now), I can't seem to find a matched set, a lot of the recommendations I have found are obsolete and no longer made or the links are...
  16. Tires, Wheels, and Brakes
    Putting together the punch list of jobs to do on my new 1979 CM400A, and I noticed a chunk missing from the rear tire when I got back from a quick ride around the block. Since I'm listing jobs anyway, I take a closer look at the tires (that I was assured are fine - bet you didn't see that...
  17. Engine Discussion
    I recently got a 1979 Honda CM400A, mostly for my wife to learn to ride on, but also because I love the look and the Hondamatics always seemed cool.... Anyway...the previous owner had a meticulous garage full of all sorts of vehicles and was doing maintenance on several when I arrived for...
  18. Engine Discussion
    OK so- I would like to know some tips any of you have to keep a bike in better shape without taking anything apart. For example user "frogman79" advised in a previous post to clear out the carbs before parking by just turning off the fuel a block away from home, something I had never...
  19. Member Introductions
    Name's Danny.20. Student. Pittsburgh. I grew up in the city but always loved bikes, knew nothing about them, no one in my family rides so it wasn't an inheritance thing. I just always thought they were the coolest things in the world. I also always loved to drive things, I was the opposite of...
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