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  1. Engine Discussion
    Here is a problem that has got me stumped. I have been riding, albeit not too often, this little Honda. I put it together from boxed parts and the help of a student. I rebuilt the carbs which are supposed to be good copies of the originals. Adjustments are on the same side so you need a long...
  2. Fuel Supply and Carburation
    tGood morning all! I recently rebuilt this cb350 engine and cleaned the carbs (replaced diaphragm). When in 1st and second gear it is noticeable that it will not continue to accelerate even over as much as 3000rpm and it just holds and flutters. My assumption is and air leak but I did have a...
  3. Fuel Supply and Carburation
    I have a 1978 Hawk TII with a VB-21B carburetor that I am trying to clean/rebuild because it was sitting for three years with fuel in the carburetor and it runs very poorly. I was able to remove and clean most of the jets and jet needles but am having trouble figuring out how to remove the slow...
  4. Fuel Supply and Carburation
    Hi everyone I hope this post landed the right place. My question is, where would I be able to find carburator main jets, for my CB 450 S. Are the main jets universal (I know that there is different jet sizes, that regulate the air/fuel mix, that's the point of main jets), so any honda CB 450...
  5. Fuel Supply and Carburation
    I purchased a 1976 CB200 a few weeks ago as my first bike. I knew it didn't run, but I was excited to pick up a new hobby of working on bike engines. I got my license ten days ago - and haven't gotten to ride yet! I've cleaned the carbs and replaced the jets and gaskets. At this point I think...
  6. Fuel Supply and Carburation
    My CB175 has had some problems for the past year or so. It gets stuck at high revs, have to downshift to get it to come down. I thought this might be a carburation problem. I went through Steve/Spring66's advice about CB175 carburetor adjustment. I thought I'd try this before doing a full carb...
  7. Fuel Supply and Carburation
    Has anyone had issues with their stock 71 cl350 choke turning on(lever up) while riding? I guess its not a huge deal, but it is irritating losing power every 3 minutes because the vibration just moves the lever up on its own and i have to bring it back down every time while i ride. Is there any...
  8. 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...
  9. Fuel Supply and Carburation
    I recently traded some art for a 1978 Honda Hawk CB400 (TI - I think). It has been sitting for years, and much of the bike was disassembled in a Tubberware container, along with water, thus much rust and corrosion. Upon looking into the carburetion, taking apart what I could manage through the...
  10. Engine Discussion
    Here we are again. Back story is I'm currently building my first CB450 Chopper and am moving along at a snails pace all of the sudden. I've done plenty of research but feel free to share any info/posts that I may have overlooked. Here's what I've done thus far and still can't get it to kick...
  11. Fuel Supply and Carburation
    Hey everyone, new here. I'm a college student in central MA and I grew up working on engines, but I just recently got into working on motorcycles..very cool machines. What I have on my hands is a 1971 cb450 k4. I bought it in decent shape and have been riding it strong for about 4...
  12. Fuel Supply and Carburation
    I've been getting my 72 cb450 back up to speed for this spring, after fixing the front brakes and a flat tire I thought it was ready, then I found that it won't go over 60 mph. Once I hit that range it loses power and can't climb any higher. I figured I just had to adjust the float levels now...
  13. Engine Discussion
    OK, so I am sure this is supposed to be the easy part of reassembly based on how little coverage either of my shop manuals give to this issue, but .... can anyone send me a photo or two and describe where the 2 throttle cables connect to the carb and how the choke connects? It has been too long...
  14. Fuel Supply and Carburation
    Today I removed and disassembled the carburetors on my new (to me) 1975 CL360. Turns out that both of my carb diaphragms have significant tears in them and will need to be replaced. As far as I can tell there are two sources to for buying replacement diaphragms: JBM: Keihin CV carburetor...
  15. Parts For Sale
    Carb kits available for Honda twins, and some assorted used parts. visit my website loudfastugly . I also offer technical support. I'm a one man operation, servicing vintage bikes for 20 years.
  16. Fuel Supply and Carburation
    Hello. Im trying to figure out if a Honda cb360 Carb boot(engine side)will fit a Honda cm400c. I took out my air box and when I did the carb fell and the old boots were brittle and cracked off. so now im looking for replacements. :confused::confused: Thanks
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