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  1. Long time lurker, finally joined

    Member Introductions
    Hello all, As the title says, i've followed a lot of tech advice and general discussions on this site for a while and decided it was time to finally do this properly and join. This year i purchased my 2nd (and 3rd) bike and it's been a challange but a fun one. I live in upstate NY so the riding...
  2. 1981 CM400E Cafe Racer - 7700KM original engine

    Bikes For Sale
    From barn find to beauty. This was and is a beautiful example of a 81 CM400E. Seller is only the 3rd owner and the oprevious owner left this bike to die after putting ONLY 7,700km (4,800mi) on it. Bike went through a frame-off restoration, fully repainted, top-end redone, and no detail missed...
  3. Hi all

    Member Introductions
    Just bought a Honda CM400T. Great looking bike. Having trouble getting a UK registration for it from DVLA at the moment, but hope to be out and about soon. Seems smooth. Just sold a Superdream I was very happy with, can't believe the superior build of the 400. Anyone else find the rear...
  4. Can you put an 82 cb650 engine onto an 81 cb900?

    Other Bikes
    I found a cb900 for a good deal but 3rd cylinder is seized. Could a drop a 650 into it with little trouble?
  5. 1981 CM400T - sporadically no spark

    Electrical Discussion
    Hello, First of all sorry in advance for my bad English I'm from Germany and not really into posting on forums :) I have signed up to this forum because I have a weird issue with my Dads '81 CM400T which is really annoying and I don't know how to solve it. After pretty much standing still for...
  6. Cm400t carb replacement

    Fuel Supply and Carburation
    I didn't do a keyword search but figured you guys might be able to help me on the best aftermarket or simply replacement carbs purchasable. What's a good site or seller that would ship to me? I have about 250-300$ to work with and am looking to install it asap. TIA
  7. New to forum and new to bikes

    Member Introductions
    Haha well I decided to drive 2 hours to Austin Texas to pick up a bare bones 79 Honda cm400 frame is chopped, doesn’t run, no instrument cluster, leaking forks, no battery the guy converted it into a capacitor. That’s just scratching the surface. I’ve never worked on a bike before but if anyone...
  8. Please help carb adjustments. Runs rich

    Fuel Supply and Carburation
    So my buddy bought a 81 cm400 custom for cheap, didn’t run. We figured it was carb. So we cleaned the carb and did a rebuild. Starts up fine but revs kinda crappy. First time for both of us rebuilding a carb. When you ride the bike it seems to not have much get up and go with any sort of load on...
  9. New to the site

    Member Introductions
    Hello. I am new to the site, but I have already found it helpful. Thanks. I am on my 2nd project bike, 1981 CM400c. It was in fairly good shape and running well, but not maintained or cleaned very well. I am doing a lot of work and painting. Hopefully, I will get it running even better than...
  10. 81 cb400 vin # help

    Miscellaneous Discussion
    So I just recently purchased a 1981 CB400. The bike did not have a title when I got it, and being new to honda street bike I took the sellers word. I called my local dmv to make sure it was not reported stolen and it checked out ok. That being said I am having conflicting vin results. My dmv and...
  11. CM400T brake line

    Tires, Wheels, and Brakes
    So, super new to moto wrenching (I've been a bicycle mechanic for years, so I am mechanically inclined, but moto is a whole new bag of worms). Looking to better understand what to look for in buying a stainless braided front brake line. I have no idea what's compatible with what years/models...
  12. Cam chain tensioner bolt too short to fasten lock nut

    Engine Discussion
    Hi Everyone, I have a nice little CM400 that I recently tuned up, adjusted valves, changed gasket and adjusted cam chain tension. I may have made a mistake at some point because it seems that the tensioner bolt went back inside the engine too much and now it is too short to put the nut onto...
  13. 1981 CM400E summer project help

    Member Introductions
    Hello all, its cyr. Super super grateful to have found this form, very eager to tap into the knowledge of anyone who has any to spare. First post on this form so here is my go at following the list.:p 1.) Location: West Texas. 2.) Year, Make, Model: 1981 (Honda) CM400E with 11,198 miles Lets...
  14. Complete Noobie to Motorcycles! 1981 Honda cm400t with more than electrical issues!

    Member Introductions
    Hello everyone, I’m from Vancouver, BC Canada. Pleasure to meet you all! I just bought a 1981 Honda cm400t, it was a project bike for the past two previous owners. Which means that it has got some work that needs to be done on it. I found hondatwins while I was searching for resources to learn...
  15. CM400A, CM450A air intake books (carburetor to airbox)

    Fuel Supply and Carburation
    Anyone find a set of compatible aftermarket air intake boots (rubber tube between carburetor and airbox) that fits either a CM400A and/or CM450A with stock carbs and airbox? Honda sold 'em with the airbox on these bikes, which means no separate part number for me to search. Apologies if this...
  16. CM 400t related questions (Mainly engine)

    Engine Discussion
    Hello everyone! I am new to the forums, and motorcycles in general. I gained my licence a few months back and bought a CM400T.At the time it was riding fine after I bought a new battery and changed all the oil out, besides a loud ticking noice, what I assumed were the valves. However, my father...
  17. My cm 400 re-jetted and re-assembled!

    Pictures and Videos
  18. CM400T; Still Not Riding it

    Fuel Supply and Carburation
    Seems like i may never. Thought id have some fun building a custom in my spare time. Pick up on that runs, mod it, tweak it... have a little fun like when I was a kid. But, it's turned into a he'll storm with my limited time to work on it. I've posted some carb issues previously and since...
  19. First time engine work - help, I'm scared. (cm400t)

    Engine Discussion
    I'm doing my very first bike tear-down and build on a bike that a buddy of mine practically gave me. So, I decided that I want to try to do as much as I possibly can on this bike by myself over the next few years in order to teach myself and have fun. Engines have always intimidated me, but I...
  20. Need a seat!! CM400 also i have spare parts

    Wanted Parts and Bikes
    Hey all, Looking for a seat in good condition for my 1981 CM400 Custom. I have a parts bike torn apart also that i can trade parts off of if your more into that sort of thing ;) Looking for something relatively close to Colorado as shipping cost a fortune these days! If what your looking for...