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  1. CB450 Cylinder Jugs Needed

    Wanted Parts and Bikes
    Hi all! This is my first post here in the Hondatwins community, so bear with me... I am looking for a new set of cylinder jugs for my 1972 CB450 rebuild. I took them to a local vintage motorcycle rebuild business here in Ferndale, Michigan. There was some cylinder wall damage on the left...
  2. CB360 piston swap from Yamaha XT225 or other?

    Engine Discussion
    I am looking for a set of pistons to go in my CB360, which is in need of being bored out. Any ideas on how well these pistons for a Yamaha xt225 might work in the cb360? They have a bore size of 70mm and the wrist pins have a diameter of 16mm. However, they are shorter in height. In theory...
  3. Top End Questions: Seeking Advice on Next Steps

    Engine Discussion
    I'm a new member and have started a few cb projects. Currently, I have (2) cb350, and (1) cb100 engine torn down. One of the 350's is a K0, the other is a K4. I'm at the point of all of these where I need to make a decision what needs to take place with the pistons, rings, and cylinder walls...
  4. '78 CB400t Cylinder Bore

    Engine Discussion
    Hey everyone! I'm taking the cylinders, head, and pistons/rings from my '78 CB400t to a machine shop to get them checked out before I rebuild the engine. I have the Clymer manual, but I want to make 100% sure that the specs listed in it are accurate. We all know how Cylmers can be...:rolleyes...
  5. To bore or not to bore?

    Engine Discussion
    Continuing on with my CB 350 project. Engine teardown is in progress. The top end is more or less in pieces and its time to decide what to do with the jugs. I had the great fortune to have the cylinders measured up by our very helpful QC guy and his faro arm after work today. Both are right on...