Boring a cylinder

25 Comments

  1. 0
    Posted 03/04/2015 at 7:36 | Permalink

    what does the term “bore” really mean?
    sorry if it’s really obvious for you!

  2. 0
    Posted 03/04/2015 at 8:33 | Permalink

    How do you know the piston size after that. I’m new to this stuff.

  3. 0
    Posted 03/04/2015 at 9:26 | Permalink

    I just hand work the edges with a small diamond file

  4. 0
    Posted 03/04/2015 at 9:44 | Permalink

    yes Get your piston previous to you bore. Then Bore it to fit the pistone on a 2
    stroke engine Usually (in General) about .002 inch per side is about a new
    clearance for most amd for a 4 Stroke it is usually about half the amount
    they run a much closer tolerance than 2 strokes.

  5. 0
    Posted 03/04/2015 at 10:41 | Permalink

    Do you need larger pistons after dull the cylinders out?

  6. 0
    Posted 03/04/2015 at 10:42 | Permalink

    I was only asking..

  7. 0
    Posted 03/04/2015 at 11:00 | Permalink

    what do you use to peter out the port edges?

  8. 0
    Posted 03/04/2015 at 11:13 | Permalink

    Thanks it came off a yamama dt 100

  9. 0
    Posted 03/04/2015 at 11:32 | Permalink

    It came off a yamaha dt 100

  10. 0
    Posted 03/04/2015 at 12:18 | Permalink

    you can get one from MSC or Enco or most any Industrial sales shop its a
    carbid tiped dull bar.

  11. 0
    Posted 03/04/2015 at 12:22 | Permalink

    can you please make vid how u center xyz in ref to scale and those.000x
    #’s? ive got low base 3in1 smithy, not an champ yet an underdog but im
    confused by initial settings

  12. 0
    Posted 03/04/2015 at 13:03 | Permalink

    incorrect it had a very nice end when done and a .001 left to hone out

  13. 0
    Posted 03/04/2015 at 13:15 | Permalink

    If you bore a cylinder you cant use the ancient pistons.you have to get new
    ones that fit the bore size.

  14. 0
    Posted 03/04/2015 at 14:15 | Permalink

    Yes .!!

  15. 0
    Posted 03/04/2015 at 15:14 | Permalink

    Always use a proper reboreing machine. Its quicker, and more acurate.

  16. 0
    Posted 03/04/2015 at 15:17 | Permalink

    scarry but fascinating, dont know if i would try that on my yz

  17. 0
    Posted 03/04/2015 at 15:20 | Permalink

    same here, ok just wondering.

  18. 0
    Posted 03/04/2015 at 15:34 | Permalink

    i do it the best doable way a milling machine in the proper way to do
    this type of job!!!

  19. 0
    Posted 03/04/2015 at 15:36 | Permalink

    Nice job, getting it done with the tools available. Looks like a Honda MT
    or MB cilinder?

  20. 0
    Posted 03/04/2015 at 15:39 | Permalink

    I am the man most all Engineers come to when they just don,t have a clue. I
    am a Tool Maker aha…

  21. 0
    Posted 03/04/2015 at 16:35 | Permalink

    Just use some emeory cloth or fine high quality sand paper Or some time
    hand work it with a die grinder with a marble Takes prastice but not to
    trying.

  22. 0
    Posted 03/04/2015 at 17:05 | Permalink

    no, i am much more i am a tool maker of 35 years, i am the man the
    engineers come to when they don’t have a freaking clue .. aha that right

  23. 0
    Posted 03/04/2015 at 17:39 | Permalink

    NO it worked just fine thank you

  24. 0
    Posted 03/04/2015 at 18:24 | Permalink

    what dirt bike that did that jug come out of, it seems very small, looks
    like a yamaha jug.

  25. 0
    Posted 03/04/2015 at 18:42 | Permalink

    Is it doable to bore one out without putting a release scratch on it or
    any hurt to the fins ?