Motorcycle Top End Rebuild for Four-Stroke (Part 2 of 2)

http://www.rockymountainatv.com Piston &#1072n&#1281 Ring Substitution &#959n th&#1077 KTM RFS motor. Rebuild th&#1077 top &#1077n&#1281 &#959n &#1091&#959&#965r 4 stroke atv &#959r dirt bike. Piston change.
Video Rating: 4 / 5

25 Comments

  1. 0
    Posted 03/01/2015 at 7:37 | Permalink

    I have a YZ426. it will not start I have loosen eight times the
    carborator.i cleaned after I got that head loosened to sterile the valves and
    to adjust. I place everything back and subdue can not start please help

  2. 0
    Posted 03/01/2015 at 8:24 | Permalink

    thanks for uploading this

  3. 0
    Posted 03/01/2015 at 8:26 | Permalink

    That is the first time I have ever seen someone break the timing chain to
    do a rebuild. I have never done that, and I found it fascinating. I haven’t
    watched the first part of your rebuild video, so I will to see why you
    broke the chain.
    A excellent video, and will certainly be helpful to those who are new to this
    type of work.
    Rebuilding the top end is pretty simple, and I have done a few over the
    years.

  4. 0
    Posted 03/01/2015 at 9:01 | Permalink

    Which chain tool are you using to rivet the cam chain? Thanks for the
    video!

  5. 0
    Posted 03/01/2015 at 9:53 | Permalink

    Dude that 4 stroke engine amazes me, the way they built it and designed it.
    I never seen one on a 4 stroke like it previous to

  6. 0
    Posted 03/01/2015 at 10:15 | Permalink

    HALF PRICE PISTON

  7. 0
    Posted 03/01/2015 at 10:20 | Permalink

  8. 0
    Posted 03/01/2015 at 10:55 | Permalink

    is it doable for me to just buy the piston rings?

  9. 0
    Posted 03/01/2015 at 11:14 | Permalink

    ok it was simpler than i expected

  10. 0
    Posted 03/01/2015 at 11:58 | Permalink

    Hello,
    I must say thanks for this useful video!
    How much oil do I have to order to my bike? I have a exc 125 2004. I know
    that the air chamber is 120 mm. Do I need 3 or 4 pieces of 500ml bottle?

  11. 0
    Posted 03/01/2015 at 12:42 | Permalink

    hi, i opened up my top end and forgot to place it in TDC so when i took the
    piston out the crank turn a couple of times so now i dont what i should do?
    help this lost lad please!!

  12. 0
    Posted 03/01/2015 at 13:00 | Permalink

    If you have a 400 sxc 2000 and try to follow this video you will most
    likely fail. The main problem is the original oil ring, perfectly different
    design. IT IS EXTREMELY SENSITIVE! Very simple to snap.

  13. 0
    Posted 03/01/2015 at 13:37 | Permalink

    MOTORCYCLE RE BUILT

  14. 0
    Posted 03/01/2015 at 13:40 | Permalink

    im 13 years ancient and i want to tackul me crf 250r this winteE is it really
    that many parts that need to come off cuz i never done it befor? plez answer

  15. 0
    Posted 03/01/2015 at 14:33 | Permalink

    - we lubed the cylinder wall with motor oil.

  16. 0
    Posted 03/01/2015 at 15:12 | Permalink

    hey i have the same bike and did a top end rebuild and place everything
    together like in the video and it starts and runs really excellent but theres a
    ticking noise in the top end. any thought what it might be?

  17. 0
    Posted 03/01/2015 at 15:51 | Permalink

    @wq1299 i just did mine it started to loose compression on it’s fourth year

  18. 0
    Posted 03/01/2015 at 16:29 | Permalink

    I’m not sure on this bike. You shouldn’t have to and it should just about
    be like any other bike. Take out cylinder head and then slide the cylinder/s
    up off and you’re at the pistons… I would suggest investing in a benefit
    manual to complete this job.

  19. 0
    Posted 03/01/2015 at 16:32 | Permalink

    Hello friends from Rocky Mountain ATV MC, I’m from Brazil, São Paulo and
    also dirt bike mechanic’m here, I have a youtube preside over (vba bikes), like
    many of his videos and try to be organized the same as you guys, thank you
    for the videos and hug here from Brazil.

  20. 0
    Posted 03/01/2015 at 17:13 | Permalink

    @SoobaaSteve – You need to call a shop in your are to find out. But why not
    do it yourself?

  21. 0
    Posted 03/01/2015 at 18:04 | Permalink

    ktms are a beeech

  22. 0
    Posted 03/01/2015 at 18:45 | Permalink

    what caused the hurt? Did u overbore the hurt cylinder?

  23. 0
    Posted 03/01/2015 at 19:05 | Permalink

    Ha Ha Thanks! 2 Strokes are certainly a small simpler to work on but 4
    strokes aren’t terrible as long as you’ve got the assess tools and you get all
    the steps in the assess order.

  24. 0
    Posted 03/01/2015 at 19:26 | Permalink

    your CRF is much simpler than this KTM. I really filmed a video on one,
    but never have had time to edit it.

  25. 0
    Posted 03/01/2015 at 19:45 | Permalink

    You forgot to bleed off the air out of the head.