Question -- is this wirth rebuilding or should i scrap it and get entirly new engine kit

Discussion in 'Instructions for Building and Repairing Motorized ' started by DXT, Jul 11, 2018.

  1. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    20180711_021745085_iOS.jpg 20180711_021757731_iOS.jpg 20180711_021806756_iOS.jpg 20180711_021856283_iOS.jpg 20180711_021941920_iOS.jpg 20180711_021822431_iOS.jpg 20180711_022036053_iOS.jpg 20180711_022619718_iOS.jpg 20180711_030400221_iOS.jpg 20180711_021745085_iOS.jpg 20180711_021757731_iOS.jpg 20180711_021806756_iOS.jpg 20180711_021856283_iOS.jpg 20180711_021941920_iOS.jpg 20180711_021822431_iOS.jpg 20180711_022036053_iOS.jpg 20180711_022619718_iOS.jpg 20180711_030400221_iOS.jpg Just spent the last couple hours taking a used engine and bike aapart that I got for real cheap and now I know why, but the title says it all just trying to figure out if it would be more cost effective to get a new kit or rebuild this old one.
     
  2. Dan

    Dan Staff
    Staff Member

    Joined:
    May 25, 2008
    Messages:
    12,776
    Likes Received:
    92
  3. crassius

    crassius Well-Known Member

    Joined:
    Sep 30, 2012
    Messages:
    4,032
    Likes Received:
    150
    when a customer has to pay for both parts and labor, I advise he just buy a new motor for $80

    even if he can do his own work, some parts cost more separately than they do in a kit, so buying a whole kit to put some spares om the shelf might be better than buying just the motor

    these are the things to think about
     
    Dan likes this.
  4. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    does anybody have a cluse as to what size this engine is

    thanks Dan and crassius I was thinking of getting a new kit off ebay with upgraded sprocket, spring tensioner, upgraded carb and reed valve, and expansion exause camber, and some sort off vibration mount. Here are some npictures of the old bike in oragnge and the new bike in black.

    20180708_173804718_iOS.jpg 20180708_173816839_iOS.jpg 20180708_173909349_iOS.jpg 20180708_173913458_iOS.jpg 20180708_173921628_iOS.jpg
     
  5. Dan

    Dan Staff
    Staff Member

    Joined:
    May 25, 2008
    Messages:
    12,776
    Likes Received:
    92
    Dang DXT. That poor bike been threw it, eh?
     
  6. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    yea didn't see that damage when I was looking at buying it, but oh well live and learn.
     
  7. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    Update --- got all put together and on first test ride the chain broke not at the master link master link. But here are some picture while I wait on upgrade parts
    5A28FDBB-7BA5-4449-8F93-1AB0E98C71AD.jpeg 56E25716-E32D-4DCE-84F6-0977918265F5.jpeg BDE2C085-0973-4B48-BDAF-076D667EA37F.jpeg 336F9F3A-F97B-4BC7-89F5-D5CA2114B9FD.jpeg
     
  8. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    E0DBE749-48CA-4509-AED5-03B06CF51020.jpeg Just got new chain in and installed chain tensioner
     
  9. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    Look what I just received now time for some fun

    IMG_20180822_140223.jpg
     
  10. crassius

    crassius Well-Known Member

    Joined:
    Sep 30, 2012
    Messages:
    4,032
    Likes Received:
    150
    should be really good - I get those, used to be A80, but with sticker on side they call it superhawk now - sticker peels off OK with a bit of WD40
     
  11. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    Got her mounted in but couple of issues
    1) engine sits higher now sow now I need either an offset or a short intake --- I am thinking of getting a cnc short intake and continues using old carb.
    2) and now the bottom of my old exhaust presses hard to the frame making so that I'm not getting a full seal. --- thinking of getting a VooDoo muffler and installing it
    IMG_20180822_212438.jpg
     
    #11 DXT, Aug 22, 2018
    Last edited: Aug 23, 2018
  12. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
  13. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    I took her out for a first run had a strange problem it would run only if I had it greater that an ideal I’m thinking it’s not getting enough fuel plus I’m running 50:1 premix
     
  14. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    got it together but still got issues IMG_0366.JPG IMG_0367.JPG
     
  15. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    67130998-FD4E-4A6D-8C75-9D95587D677E.jpeg Update --- changed out exhaust but still no joy, anything below 10 mph it wants to stall. I hope the new carb gets here soon. I hope to have her running by fall.
     
    #15 DXT, Sep 5, 2018
    Last edited: Sep 5, 2018
  16. crassius

    crassius Well-Known Member

    Joined:
    Sep 30, 2012
    Messages:
    4,032
    Likes Received:
    150
    I'd run 32:1 - usually when idle screw is all the way in and no idle means it is way too rich and needle needs to get dropped down leaner
     
  17. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    E1209B32-421C-49BD-8C0E-713B396C8DCE.jpeg C494FDBA-5E94-44A7-8F70-6ECC9383F591.jpeg 5F0A4538-0C0A-4D9F-AAFC-235C09C057C8.jpeg New carb just arrived got her installed, can somebody direct me to a good tuning video
     
  18. Greg58

    Greg58 Well-Known Member

    Joined:
    May 1, 2011
    Messages:
    3,050
    Likes Received:
    130
    That's a CNS style carb with the fuel enrichment instead of a choke, most of the early models had a idle screw and idle air screw. The problem I had with that style carb was the plastic bushing in the intake was not compatible with gasoline, several of the first kits I bought the carb wouldn't stay on after a while. Hopefully that has been corrected. My son in law is still running a cns2 on his, we built that bike in 2011.
     
  19. DXT

    DXT New Member

    Joined:
    Jul 11, 2018
    Messages:
    23
    Likes Received:
    0
    Thank for the info Greg too some close usp I see the ideal screw but looks like ideal air had been plugged, what are the 2 hoses coming out the top? 2D7DD44E-4CB2-4A71-AFB3-F057F2E0C221.jpeg B973F205-BB2D-405E-921A-BAA3D1E604AB.jpeg
     
  20. crassius

    crassius Well-Known Member

    Joined:
    Sep 30, 2012
    Messages:
    4,032
    Likes Received:
    150
    jeez, is that a crack in your last pic??
     

Share This Page