Adventure Motorcycle Magazine Subscribe Now

Results 1 to 7 of 7
  1. #1 150CC BORE KIT, SINNIS APACHE 125CC, NEED HELP ?!?! 
    C-Moto Noob
    Join Date
    Sep 2014
    Location
    UK
    Posts
    4
    Hello everyone,

    This is my first thread here so bear with me on this.

    I have purchased the gn150cc bore kit for my beloved sinnis apache 125cc. However I can see myself running into a few problems so I would like someone to answer these questions. I will be very grateful for your answers!

    1.) I have 5 piston rings, I know the two thinner ones go on the bottom ring together with the z-shapped ring, and the 2 other thick rings go on top, but which way up do these rings go and what order on the piston do they go on (one of the thick piston rings has a silever egde and the other one is totally black) ? I have read that rings are suppose to have numbers on them to show you which side faces up but there isnt any markings on the rings :(

    2.) The gaskets for the cyclinder seem to be twice as thick as the 125cc gaskets, will this cause me to loose compression or will they help by avoiding the valve from hitting the piston?

    3.) Do I need to use gasket sealant on the gaskets? I would like to use it so I know its airtight in there but will this make the gaskets too thick and cause compression loss?

    4.) What are the recomended piston ring gaps? I have measured 0.018 for the thick rings and 0.02 for the thin rings.

    Thanks for taking the time to read this, pictures of everything are below. I will be doing the usual

    Also, if you want to watch my video of me un-packing this than the link is below, il be making more videos of me isntalling this step by step, dont forget to subscribe ;D

    https://www.youtube.com/watch?v=ePMV7ia6gtE

    boire kit together 2.jpg
    Reply With Quote  
     

  2. #2 Re: 150CC BORE KIT, SINNIS APACHE 125CC, NEED HELP ?!?! 
    Senior C-Moto Guru humanbeing's Avatar
    Join Date
    Dec 2008
    Posts
    1,509
    http://translate.google.com/translat...htm&edit-text=
    http://www.dansmc.com/rings.htm
    ---
    Good quality made in China rings :
    Dongya Top : DY 2nd : D http://item.taobao.com/item.htm?id=40158406458 |
    ATG Top: ATG 2nd: A http://www.motorfans.com.cn/bbs/view...p?tid=17647459
    Riken Top: RN 2nd: R http://translate.google.com/translat...htm&edit-text=
    I won't trust unknown chinese rings other than the ABOVEs…
    Last edited by humanbeing; 12-04-2014 at 09:57 AM.
    Reply With Quote  
     

  3. #3 Re: 150CC BORE KIT, SINNIS APACHE 125CC, NEED HELP ?!?! 
    C-Moto Noob
    Join Date
    Sep 2014
    Location
    UK
    Posts
    4
    Thanks for the reply, but that only answers my first question
    Reply With Quote  
     

  4. #4 Re: 150CC BORE KIT, SINNIS APACHE 125CC, NEED HELP ?!?! 
    Senior C-Moto Guru humanbeing's Avatar
    Join Date
    Dec 2008
    Posts
    1,509
    Pre "kit" days = http://www.motorfans.com.cn/bbs/view...authorid=75082
    Ref to Suzi shop manual as possible.

    4.
    Info of Kymco 150 http://blog.xuite.net/tsai.kevin36/scooter/27916748
    Info of 00's RV125 (Van Van)
    mge3.jpg
    Last edited by humanbeing; 12-04-2014 at 03:03 PM.
    Reply With Quote  
     

  5. #5 Re: 150CC BORE KIT, SINNIS APACHE 125CC, NEED HELP ?!?! 
    C-Moto Guru
    Join Date
    Jan 2012
    Location
    Norwich
    Posts
    408
    There should be a beveled edge on the piston rings, this faces up.

    The loss of compression should be negligible. You could use a bit more torque on the cylinder head nuts to compensate a bit, the touque should be 20nm so use 25.

    Use sealant on the base gasket to prevent leaks, leave the head gasket alone.

    Look for a piston ring gap guide with a chart.
    Sinnis Max II (QM125-2V), K157FMI engine (technically a K162FMJ now), 115 main jet, 40 pilot jet, cone air filter, 150cc big bore kit, 17 tooth front sprocket, 30mm carburettor, alarm with remote start, HID spotlights, performance CDI.
    Reply With Quote  
     

  6. #6 Re: 150CC BORE KIT, SINNIS APACHE 125CC, NEED HELP ?!?! 
    C-Moto Noob
    Join Date
    Sep 2014
    Location
    UK
    Posts
    4
    All the rings are rectangular and have no markings, should I still use them?
    Reply With Quote  
     

  7. #7 Re: 150CC BORE KIT, SINNIS APACHE 125CC, NEED HELP ?!?! 
    Senior C-Moto Guru humanbeing's Avatar
    Join Date
    Dec 2008
    Posts
    1,509
    Measure & find a marked one if u afraid the quality.
    ---
    Commonest "62" is 1.2/1.2/2.5 BUT there's exception
    http://www.dongya.cn/prodlist.asp?page=7&tp=4&keywords=
    ---
    Std ¥6.80 http://www.dongya.cn/en/intro.asp?aic=9]
    CID ¥13.00 http://item.taobao.com/item.htm?id=40158406458
    the PVD is difficult to get in retail form. http://item.taobao.com/item.htm?id=35494726804
    Last edited by humanbeing; 12-15-2014 at 07:15 AM.
    Reply With Quote  
     

Similar Threads

  1. sinnis apache 125cc help
    By supersmooth315 in forum Modifications (Cosmetic and Performance)
    Replies: 1
    Last Post: 08-12-2015, 01:29 AM
  2. pulse adrenaline 150cc big bore kit fitted
    By offtheclockuk in forum Modifications (Cosmetic and Performance)
    Replies: 68
    Last Post: 03-15-2015, 08:39 PM
  3. 150cc big bore problems
    By badger8v in forum Modifications (Cosmetic and Performance)
    Replies: 3
    Last Post: 07-07-2014, 07:28 PM
  4. My RMR 125 project 150cc big bore kit
    By Biker1234 in forum Modifications (Cosmetic and Performance)
    Replies: 3
    Last Post: 08-13-2013, 06:51 AM
  5. Replies: 18
    Last Post: 11-21-2011, 04:49 PM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •