Fused Piston Ring

This topic has 8 replies, 6 voices, and was last updated 12 years, 4 months ago by Peter Toth.

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- April 21, 2014 at 9:49 pm #26049
  
  Matt Dixon
  Participant
  
  Agreed. We run our Stockmoto at 32:1.
  
  110 is best, no less then 98.
- April 22, 2014 at 6:38 am #26065
  
  Richard Kirlin
  Participant
  
  That cylinder is still good, just send it out to langcourt and they would be able to fix it.
  http://www.langcourt.com/page15.html
- April 22, 2014 at 8:06 am #26084
  
  Matt Dixon
  Participant
  
  We race Redline oil in 1 series at 32:1 all the time, you need to focus on your jetting.
  
  Muratic acid should clean that barrel up nicely…
- April 23, 2014 at 6:39 pm #26198
  
  jack lachut
  Participant
  
  peter, I’m assuming you are using kart for recreational purposes. I run maxima 927 castor based oil on my kart at 24:1 ratio. that’s 6oz of oil per gallon of fuel. I use vp ms98 min or Sunoco 110 and never had a problem with wear on piston or cylinder. don’t know what carb your using or your main, pilot jet settings are? my cylinder is a 99.
- April 24, 2014 at 4:08 am #26206
  
  Harrison Potsworth
  Participant
  
  What year cylinder?
  
  Hone it first and see how well it cleans up, hard to tell too much from the picture while viewed from my phone :/. Looks like the poWer valve plugs aren’t blended tho.
  
  c12 fuel wit 4oz motul/gal
  - April 30, 2014 at 6:32 pm #26624
    
    Peter Toth
    Participant
    
    Just to update
    Got a new top end and piston kit from Wiseco. Had to do some more digging to figure out what size piston I needed. For anyone whose searching, 98-99 had a 54.0mm piston. I put the new pin bearing, piston pin, cir-clips, piston and piston ring in, swapped out the major gaskets and bolted it back up after I rubbed the cylinder down with muratic acid. changed out the fuel to proper 32:1 redline. ran it for 20 mins at idle, then under easy load. Only then did I take it out to terrorize the neighborhood…..i mean….high rpm power test. It did pretty well.
    
    for those that asked; I am running a keihin carb, dont know the jetting unfortunately. its a full 98 motor.
    thanks for the help and advice.
- April 21, 2014 at 9:36 pm #26048
  
  Dave Holstein
  Participant
  
  50:1 is way to lean on oil.
  
  Stay away from pump gas, too inconsistent.
  
  The class I race in runs 20:1 redline in 110 race fuel and I have never had any problems.
- April 22, 2014 at 3:25 am #26054
  
  Peter Toth
  Participant
  
  When I first got it, I ran some cheapo oil at 32:1 and it spattered all over the place. After doing some reading up on premix oils, I have since stocked up on redline. Although, the other articles I was reading were telling me to run it at the same 50:1 ratio, due to it being synth.
  
  Also, what do you think of the cylinder? is it still useable?
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