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os rg .21 what pipe

os rg .21 what pipe

Old 12-18-2008, 02:25 PM
  #16  
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running a cold plug for me is my engines last a long time and are easer to tune. with hot plugs the engines run hotter around 260-280 with it not running lean.
bought a ninja before we started racing this year and i'm running a cold plug in it and it has 4 gallons on it and it still tight. my $.25 worth.

Last edited by mungen; 12-19-2008 at 07:29 AM.
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Old 12-18-2008, 02:29 PM
  #17  
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I like A5's (med-cold, like an MC-8) and either 086 or Jp2 pipe. I didn't like the #8 as much with 30%, wasn't crisp on top.
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Old 12-18-2008, 04:22 PM
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is there a power diff's from a hot plug to a cold plug
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Old 12-18-2008, 04:33 PM
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not really
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Old 12-19-2008, 07:05 AM
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Plug temp and shimming are how you change the timing on your engine. Not so much about more or less power but where the power's delivered. Both the A3 and A5 will work in that engine, the stock shimming is fine for 30%. Try both and see which works best for you.
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Old 12-20-2008, 03:48 PM
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how many shims for 20% nitro
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Old 12-20-2008, 04:48 PM
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i'd use one shim for 20% fuel and 2 for 30%. never had a problem with it.
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Old 12-20-2008, 04:53 PM
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what would happen if ya used 2 for 20%
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Old 12-20-2008, 05:02 PM
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2 shims has less compression than one shim.
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Old 12-20-2008, 08:24 PM
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i just got a used rg. i would like to know the base needle settings for this engine, thank you.
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