R/C Tech Forums - View Single Post - Does this look like rust in my nitro engine?
Old 03-28-2012 | 04:23 PM
  #6  
got_nitro
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It's the cut of steel manufacturers use, looks like a used normal engine to me. If it bothers you pull the crank out and hit it with a steel wire wheel on a dremel, then hit it with a polish wheel and some mothers.
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