Header Pipe

3 replies to this topic
  • HaremScarem

Posted August 10, 2002 - 02:57 PM


This may be a stupid question, but I'm in the middle of jetting the bike. The header pipe has turned blue for about 4" from the Jug. Does this reflect the mixture burn or is it normal.


  • Fryboy

Posted August 10, 2002 - 03:07 PM


It is normal for the header pipe to turn bluish from the heat.

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  • Scuba_Steve

Posted August 14, 2002 - 06:56 PM


Sorry Harem, but if it's real blue it indicates high heat, meaning that your mixture is too lean. Try fattening the mixture (larger main jet, move the needle if necesary)

  • Hick

Posted August 15, 2002 - 07:49 AM


I wouldn't base my jetting on the color of my header.


Or silencer. Or spark plug either, for that matter (too unreliable on a bike w/ an accelerator pump).


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