JD Needle Diameters

2 replies to this topic
  • lipskid

Posted August 22, 2003 - 08:14 PM


Can anyone tell me how JD's needle diameters compare to the stock OBDUT. Is the red diameter smaller or larger. Blue?


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  • Indy_WR450

Posted August 23, 2003 - 04:13 AM


JD Red is 0.1078" diameter, and the JD Blue is 0.01068" diameter. Stock needle is 0.1090" diameter. The end tapered tips of all three are about the same diameter 0.0880" to 0.0870" range. Needles are all the same length. :)

  • lipskid

Posted August 23, 2003 - 04:29 PM


Thanks Indy! I've been too much tinkering at once(pipe, powernow,JD kit, airbox chop) and kinda got lost. Good to know that even the red needle is a bit richer than stock,at least on the bottom.

Thanks again.


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