Jetting, drill sizes

3 replies to this topic
  • WR450F_RDR

Posted February 27, 2003 - 01:26 PM


Anyone out there have a compiled list of numbered drill sizes versus jet sizes, I am looking to increase my pilot air jet and can't wait for the sizes I want to try to come in on order, local shop has none in stock.:) I have a PAJ 70 now and would like to increase it upwards to 100+.

  • LarryCO

Posted February 27, 2003 - 03:52 PM


You can purchase an "adjustable" pilot air screw (known as the PAS) from Sudco International (look up their 800 number to order...about $15) and get it in about 2 days or so. This will give you a pilot air jet range of 40 through 125 based on the number of turns out the screw is from fully seated. Might consider this method (and waiting a few days) vs. eliminating your flexibility in changing pilot air jet sizes down the road. They might even be able to overnight it if you want to do that...Just my $0.02.


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  • Taffy

Posted February 28, 2003 - 12:42 PM


agree about the PAS-good idea.

DON'T GO TO 100 pa



  • WR450F_RDR

Posted February 28, 2003 - 03:02 PM


Always enjoy reading your posts on jetting Taffy, very informative. As well as Larry's clarification he did on one of them. Thanks for the input, I will spend my money on the adjustable and forget the drill.


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