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Jet Size 1980 GS 1100

  • Thread starter Thread starter JOE BIO
  • Start date Start date
J

JOE BIO

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Recently purchased a 1980 GS 1100. It is basically stock, I have purchased a used 4 into 1 Kerker Header and used individual K&N Pods .I have a Clymer Manual but it doesn't tell me the size of the stock jets? The ones that are currently installed are 107.5. Is that stock? I know the ultimate setup would be a 3 Stage Jet Kit, but I just want to get the best performance by increasing the Jet size for now. Thanks in advance for any help. Joe
 
107.5 is the stock size for the 1980 1100's. 112.5 for the 82 model.
 
Thanks for the information . Do you have any suggestions on how many sizes I should go up ? Joe
 
I would start with 130's and work from there.
You might have to mess with needle position as well, thats where the jet kits are good cause they have adjustable needle's with different taper than stock.
I Like "Factory Pro" kits.
 
Before I went with the Dynojet I ran for awhile 130 main jets, 47.5 pilot jets, 170 pilot air jets and shimmed the jet needle (raised) with four washers from Radio Shack (Four washers is equal to 2 notches on an adjustable needle) If I remember right the main was a little rich so I'd go with a 127.5. The needle was right on. This is with a Kerker 4-1 and K&N pods.
 
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