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1983 gs750es carb jetting

  • Thread starter Thread starter xedgex21
  • Start date Start date
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xedgex21

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The bike has the stock carbs and jets on now, with the stock 4 into 2 exhaust. I have the kerker 4 into 1 performance exhaust, but no clue on what size jets to go with. If anyone can even lead me in the right direction it would be a great help thanks.
 
I think your stock main jet is 115. I'd go with some 125s and go up one on the pilot jet. If you decide not to go up on the pilot you'll have to adjust the idle mixture screw.
I'd also shim the needle.
 
The stock jet is117.5.From the shop manual courtesy of BassCliff;)
 
thanks I just got that manual its got all the specs about the carbs and jets, it's a big help. The overall plan is the exhaust, k&n filters, and whatever jets I figure out to buy.
 
Don't screw around trying to experiment with bigger mains, shimming needles, and so on. Buy a Dynojet kit and get it over with. The kit will put you in the ballpark right off the bat. The jet needles are what makes the kits worth the money. You can get the mains where they need to be but the rest of the rpm range will be screwed up because the taper of the stock needles won't allow you to get the carbs tuned right.
 
Billy Ricks said:
Don't screw around trying to experiment with bigger mains, shimming needles, and so on. Buy a Dynojet kit and get it over with. The kit will put you in the ballpark right off the bat. The jet needles are what makes the kits worth the money. You can get the mains where they need to be but the rest of the rpm range will be screwed up because the taper of the stock needles won't allow you to get the carbs tuned right.
Click to expand...
He's right

xedgex21 said:
A kit like this?
http://www.oldbikebarn.com/Dynojet-Intake-Stage-3-Performance-Kit-3315?sc=12&category=73817
Click to expand...
With just a pipe I'd try a stage one kit. If they don't make one the kit is worth it just for the needle.
 
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