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GS850 Carb Jet

  • Thread starter Thread starter yoshisakan
  • Start date Start date
Y

yoshisakan

Guest
Hey all, I need to jet a set of 850 carbs. Last time I jetted 1100 carbs, I went with the dynojet kit, but then found out that it didn't include the much needed pilot jets. Does anyone have a good baseline I should use if I were going to make an "a la carte" a kit? The bike has a stock exhaust and POD filters, but may have a high flow exhaust in the near future. I could get away with just installing new Mains and pilot jets, the adjustable needles aren't a necessity, right? Please advise.

Thanks
 
"... could get away with just installing new Mains and pilot jets, the adjustable needles aren't a necessity, right? "

Everything that I read here,says you'll need the dynojet needle- unfortunately no a la carte ordering! must buy kit
 
Jetting suggestions for your 850 will depend on what year it is.
icon_shrug.gif


The '79 850 had VM carbs, later ones had BS carbs.

Regardless, basic rule of thumb would be 4-6 sizes (on the mains) for the pods, another 3-5 sizes for a pipe. Pilot jets usually don't need to be bumped.

.
 
It's an '82. I believe they're mikuni bs carbs. I had to bump the pilot jets on my 1100, maybe there's a significant difference between the two. If the needles are a necessity, I'll just buy the kit.
 
If you are using the stock exhaust and K&N or APE pods, depending on the altitudes that you ride in:
4,000' and up: 117.5 main jets and adjust fuel/air screws.
Below 4,000': 122.5 main jets and adjust fuel/air screws
Stock pilot jets/air jets/jet needles/needle jets for either situation. BTDT
 
Oh, so they will perform just fine by only upping the mains?
 
I recently had my '82 1100e (APE pods, V&H) professionally jetted on a dyno, and was told that it needed more parts than were included in the dynojet stage 3 kit.
 
Maybe a better question would be, whats the largest main jet I can run with a stock needle? Ape pods, stock exhaust, 1000ft elevation
 
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