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Jetting Questions

  • Thread starter Thread starter garrett0091
  • Start date Start date
G

garrett0091

Guest
i have a 1980 suzuki GS1000GL and i have a question. the bike has a vance and hines 4 into 1 drag exhaust, pod air filters, accel super coils, dyna S ignition, and a dynojet stage 3 jet kit (without the HUGE 170 main jets installed), other then those mods everything else is stock on the bike.

my question is on the jetting.. i am currently running 135 mains and i have noticed that it peaks out at around 9000 rpm and is a little hesitant at take off. should i be jetting lower than 135's for my bike or is that fine? i believe the carbs are Mikuni BS34SS. I am running a vacuum fuel pump as-well.

if you have any sugestions on what main/pilot jets i should be running fell free to let me know.
 
garrett0091 said:
i have a 1980 suzuki GS1000GL and i have a question. the bike has a vance and hines 4 into 1 drag exhaust, pod air filters, accel super coils, dyna S ignition, and a dynojet stage 3 jet kit (without the HUGE 170 main jets installed), other then those mods everything else is stock on the bike.

my question is on the jetting.. i am currently running 135 mains and i have noticed that it peaks out at around 9000 rpm and is a little hesitant at take off. should i be jetting lower than 135's for my bike or is that fine? i believe the carbs are Mikuni BS34SS. I am running a vacuum fuel pump as-well.

if you have any sugestions on what main/pilot jets i should be running fell free to let me know.
Click to expand...

You want to follow these directions. That means selecting the main jet first. Speaking from experience it is much easier to do this with the motor under load so find a big hill and pull the hill at various throttle settings as you work your way down the list.
The Main is for WOT and you want to pull to redline.


http://www.factorypro.com/tech/tech_tuning_procedures/tuning_carbtune,CV,high_rpm_engines.html
 
garrett0091 said:
I am running a vacuum fuel pump as-well.
Click to expand...

Why? :confused:

Does gravity not work so well in your area?
icon_shrug.gif
 
Steve said:
Why? :confused:

Does gravity not work so well in your area?
icon_shrug.gif
Click to expand...

Thanks for joining us Steve. I just remembered I have to send out that part. I finished it and set it aside when I sent out the last batch of SSPBs; I just need to find where I put it so I would not forget it.
 
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