Opinion on Mikuni BS (CV) Jetting

[Guest]

I am rebuilding my stock carbs on my 1980 GS 550E. I heard it will run better if I re-jet it to the specifications of the Canadian Version.

I would be interested in knowing how you all feel about this.

Thanks

[hjfisk]

I don't know about Canadian specs but if it has a pipe , or after market air filters[pods] you will have to rejet it anyway to make it run right. Although even stock they do benefit from going up one jet size as the factory sent them out on the lean side.

[nastyjones]

I am rebuilding my stock carbs on my 1980 GS 550E. I heard it will run better if I re-jet it to the specifications of the Canadian Version.

I would be interested in knowing how you all feel about this.

Thanks

You might be talking about the fact that Canadian carbs have adjustable needles. At least my BS34's do, not sure about 550's though.

[081dbx64]

Here is what I found in the sticky on the carb section. I have all stock parts. What does the bypass specification mean?

GS550 (80-82) the specs are for the CV's

idle r/min 1100-+/-100r/min
carb mik bs32ss (4 seprate carbs)
id no 47160 (us) 47170 (can)
bore size 32 (1.26)
float height 22.4.+/-1.0 (0.88 +/-0.04)
fuel level 5.0+/-0.5 (0.20 +/-0.04)
main jet #92.5
main air jet 1.6
jet needle (4bel2 us model) (5f42-3rd notch canadian adjusable needle)
needle jet x-6
pilot jet #40
throttle valve #135
by pass (0.9, 0.7, 0.7 us model) (1.0,0.8,0.8 canadian)
pilot outlet 0.7
valve seat 2.0
starter jet #35
pilot screw 3.5 turns back (mixture screw)
pilot air jet (us model #150) (#120 canadian)

[081dbx64]

Where do I go to get new jets? And what jet do I change?