28mm mukini jetting

[GNR101]

hey help please any1

my jetting is 27.5 and 270 mains. needle clip 1 above the middle. (plug is tanned....) i ride sea lvl 27-32 degree days...(australia)

mods are

VF3

28mm carbs makuni

fmf sst + turbine cores

20cc domes and coolhead

mild trail/dune port

k&n inbox filtser (no lid)

 

its very boggy down low.. sounds kinda like when u kill the ignition and go full throttle. (but not that bad it still revs)

once it hits band it revs and runs great

but if u drop outa band it bogs right off.

carbs and jets veins are all clean and clear

[RUDEDAWG]

I am no jetting expert, but, I would try raising the needle one or two notches, which means putting the clip down lower on the needles and adjust your air screws in a little, just my .02.

Edited December 31, 2008 by RUDEDAWG

[firebanshee]

What he said^^^^^^^^^^^^^^ :cool:

[Snopczynski]

hey help please any1

my jetting is 27.5 and 270 mains. needle clip 1 above the middle. (plug is tanned....) i ride sea lvl 27-32 degree days...(australia)

mods are

VF3

28mm carbs makuni

fmf sst + turbine cores

20cc domes and coolhead

mild trail/dune port

k&n inbox filtser (no lid)

 

its very boggy down low.. sounds kinda like when u kill the ignition and go full throttle. (but not that bad it still revs)

once it hits band it revs and runs great

but if u drop outa band it bogs right off.

carbs and jets veins are all clean and clear

 

28mm mikuni round slides (vm)? or 28mm mikuni flatslides ?

[GNR101]

28mm mikuni round slides (vm)? or 28mm mikuni flatslides ?

 

 

round slides... (and there in the right way)

 

ive tryed what the otheres said... about leaning off the clip... its better but still boggy.

[RUDEDAWG]

round slides... (and there in the right way)

 

ive tryed what the otheres said... about leaning off the clip... its better but still boggy.

 

If you raise your needle and turn your air screws in a tad you will be actually riching her up a bit.

 

also 270 mains seem very lean to me, I run 270 mains @ 4800' and it runs like a champ. If I run bigger it runs like poo.

Edited December 31, 2008 by RUDEDAWG

[Snopczynski]

30 pilot and 380 mains. What needles are in it?

[GNR101]

30 pilot and 380 mains. What needles are in it?

 

 

380 mains???

 

if i leAN the needle is its better..

 

stock rd needles

Edited December 31, 2008 by GNR101

[Snopczynski]

380 mains???

 

if i leAN the needle is its better..

 

stock rd needles

 

RD350 needles? What size is that?

 

Your running 270 mains! You would usually run 270 mains in a stock motor with a stock carb banshee. Why do you think it needs 270 mains with everything you have done. You have 28mm mikuni carbs on a ported motor with compression, mid-top pipe and a mid-top reed cage setup. Your also riding in a dense air climate. If its too rich you can go leaner. If its too lean, you can always rebuild the motor after it blows up.

[GNR101]

hey ive put some 300 mains in with the needle clip in the middle still got the 27.5 pilot with the mixture out 3 turns so ill try 30s

it picks up really well... all the bogging issues are gone feels more powerfull up top to.. plug chop still a little leanish. so ill play around with the mains till its right...

 

so thanks all for ur help hey.

 

oh yeh Snopczynski the needles have 5N7 there the only markings on them

[Snopczynski]

hey ive put some 300 mains in with the needle clip in the middle still got the 27.5 pilot with the mixture out 3 turns so ill try 30s

it picks up really well... all the bogging issues are gone feels more powerfull up top to.. plug chop still a little leanish. so ill play around with the mains till its right...

 

so thanks all for ur help hey.

 

oh yeh Snopczynski the needles have 5N7 there the only markings on them

 

 

Hmmm, not sure where that needle fits in on the scale. But, you need to get the mains dialed first, then worry about fine tuning the needle settings. The needle jets in that carb can help set ranges on your mid jetting too.