NC30 carby jetting - DIY guide

[karikeo]

I have a standard bike
I installed and 120f and 122r jets
and also place the washers and enlarge the hole with the drill

but got no improvements
even it shows a mixture rich in benzene
some help

You have a standard bike?

Standard intake and exhaust?

If so, you should be running 115 front and 118 rear I would say.

You have made it too rich

my bike has the air filter and intanke standard and intall full exhaust whit springs and tyga moto magot
previous jet is 115 and 118
the mixture feels rich (this spicy)

[bikemonkey]

Have you had it tested on a dyno/rolling road?

[CMSMJ1]

@ Pip = no, the speed limiter is 180kmh and it cuts the rear cylinders
If the CDI cannot "see" the speedo then it cuts the cylinders at 5.5k

So, if your instrument cluster fuse is gone, no power return from speedo = limp home.

@karikeo - where are you in the world? What altitude/environmental conditions?

[karikeo]

@ Pip = no, the speed limiter is 180kmh and it cuts the rear cylinders
If the CDI cannot "see" the speedo then it cuts the cylinders at 5.5k

So, if your instrument cluster fuse is gone, no power return from speedo = limp home.

@karikeo - where are you in the world? What altitude/environmental conditions?

i from chile sud america

[bikemonkey]

How high up from sea level do you live/ride the bike?

[karikeo]

How high up from sea level do you live/ride the bike?

550 meters of lever of sea

[bikemonkey]

I am not an expert on altitude but you may still be running too rich even with a full system due to the thin air.

Someone else should know more when it comes to this

[karikeo]

I am not an expert on altitude but you may still be running too rich even with a full system due to the thin air.

Someone else should know more when it comes to this

if remove air filte i have some improvement?

[bikemonkey]

I think you would make it worse, this bike does not like it's intake being messed about with.

EDIT: that is if you have a NC30/35. But taking the air filter out without changing other things won't help any bike that much usually.

[karikeo]

i have aftermarket filter ,that influences