carb settings?

zakt

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#1
I have a 2000 KTM 380EXC and a gnarly FMF pipe. I pulled the plug yesterday and the plug is black so I assume to much gass what steps should I take to fix the prob?
 

Strick

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#2
Hey Reno!

To truly 'dial' a KTM jetting takes trial and error. The #7 slide works very well in Reno. Another option is to have NMS shave the stock slide. They get it real close to a #7.

Having said the above, my old 380 ('99) jetting is as follows:
45p
170m
shaved #6 slide
1369NS needle (#3)
a/s 1 3/4 turns
50/50 race/pump gas

If you don't want to put a lot of time and effort into it right away, start by lowering the needle one clip position at a time to see how this affects performance.

Good LucK!
 

zakt

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#3
so the 170m goes in the bottom after taking the nut off the carb... then the needle is that actually attached to the throttle cable? and then the 45p do I take off the bottom of the cab where the float is to replace that?
 

Strick

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#4
That is correct. You remove it with at flat blade screw driver. It is located next to the main.
 

Strick

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#6
Slide

The way NMS shaved the #6 slide ($15), was to make it into a #7. The shaved 6 closely resembles the #7, so the results in performance are similar.
 

zakt

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#7
kewl, now the FMF pipe do you know what kind of difference this will cause from per say the stock?
 

Strick

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#8
I have had both pro circuit platinum and fmf gnarly on KTMs. There is not a lot of performance gain over the stock pipe, IMO. The Gnarly is so beefy that it much harder to ding.
 

fremontguy

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#9
I was told the FMF setup runs richer than stock pipe combo.
 

fremontguy

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#11
The way I understand it is with Fmf fatty & core2 change, you need less fuel: smaller pilot, main, raise needle clip position, or maybe #7 slide. I'll now refer you to the experts.............
 
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#12
Y2K380 EXC Carb Settings

I live in lake havasu City Az which is a little lower elevation but higher temperatures. I have spent alot of time with the jetting on this bike and this is what works for me. A 178 main, #7 slide, CEK #3, 40 pilot, and the air screw at 1.5 out. This works great, and my plugs are a perfect tan color.
 

zakt

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#13
where is the best place to order a #7 slide? I'll just keep the stock one as is and just get the #7 and see how that goes.