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Ktm200 Jetting

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jsimo...@my-deja.com

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Nov 30, 1999, 3:00:00 AM11/30/99
to
I am trying to smooth out the acceleration on my ktm 200. The
acceleration on top is really good. However, in the lower part of the
powerband, the engine is really rough and doesn't accelerate smoothly.
I would also like to gain maximum power the entire powerband. I enjoy
having the front end come up on me, but in a controlled manner. Here
are my current carb settings:

Main Jet - #180
Pilot Jet - #42
Needle - NOZI
Clip Position - 2nd from top
Air Screw - 1.5 turns

Any recommendation would be greatly appreciated.

I just recently repacked the exhaust. Filter is clean and rings were
just replaced. I typically ride at sea level to 2500 feet. Thanks for
your help.

Jsimon
ktm200
yz250


Sent via Deja.com http://www.deja.com/
Before you buy.

Jim Hall

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Nov 30, 1999, 3:00:00 AM11/30/99
to
jsimo...@my-deja.com wrote:

>I am trying to smooth out the acceleration on my ktm 200. The
>acceleration on top is really good.

This is main jet.

>However, in the lower part of the
>powerband, the engine is really rough and doesn't accelerate smoothly.

Needle, and (for right off idle) the pilot jet.

>I would also like to gain maximum power the entire powerband. I enjoy
>having the front end come up on me, but in a controlled manner. Here
>are my current carb settings:
>
>Main Jet - #180
>Pilot Jet - #42
>Needle - NOZI
>Clip Position - 2nd from top
>Air Screw - 1.5 turns
>
>Any recommendation would be greatly appreciated.
>
>I just recently repacked the exhaust. Filter is clean and rings were
>just replaced. I typically ride at sea level to 2500 feet. Thanks for
>your help.

I'm not a 200 guru, but I'd go to the NOZH needle, it is a step
leaner. Failing that, drop your current needle all the way down (clip
in top position) but this may not entirely fix the problem. You'd
gain some more adjustment with the OZH.

I'd be somewhat tempted to lean it across the board (40 pilot, and a
178 main, - that's what works for my 380. For you though, I'd start
with the needle first, and then maybe the pilot.

FWIW the difference between 0 and 2500 feet is about one and a half
sizes on the main jet, and maybe a clip position on the needle.

Jim Hall
380 EXC and others
turning Money into Noise...

Thank you Big Joe's Cycle; Plateau Engineering

Simmonsmc

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Nov 30, 1999, 3:00:00 AM11/30/99
to
i can find out what jetting my dad has in his 200 it seems to be spot on do you
have an MXC or the EXC ? on the MXC we dropped 3 teeth on the rear sprocket and
added a stealy flywheel weight and it made a big difference, it's a great mod
for any one!
Mike Simmons
99 KTM 300 MXC
AMA Dist.36

jsimo...@my-deja.com

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Dec 1, 1999, 3:00:00 AM12/1/99
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In article <19991130143922...@ng-cs1.aol.com>,
Hi Mike, I have an EXC200. Thanks, J Simon

Chris Orndorff

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Dec 1, 1999, 3:00:00 AM12/1/99
to
Many KTMs, regardless of displacement, react very well to a #7 slide.
Which is where it sounds like your problem is.

-Chris Orndorff

jsimo...@my-deja.com wrote:

> I am trying to smooth out the acceleration on my ktm 200. The

> acceleration on top is really good. However, in the lower part of the


> powerband, the engine is really rough and doesn't accelerate smoothly.

> I would also like to gain maximum power the entire powerband. I enjoy
> having the front end come up on me, but in a controlled manner. Here
> are my current carb settings:
>
> Main Jet - #180
> Pilot Jet - #42
> Needle - NOZI
> Clip Position - 2nd from top
> Air Screw - 1.5 turns
>
> Any recommendation would be greatly appreciated.
>
> I just recently repacked the exhaust. Filter is clean and rings were
> just replaced. I typically ride at sea level to 2500 feet. Thanks for
> your help.
>

> Jsimon
> ktm200
> yz250

David Jones

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Dec 1, 1999, 3:00:00 AM12/1/99
to
On Tue, 30 Nov 1999 08:47:14 -0700, Jim Hall <jdh...@plateau.com>
wrote:

>jsimo...@my-deja.com wrote:
>
>>I am trying to smooth out the acceleration on my ktm 200. The
>>acceleration on top is really good.
>

>This is main jet.
>

<snip>

>I'm not a 200 guru, but I'd go to the NOZH needle, it is a step
>leaner. Failing that, drop your current needle all the way down (clip
>in top position) but this may not entirely fix the problem. You'd
>gain some more adjustment with the OZH.

richer <-NOZG <-> NOGH <-> NOZI -> leaner

>Jim Hall

David - 99 KTM 200EXC
Email: djo...@cyberhighway.net
Home of the "The Very Unofficial RMD Page"
http://www.cyberhighway.net/~djones/

Jim Hall

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Dec 1, 1999, 3:00:00 AM12/1/99
to
djo...@cyberhighway.nospam.net (David Jones) wrote:

>>I'm not a 200 guru, but I'd go to the NOZH needle, it is a step
>>leaner. Failing that, drop your current needle all the way down (clip
>>in top position) but this may not entirely fix the problem. You'd
>>gain some more adjustment with the OZH.
>
>richer <-NOZG <-> NOGH <-> NOZI -> leaner

You're right. For some reason I misread his original post and thought
he had a G. Damn!.

Forget what I said. He may want to take Chris' suggestion and try
changing the slide then.

David. What are you running in yours?

Gene

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Dec 3, 1999, 3:00:00 AM12/3/99
to
I'm running a NOZG needle with it's clip at the top.
Pilot jet 42. Main Jet 182. #6 for the moment, getting a slide #7 real soon.
attitude 0-250 ft.
Maybe you'd like to try that.
some people have said it's better to use a richer and lean it all the way to
the top position.

Gene.
'98 KTM 200 E/XC

Chris Orndorff <xdez...@airswitch.net> wrote in message
news:384474BA...@airswitch.net...


> Many KTMs, regardless of displacement, react very well to a #7 slide.
> Which is where it sounds like your problem is.
>
> -Chris Orndorff
>

> jsimo...@my-deja.com wrote:
>
> > I am trying to smooth out the acceleration on my ktm 200. The

> > acceleration on top is really good. However, in the lower part of the
> > powerband, the engine is really rough and doesn't accelerate smoothly.
> > I would also like to gain maximum power the entire powerband. I enjoy
> > having the front end come up on me, but in a controlled manner. Here
> > are my current carb settings:
> >
> > Main Jet - #180
> > Pilot Jet - #42
> > Needle - NOZI
> > Clip Position - 2nd from top
> > Air Screw - 1.5 turns
> >
> > Any recommendation would be greatly appreciated.
> >
> > I just recently repacked the exhaust. Filter is clean and rings were
> > just replaced. I typically ride at sea level to 2500 feet. Thanks for
> > your help.
> >
> > Jsimon
> > ktm200
> > yz250
> >
> > Sent via Deja.com http://www.deja.com/
> > Before you buy.
>


------
Posted via news://freenews.netfront.net
Complaints to ne...@netfront.net

jsimo...@my-deja.com

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Dec 3, 1999, 3:00:00 AM12/3/99
to
In article <8265kp$1ril$1...@dolf.netfront.net>,

"Gene" <e_u_...@yahoo.com> wrote:
> I'm running a NOZG needle with it's clip at the top.
> Pilot jet 42. Main Jet 182. #6 for the moment, getting a slide #7
real soon.
> attitude 0-250 ft.
> Maybe you'd like to try that.
> some people have said it's better to use a richer and lean it all the
way to
> the top position.
>
> Gene.
> '98 KTM 200 E/XC
>
Hi Gene,
Thanks for your input. I have scaled down my Main,Pilot and Needle to
the next size leaner. The main reason is because the plug shows signs
of running very rich and the exhaust has excessive black oil dripping
out.

Do you experience oil coming out of your exhaust? If so, about how
much per ride. I usually have a black oil line that extends down to
drain bolt. Not sure if this is typical for other 200's.

How does your plug look with your current carb settings?

I spoke with another Ktm200 rider about the different slides available.
He also indicated to change the slide, however, he told me to have the
slide modified to a #6.5 instead of buying a #7 slide. First he told me
that the slide improves throttle response. He told me that a #7 slide
is very responsive and he had a hard time keeping his front wheel on
the ground. Said it was a problem when he wanted to climb steeper hills
with tight turns. He felt that a better alternative was to have a #6
slide machined to a (#6.5). The cost is about $20 to $25.

My initial goal is to first smooth out the powerband. Then add more
throttle response. I will probably get my slide modified to (#6.5).

I will have time Saturday to test the new settings and fine tune my
carb more if necessary. I will let you and the others on this thread
know how the settings worked out.


Thanks, Julius Simon

JIMSKTM250

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Dec 3, 1999, 3:00:00 AM12/3/99
to
I'm running a 1366 needle 2nd from the top a 48 pilot and a 190 main in my 99
200 exc.
Know a few other people using this combo here in new hampshire.I popped in a
50 pilot getting ready to use the spikers.Bike runs clean no major spooge,
plug color is good.

It seemed wierd jetting my ktm fatter than stock...... But the needle keeps
things in check, Also it was a 1366n

I want to try the #7 but dont want to do the jetting thing again.(I went to
this from stock and have been happy)

Good luck
JIM
99 KTM200 EXC

David Jones

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Dec 3, 1999, 3:00:00 AM12/3/99
to
On Fri, 03 Dec 1999 05:26:16 GMT, jsimo...@my-deja.com wrote:

>In article <8265kp$1ril$1...@dolf.netfront.net>,
> "Gene" <e_u_...@yahoo.com> wrote:
>> I'm running a NOZG needle with it's clip at the top.
>> Pilot jet 42. Main Jet 182. #6 for the moment, getting a slide #7
>real soon.
>> attitude 0-250 ft.

>> Gene.


>> '98 KTM 200 E/XC
>>
>Hi Gene,
>Thanks for your input. I have scaled down my Main,Pilot and Needle to
>the next size leaner. The main reason is because the plug shows signs
>of running very rich and the exhaust has excessive black oil dripping
>out.
>
>Do you experience oil coming out of your exhaust? If so, about how
>much per ride. I usually have a black oil line that extends down to
>drain bolt. Not sure if this is typical for other 200's.

Sounds pretty normal for all the KTMs I ride with, including mine.

<snip>
>
>
>Thanks, Julius Simon

jsimo...@my-deja.com

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Dec 4, 1999, 3:00:00 AM12/4/99
to
In article <3847dddf...@news.cyberhighway.net>,

djo...@cyberhighway.nospam.net (David Jones) wrote:
> On Fri, 03 Dec 1999 05:26:16 GMT, jsimo...@my-deja.com wrote:
>
>
>
>
> Sounds pretty normal for all the KTMs I ride with, including mine.
>
Thanks David this is good to know. Julius

jsimo...@my-deja.com

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Dec 4, 1999, 3:00:00 AM12/4/99
to
In article <0pr74s0lvsi2tl2qf...@4ax.com>,
jdh...@plateau.com wrote:
> jsimo...@my-deja.com wrote:
>
> Thanks Jim for the info. I did scale down my carb settings by 1 as
you have recommended. However, it did not run very well. I think I
went the wrong direction.

Gene, on this same thread gave a carb setting recommendation that I
will try next.


> I'm not a 200 guru, but I'd go to the NOZH needle, it is a step
> leaner. Failing that, drop your current needle all the way down (clip
> in top position) but this may not entirely fix the problem. You'd
> gain some more adjustment with the OZH.
>

> I'd be somewhat tempted to lean it across the board (40 pilot, and a
> 178 main, - that's what works for my 380. For you though, I'd start
> with the needle first, and then maybe the pilot.
>
> FWIW the difference between 0 and 2500 feet is about one and a half
> sizes on the main jet, and maybe a clip position on the needle.

This is good info for me to have for the future. Thanks
>
> Jim Hall

jsimo...@my-deja.com

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Dec 4, 1999, 3:00:00 AM12/4/99
to
In article <8265kp$1ril$1...@dolf.netfront.net>,
"Gene" <e_u_...@yahoo.com> wrote:

> I'm running a NOZG needle with it's clip at the top.
> Pilot jet 42. Main Jet 182. #6 for the moment, getting a slide #7
real soon.
> attitude 0-250 ft.

> Maybe you'd like to try that.
> some people have said it's better to use a richer and lean it all the
way to
> the top position.
>

> Gene.
> '98 KTM 200 E/XC
>

Gene, I did try the scaled down settings from my original post. It ran
very poorly. I will try your recommended settings today and let you
know very shortly how it has worked out. Thanks again for your input.

Julius

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