38mm Mikuni carb only 3hrs on it

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5/29/2018 2:41 PM
Edited Date/Time: 6/6/2018 6:36 AM

38mm Mikuni carb off my 18 KTM 150SX works great and comes with all the extra needles and jets. Will work on lots of other 2 stroke bikes. $250 with free shipping in the U.S Robinmac82@yahoo.com Photo Photo Photo Photo Photo Photo

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5/30/2018 10:44 AM

Did you put a Keihin or a Lectron on it ?
I actually got the carb jetting specs from KTM Race team and the bike rips !! I feel no need to bother changing carbs.

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5/30/2018 11:00 AM

langhammx wrote:

Did you put a Keihin or a Lectron on it ?
I actually got the carb jetting specs from KTM Race team and the bike rips !! I ...more

Ended up putting a Keihin on it. Honestly I thought it ran fine till I rode a buddies with a Keihin. Throttle response from bottom to mid was noticeably cleaner with the Keihin. Plus I hate fooling with jetting. Rather set it up once and leave it alone.

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5/30/2018 11:48 AM

langhammx wrote:

Did you put a Keihin or a Lectron on it ?
I actually got the carb jetting specs from KTM Race team and the bike rips !! I ...more

what did you end up w/for jetting?

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5/30/2018 1:00 PM

If it helps your sale, I have got the Mikuni carb running perfectly on my KTM. Was really happy with it at Southwick last weekend.

Skip to 8 min 55 sec:

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5/30/2018 1:19 PM

langhammx wrote:

Did you put a Keihin or a Lectron on it ?
I actually got the carb jetting specs from KTM Race team and the bike rips !! I ...more

What are the specs from the KTM race team? Any chance you have them for a 250SX as well?

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5/30/2018 3:05 PM

langhammx wrote:

Did you put a Keihin or a Lectron on it ?
I actually got the carb jetting specs from KTM Race team and the bike rips !! I ...more

opyguy wrote:

what did you end up w/for jetting?

I bought a Keihin from JD jetting and it has his custom needles. Blue needle 3rd clip, 190 main 45 pilot. 1-1/2 on air screw

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5/30/2018 3:09 PM

Bruneval wrote:

If it helps your sale, I have got the Mikuni carb running perfectly on my KTM. Was really happy with it at Southwick last ...more

Seems like some are doing great with their Mikuni's. I myself thought mine was setup good then the weather got real humid and sputtered a little bit no matter what I changed, and rode a buddies 150 with a Keihin the same day and ended up buying one. I'm sure I could have got the Mikuni dialed, just didn't feel like fooling with it since I got a great deal on a Keihin setup.

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5/30/2018 4:18 PM
Edited Date/Time: 5/30/2018 4:18 PM

langhammx wrote:

Did you put a Keihin or a Lectron on it ?
I actually got the carb jetting specs from KTM Race team and the bike rips !! I ...more

erik_94COBRA wrote:

What are the specs from the KTM race team? Any chance you have them for a 250SX as well?

30 pilot
42-71 needle in the 3rd (w/stock pipe)
(2nd w/FMF Fatty and 2.1)
470 main
S-4 nozzle
2- 2 1/2 air screw

I don’t have the 250’s but I will see if I can get them.

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5/30/2018 5:20 PM

langhammx wrote:

30 pilot
42-71 needle in the 3rd (w/stock pipe)
(2nd w/FMF Fatty and 2.1)
470 main
S-4 nozzle
2- 2 1/2 air screw

I don’t have ...more

250 specs would be great!

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5/31/2018 6:32 AM
Edited Date/Time: 5/31/2018 6:34 AM

Altec wrote:

250 specs would be great!

This is an amazing carb when set up correctly. Mine is to the point that I have to drop to the 4th clip position when its cold out and the 3rd when its warm/hot out.

This is what worked best for me on C12 mixed at 60:1. It should also be fine on 50/50 pump/race.

MJ 470
PJ 32.5
Slide 5.75
Needle 42-75
Clip 3rd position
Needle jet s-4
AS 2.0

Link for the slide https://www.motosport.com/oem-parts/part-number/16025-0003?mmysource=kawasaki;kx125;2004&partgroup=carburetor

or you can have the stock one modified cheaper http://www.rb-designs.com/rb_designs_llc_013.htm

link for the needle https://www.babbittsktmparts.com/oemparts/p/ktm/55431034400/jet-needle-6bfy42-75

link for the needle jet https://www.babbittsktmparts.com/oemparts/p/ktm/55431021400/needle-jet-s-4

Video so you can hear the bike run and on track. Notice no hanging idle and no hesitation with instant throttle response.

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2018 KTM 250sx
Instagram CamaroAJ

5/31/2018 7:58 AM

langhammx wrote:

Did you put a Keihin or a Lectron on it ?
I actually got the carb jetting specs from KTM Race team and the bike rips !! I ...more

erik_94COBRA wrote:

What are the specs from the KTM race team? Any chance you have them for a 250SX as well?

langhammx wrote:

30 pilot
42-71 needle in the 3rd (w/stock pipe)
(2nd w/FMF Fatty and 2.1)
470 main
S-4 nozzle
2- 2 1/2 air screw

I don’t have ...more

Thanks for sharing. I have a second Mikuni that I have been considering trying on my '14 150SX. This will be a good starting point.

Already have a pretty good setting for my '17 TC250, but wouldn't mind trying a another one.

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6/3/2018 7:01 AM

Still for sale

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6/6/2018 6:36 AM
Edited Date/Time: 6/6/2018 6:37 AM

Will do $250 and free shipping in the U.S

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6/13/2018 10:54 AM

Bump $235 shipped in the U.S

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6/18/2018 9:53 AM

Still for sale.

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6/30/2018 5:30 AM

$200 plus shipping!

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7/10/2018 10:39 AM

$200 free shipping in the U.S!

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