kdx200 carb question

M

mr2by4

Member

Oct 26, 2008

8

0

• Nov 12, 2008

• #1

I have a 1991 kdx 200. The carb needs a rebuild (leaking from the bowl at least). I was considering instead of spending almost $100 on rebuild kit and new jets just getting a new Keihin PWK 35mm air striker (about $200).
How much trouble is it to swap this in? RB lists it as an option.
Can I expect better performance on a mostly stock 1991 KDX?
What are the best places to get rebuild kits or new carbs (price and service)?
Sorry if this has been posted somewhere but I could not find it.
thanks

 

J

julien_d

Member

Oct 28, 2008

1,788

1

• Nov 12, 2008

• #2

The best thing to do is just take it apart and see what needs replacing. If the bike is running now, it's likely you don't need to do much more than clean the jets and bowl, set the float level, and replace the o-ring seal for the bowl. You can find those individual pieces for just a few bucks.

If you're just itching to replace/upgrade it, your best bet would probably be to send it off here ( http://www.rb-designs.com/ )and let them work their magic. Lots of good feedback on their mods. I have no personal experience with them, but if I had the extra cash I would not hesitate to send my carb off to them tomorrow.

http://www.rb-designs.com/

J.

 

M

mudpack

Member

Nov 13, 2008

637

0

• Nov 20, 2008

• #3

mr2by4 said:

a new Keihin PWK 35mm air striker (about $200).thanks

Click to expand...

the RB Designs website lists the NEW Keihin PWK 35 mm Air Striker Carb at $340. :ohmy:

 

Last edited: Nov 20, 2008

L

lemmy

Member

Jul 24, 2008

139

0

• Nov 20, 2008

• #4

Yeah, I think it is that high because he has performed his mod (36mm bore and plate). I keep hearing people talk about the Air Striker, but I can't find any info on what having an Air Striker does for you.

 

M

mideastrider

~SPONSOR~

Jul 8, 2006

827

1

• Nov 20, 2008

• #5

Replaced old carb with the air striker carb on my 98 kdx. No trouble to change.

 

M

mr2by4

Member

Oct 26, 2008

8

0

• Dec 8, 2008

• Thread starter
• #6

Did you have to rejet the carb from the stock jets? Did it require different jets form what you were running on the old 35mm?
I have removed the snorkel and have an FMF fatty and Powercore. Curious what jets I should order if I am ordering a carb.
Any thoughts? Texas (@500 ft elevation temps of 40F and up only)
thanks

 

G

glad2ride

Member

Jul 4, 2005

1,071

1

• Dec 12, 2008

• #7

What is wrong with your current carb? Is the slide worn?

 

S

SVandal

Member

Jul 18, 2007

201

0

• Dec 12, 2008

• #8

My 94 leaked out the bowl. I bought a new o-ring, and leveled the top of the bowl with a file. It had warped somewhat so that it was gapping between the bolts. Took about 10 min and I took the high spots down a little and it seals fine now and I haven't had any issues with it over the last year.

 

M

mr2by4

Member

Oct 26, 2008

8

0

• Dec 18, 2008

• Thread starter
• #9

Choke was broken off in the carb. Possible that it had damaged the carb.
I wanted to be 100% sure that everything was in order. Now all I should have to do is maybe check the float level and jets.
So does anybody know if this thing will work as shipped or will I need to look at the float level and jets?

 

S

SVandal

Member

Jul 18, 2007

201

0

• Dec 18, 2008

• #10

You always need to check the floats and jets.

 

M

mr2by4

Member

Oct 26, 2008

8

0

• Dec 21, 2008

• Thread starter
• #11

settings on stock PWK 35MM S65 are
main#160 slow#48 needle 48DEK throttle valve C.A.4.5

At 400 ft of altitude with snorkel removed and FMF Fatty pipe and power core exhaust, do these sound close?

 

H

hrsey71

Member

Mar 16, 2009

1

0

• Mar 16, 2009

• #12

hi i have a carb problem with my 91 kdx 200. the bike is stock with a pro circut pipe and fmf silencer. stock carb with 48 pilot and 150 main. the bike idles but the idle screw is turned all the way in with no change in idle. also the bike smokes a little more than normal. any suggestions on what it could be? it has a fresh top end rebuild