MI 220 jetting

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May 3, 2001
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#1
hey guys, new member to the site, but have been visiting for a while and thanks to you guys ( and visa ) I'm installing a weisco piston, fmf rev, tc II, and reeds on my '97 220. Air box mod already in use. I mostly ride in northern michigan and was wondering if somebody who also rides in the area has these mods and what jetting they use. Also a BR7 or a BR8??? Thanks in advance for any info.
 

fishhead

die you sycophant !
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May 22, 2000
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#2
With those mods I ran a 148 main, clip in the middle on the needle and a 45 pilot. that was good up to 3000 ft and 70F. If you haven't already done so, check out the just kdx page and look up tech tips/engine/carb tuning, there's a lot of good info there. Unless you run hard most of the time I would give a br7es a try. Remember to check the main jet by doing a plug chop, its a lot less trouble than a siezed engine.
 
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#3
Whats is the stock jetting for a 220??? The manual only gives it for the 200 and I know it can't be the same.
 

Canadian Dave

Super Power AssClown
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#4
Stock jetting is a 45 pilot and a 145 main. Use the BR7ES. The 8 is too cool to keep clean even if you're running the proper jetting. Kawasaki is as conservative with plug heat ranges as they are with jetting.

David
 
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Fred T

Mi. Trail Riders
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Mar 23, 2001
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#5
MI Jetting

I have the Rev pipe and air box mod to my newly purchased KDX 220. I run the stock 45 pilot jet, 145 main and needle on 2nd from top. air screw is about 3/4 turns out. My bike runs great in MI woods. I bought a 148 and 150 main but never installed them because the bike runs so good and plug readings look good. I don't hold it WFO much so as the weather warms up I figured the 145 main would be allright. As the fall approaches I will put the 148 main in it. I've been riding in upper 60 to 70 degree weather lately. Oh, btw I run the BR8ES plug too.
 
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Mar 23, 2001
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#6
So does that mean I'm better off going to the BR7ES also? My bike is purely stock, with the exception of Renthal bars and no airbox cover. I ride up in northern MN, very similar to MI. Any given day can be 60F or 90F degrees. I do plan on at least moving the clip and turning the airscrew, once I figure out how that is. I'm new and the bike has a whopping 50 miles on it.
 
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May 3, 2001
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#7
thanks guys.......the mods go on this week, as soon as my back ordered piston arrives. Hopefully I'll be ready for Memorial Day weekend.
 
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#8
Hey gino97, Looks like we have the same taste. Tell me that your ZX9 is green. You had to go for the green one. They look like a matching pair in the garage.

As for your question, I have a 98 220 with wiseco, fmf, boysen reeds, air box lid removed, fmf silencer and the jetting I ended up liking is a 48 pilot and a 152 main. It works well in colder weather and pretty good in this weather. It loads up a little if you are not on it for a while. I just pop the throttle and it cleans out and goes. I have tried up to 52 pilot and 155 main. Way too rich. I also moved the needle clip down one. I had to push it back into the garage. I think a larger carb or boring job is next.