Sorry for the butchered lathe job, the steel is so soft the cutoff tool dug in and pulled it out of the chuck.
This was yesterday, ~1500ft , 53degF, slight uphill on pavement, 6th gear pinned for 5 seconds (it was a bit exciting).
2000 KDX200
Mods:
RB carb and head mod, CEK #3, 152 main, 40 pilot
FMF rev, TCII, Boysen power reeds, FRP torque spacer, modded airbox lid, Interceptor @ 40:1, 92 pump gas
So what do you guys think?
Click to enlarge:
Check out my plug chop
- strider80
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Check out my plug chop
Last edited by strider80 on 10:39 pm May 21 2007, edited 2 times in total.
2005 KTM 250EXC
2000 KDX200 (gone)
2000 KDX200 (gone)
- KDXer
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Looks very good to me. Not too rich and not too lean, 'bout perfect I reckon.
Compliments to Skipro for the pics and comments.
150 main
After 100+ miles (not sure which main, guessing 145)
Compliments to BJH.
A tad rich
42 and 1/2 out on the air screw.(Plug looks brand new at idle only)
7 slide ( Plug looks rich)
Needle@CEG-4. ( Bottom Mid- range wheelies)
Main at 155 (Plug looks lean to me see what you think)
1400 feet elevation at 50 degrees F
Compliments to Morie for the link below. It came from the thread in the 2nd link.
http://www.dirtrider.net/forums3/showth ... light=plug
http://www.kdxrider.net/forums/viewtopi ... &&start=20
Compliments to Skipro for the pics and comments.
145 mainI put up a couple of photos in my gallery. One is rich, like yours and one is slightly rich but runs good.
Basicly, a WOT read should show the black band as if drawn on with a pencil.
150 main
After 100+ miles (not sure which main, guessing 145)
Compliments to BJH.
A tad rich
42 and 1/2 out on the air screw.(Plug looks brand new at idle only)
7 slide ( Plug looks rich)
Needle@CEG-4. ( Bottom Mid- range wheelies)
Main at 155 (Plug looks lean to me see what you think)
1400 feet elevation at 50 degrees F
Compliments to Morie for the link below. It came from the thread in the 2nd link.
http://www.dirtrider.net/forums3/showth ... light=plug
http://www.kdxrider.net/forums/viewtopi ... &&start=20
"I want to die peacefully in my sleep like my grandfather, not screaming in terror like the passengers in his car."
- KDXer
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strider80 wrote:Do I need to machine off more steel to see the full mixture ring?
Wouldn't be a bad idea.
I just spin mine up in a drill press, move a hacksaw blade back and forth until I get a good groove in it where I want to cut it off, then I grab a large nut and cross thread it onto the threads, then finally put a spanner on the plug and cross threaded nut and by twisting them against each other it snaps off cleanly.
"I want to die peacefully in my sleep like my grandfather, not screaming in terror like the passengers in his car."
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- canyncarvr
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The ring is a good bit thicker (wider) than 1mm..although a 1mm ring is too close to suit me.
Using ski's ring change with one jet change as a guide, dropping to 150 should make things about right.
I run a 152 in cooler temps, most of spring and summer I run a 148.
Something tells me I've read that torque spacers give somewhat confused plug reads....
Re: 'Do I need to machine off more steel to see the full mixture ring?'
No.
But doing so would make it EASIER to see.
Happy trails!
Using ski's ring change with one jet change as a guide, dropping to 150 should make things about right.
I run a 152 in cooler temps, most of spring and summer I run a 148.
Something tells me I've read that torque spacers give somewhat confused plug reads....
Re: 'Do I need to machine off more steel to see the full mixture ring?'
No.
But doing so would make it EASIER to see.
Happy trails!
Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis
bike profile: !clicky!
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I'll bet you're pretty close. I use a 152/40 CEK-3 in the "cooler" months down here in Phoenix and a 150/38 in the "warmer" months. For one or two months in the freakishly-hot Arizona summer I drop down to a 148/35 and adjust the A/S just so my choke will work right.
Anyway, your chop looks just a little thicker than mine, but not much. Give up a little HP for some engine life, I suppose.
Rick
Anyway, your chop looks just a little thicker than mine, but not much. Give up a little HP for some engine life, I suppose.
Rick
I done KX-ed QuailChaser's KDX220R
- strider80
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