I'm re-evaluating the jetting on our 2001 220, because the pipe gets really hot. I mean hotter than normal. It smells like burning pipe. It has a gold-ish, gray toasted color all over.
It cooks when my son rides it, and I think he is probably revving it a lot more than I do.
The carb currently has:
142 Main Jet
Stock slow jet, throttle vavle, and needle (3rd clip from the top)
40 Pilot Jet
I think the Air Screw is 1.5 turns
Conditions:
60 - 80 degrees F
500 - 8000 ft ASL
Bike:
2001 220
FMF Knarly Desert (new, clean)
FMF TC II freshly packed
V-Force III reed cage (pretty new)
40:1 2R Yamalube
Nice, clean Twin Air filter
Snorkel removed, extra holes in a/b lid
plug looks good
no pinging
Excellent throttle response throughout the range
Coolant is NOT boiling over.
Any suggetions?
Barry
Hot pipe
- rbates9
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- barryadam
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My KDX 220 does the same thing when my son rides it. It has the RB mods and desert pipe. I ride it like a trail bike. My son rides it like a 125, Full throttle and he doesn't like to let off. When he pulls up to the truck the pipe is a little more discolered then when he left.
I don't think it hurts anything. Although I hate to hear my bike being wound up and ridden that hard I think it helps burn the crud out of the engine and pipe.
I don't think it hurts anything. Although I hate to hear my bike being wound up and ridden that hard I think it helps burn the crud out of the engine and pipe.
KX 250, KDX 220, KDX 220, KDX 200, CR 80
I don't believe in a society where the thrill of living is traded for the safety of existance---Nick Inatsch
I don't believe in a society where the thrill of living is traded for the safety of existance---Nick Inatsch
- barryadam
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Ok, so maybe my son was not revving it so much as I thought. Turns out, for some strange reason in the past, I had leaned out the main jet, and the pilot jet was down to a #40.
So I returned the jetting to stock - pilot to a #42, the main to #145, and everything was fine.
So I returned the jetting to stock - pilot to a #42, the main to #145, and everything was fine.
"I hate heli-coils. They are like hospice for motorcycle parts."- BDI
- Mr. Wibbens
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Someone say hot pipes?
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