Cherry red header should I be worried?

[cthomps07]

Ok I just noticed it tonight but the header on my R is cherry red once it has been idleing for 5 mins or so and if I ride it around the yard. The problem is it runs perfect with the pilot I have in. I tried the next size bigger before and it was terrible and bogged out bad even with the fuel screw all the way in. I turned the fuel screw out with the 42 pilot thats in it now and it didnt make a difference in the color of the pipe its about the first 6 inches. Its not as noticeable during the day but I can really see it at night of course. I am wondering if it is a major problem or not?

That's normal.

[XXXRACER165]

My dad's 450R is the same way.

[cthomps07]

Good to hear. I just happened to notice it. Never happened before even with the stock pipe. I was hoping I didnt have to change anything I finally have it where it runs good.

[derrickwade]

you are in grave danger! that means your quad is about to blow up. j/k i can light a cigarette off mine.

[One_Bad_400]

just quite running that propaline oxide in there and you'll be fine :bandit:

[pro-rider46]

aftermarket exhaust use thinner tubing and the heat is shown through the thinner metal tube better.

[ShiftFMX]

Yeah, mines like that, especially at night

[SpeedyWho]

Originally posted by ShiftFMX
Yeah, mines like that, especially at night

Mine Also

[redrider03]

yup, mine too!

[BlaineKaiser450]

Originally posted by redrider03
yup, mine too! same here

[redexrider4290]

me to

[250x_kyle]

sports quad headers are made out of thin metal to save weight wich is why the glow cherry red. jetting could also make it glow farther out.

[Sjorge450R]

dang.... I wanna my pipe red....lol. I keep hearing about this all the time and even with my stock pipe i never saw anything.

[400exrider707]

Originally posted by Sjorge300EX
dang.... I wanna my pipe red....lol. I keep hearing about this all the time and even with my stock pipe i never saw anything.

The stock pipe is a lot thicker, you shouldn't be seeing it on a stocker, on a stock pipe its definitely a bad thing to see. I'm not a fan of it personally, I guess a slight red color in the first few inches ok, but I've seen some glowing bright red after only a minute or so much farther out up to 8" out of the head... thats too much IMO.:o

[4ABURN]

Its funny you say that. When I brought my 06 home it was winter started it for the first time went inside to get a warm jacket on came out and the stock header was RED hot for about 12 inches maybe more boy that scared my a little. next day put in 45 pilot now it only 6 inches and runs like a champ.( emmisions !!!!!!!!!):mad: :mad:

[SpeedyWho]

Did changing the pilot change any thing else? I could care less about emissions I want my machine to run efficient and safely I dont want all the heat it makes running soo lean.

[4ABURN]

the 45 pilot helped it start and run better I have also put in crf needle and put in a 165 main with no lid. put in 160 main in winter with a custom lid ( about 20 3/8 size holes around tha outside) of lid to keep snow off filter. works great.:D