i just jetted my brand new quad with a dyno jet kit to the specs. it got rid of the bog and has excellent power now i also put a new fuel screw in also. i noticed that when i put it in neutral the header was bright red from the heat the fan will kick on and off and you give it throttle it really turnd red the over heat light doesnt come on. it just seems that the header gets real red is that normal or am i missing something im still running stock header and pipe till i can afford a new set any help or suggestions please

IF YOU PUT THE JET KIT IN CORRECTLY... DID YOU ADJUST THE FUEL SCREW TO SPECS?

yes it said to adjust adjust 1.5 turns out

Assuming you aren't running lean....don't sit around with it idling and getting hot. Get moving and that header will cool off....

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Desert: 450R
Trail: 400EX
Technical Trail: Rancher 420 and 350 4X4's
Kids: Two 250EX's and 90
Dual-Sport Bike: XT225

Past rides: 300EX, 2wd Rancher 350, Recon, TRX90, Z400, LT160, LT80, Warrior, Blaster, CRF230F

Edited: 05/08/2008 at 12:13 AM by reconranger

I understand the header material is made out of something different (thinner) and gets hot faster. This is soposed to be normal and will not hurt anything. Did you also bump up your piolet jet? Do you have the airfilter lid off?

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2006 Honda 450ERRRRRRRRRRRRRR<BR>2005 Yamaha KodiaK 450...crashed/Totaled<BR>2005 Honda 250EX (sold but never forgotten)<BR>2003 Yamaha Raptor 80<BR>2006 Sukuki ZZZZZZ400
GRIZZLY 700 FI........nothing compares!

What RR said. When I let mine sit and run, especially when it is dark, my pipe is flaming red...let er' out and run!!

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07 TRX450R HRC
07 420 4x4 Rancher
08 400EX

the pilot jet is still the same should i bump it up and the box lid is still on without the snorkel