[04flamedyfz]

just did the gytr exhaust and header pipe jetted to 45 pilot and 165 main needle on 3rd clip. out running it checked plug light brownish color, good there went for another ride dark out and looked down header pipe is glowing red is this normal? don't want to burn the piston up. let me know please

 

[DieSteveDie]

my bike is stock and if i ride at night mine glows, so do most people i have talked to so pretty sure its normal.

 

[OffRoadAce]

I am stock right now and I run 45/165. Mine still glows, but much less now that I am not so lean.

You may want to jet up with the exhaust. Not sure on specs, but maybe 48/168 or 170.

Here was my post about my head pipe a while ago.

http://www.yfzcentral.com/invision/index.p...&t=2692&hl=head

 

[Tampa450]

Yep, my bike does it too.

Let it warm up a bit, then ride it, dont idle it!

 

[wildman77]

mine still glows. jet up like offroadace was saying that should help but i think they always glow from what i have read in the past.

andy

 

[batterup450]

Its Pretty normal because the walls of the header are so thin and i took mine off to see how thin it really is. take a look for yourself and you will find out why too.

 

[03'z400]

the dealersip told me it was normal...as we were loading into my truck the guy says..."wear pants the pipe gets red hot"

 

[batterup450]

Originally posted by 03'z400@Jan 5 2004, 04:41 PM
the dealersip told me it was normal...as we were loading into my truck the guy says..."wear pants the pipe gets red hot"

definately wear pants

 

[04flamedyfz]

thanx guys didn't want to blow it up. i will jet it up some should i do anything to the needle?

 

[Cron]

If you are glowing Red then that means your quad is too lean and you could do engine damage. Glowing orange is what the quads should glow. I am pretty sure though if you are glowing red that is too lean...anyone else want to back this up or am I wrong? If it is seriously red then you need to re jet.

 

[yfz450 kid]

My two YFZ450's headers glow , my friends YFZ's glow, as does my neighbors YFZ's.

It's normal, it's OK.

 

[Cron]

Originally posted by yfz450 kid@Jan 5 2004, 11:49 PM
My two YFZ450's headers glow , my friends YFZ's glow, as does my neighbors YFZ's.

It's normal, it's OK.

Glowing is normal, as long as it is glowing Red. Glowing orange is norma,l not red, red is too lean.

 

[jarsong]

Originally posted by YFZ@Jan 5 2004, 08:45 PM
If you are glowing Red then that means your quad is too lean and you could do engine damage. Glowing orange is what the quads should glow. I am pretty sure though if you are glowing red that is too lean...anyone else want to back this up or am I wrong? If it is seriously red then you need to re jet.

GLowing on this engine is normal. Pipe wall thickness is to blame. Mine glowed when it was so rich I could smell gas out the tailpipe.
jarsong

 

[blue4fiddy]

Its quite normal. My Hayabusa has a Titanium system and at night rollin slow it does the same thing.
There is quite the amount of heat from the internal combustion engine.
Theres firrre in that there hose pipe mister.