300 running hot.....

[2K1 300EX]

I just put in a 135 main jet for it because it was running way too lean(to the point i could crank it and rev it up 2 or 3 times and the exhuast would burn a piece f paper), well it is still running lean I think but the plug isn't too bad. But my header pipe is changing colors and now half my header pipe is a bluish/purplish/brownish color. I talked to somebody about the pipe chaning colors adnhe said that it's just from heat and any pipe will do that, but I don't think it is normal for it to change colors on almost the hole header pipe. So is this normal? Too lean? Too rich? Any advice will help.

[toby400ex]

my head pipe tirns purple and i am running to rich
so maybe it dont make a darn difference

[phatswinn]

nope it dosent matter, just from the heat, dont woryabout it, just look at the plug

[2K1 300EX]

Is there anyway to clean it back up to where it will shine again? Or is it becaus eit is stainless steel it get too hot? Thanks.

[toby400ex]

are you talking about making your fmf high flow header shiny, if you are steel wool and a can of wd40 will make it chiny after a few minutes of scrubbing

[2K1 300EX]

Even if stained that brownish color from the heat? I have tried everything to make it shine. So if I want it to shine I am gonna have to clean it after every ride?

[2K1 300EX]

Is it because my pipe is stainless steel(gets hotter than regular steel)that it is changing colors? Is this common on all pipes? Is there any pipes that don't change color from too much heat?