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View Full Version : hmf pipe purple


Xater
08-03-2007, 05:59 PM
my hmf pipe turned purple near the port is this normal or a jetting issue?
yfzrider73
08-03-2007, 07:10 PM
I have a LRD on mine and it was purple and glowing red hot so i changed my jeting and it is still purple but it does not glow red any more
pro-rider46
08-03-2007, 07:41 PM
what size jets u running?
Xater
08-04-2007, 07:58 AM
Originally posted by pro-rider46
what size jets u running?
45 pilot, 172 main, stock needle. its running great.
pro-rider46
08-04-2007, 10:39 AM
that jetting seems to be good
Ant440ex
08-04-2007, 12:11 PM
That is usually caused by thin wall headers. That is how aftermarket companies save the weight compared to OEM is by using thiner tubing.