[hmf pipe purple] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs
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hmf pipe purple

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Posted by: Xater

my hmf pipe turned purple near the port is this normal or a jetting issue?


Posted by: yfzrider73

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


Posted by: pro-rider46

what size jets u running?


Posted by: Xater

quote:
Originally posted by pro-rider46
what size jets u running?

45 pilot, 172 main, stock needle. its running great.


Posted by: pro-rider46

that jetting seems to be good


Posted by: Ant440ex

That is usually caused by thin wall headers. That is how aftermarket companies save the weight compared to OEM is by using thiner tubing.




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