Prima Exhaust Discoloration

SCOOTER SOLDIER · Post by **SCOOTER SOLDIER** » Tue Aug 28, 2007 2:05 am

My Prima exhaust has changed color, it is a copper color from the cylinder head back to the muffler, has anyone else with the prima exhaust experienced the same thing?

StL_Stadtroller · Post by **StL_Stadtroller** » Tue Aug 28, 2007 3:05 am

chrome discolors from the heat. It's just what happens.

Check out any motorocycle with single-walled header pipes and you'll see the gold to blue coloring at the hot spots.

Post by **ericalm** » Tue Aug 28, 2007 3:40 am

I've seen pics of performance exhausts (not on Buddys, yet) literally glowing from heat. Whee.

iamryan2 · Post by **iamryan2** » Tue Aug 28, 2007 3:48 am

It's supposed to do that, thats the fun part, eventually you could even see some purple.

jetboy · Post by **jetboy** » Tue Aug 28, 2007 2:42 pm

This is a particular vexation amongst Triumph owners as well. Googling "exhaust pipe bluing" turns up a variety of issues and products. Check out the Web Bike World reviews different products marketed to remove it: http://www.webbikeworld.com/motorcycle-exhaust-systems/

-jetboy

Leeroy Jenkins · Post by **Leeroy Jenkins** » Tue Aug 28, 2007 3:50 pm

stainless steel will change colors thats normal. I dont know what ur pipe is made of.

generally a "Blue" color says the bike is not tuned corectly. It might way off, may be a little off. Genreally running lean will "blue" a pipe or cause it to get red hot. running lean on air cooled bike is not good.

did you ret jet ur bike after pipe install?

old drag racers trick:
Make a long pipe, run pipe a few times. Look for the blueing near the end. cut off pipe @ first blueing area. Tuned pipe.

twharton · Post by **twharton** » Tue Aug 28, 2007 5:08 pm

generally a "Blue" color says the bike is not tuned corectly.

Could you please provide some kind of backup reference information?

Thanks.

StL_Stadtroller · Post by **StL_Stadtroller** » Tue Aug 28, 2007 7:20 pm

Leeroy Jenkins wrote: generally a "Blue" color says the bike is not tuned corectly. It might way off, may be a little off. Genreally running lean will "blue" a pipe or cause it to get red hot. running lean on air cooled bike is not good.

I disagree. not with the lean-running being harmfull part, that's a given - with the blue means poor tuning part.

Heat is just going to cause the chrome to blue over time. Sure, the hotter it is, the quicker it's going to blue, but eventually it's gonna happen.
The pipes on my BMW, Ural, and Enfield all blued, and they were all kept in top tune. And yeah, bikers everywhere bemoan the "blueing" of the pipes, but I always just considered it the mark of a bike that is actually RIDDEN, and not something only taken out on sunny weekends and rubbed with diapers

Many high-$, fancy "blingy" bikes these days (Harley, Victory, Harley-style Hondas, etc) come with double-walled chrome headers which simply hide the blueing underneath a cosmetic wall. Now, if you were running so hot that even THAT blued, then hell yeah, you may have a problem there.

But in the case of a simple, single-walled chrome header pipe it's just gonna blue eventually.

Caution: Hot exhaust gasses are hot!

twharton · Post by **twharton** » Tue Aug 28, 2007 11:07 pm

StL_Stadtroller

Yeah what he said. Major PROPS

TOM