Rear Pipe glowing just a little - Page 3 - Harley Davidson Forums: Harley Davidson Motorcycle Forum
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post #21 of 25 (permalink) Old 11-13-2012, 05:33 AM Thread Starter
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[quote=gguerra988;657585]
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Originally Posted by Nathang View Post
I have never seen mine glowing from running hard.

I believe it is a cold-start enrichment w/fast idle and/or ignition retard feature.


Nathang, I can understand it from a clold start but I am seeing it from rides I take like after 30 min or so, I think you should take a close look at your rear head pipe when it really dark and make sure to look behind the heat shield too. let me know if yours glow a Dull orange...


Last edited by gguerra988; 11-13-2012 at 12:55 PM.
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post #22 of 25 (permalink) Old 12-03-2012, 06:11 PM
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If your lighter takes a crap you can light up your BLUNT on it , But , It does leave a mess on the exhaust pipe, if it isn't hot enough.. stuff sticks ..
I have seen it done .
I have never , " not many times ", ever done it ...
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post #23 of 25 (permalink) Old 12-03-2012, 06:34 PM Thread Starter
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Originally Posted by GG686 View Post
If your lighter takes a crap you can light up your BLUNT on it , But , It does leave a mess on the exhaust pipe, if it isn't hot enough.. stuff sticks ..
I have seen it done .
I have never , " not many times ", ever done it ...
GG686, You must me one of those imature idiots, if you do not have any real advise then dont give any at all.....Real men join these threads and imature boys like you just read and learn how to respond for the next time.
and i dont smoke blunts my friend or anything in that nature, and if i did i will keep it to myself.

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post #24 of 25 (permalink) Old 12-04-2012, 03:01 AM
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Dear gguerr 988
I will continue to be an immature idiot ,
And you can continue being a smoke nazi ,
Thats what makes the wheels go round in this big beautiful world!
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post #25 of 25 (permalink) Old 12-04-2012, 03:37 AM
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One of the reasons the exhaust glows is because of the very late opening exhaust valves on the stock cams in conjunction with the lean EPA mandated mixtures. The EPA wants to hold all that exhaust in there to make sure every last molecule of fuel is burned and no unburned fuel from the intake charge comes out. When it finally does open the resulting exhaust is VERY hot, and yes, your pipes can glow, probably a dull red. One of the benefits of an aftermarket cam is the increased overlap, which, among other things, cools the exhaust area of the head and header pipe by letting the exhaust out earlier.
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