This may ne a stupid question, but... - Kawasaki KLR 650 Forum
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post #1 of 21 Old 07-10-2018, 01:29 AM Thread Starter
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This may ne a stupid question, but...

First let me preface this by saying this is a brand new 2018 model and the bike seems to run fine. Last night after work it was dark when I got home. I got off the bike and as it was idling I noticed the exhaust head pipe was absolutely RED HOT. I have never had any motorcycle in 40+ yrs of riding motorcycle have the pipes glow red hot after riding less than 2 miles.. Or 200 miles for that matter. What would be the cause of this? Are the head pipes that thin and do these bikes run that frigging hot to turn them red hot like they've been heated by a torch?? Is this something to be concerned about? Makes me wonder about the aluminum in the head and whether it will last.
If you would , please ride your bikes and then stop in a dark area and look at your header pipe. Does yours also glow red hot?
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post #2 of 21 Old 07-10-2018, 07:53 AM
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Wow, nope, I've never seen that in my 40+ years either and I've owned harleys that get hot as hades. These bikes are running lean out the door but.. Seems like there would be a lot of popping too. The pipes do look pretty thin to me though. I've only owned mine for about three months so will be interesting to hear what others say.
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post #3 of 21 Old 07-10-2018, 08:37 AM
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The choke wasn't on, was it?

"It sure beats working all week, boozing it up in some smoky bar or sitting around watching the world go to Hell in living color and still ending up, just before payday, flat broke as usual. That's only existing, not really living." - Don Marshall, Cycles South, 1971
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post #4 of 21 Old 07-10-2018, 09:06 AM
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Choke would make it run cooler unless of course the aforementioned popping being the uncombusted petro igniting in the pipe.
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post #5 of 21 Old 07-10-2018, 10:44 AM
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Relax, it's normal.


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post #6 of 21 Old 07-10-2018, 10:46 AM
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Lean jetting, AIS system, thin header = red pipes at night.....hey, isn't there a nursery rhyme?....."red pipes at night, riders take warning?"...no? :-)

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post #7 of 21 Old 07-10-2018, 11:43 AM
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Originally Posted by DPelletier View Post
Lean jetting, AIS system, thin header = red pipes at night.....hey, isn't there a nursery rhyme?....."red pipes at night, riders take warning?"...no? :-)

Dave
I may have to go for a spin tonight and see this. You know in three months, in 95 plus heat, in traffic, I have yet to hear my fan turn on. I have yet to get anywhere near the red mark.
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post #8 of 21 Old 07-10-2018, 11:54 AM
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I wouldnít be surprised with a glowing pipe as lean as these are set from factory.
I canít check my Ď16 since Iíve already richened it with mods.

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post #9 of 21 Old 07-10-2018, 02:28 PM
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Quote:
Originally Posted by PaddyD View Post
First let me preface this by saying this is a brand new 2018 model and the bike seems to run fine. Last night after work it was dark when I got home. I got off the bike and as it was idling I noticed the exhaust head pipe was absolutely RED HOT. I have never had any motorcycle in 40+ yrs of riding motorcycle have the pipes glow red hot after riding less than 2 miles.. Or 200 miles for that matter. What would be the cause of this? Are the head pipes that thin and do these bikes run that frigging hot to turn them red hot like they've been heated by a torch?? Is this something to be concerned about? Makes me wonder about the aluminum in the head and whether it will last.
If you would , please ride your bikes and then stop in a dark area and look at your header pipe. Does yours also glow red hot?
Relax, it can be normal (dull red). Like Dave said. And it may require some further explanation.

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Originally Posted by patroy75 View Post
Choke would make it run cooler unless of course the aforementioned popping being the uncombusted petro igniting in the pipe.
If the cold start enrichner (choke) lever is left part way on, the Air Injection System (AIS) will cause the overly rich mixture to finish burning in the header pipe (Bright Red).

The Titanium Header Pipes on the lightweight sport bikes & Motocrossers will be bright red in the day time, even without an AIS.
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post #10 of 21 Old 07-10-2018, 02:43 PM Thread Starter
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Originally Posted by pdwestman View Post
Relax, it can be normal (dull red). Like Dave said. And it may require some further explanation.



If the cold start enrichner (choke) lever is left part way on, the Air Injection System (AIS) will cause the overly rich mixture to finish burning in the header pipe (Bright Red).

The Titanium Header Pipes on the lightweight sport bikes & Motocrossers will be bright red in the day time, even without an AIS.
This was a bright red. Bright enough to be called alarmingly bright red. The enrichener wasn't left on as I always turn it off as soon as it will run on it's own. So, it is possible that it may be partially stuck open? If so, how would I be able to tell and how is it adjusted? I'd buy a Clymers, but they say they don't have one for the 2018 model and have no plans of publishing on in the near future.
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