Glowing red mufflers - Wrist Twisters
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post #1 of 25 Old 05-18-2019, 06:08 PM Thread Starter
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Glowing red mufflers

What would cause my mufflers to be glowing red hot on the inside after a hour of riding at about 65-70 mph.
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post #2 of 25 Old 05-18-2019, 07:20 PM
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Heat
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post #3 of 25 Old 05-18-2019, 09:31 PM
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My first thought is timing, but I don't know how you can alter the timing on these.

So my 2nd guess would be burned exhaust valves.

I'd buy the HF leak down tester and run a test to see if the valve are really sealing. You might be able to tell with a compression test, but the leak down tester is about the same price as a compression tester.

My 3rd guess would be a plug that isn't firing and causing raw gas to get into the exhaust where it's ignited by the heat/fire of the others. So if cyl 3 isn't firing, the fuel enters the header and you now have fire in the exhaust.

You can check with a clip on timing light, going from one cyl to another to see if you have fire to the plugs.

You can also check the temp at the header and compare each pipe.

My last guess would be rich backfire, but you should be able to hear that and it would be quite a bit I would guess.

I assume the exhaust isn't wrapped.

If you have a PCIII module, that could be a factor, but I have no idea what params the PCIII has.

Did you do a baffle mod or any other mod?

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post #4 of 25 Old 05-18-2019, 09:36 PM
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What would cause my mufflers to be glowing red hot on the inside after a hour of riding at about 65-70 mph.
A broken speedometer...........
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post #5 of 25 Old 05-18-2019, 10:45 PM
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Carbon deposits. Ride it harder.

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post #6 of 25 Old 05-19-2019, 05:21 AM Thread Starter
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I have put a k&n air filter in it but that is the only thing that I have done. I does do alittle bit of back firing around 5250 rpms

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post #7 of 25 Old 05-19-2019, 07:55 AM
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The header pipes on the Super Duke glow red at night.

And before you guys say it running lean, this or that, it was Dyno tuned by Chad at Commonwealth in Louisville. Let me assure you, it runs great.

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post #8 of 25 Old 05-19-2019, 08:21 AM
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I'd look into a propane injection system if they can't be seen from space...

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post #9 of 25 Old 05-19-2019, 08:23 AM
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Lemme know if you determine the cause... I wanna do the mod
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post #10 of 25 Old 05-19-2019, 08:32 AM
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Quote:
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What would cause my mufflers to be glowing red hot on the inside after a hour of riding at about 65-70 mph.
A broken speedometer...........
LMFAO

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post #11 of 25 Old 05-19-2019, 08:34 AM
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The WT comedy tour...lolz
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post #12 of 25 Old 05-19-2019, 09:27 AM
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Is it normal?
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post #13 of 25 Old 05-19-2019, 05:04 PM
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All hot objects emit radiation at every wavelength, including infrared radiation.

Digital cameras are typically made from silicon CCD’s, which can detect light from the visible out to the near end of the infrared. The IR light does not focus as well, so it is usually blocked by a special filter so that it never reaches the CCD chip. This helps improve the camera’s picture quality. Generally, the cheaper the camera is, the more IR light the camera can pick up.

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post #14 of 25 Old 05-19-2019, 05:37 PM
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Quote:
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All hot objects emit radiation at every wavelength, including infrared radiation.

Digital cameras are typically made from silicon CCD’s, which can detect light from the visible out to the near end of the infrared. The IR light does not focus as well, so it is usually blocked by a special filter so that it never reaches the CCD chip. This helps improve the camera’s picture quality. Generally, the cheaper the camera is, the more IR light the camera can pick up.
Cool. I didn't know that. You can learn something new every day.
What if... he saw the glow with his eyeballs first before taking the pic. I can honestly say I've never seen my mufflers glow. Headers on some bikes but never the muffler. I'm assuming they are stock cans. Highly baffled which retains the hot exhaust gases longer. More internals to retain heat.
Maybe a build up of carbon?
What about failed FPR dumping excess fuel. That could build up in a stock can.
Maybe it's normal. I don't ever remember checking out my bike in the dark with stock cans on. My aftermarket ones don't glow. I tried!

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post #15 of 25 Old 05-20-2019, 09:05 AM
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If the metal inside the cans were truly glowing orange, I'd expect the header pipes to have first been a puddle upon the floor.
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post #16 of 25 Old 05-20-2019, 06:00 PM
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they really need to sell a Halo type LED set up for the exhaust that mimics the red glow......

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post #17 of 25 Old 05-20-2019, 06:14 PM
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they really need to sell a Halo type LED set up for the exhaust that

the red glow......
Yeah, or green or sumthin..

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post #18 of 25 Old 05-20-2019, 06:30 PM
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You guys need help...
Look at this on eBay http://www.ebay.com.au/itm/202651104575

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post #19 of 25 Old 05-20-2019, 08:49 PM
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Intelligent explanation...... what a buzz kill.

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post #20 of 25 Old 05-23-2019, 03:01 PM
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You guys need help...
Look at this on eBay http://www.ebay.com.au/itm/202651104575
Did you see the Nazi Swastika light adapter advertised just below?
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post #21 of 25 Old 05-23-2019, 03:11 PM Thread Starter
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The timing was off and valves weren't adjusted right. So I was running on 2 cylinders and the other 2 were being washed and the had went into the exhaust and burned up in it.

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post #22 of 25 Old 05-23-2019, 03:39 PM
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Quote:
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Quote:
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You guys need help...
Look at this on eBay http://www.ebay.com.au/itm/202651104575
Did you see the Nazi Swastika light adapter advertised just below?
Haha... like I said you guys need help.
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post #23 of 25 Old 05-23-2019, 03:43 PM
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The timing was off and valves weren't adjusted right. So I was running on 2 cylinders and the other 2 were being washed and the had went into the exhaust and burned up in it.
Glad you got it sorted.
Which two cylinders was it getting excess fuel? I only ask cause it sounds a lot like a failed FPR. Which would dump excess fuel into cylinders 2 and 3. Just a thought.
Thanks for letting us all know the outcome.

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post #24 of 25 Old 05-23-2019, 04:06 PM
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Quote:
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Quote:
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You guys need help...
Look at this on eBay http://www.ebay.com.au/itm/202651104575
Did you see the Nazi Swastika light adapter advertised just below?
Link?

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post #25 of 25 Old 05-23-2019, 04:13 PM
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https://www.ebay.com/itm/Adjustable-....c100008.m2219

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