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Oct 21st, 2006, 01:57 PM
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#1 | | Has posted 500+
Join Date: Sep 2006 Location: I'm everywhere, I'm everywhere
Posts: 1,092 Model: 06 flhxi Interests: family,fun, fast chrome Occupation: causing hate and discontent
| hot pipes
heres a ? for y'all. I ran my scooter in to the shop today, and not that i am the most observant individual in the world but I backed it in to the corner walked over to the light switch off go the lights and at about 55- 60 ft I am seein a glow from my bike althogh It will usually git the first 4-6 inches red this sucker was glowing to allmost transparent about 12-14 inches down the pipe. it's a 06 flhxi just wondering if it is just the efi or is it that I am not that obsrevant. | 
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Oct 21st, 2006, 04:33 PM
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#2 | | 200+ posts and climbing
Join Date: Dec 2005 Location: Ohio....Brrrrr
Posts: 309 Interests: Easily amused by two wheels or two tits...whichever... Occupation: Military Police
| Great...now I'm gonna be backing MY bike into a dark corner, pipes facing the inside of the garage..tomorrow, and flipping the light off to see if MINE glow too. Thanks alot, man, thanks alot.... 
scoot
__________________ "Come and take them" -Leonidas  USAF SP-SOTMTC-AFSPA-XL1200C | 
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Oct 21st, 2006, 05:10 PM
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#3 | | More than 100 posts!
Join Date: Jul 2004
Posts: 111
| The new bikes are running Lean to meet EPA crap. Pull a spark plug & I'll bet you it is snow white. Contact Sam here at Directparts & he will set you up with something to put some fuel in it. It will run better & also stop cooking your seat as well as those pipes.
Regards,
Cracker | |
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Oct 23rd, 2006, 09:30 AM
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#4 | | Has posted 500+
Join Date: Jun 2004
Posts: 3,102
| You must not be running the new HD Syn-Air in the bike. This new product reduces the friction caused by the non syn air and keeps the exhaust cooler,
You could have a clogged muffler bearing that would heat up the headers if the exisiting hot gasses are not allowed to pass freely.
LOL
Ok probably lean, I watched one glow red on a dyno being tuned at Carls, it was a friends bike he freaked! Never realized how hot that stuff gets coming out , especially the rear header as it doesn't get the cool airflow the front does.
A DFO or Powercommander to richen up the fuel mix will help to some extent.
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Oct 23rd, 2006, 01:20 PM
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#5 | | Very Active Poster 50+
Join Date: Sep 2006 Location: Titusville FL
Posts: 83 Model: 95 FLHT Interests: Motorcycle riding Occupation: Carpet Installer
| Quote:
Originally Posted by ironhorse  heres a ? for y'all. I ran my scooter in to the shop today, and not that i am the most observant individual in the world but I backed it in to the corner walked over to the light switch off go the lights and at about 55- 60 ft I am seein a glow from my bike althogh It will usually git the first 4-6 inches red this sucker was glowing to allmost transparent about 12-14 inches down the pipe. it's a 06 flhxi just wondering if it is just the efi or is it that I am not that obsrevant. | Sounds like to me its bruning a little lean
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Oct 23rd, 2006, 06:59 PM
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#6 | | Has posted 500+
Join Date: Sep 2006 Location: I'm everywhere, I'm everywhere
Posts: 1,092 Model: 06 flhxi Interests: family,fun, fast chrome Occupation: causing hate and discontent
|  muffler bearing
hrk cheacked the muffler bearing and changed to syn air, but I believe I'm with the rest...the efi belt is to tight causing high static discharge resulting in muffler bearing stall. pretty sure the syn air cant hurt though | |
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Oct 23rd, 2006, 07:04 PM
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#7 | | 200+ posts and climbing
Join Date: Sep 2006 Location: Phoenix, AZ
Posts: 239 Model: 1995 H-D XLH 883 Interests: Shooting, hunting, bike riding Occupation: Retired
| Quote:
Originally Posted by ironhorse hrk cheacked the muffler bearing and changed to syn air, but I believe I'm with the rest...the efi belt is to tight causing high static discharge resulting in muffler bearing stall. pretty sure the syn air cant hurt though | Is a mufler bearing as bad as a misaligned Johnson Rod? You guys really got me concerned now. 
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-AZroaddust- | |
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Oct 24th, 2006, 03:47 AM
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#8 | | Moderator Has posted 500+
Join Date: Jun 2004 Location: San Antonio, TX
Posts: 1,423 Model: 2004 E Glide Standard, Stage 1. Interests: Riding, fishing, hunting, camping, spending time with wife and daughter Occupation: Air Force Nurse
| Just wait till you get to the headlamp repair kit....the instructions for the filiment change are a bit vague..... 
__________________  "The purpose of Life's journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting "...holy Sh*t...what a ride!" | |
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Oct 24th, 2006, 06:23 AM
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#9 | | 200+ posts and climbing
Join Date: Sep 2006 Location: Phoenix, AZ
Posts: 239 Model: 1995 H-D XLH 883 Interests: Shooting, hunting, bike riding Occupation: Retired
| Quote:
Originally Posted by AFNurse Just wait till you get to the headlamp repair kit....the instructions for the filiment change are a bit vague..... | Just cause I'm the new kid on the block does't mean I fell off the turnip trunk bucko!
I was forwarned about changing filiments so this nce guy sold me a Krypton bulb that will never burn out and is gauranteed for 6 life times. It was ony $250.00.
I'm still getting used to the bright green light at night and I've noticed a marked decrease in strength after night riding, but I'm sure I'll get used to it.
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-AZroaddust- | |
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Oct 24th, 2006, 03:46 PM
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#10 | | Has posted 500+
Join Date: Aug 2004 Location: So. Cal.
Posts: 613 Model: 98 FLHRCI Interests: Riding and working on HD. Riding to Sturgis as often as I can. Occupation: Project Mangement
| Quote:
Originally Posted by AZroaddust Is a mufler bearing as bad as a misaligned Johnson Rod? You guys really got me concerned now. | I thought if you used a mufler bearing that's what can give you a misaligned johnson rod 
And there's no cure. | |
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Oct 24th, 2006, 03:52 PM
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#11 | | Has posted 500+
Join Date: Aug 2004 Location: So. Cal.
Posts: 613 Model: 98 FLHRCI Interests: Riding and working on HD. Riding to Sturgis as often as I can. Occupation: Project Mangement
| Let's debate this point - too lean?
Quote:
Originally Posted by Cracker The new bikes are running Lean to meet EPA crap. Pull a spark plug & I'll bet you it is snow white. Contact Sam here at Directparts & he will set you up with something to put some fuel in it. It will run better & also stop cooking your seat as well as those pipes.
Regards,
Cracker | If the engine is lean why is the pipe hot I would think that if you have a hot spot (glow) in your pipes it is one of the following reasons.
1. Unburned fuel (now burning in the pipes) - too rich.
2. Unburned fuel (now burning in the pipes) - spark timing too late.
3. Hot spot (glowing) on the outside of a bend in the pipes - normal
4. Pipe hot (glowing) all the way down at WOT - normal, unless is starts to melt.
Anybody? | |
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Oct 25th, 2006, 11:50 AM
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#12 | | More than 100 posts!
Join Date: Jul 2004
Posts: 111
| Question from Tomflhrci98
If the engine is lean why is the pipe hot I would think that if you have a hot spot (glow) in your pipes it is one of the following reasons.
1. Unburned fuel (now burning in the pipes) - too rich.
2. Unburned fuel (now burning in the pipes) - spark timing too late.
3. Hot spot (glowing) on the outside of a bend in the pipes - normal
4. Pipe hot (glowing) all the way down at WOT - normal, unless is starts to melt.
Anybody?
Answer Air/Fuel Ratio (AFR)
Higher AFR values correspond to a leaner (less fuel) condition. The practical operating range for most engines using gasoline fuel is from approximately 11.5 to 14.7 AFR. Combustion of a stoichiometric mixture (exactly enough air to burn all the fuel) results in 14.7 AFR indication. Automotive engines with catalytic converters operate near 14.7 AFR during cruise and idle. Air-cooled motorcycle and automotive race engines require a richer mixture to limit cylinder head temperature and prevent detonation. The table below lists recommended AFR values for engines without emission controls.
More info here > http://www.daytona-sensors.com/tech_tuning.html
Hope that helps,
Cracker | |
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Oct 25th, 2006, 03:42 PM
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#13 | | Has posted 500+
Join Date: Aug 2004 Location: So. Cal.
Posts: 613 Model: 98 FLHRCI Interests: Riding and working on HD. Riding to Sturgis as often as I can. Occupation: Project Mangement
| Quote:
Originally Posted by Cracker Higher AFR values correspond to a leaner (less fuel) condition. The practical operating range for most engines using gasoline fuel is from approximately 11.5 to 14.7 AFR. Combustion of a stoichiometric mixture (exactly enough air to burn all the fuel) results in 14.7 AFR | Cracker,
That’s exactly my point. 14.7 to 1 AFR is the optimal ratio for efficiency and also happens to be the best point for emissions. Granted that there is a lot more involved for good emissions, but, it is wrong to think that running lean is the only way to get good emissions output. In fact, running lean causes 2 problems; one, higher NOx (NOx bad) and two, running lean can cause misfires that will then cause other bad emissions issues.
So getting back to the original issue in this thread about glowing pipes. My experience tells me that glowing pipes are from burning fuel in the pipes. This is caused by; too rich AFR below 14.7 to 1 and/or late spark timing.
Nice link by the way. Good info.
T. | |
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Oct 25th, 2006, 04:03 PM
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#14 | | More than 100 posts!
Join Date: Jul 2004
Posts: 111
| I surrender  | |
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Oct 25th, 2006, 07:40 PM
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#15 | | Has posted 500+
Join Date: Jan 2005
Posts: 841 Interests: Bikes, Boobs and Beer Occupation: Biker
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Oct 25th, 2006, 07:58 PM
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#16 | | Has posted 500+
Join Date: Sep 2006 Location: I'm everywhere, I'm everywhere
Posts: 1,092 Model: 06 flhxi Interests: family,fun, fast chrome Occupation: causing hate and discontent
| yea ,yea I could look it up but what the hedouble hockey stix is LMAO, 4Idnk
__________________ ain't no feelin like harleymobilin
remember first throttle then bottle, life will stay fun in that order
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Oct 25th, 2006, 08:05 PM
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#17 | | Has posted 500+
Join Date: Sep 2006 Location: I'm everywhere, I'm everywhere
Posts: 1,092 Model: 06 flhxi Interests: family,fun, fast chrome Occupation: causing hate and discontent
| I LMAO when I figured it out
__________________ ain't no feelin like harleymobilin
remember first throttle then bottle, life will stay fun in that order
3.9% of women in survey don't wear underwear. | |
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