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Reducati
Posted on Thursday, September 30, 2004 - 09:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

i have had my buell firebolt 12xbr for about a month but noticed something really wild last nite. after a 60 minute ride, i pulled into the garage, it was nite and i didnt turn on the garage light. the header pipe from the front was completely red hot, i mean glowing. never seen like this before. normal?
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Glitch
Posted on Thursday, September 30, 2004 - 09:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I've not seen anything like that either.
I have a nine though.
Are you done with break in?
If so, you may want to take it in and have it checked to be sure the AFV is correct.
Lean = Hot
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1320
Posted on Thursday, September 30, 2004 - 10:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

This happened to me on initial start up after doing some internal mods...I hadn't set the timing correctly..
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Reepicheep
Posted on Thursday, September 30, 2004 - 01:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It happened to me on my Cyclone after removing the headers, and putting them back on with a new gasket. Left it idling in the driveway for a little while at night, and when I went back over to pull it in the garage I saw a red glow from the headers where they joined the engine. Scared the crap out of me.

I don't know if there was a short duration exhaust leak due to the exhaust seals sealing, or if it was all the penetrating oil that was all over the area, or what.

I am not sure they don't glow after a hard run normally...
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Gowindward
Posted on Thursday, September 30, 2004 - 03:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Here's a temperature / color table for steel. These are for day light conditions. I think what you are seeing is not out of line for dark / no light conditions. The tops of the headers are blue which putts them in the 500 to 600 degree range for day light.

2000F Bright yellow
1900F Dark yellow
1800F Orange yellow
1700F Orange
1600F Orange red
1500F Bright red
1400F Red
1300F Medium red
1200F Dull red
1100F Slight red
1000F Very slight red, mostly grey
800F Dark grey
575F Blue
540F Dark Purple
520F Purple
500F Brown/Purple
480F Brown
465F Dark Straw
445F Light Straw
390F Faint Straw
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Spike
Posted on Thursday, September 30, 2004 - 08:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I've seen my XB12R header turn a slight red. I was letting the bike warm up one night in a dark parking lot and ended up getting stuck on the phone for a while with the bike still idling. The bike had been idling for upwards of 10 minutes before I noticed the header had a slight glow to it. It's not something I would have noticed in the daylight, or even in a well lit parking lot. The bike was bone stock at the time.

Mike L.
'04 XB12R
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Reducati
Posted on Thursday, September 30, 2004 - 10:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

the glow is only noticed in a dark, almost pitch black garage, it the city lights not noticed. my question is if it is running lean, what needs to be adjusted, and what differences will i notice. thanks, dan
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Lightning_strikes_now
Posted on Thursday, September 30, 2004 - 10:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

One thing that you have to remember is that the combustion gases are around 2800 degress F. When the exhaust valve opens, the gases are still burning and hot. So the pipe will glow. When I was in engineering school, we went to an automotive lab to observe a Ford in line six cylinder engine run on a dyno. When the throttle was openned up for the engine to run at about 5000 rpm, the manifold and exhaust pipe got red hot almost immediately. Air cooled engines can't regulate their heat, and when they are pushed hard at high revs, they will get really hot and will eventually lose power. This is why water cooled engines are superior in performance.
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Fullpower
Posted on Friday, October 01, 2004 - 08:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

reduc, dont worry about it, you can not adjust the idle mixture.
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Xbolt12
Posted on Friday, October 01, 2004 - 09:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My yamaha YZ400F does the same thing. That is why both the Buell and the Yamaha will burn through plastic (velcro knee puck area or moto-cross pants) in a heartbeat.

You just don't see it unless it is very dark outside.


xbolt12
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Bubabuell
Posted on Friday, October 01, 2004 - 10:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Could be you're running lean as well. A lean mix will cause a motor to run quite hot.
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