2005 exhaust pipes glowing red

[QED113]

Bought 2 mnths ago. No problems, Isle of lewis and back. Cleaned down and acf50 covered, though not excessive at all. running on centre stand I held the engine when started at around 3k rpm for 30 secs and the down pipes glowed red. This is caused by what exactly ?? never ever seen this before in 30 yrs experience.

 

[Ian J Hartley]

running on centre stand I held the engine when started at around 3k rpm for 30 secs and the down pipes glowed red. This is caused by what exactly ?? never ever seen this before in 30 yrs experience.

Hot exhaust gasses from the engine.
What do you expect?
They will all do that if you rev the engine with no airflow over the bike.

 

[mspenz]

That's the product of internal combustion that is....

 

[QED113]

ok guys , I think I got the gist about the internal comb engine and all that. Never ever seen pipes do that before though.

 

[oblertone]

ok guys , I think I got the gist about the internal comb engine and all that. Never ever seen pipes do that before though.

Probably because you're used to double skin pipes as found on most jap bikes; BMW use single skin and it's really not a good idea to run it on the stand for any length of time because there is no cooling effect from the passage of air. In extreme cases the heat generated has melted the fuel lines causing fires.

ps RTFM

 

[MattW]

Normal behaviour if you do something as ill-advised as holding an air-cooled engine on its stand at 3k for 30 seconds. As above, the heat build up without any airflow is huge - you *will* break something if you try that too often. It'll also cook your oil and can cause the plastic sight glass to melt and fall out.

 

[duckspeed]

Every time I trapped my thumb in the door if really hurt, so I stopped doing it !



Sent using witchcraft

 

[Wapping]

Your exhaust pipe headers are now nine years old.

They are worn out.

Replace.

 

[Steptoe]

They may give the appearance of being hot but they aren't really. Grip the pipe with your hand, see luke warm to the touch..

 

[Wrigsby1]

Probably because you're used to double skin pipes as found on most jap bikes; BMW use single skin and it's really not a good idea to run it on the stand for any length of time because there is no cooling effect from the passage of air. In extreme cases the heat generated has melted the fuel lines causing fires.

ps RTFM

Yip, the same as if you feck about for too long when balancing things... BMW do not warn of overheating for nothing...

 

[Duncan]

One of my Dubai based colleagues has just had to order an entire replacement engine after leaving his one year old 1200 running on it's stand in the heat.. it only had a thousand miles on it :-(

 

[MikeO]

They may give the appearance of being hot but they aren't really. Grip the pipe with your hand, see luke warm to the touch..

 

[earthmover]

They may give the appearance of being hot but they aren't really. Grip the pipe with your hand, see luke warm to the touch..

You Sir, are a very bad man.
Mark

 

[QED113]

They may give the appearance of being hot but they aren't really. Grip the pipe with your hand, see luke warm to the touch..

Just tried it several times and your correct, so why are they glowing ?











ok folks..point taken....lol

 

[oblertone]

Just tried it several times and your correct, so why are they glowing ?

Same reason as this one

 

[hops]

Just tried it several times and your correct, so why are they glowing ?

ok folks..point taken....lol

Don't be put off asking fuckin silly questions Robbie, you can bet others have thought it, if not asked it at some point. We've all been there & some of our brethren do give short shrift for what should be perhaps an obvious answer. But you'll invariably find the ones that rip the piss out of you have the most to offer when the brown stuff really hits the fan!

 

[QED113]

Don't be put off asking fuckin silly questions Robbie, you can bet others have thought it, if not asked it at some point. We've all been there & some of our brethren do give short shrift for what should be perhaps an obvious answer. But you'll invariably find the ones that rip the piss out of you have the most to offer when the brown stuff really hits the fan!

Its cool hops, and thanks everyone for the replies.

 

[Swesty]

My old Cortina 1.6 did it when the timing belt jumped a tooth or two.