Glowing pipes

-Savage- · World Chat Champion Joined: 10 Jun 2005 Karma :

Im not too sure if this is normal, but it just came to mind and i thaught i might as well ask.

When i have me fairing off and the engine running, if i rev her away, and leave it running for a while, when i open the throtle, the manifold pipes glow bright red, its kinda offputting incase they melt or something? is this normal ?
____________________
My Bikes - - - Royal Enfield 500 with sidecar, VFR800, CBR600FX,
Peugeot Speedfight 100, Kymco Hipster 125, GSXR750K5, Jawa TS 350

Jebus · Brolly Dolly Joined: 10 Jul 2004 Karma :

well yes they will glow, and they dont have a load of air flowing over them to cool em, they wont melt, no need to worry about that.
____________________
2nd time around Smile

CBT: 8/9/11
125 Varadero

BanditsHigh · Worse than a woman Joined: 21 Mar 2005 Karma :

They should get very hot, but glowing I'd have said no.

Seen this before when the mixture on a mates bike was too lean ... I'd get it checked out to be on the safe side ... if the engine is running lean then it'll damage valves/pistons.

All the best ... Barry

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

They should not be glowing hot...sure sign that something is amiss

0ddball · World Chat Champion Joined: 15 Jul 2005 Karma :

Nothing to worry about generally though as said, if they glow excessively it could be due to running lean or even too rich. Get it checked on a rolling road if you're concerned. If you have an infrared thermometer this can give a good idea of the mixture strength.

Jebus · Brolly Dolly Joined: 10 Jul 2004 Karma :

how much and for how long do you rev it? if you do it for 2 long they will glow, but i dont think that it should at idle.
____________________
2nd time around Smile

CBT: 8/9/11
125 Varadero

joe black · Nova Slayer Joined: 18 Oct 2006 Karma :

germans used to do this with their bmw at gps they called it red piping , very entertaining when you,re pissed.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Thrash it and yes they will glow red, but wouldn't expect that it to do that when just revved a bit.

Running lean or ignition timing wrong are the most likely causes.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

Had this on a pigsarsehole (Pegaso) the carb balance caps were holed.

Took ages to work out.