Honda Dirt Bikes Forum

hey everyone i have a quick question.

when i get to high rpms then let off my bike shoots out about a 6 inch flame, is this normal? my friends 450 does it too...i kinda like it lol. some1 get to close to me ill light them on fire lol  
BIKE-2005 CRF250r
RIMS-Black excel with talon hubs
EXHAUST-Fmf powerbomb with titanium 4.1
"lord forgive me for i have sinned, i hit a 4th gear jump, 5th gear pinned"
REFS-Colbs213

Umm....no. This isn't normal. Not at all.  
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Here we go again!

Do they sell Flame arresters Skip?
This is not cool. Your loading up FUEL vaper and its egnighting when you let off the pressure. My guess.  
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Ruff!

Sounds wicked!
But I'm sure that it isn't doing the engine any good.  
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not normal, and that would suck to be riding your tail at a race!  
When the power of love overcomes the love of power; the world will know peace

Or riding trails!  
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See now if that flame thrower started a fire in the woods then EVERY dirt bike is a fire starter and thats not true. But thats what it would read in the paper!  But hey, the bike should not last long enough to be a issue un addressed, lets hope.  
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Ruff!

To clarify. I wish no bad on anyones bike.
But if your riding in the woods please address the problem. I do not run a arrestor but i also don't shoot a half a foot of flame out of my exhast.
That egnition and back pressure will start to foul your plug and run rich any way.  
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Ruff!

i'll post what should have been posted already.


PICS OR GTFO!  
Billy the Kid.

thanks to Woods.

and yes, i used to be ride4life.

Stick up, My long lost friend... This can happen. Any engine can.  
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Ruff!

But i agee BOTH BIKES??  
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Ruff!

now im not sure on this one. but can this not also be an indication of off jetting? ~pat  
PEACE GUYS ITS BEEN A BLAST!!!!! ~patrick

Not usualy as the bike would bog at high speeds. This should happen at low speed and what they THINK is mid band is prob low.
The cabon build up and leak can cause a det in the pipe. At that point the exsahst takes the hit . But the engine can as well. As the det creates a back pressure while the engine is trying to put the piston TDC with every fire through the cylnder.
The detonation will cause a back pressure that will throw that off. ( eventually)
bUT THATS JUST MY OPINION.  
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Ruff!

Whatever. I'm done on this thread, After all it's COOL.  
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Ruff!

hmm. lol you lost me but good point. lol. i have had my pos 150 no namer backfiring and shooting quite the flame lol. had to put a stop to that. that was when the baffle was right out of the beast. put it back in. extended the whole silencer by about 4 inches. and shes fine. ~pat  
PEACE GUYS ITS BEEN A BLAST!!!!! ~patrick