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How do you shoot blue flames out the tailpipe?

B

BCYL

Diamond Member
Saw the trailer for 2 Fast 2 Furious, and the cars in there were shooting blue flames out the tailpipe... Is that even mechanically possible? I mean, wouldn't you be burning pure fuel in the tailpipe by then?
 
You install an injector and a spark plug in your exhaust.. on a switch to control it.
 
They rig a spark plug on the tail pipe and blow some fluid through it. It doesnt mean the engine is shooting out flames.
 
Originally posted by: BCYL
Saw the trailer for 2 Fast 2 Furious, and the cars in there were shooting blue flames out the tailpipe... Is that even mechanically possible? I mean, wouldn't you be burning pure fuel in the tailpipe by then?
Click to expand...
So, somebody got any diluted fuel?
 
Or better yet, get a .99 bic lighter stick up to your but, but first make sure you have to fart, light the lighter then fart..and there ya go a blue flame 😉
 
Originally posted by: Nyical
Or better yet, get a .99 bic lighter stick up to your but, but first make sure you have to fart, light the lighter then fart..and there ya go a blue flame 😉
Click to expand...

dont forget the blueberries. Got to have blueberries, and ltos of em!
 
no no, I know how they use spark plugs to shoot flames out the back of the car... my question is how do they shoot BLUE flames... I mean, wouldnt you have to burn some high octane race gas or ethane to get the flame to burn BLUE?

I have no intention of seeing this film, nor do I want to ever do this to my car... I am just wondering if this is mechanically possible or just some hollywood trick...
 
Originally posted by: Angrymarshmello
Isn't it also possible if you run your engine extremely rich/lean?
Click to expand...

Yes... In fact that's why flame shoot out of the tailpipes of real racecars... They run a really rich air/fuel mixture, and the unburnt fuel gets ignited by the hot tailpipe on the way out...

But I haven't even seen BLUE flames on real racecars, only orange flames... Hence this question/post...
 
Originally posted by: BCYL
Originally posted by: Angrymarshmello
Isn't it also possible if you run your engine extremely rich/lean?
Click to expand...

Yes... In fact that's why flame shoot out of the tailpipes of real racecars... They run a really rich air/fuel mixture, and the unburnt fuel gets ignited by the hot tailpipe on the way out...

But I haven't even seen BLUE flames on real racecars, only orange flames... Hence this question/post...
Click to expand...
Actually it's because the A/F mix hasn't fully combusted yet and is still burning as it passes through the exhaust valve and into the exhaust system.

What do the color of the flames matter, anyway?
 
Originally posted by: Howard
Originally posted by: BCYL
Originally posted by: Angrymarshmello
Isn't it also possible if you run your engine extremely rich/lean?
Click to expand...

Yes... In fact that's why flame shoot out of the tailpipes of real racecars... They run a really rich air/fuel mixture, and the unburnt fuel gets ignited by the hot tailpipe on the way out...

But I haven't even seen BLUE flames on real racecars, only orange flames... Hence this question/post...
Click to expand...
Actually it's because the A/F mix hasn't fully combusted yet and is still burning as it passes through the exhaust valve and into the exhaust system.

What do the color of the flames matter, anyway?
Click to expand...

Well blue flames is a lot hotter than orange ones... I am just wondering if it's actually possible to have the A/F mixture burn this hot in the exhaust, or is it just something hollywood did to make the cars look 'cooler'....
 
It would probably burn blue if you use alcohol.

blah, quixfire beat me to it.

hmm.. thats a question anyways.. do the cars that run on alcohol use ethanol or methanol or?
 
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