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Old 11-13-2001, 07:14 PM   #1
Teh Legacy
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Question Exhaust Flames

I've seen it done on Gone in 60 seconds, and the fast and the furious...just wondering how they do it.... I've heard rumors that you put a spark plug in your tailpipe, and run a wire with a toggle switch on it....has anyone done this or knows how to do this?? just curious.... thanks
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Old 11-13-2001, 07:21 PM   #2
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2 ways that i know of...

1) spark plug... yes, theres a little switch and BAM! easy as pie to shoot out... but i dunno how much of you're wallet will suffer...

2) run no cats... that's right no cats.... then when you're accelerating very fast, and you shift (or big down shifts), you'll get little burps.... happens on race cars... saw it on Gary's WRX in the USTCC! you might want to PM our club president, he can better help you

-Gagan
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Old 11-13-2001, 07:27 PM   #3
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why would my wallet suffer???
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Old 11-13-2001, 07:50 PM   #4
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maybe suffer is the wrong word...what i meant was "i dunno how much that would cost you..."

-Gagan
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Old 11-14-2001, 02:24 AM   #5
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some guys runa switch on 2 of their spark plus wires combined with a coil pack firing in each tialpipe towards the tip

What they do, shut off 2 cylinders of a V-6 or V-8 causing the engine to just DUMP fuel down the exhaust...they they put spark plugs in the end of the exhaust and by that point there is enough air availble to fire the the HC's in the exhaust. Thereby causing the flames...that is why most guys rev their motors while they do it...that and the fact taht a flame back up the exahust will burn valves REALLY quick.

jeremy
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Old 11-14-2001, 12:04 PM   #6
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I think that the reason that the cars on the F&F did that is because of the turbo setups that they were running...
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Old 11-14-2001, 12:14 PM   #7
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Anti-lag?
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Old 11-14-2001, 02:42 PM   #8
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i think the reason that the fnf guys did it is cause it's a movie, that tends to not happen in real life

however, RX7's are notorious for spitting out flames, go visit www.rx7forum.com and do a search see what comes up
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Old 11-14-2001, 03:25 PM   #9
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Peter Farrell RX-7's do it. One of the RX-7 forum stories goes like this....

"I went a picked up my car at closing time, and started the long drive home. I took a road that was fairly twisty, and well traveled. I thought for the longest time that the flashes of light behind me were the police, but as it turns out it was FLAME shooting from my exhaust..."

or something like that.

sjd
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Old 11-14-2001, 03:34 PM   #10
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pretty much any car will shoot a quick flame down the exhaust on a upshift or downshift where the throttle plate slaps shut and the motor instantly runs rich for a second. W/o a cat you can do it...w/ a cat you need a special setup. And yes TFATF was done for effects only...none of those were running anti-lag cause youd HEARD that all the way down the exhaust.

jeremy
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Old 11-14-2001, 11:35 PM   #11
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when you see a race car shooting massive flames don't go, 'oh wow, it's shooting flames, I wanna do that'....understand race cars are RACE CARS, people who can afford a full engine rebuild after 5 laps around a track deserve huge flames out the tailpipe (can I get a second notion on that one? ) But getting a high flow cat, or hollowing out the cat is one way to do it....running rich with a turbo or NOS is another way....
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Old 11-15-2001, 12:02 AM   #12
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if I remember correctly there was a kit available from Japan for like $800 called dragon fire or something....it was in SportCompactCar mag when the FATF came out.....do a search I think there was a thread about this

Andres
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Old 09-24-2008, 02:21 PM   #13
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well rx7s spit due to their extremely rich nature (they put srt-4s to shame) and they burn oil as well. dont use fast and the furious as a reference for anything...in example he runs a 3 stage nos system and uses stage one while he is half way down where stage 1 is supposed to be for the lauch...stage 2 is for middle of the track and stage 3 is for higher gears. nos is also not flamable... if you ever see a real nos bottle it says that on it... so that being said if you really wana have the fake effects from hollywood thier are kits you can buy and pipe into your exhaust that will dump some sort of fuel into a spark plug in your muffler. or you can run anti-lag and haul ass for 3 months before your turbo ****s out
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Old 09-24-2008, 02:58 PM   #14
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Quote:
Originally Posted by ATX25RS View Post
if I remember correctly there was a kit available from Japan for like $800 called dragon fire or something....it was in SportCompactCar mag when the FATF came out.....do a search I think there was a thread about this

Andres
I believe there are multiple kits out there like this. Some of them might be ebay crap, i dont remember. But they have a computer that makes a misfire in the engine on random cylinders that pushes the fuel mixture into the exhaust pipes and either by sparkplugs or pure heat of the exhaust lights the mixture and shoots fire out the exhaust. I think they used this system in f&f and similar movies to get the fire you see on tv. Then used some effects to color it.
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Old 09-24-2008, 03:02 PM   #15
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Holy old post Batman!
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Old 09-24-2008, 03:23 PM   #16
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Quote:
Originally Posted by jeisen View Post
Holy old post Batman!
No kidding, 2001?!!

But.... my favorite build to date was my 71 Datsun 510. Basically a race car I drove on the street in the pre-Fast and Furious era. When I torched my sidedraft Weber fed L18 I dropped a 13b rotary in there; 175lbs lighter, 5 or 6 inches lower and about the same farther back. Always loved to see the faces in my rear view as I passed some doctor in his exotica and belched a 3 ft fireball at him in my 30 year old econo box. Ah..... I miss that car.
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