Flamethrower Exhaust Made Easy

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Forum Name: Miscellaneous - Off Topic
Forum Discription: Topics that just don't fit anywhere else.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=31567
Printed Date: April 19, 2024 at 4:14 PM

Topic: Flamethrower Exhaust Made Easy

Posted By: old_mechanic
Subject: Flamethrower Exhaust Made Easy
Date Posted: May 04, 2004 at 9:16 AM

I just happened across this sight and saw an old thread about flame thrower exhaust systems. YOU DO NOT WANT TO BUY THE PREMADE KITS OUT THERE!!! They involve cutting spark to your coil to dump raw fuel through you exhaust to be ignited by a spark plug off a secondary coil near the muffler. The raw fuel running through will wash out your rings extremely fast and ruin your catylitic converter.xx( These kits just don't work proper at all with fuel injection. What you want to get is an extra coil, spark plug, small electric fuel pump, NOS fogger nozzle, some braided fuel line, a push button switch (only on when button is depressed) and another switch with a protective flip down cover. You split into your main fuel line and run that to the small pump and from the pump to the NOS fogger which you will insert into the exhaust just before the muffler. You need to drill a hole in the pipe before the muffler and weld a nut there, making sure there is no air leaks. The spark plug will be inserted into the exhaust tip with a drilled hole and a helicoil. mount the coil near the spark plug. Wire it so that when the switch is thrown, power goes to the coil and one side of the push button switch. once you start the spark, push the button which powers the fuel pump and you have flames with no damage to your engine. Let the button go and allow the spark to run for a few more seconds - burns off any excess fuel that drips out. Make sure your fuel line is clear of the exhaust pipe and well insulated against vibration. When you go to turn this on also make sure that your RPMs are pretty high if parked. I wouldn't recommend this for backing off tailgaters, just for good clean fun. thanks- james

Replies:

Posted By: chasesaccessori
Date Posted: May 04, 2004 at 10:09 AM

Ok these are old school. You are right about the kits though.

I think you would be better off putting the NOS fogger after the muffler rather than in front of it. If you fill your muffler full of fuel you are creating a bomb on your car when you light it off posted_image

. For best results, mount the spark plug and the fogger near the tip. posted_image

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(owner/installer)
Chase's Accessories
Ridgecrest, CA
in business since 92

Posted By: hersheyloc
Date Posted: May 04, 2004 at 1:25 PM

What if your tip is HUGE like mine? My tip is about 4 inches in diameter. Wont that look retarded? I'll try to get you a pick of it so you can give me some tips.

Hersh

Posted By: terryr
Date Posted: May 04, 2004 at 5:22 PM

What makes the coil spark? Putting 12V into it doesn't do it.

Posted By: sroth140
Date Posted: May 20, 2004 at 4:09 PM

spark plug

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MECP certified installer

Posted By: bigwheel15
Date Posted: May 28, 2004 at 9:25 PM

Yeah, I read something to this effect in a hotrod mag, they said the kits suck too.

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Posted By: 98 SNAKE EATER
Date Posted: June 10, 2004 at 6:08 AM

Click Here

Rick

Aztek T/A WS7 & 70 RAM AIR IV T/A
Moderator @ LS2, FAST LS1, FUELSLUT,
The F-Body Hideout, LS1Turd & ChopperForums

Posted By: Diecastoms
Date Posted: July 14, 2004 at 2:36 AM

Yo dawgs. Im new in town. Help a bro out!!

If Im just lookin fo something to show off in front of friends with, and not tryin to join comps and shoot super flames, will a stock kit be good enough?

IF I buy a kit is it upgradeable down the line or am I stuck with it?

Here's the kit Im lookin at:

https://www.xtremesaving.com/store/product_info.php?cPath=114&products_id=491&osCsid=ad90205960cb58a509136e9e9cc6d0e8

tell me whatcha think.

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Posted By: rtcoronet
Date Posted: July 17, 2004 at 9:19 PM

they used to make these things back in the 40s & 50s without a nos nozzle. there is bound to be a cheaper way.

you difinitely don't want the raw fuel going into the muffler either.

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bjtribble

Posted By: 98 SNAKE EATER
Date Posted: July 17, 2004 at 9:31 PM

rtcoronet wrote:

they used to make these things back in the 40s & 50s without a nos nozzle. there is bound to be a cheaper way.
you difinitely don't want the raw fuel going into the muffler either.

Back in the day, they either yanked on the choke cord or 2-stepped the ignition....

Either way, it will kill your engine and make it run rich....

I've been installing these things for years and injection is definitely the way to go since there's no engine damage or loss of power....

Rick

Posted By: ezeerider
Date Posted: September 02, 2004 at 5:32 PM

Old Mechanic is right...but he forgot one thing......how to make the coils spark. There are a lot of ways to do this. And these devices are the heart of most of the flamethrower kits that you find out there. I have a great system that I just built for my old 1981 shovelhead. Take a look.

posted_image

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We don't need no steenking signatures!!!!

Posted By: auex
Date Posted: September 02, 2004 at 5:42 PM

Couldn't just let this one die, huh?

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: redlight831
Date Posted: September 02, 2004 at 6:38 PM

I would hate to tailgate your ass

Posted By: upjeeper
Date Posted: September 02, 2004 at 8:42 PM

this might be a stupid question, but what do the cops think of flames shooting out of the back of a car?

is that legal?

Posted By: 98 SNAKE EATER
Date Posted: September 02, 2004 at 8:59 PM

Yer absolutely right posted_image

That was a stupid question posted_image

Posted By: upjeeper
Date Posted: September 02, 2004 at 9:12 PM

ouch, flamed by another newbie...

so the cops will ticket anyone for shooting flames out the back of your car? sheesh... no fun...

Posted By: 98 SNAKE EATER
Date Posted: September 02, 2004 at 9:28 PM

Yeah, most likely get ticketed for modified exhaust or sumthin else along those lines.....

Lucky for me, everytime I got pulled over, the officers either wanted to know how it worked or wanted me to install it on their private cars posted_image

Posted By: auex
Date Posted: September 02, 2004 at 9:36 PM

That is not street legal in any of the 50 states and I doubt it is legal in Canada.

Now please can this post die?

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: ezeerider
Date Posted: September 03, 2004 at 11:08 PM

To answer a few of your questions......

1. To auex.....No, I can't let this post die. Some people may find it interesting. Did someone twist your arm up behind your back and MAKE you view this thread? If you don't like the subject matter, then dont click on the thread. Wow, that was easy. Bye bye.

2. To redlight831......I don't shoot flames when cars are within 30 feet behind me. If the ignition skips a little, it rains gasoline. Makes for a guaranteed "bad hair day".

3. To upjeeper.....Cops love it...I'm not kidding. I have travelled thru Md, Del, Va, W Va, N.C., Pa, N.J., N.Y, and D.C. shooting flames occasionally in each state. I have been stopped 3 times and everytime the cop said they just wanted a closer look at my system. One cop did a u-turn and drove 6 blocks to catch me....he saw me in his rearview mirror and he said he thought someones house was on fire. He had me draw him a schematic and a parts list there on the side of the road. The most serious comment I got was "watch out where you shoot that thing". As far as legality goes. I built another one of these setups for a friends Sportster and he said a cop pulled him over and was kinda snotty with him, but he didnt know what to write the ticket for, so he told him not to shoot it on the street and let him go. There may be something illegal about it, but at least 20 cops have seen it and no tickets yet.

4. To 98 Snake Eater..... I've been to your site and seen your work. You helped to inspire this flamethrower.

5. To upjeeper again..... 98 Snake Eater may be a newbie to this board, but hes no newbie to electronics and flamethrowers. I now know four people running these systems on the street. I built two of them. None of us have gotten even one ticket yet. You just need to show a little judgement about when and where to shoot fire. If you blast flames up in some tractor trailers grille, or set some trees on fire, you will probably get ticketed and maybe worse. If ya show a little discretion, its a harmless diversion and good entertainment.

6. To 98 Snake Eater....... That has been my experience also.

7. To auex....... Show me the statutes that says this is illegal. Ya know, for someone that can't stand this topic, you sure do keep coming back. Look, man, if ya want help building one, all ya got to do is ask. Cheer up, man, its gonna be alright.

I have seen 5 or 6 different ways to light these off. I am testing them all currently. Future experiments include pressurised air injection, propane injection, exhaust cutouts, automotive fuel injectors, nitrous injection, and flame vortex iniators. My PT Cruiser is my next test bed.

posted_image

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We don't need no steenking signatures!!!!

Posted By: 91sentra
Date Posted: September 14, 2004 at 6:02 PM

how do you get the spark plug to spark

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guyjernigan

Posted By: ezeerider
Date Posted: September 14, 2004 at 10:58 PM

Several ways to do it.

I have heard of a setup comprised of a small elecric motor connected to a set of points and then to a coil..

I have seen bar-b-que ignitors used.

I have seen a Bernz-o-Matic propane torch setup as a pilot flame.

However I dont recommend any of these. I am currently using a setup sold by https://www.gotflames.net Its only been in use for 2 months now but it works very well. If you do a search on the internet, you will find at least six companies selling these types of spark boxes and flamethrower kits, however, these kits all require that you install one or two coils for it to work. The gotflames kit has an internal coil. I highly recommend it. If you buy one of their kits, tell them Knucklehead Steve sent you. If you want to see close up pix of one of my installations, and a wiring and plumbing diagram, go to https://www.hellonwheelz.com/flamethrower.html .

I am currently testing a new ignition device and contemplating propane injection. Stay tuned.

posted_image

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We don't need no steenking signatures!!!!

Posted By: flynntech
Date Posted: September 27, 2004 at 11:09 PM

My 3000 GT has a fully electronic ignition, not counting the crank/cam sensors which rotate with the engine. The spark is controled 100% by electronic signals form the computer. I don't think a computer is needed, but enough electronics to do this with a regular coil. Maybee used parts from other cars with electronic ignitions? The 3KGT, is not the most cost effective car to pick from, try anything else. Most cars today work the same way.

If you're good with digital, you can make an oscillator to create a good pulse frequency. I got an A in all of my digital classes, but I can't remember a thing, sorry.