Comments on: Exhaust flame throwers

By: Tom

Tom — Tue, 10 Feb 2009 00:59:44 +0000

Idea is right, circuit description has some mistakes though. This circuit could be improved upon a little bit. A rubber grommet is a MUST when running wires through a metal chassis. This mod as built does not interrupt the spark from the engine therefore the only fuel in the exhaust is what did not burn during combustion. If you wanted to interrupt the engine spark its easy with an MSD AL6, or AL6-2 select a low value for the 2step rev limit hit the rev limit swtic and rev the engine and it will randomly drop the spark from 1 cyl. The same cyl will never be dropped twice in row to prevent the washing of oil from the cyl walls. “raw unburnt fuel” (Sounds scary dont it?) is in you engine for 2 out of the 4 cycles anyway…

Oh and to the guy who put a switch to the ignition coil and the battery, and rigged another switch to cut all the spark plugs. If your still alive… There is an infinite to list the reasons why you should put this project down.

By: James Manning

James Manning — Thu, 01 May 2008 14:32:34 +0000

Hey, just hooked up an ignition coil and bolted it under my boot, connected that 2 the battery and earthd it, connected it to a spark plug in the exhaust tip and a switch in the dash. that works sweet. also put it switch in the dash which turns off all spark plugs in the engine, which should mean id pump raw fuel through my exhaust? spent a lot of time on this but cant seem to get any flames :S please help?

By: Ron

Ron — Fri, 30 Nov 2007 03:55:47 +0000

You can create a fuel injected system using a nitros injector. Depending on your app. Its a simple design. You don’t have to run your engine rich and can be used as either gas or propane. I built and designed mulitple systems and all work great. I designed a modified tailpipe to allow for expansion ( flame ) instead of having the common torch flame. Anyone looking for info is free to e-mail me for plans. If I get enough responses I’ll create a link to the info. I even added nitros to the mix but I found out it was a ” little ” too much for how I had it installed. Blew the exhaust right off the headers! Still working on that. I was told the wire schematic didn’t work by some people. They said it got too hot but I have never had any problems. Take a look at it and redesign it if you feel its needed. Let me know. Drop me a line at aryan900@yahoo.com. Put flame under subject so I know its not spam. Laterz

By: Oliver

Oliver — Wed, 30 May 2007 00:24:01 +0000

Hello Mate!! first thanks for the DIY information!!!
I built some and it seems that the power return to the transmiters and then don’t work again is this a common problem so I’ve changed them and include a diode but keeps doing it ? Could you please help me…
Cheers Mate!!

By: Oliver

Oliver — Wed, 30 May 2007 00:19:13 +0000

By: dave

dave — Tue, 20 Mar 2007 02:01:25 +0000

i am going to install an electronic cold start fuel injector into my exhaust that is supplied right from my fuel rail. anybody know if this is a good idea? also where should the injector and spark plug be installed into the exhaust?

By: Gravy Train

Gravy Train — Sun, 20 Aug 2006 00:21:25 +0000

I haven’t done any mods to my car as of yet, but I am planning on using the ‘un-burned fuel’ type of flamethrower to get some results. If you wire a secondary ignition coil into your car somewhere (preferebly close to the tailpipe, I’ll explain why in a bit) and wire one terminal on that to the battery. Wire the other terminal to a switch, and wire the switch to a ground somewhere on your car (slip the wire under a bolt that touches the chassis, or something metal would usually work.) What this will do is produce a spark every time you throw the switch on, then off again. It works this way due to the nature of the coil. The spark comes out of the HV (High-Voltage) output on the coil, and arcs to the ground on the car (i.e., almost any metal on the car, tailpipe, chassis, engine, ya know). The coil ought to be close to the spark-plug because pulses of HV electricity don’t travel as far as 12 volt battery-style stuff. Any more questions, just post.

By: dave

dave — Sat, 08 Jul 2006 18:51:07 +0000

i just built one and it seems that the power transmiters get hot and dont work again is this a common problem ive changed them but it keeps doing it ?
but its getting good flames though when it works
cheeers dave

By: John fischer

John fischer — Fri, 30 Jun 2006 08:21:58 +0000

Does this little unit that you make continuously spark (like spark, wait a second, spark again, ….) or do you have to hook a wire up to the main engine coil so it tells this little unit when to spark?

answers- papawheelie@charter.net

By: the blk knight

the blk knight — Thu, 29 Jun 2006 04:13:47 +0000

i need to know where can i get step by step plans & what parts i need to install ppropane flame throwers on my 95 mark viii.

By: Radu

Radu — Fri, 26 May 2006 13:31:24 +0000

i’m not sure… where are supoze to be connected the spark plugs??? help me pls because i’m a beginner (15 years old). thnx a lot

By: Jonathan

Jonathan — Tue, 07 Mar 2006 05:06:33 +0000

This was shown using propane the very first build for the monster garage on discovery channel (the Lawn mower car)

By: tennisd

tennisd — Mon, 06 Mar 2006 23:20:00 +0000

This mod actually CAN be done on a fuel injected car, but one would require a specially made kit (yes, they exist, and in quite large numbers, too!), or a bit of know-how and time to do it themselves. Either that, or a Mazda RX-7, a car which normally runs quite rich and has been known to spit flames from the exhaust regularly all by itself.

By: Mark Umpirowicz

Mark Umpirowicz — Mon, 06 Mar 2006 02:39:14 +0000

I made one of these for diesel trucks. I used a propane system and a taser for ingnition (spark plugs foul with diesel smoke). I got 10 foot flames with the flow set on high. I will post pics when I get to my other computer.

By: amias channer

amias channer — Sun, 05 Mar 2006 17:54:36 +0000

anyone got any idea of how much more environmental damage
this mod will inflict over using an un modded car ?
How does this work with catylitic convertors ?