Old hot rod trick

84_GT350 · 01-05-2001, 01:23 PM

I was just thinking how cool it would be to wire a spark plug into the exhaust to shoot flames out the tail pipe. Anybody know how this is done? Do you basically have to be standing on the gas to get enough unburned fuel in the exhaust to ignite it?

------------------
1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

Tom351 · 01-05-2001, 01:28 PM

I think they actually use glow plugs from a deisel engine in the tailpipes for that. I'm not sure cause I've never done it. You probably need to run a very rich mixture or have a cam with lots of overlap. The overlap would allow some unburnt air and fuel to pass right through the chamber to the exhaust at low rpm's.

------------------
67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Comp. Cam, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

Tom351 · 01-05-2001, 01:31 PM

A friend of mine did it (by accident) once when his mixture was so rich and the timing was so retarded that it was firing after the exhaust valve opened. The car ran like crap, but there were 1' flames coming out of the tailpipes. We could only see them at night.

------------------
67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Comp. Cam, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

[URL=http://www.mustangworks.com/mustangs/pictures/Listing1245-slot1.jpg]My 351W Fastback

Phil Ossifer · 01-05-2001, 03:11 PM

84_GT350,

You wanna' throw flames? Try this site, I think it'll have some info for you...
http://www.kustoms.com/bbc/garage/techgar/exflam/

Good luck,
Phil

Skankin · 01-05-2001, 09:26 PM

Definitely wouldn't work with cats.

I think they'd often unplug a sparkplug... sounds mean, and pumps a nice mixture out the exhaust.

01-05-2001, 10:52 PM

it can be done with spark plugs, but you need to run a carb and no cats. Bascially you put spark plugs in your tailpipes and hook them up to an ignition coil, each pipe gets a coil with a switch to switch them on. In order to ignite these bad boys you need to run the car, then shut the car off, pump the hell out of gas pedal and start the car up, as you start the car you flip the switch and now you have a nice flame. What happens when you shut the car off and pump the pedal, it basically floods the engine and when you go to start it, all the unburned fuel gets pushed out and is able to be lit up by the spark plugs, I hope this helps. GOOD LUCK WITH IT>

89LXCarb · 01-06-2001, 12:43 AM

I have a friend with a chevelle that has flamethrowers. He has spark plugs hooked up at the end of the tailpipes. If you use a manual choke carb it is really easy to do and shoots a nice flame!

------------------
4 cyl converted to 302
comp cams cam, ported GT 40 heads, Edelbrock intake, holley carb
Turbo coupe rear with 373's
4 inch cowl hood
finally done after what seemed like forever!!!!!

NoSlow5.0 · 01-06-2001, 09:19 AM

this was asked on stangnet and one guy replied with very specific instructions on how to do it. I don't know every step, so i'll not try and repeat it now. It will work with carb or EFI and with a cat pipe. Go to stangnet.com and search the recent archives for the subject. Light Em Up!!

Mach 1 · 01-07-2001, 01:16 PM

Just my opinion, but I think this would be very uncool. Maybe next youll want a fart pipe?

------------------
1993 GT/AOD
'93 Mustang GT

Five0 · 01-07-2001, 02:31 PM

I think it is cool on the older cars but I would not do it on a newer mustang.

Wasn’t that like a 60's thing?

------------------
James Cox
nochevy@hotmail.com
1991 Mustang LX
Best 1/8 time on motor 7.686 @90.20mph

01-05-2001, 01:23 PM	#1
84_GT350 Registered Member Join Date: Apr 1999 Location: Overland Park, KS, USA Posts: 1,631	Old hot rod trick I was just thinking how cool it would be to wire a spark plug into the exhaust to shoot flames out the tail pipe. Anybody know how this is done? Do you basically have to be standing on the gas to get enough unburned fuel in the exhaust to ignite it? ------------------ 1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

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01-05-2001, 01:28 PM	#2
Tom351 Registered Member Join Date: Oct 2000 Location: Atlanta,GA,USA Posts: 278	I think they actually use glow plugs from a deisel engine in the tailpipes for that. I'm not sure cause I've never done it. You probably need to run a very rich mixture or have a cam with lots of overlap. The overlap would allow some unburnt air and fuel to pass right through the chamber to the exhaust at low rpm's. ------------------ 67 Fastback - Arctic White Pearl paint 351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Comp. Cam, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

01-05-2001, 01:31 PM	#3
Tom351 Registered Member Join Date: Oct 2000 Location: Atlanta,GA,USA Posts: 278	A friend of mine did it (by accident) once when his mixture was so rich and the timing was so retarded that it was firing after the exhaust valve opened. The car ran like crap, but there were 1' flames coming out of the tailpipes. We could only see them at night. ------------------ 67 Fastback - Arctic White Pearl paint 351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Comp. Cam, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars. [URL=http://www.mustangworks.com/mustangs/pictures/Listing1245-slot1.jpg]My 351W Fastback

01-05-2001, 03:11 PM	#4
Phil Ossifer Registered Member Join Date: Jan 1999 Location: Sterling Heights, Michigan Posts: 217	84_GT350, You wanna' throw flames? Try this site, I think it'll have some info for you... http://www.kustoms.com/bbc/garage/techgar/exflam/ Good luck, Phil

01-05-2001, 09:26 PM	#5
Skankin Registered Member Join Date: Dec 1998 Location: London, Ontario, Canada Posts: 1,349	Definitely wouldn't work with cats. I think they'd often unplug a sparkplug... sounds mean, and pumps a nice mixture out the exhaust.

01-05-2001, 10:52 PM	#6
mikos chris Guest Posts: n/a	it can be done with spark plugs, but you need to run a carb and no cats. Bascially you put spark plugs in your tailpipes and hook them up to an ignition coil, each pipe gets a coil with a switch to switch them on. In order to ignite these bad boys you need to run the car, then shut the car off, pump the hell out of gas pedal and start the car up, as you start the car you flip the switch and now you have a nice flame. What happens when you shut the car off and pump the pedal, it basically floods the engine and when you go to start it, all the unburned fuel gets pushed out and is able to be lit up by the spark plugs, I hope this helps. GOOD LUCK WITH IT>

01-06-2001, 12:43 AM	#7
89LXCarb Registered Member Join Date: Jan 2000 Location: Columbus Grove, Ohio, USA Posts: 267	I have a friend with a chevelle that has flamethrowers. He has spark plugs hooked up at the end of the tailpipes. If you use a manual choke carb it is really easy to do and shoots a nice flame! ------------------ 4 cyl converted to 302 comp cams cam, ported GT 40 heads, Edelbrock intake, holley carb Turbo coupe rear with 373's 4 inch cowl hood finally done after what seemed like forever!!!!!

01-06-2001, 09:19 AM	#8
NoSlow5.0 YOU HAVE NO MARBLES!!!!!! Join Date: Aug 2000 Location: Jonesboro,Georgia,USA (Providence, Ri) Posts: 868	this was asked on stangnet and one guy replied with very specific instructions on how to do it. I don't know every step, so i'll not try and repeat it now. It will work with carb or EFI and with a cat pipe. Go to stangnet.com and search the recent archives for the subject. Light Em Up!!

01-07-2001, 01:16 PM	#9
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	Just my opinion, but I think this would be very uncool. Maybe next youll want a fart pipe? ------------------ 1993 GT/AOD '93 Mustang GT

01-07-2001, 02:31 PM	#10
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	I think it is cool on the older cars but I would not do it on a newer mustang. Wasn’t that like a 60's thing? ------------------ James Cox nochevy@hotmail.com 1991 Mustang LX Best 1/8 time on motor 7.686 @90.20mph