Flaming exhaust - The 1947 - Present Chevrolet & GMC Truck Message Board Network

orange72350 · 08-05-2003, 05:25 PM

I just finshed reading the post about flame thrower exhaust. If i was to take a hot wire directly off my battery, wire it to a toggle switch, and run wire to a spark plug in my exhaust, would it work?i have a 350 with a performer intake, flat top pistons, larger valves, headers. will this be adequate/ it would be alot cheaper than buying the whole kit.

thanx dale

71-longbed · 08-05-2003, 05:34 PM

i think that whole kit is needed...if the raw gas is already ignited by the time it gets to that spark plug in the tail pipe..it wont work ...i may be wrong but i think that kit ...pauses the ignition of the engine very quickly allowing raw gas straight to the pipe and then ignited at the tips

dont quote me though

Earl Junior · 08-05-2003, 05:49 PM

Your idea will almost work. I don't think you'll get enough voltage straight from the battery, you need a coil to spark the plug. As for getting unspent fuel in the exhaust all you need to do is crack the choke a bit.

orange72350 · 08-05-2003, 05:55 PM

If a guy does like they described in the flame thrower post, put a wire under a spark plug boot, plug it in and run it to the plug in the exhaust, will it work? Shouldnt there already be unburnt fuel in the exhaust? a gasoline egine isnt 100% efficient, so i sorta figured there would be unburnt fuel in the exhaust/ anway, im prolby gonna try it. gotta replace the exhaust anway, built my own out of 3 inch aluminuzed piupe with blowmaster 40s/. anywya, all opinions appreciated.
dale

jcueckert13 · 08-05-2003, 08:19 PM

according to the "Jolly Roger" thats how your suppost to do it you just need to richen the air/fuel mix but living in new mexico it is to dry to try

jef5150 · 08-05-2003, 08:23 PM

yep,,my dad usta run them when he was a kid,,you put a small wire "inside" the boot of one of your spark plug wires,then push it onto the spark plug, run that wire thru the fire wall to a simple switch /push button, continue the wire along the frame rail to the back of the exhaust,,,,drill a hole in the end of the exhuast pipe a couple inches from the tip,,,put a spark plug in the hole with a nut, attach that wire to the top of an old spark,,,every time you press the button it allows spark to run to the back of the car,,,,,instant flames as long as you hold the button down ........now they sell a kit for$80-$110, they usta do it for $5.00 for everything,,,,,,,the kit looks "COOL",IF thats what you want,but you can do it yourself alot cheaper,,,,,jeff

orange72350 · 08-05-2003, 09:28 PM

how does a guy richen the air fuel mixture? play with the screws on the front of the carb? or does it need more than that?

70c10 · 08-05-2003, 09:40 PM

My dad used to do the same trick when he was younger also. They do look really cool at night!

orange72350 · 08-05-2003, 10:29 PM

ok, im definelty gonna try this, but what needs 2 be done in order to get the mixture richened up? i have the old divorced choke, so thats outta the question. what about the mixture screws? can they just be richened a bit> any ideas appreciated
thanx
dale

69GMC396 · 08-05-2003, 11:03 PM

Let me get this straight. You run a wire from a spark plug that is on the engine and then run it to a switch in the cab? Is that right?

orange72350 · 08-05-2003, 11:47 PM

yeah. that sounds about right. not the most professional way, but whaever owrks. its way cheaper to do it this way. mine is gonna get this treatment when ever i fire up the new engine.

dale

ronh72c10 · 08-06-2003, 08:09 PM

I don't see why this shouldn't work but I can see a few issues to keep in mind.

1. Since you're stealing power from one of the plugs you may miss when the switch is on. (or maybe even when it's off)

2. If you have good spark it may jump across the contacts of the switch when it's off.

3. You should make sure that you use well insulated wire from the plug to the switch and to the plug in the exhaust. (ie, spark plug quality) otherwise you will get some loss anywhere the wire comes near the frame or any metal parts. (causing a miss on that cylinder)

4. Probably won't have a lot of luck listening to the radio. (rfi noise) Keep the wire from any sensitive electronics. (zap!)

BTW I'm not trying to discourage anyone from trying, but want to point out that if you just use stereo wire it probably won't work.

That said, another idea that might work is if you have an extra coil mount it right near where the plug in the tail pipe is and wire it in parrellel with the coil under the hood, you can use low voltage wire to the coil and it might work better. The problem with this is that with a points ignition you're drawing twice the current through the points and will probably cause some problems and this idea probably wouldn't work with an HEI system. Matter a fact it might be a bad idea to try.

Disclaimer: Never tried any of the above, no idea if it'll work, probably would be best to ignore my ramblings.

Ron

08-05-2003, 05:25 PM	#1
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	Flaming exhaust I just finshed reading the post about flame thrower exhaust. If i was to take a hot wire directly off my battery, wire it to a toggle switch, and run wire to a spark plug in my exhaust, would it work?i have a 350 with a performer intake, flat top pistons, larger valves, headers. will this be adequate/ it would be alot cheaper than buying the whole kit. thanx dale __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

08-05-2003, 05:34 PM	#2
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	i think that whole kit is needed...if the raw gas is already ignited by the time it gets to that spark plug in the tail pipe..it wont work ...i may be wrong but i think that kit ...pauses the ignition of the engine very quickly allowing raw gas straight to the pipe and then ignited at the tips dont quote me though __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

08-05-2003, 05:49 PM	#3
Earl Junior Cadillac power Join Date: Oct 2002 Location: North Idaho Posts: 296	Your idea will almost work. I don't think you'll get enough voltage straight from the battery, you need a coil to spark the plug. As for getting unspent fuel in the exhaust all you need to do is crack the choke a bit. __________________ Just for the record, if I'm down to my last potato, I'm not sharing it with a guy who wants to kill me so he can get a better supply of virgins in paradise. That lesson is a little thing I call Economics 101, infidel style. --Scott Adams author of Dilbert

08-05-2003, 05:55 PM	#4
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	If a guy does like they described in the flame thrower post, put a wire under a spark plug boot, plug it in and run it to the plug in the exhaust, will it work? Shouldnt there already be unburnt fuel in the exhaust? a gasoline egine isnt 100% efficient, so i sorta figured there would be unburnt fuel in the exhaust/ anway, im prolby gonna try it. gotta replace the exhaust anway, built my own out of 3 inch aluminuzed piupe with blowmaster 40s/. anywya, all opinions appreciated. dale __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

08-05-2003, 08:19 PM	#5
jcueckert13 Registered User Join Date: Apr 2003 Location: Edgewood New Mexico Posts: 2,088	according to the "Jolly Roger" thats how your suppost to do it you just need to richen the air/fuel mix but living in new mexico it is to dry to try __________________ 1990 subaru legcy (daily driver) 1987 Toyota 4runner (weekend toy) 1968 C30 flatbed dually 1970 C10 longbed stepside (in pieces) 1976 Dodge Dart 1963 Dodge Dart

08-05-2003, 08:23 PM	#6
jef5150 Inline 69 Join Date: Apr 2003 Location: valleysprings,california Posts: 1,018	you dont have to spend $80-$110 yep,,my dad usta run them when he was a kid,,you put a small wire "inside" the boot of one of your spark plug wires,then push it onto the spark plug, run that wire thru the fire wall to a simple switch /push button, continue the wire along the frame rail to the back of the exhaust,,,,drill a hole in the end of the exhuast pipe a couple inches from the tip,,,put a spark plug in the hole with a nut, attach that wire to the top of an old spark,,,every time you press the button it allows spark to run to the back of the car,,,,,instant flames as long as you hold the button down ........now they sell a kit for$80-$110, they usta do it for $5.00 for everything,,,,,,,the kit looks "COOL",IF thats what you want,but you can do it yourself alot cheaper,,,,,jeff

08-05-2003, 09:28 PM	#7
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	how does a guy richen the air fuel mixture? play with the screws on the front of the carb? or does it need more than that? __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

08-05-2003, 09:40 PM	#8
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,857	My dad used to do the same trick when he was younger also. They do look really cool at night! __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

08-05-2003, 10:29 PM	#9
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	ok, im definelty gonna try this, but what needs 2 be done in order to get the mixture richened up? i have the old divorced choke, so thats outta the question. what about the mixture screws? can they just be richened a bit> any ideas appreciated thanx dale __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

08-05-2003, 11:03 PM	#10
69GMC396 Registered User Join Date: Jun 2003 Location: Goldendale, WA Posts: 54	Let me get this straight. You run a wire from a spark plug that is on the engine and then run it to a switch in the cab? Is that right?

08-05-2003, 11:47 PM	#11
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	yeah. that sounds about right. not the most professional way, but whaever owrks. its way cheaper to do it this way. mine is gonna get this treatment when ever i fire up the new engine. dale __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

08-06-2003, 08:09 PM	#12
ronh72c10 Senior Member Join Date: Jul 2003 Location: Mount Forest, Ontario, Canada Posts: 978	I don't see why this shouldn't work but I can see a few issues to keep in mind. 1. Since you're stealing power from one of the plugs you may miss when the switch is on. (or maybe even when it's off) 2. If you have good spark it may jump across the contacts of the switch when it's off. 3. You should make sure that you use well insulated wire from the plug to the switch and to the plug in the exhaust. (ie, spark plug quality) otherwise you will get some loss anywhere the wire comes near the frame or any metal parts. (causing a miss on that cylinder) 4. Probably won't have a lot of luck listening to the radio. (rfi noise) Keep the wire from any sensitive electronics. (zap!) BTW I'm not trying to discourage anyone from trying, but want to point out that if you just use stereo wire it probably won't work. That said, another idea that might work is if you have an extra coil mount it right near where the plug in the tail pipe is and wire it in parrellel with the coil under the hood, you can use low voltage wire to the coil and it might work better. The problem with this is that with a points ignition you're drawing twice the current through the points and will probably cause some problems and this idea probably wouldn't work with an HEI system. Matter a fact it might be a bad idea to try. Disclaimer: Never tried any of the above, no idea if it'll work, probably would be best to ignore my ramblings. Ron



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