here's one system,
disclaimer first.
the below described system is for information purposes only. any use of these ideas are at the experimenters own cost and risk. any and all expenses are your own cost and risk. any damage to your vehicle or yourself your neighbors or any one else risking themselve to be near you are on your own dime. and anything you may think to blame me for, are your own fault.
ok. . that done. . here goes...
place propane/butane/acetylene tank in bed, tied down or use a bracket. to keep it from rolling out and hitting someone. attach a pressure gauge and pressure reducer (like for welding) install a flashback valve, a electric control valve wired to dash or shifter... .
then pipe to exhaust, using flexable line. if duals exhaust, pipe to both of them (crank up the gas volume if using two pipes).
install fittings to exhaust pipe(s). i would recommend threaded sensor fittings.
use a non heat sensitive fuel line for the last two - three feet to the exhaust pipe(s).
thread on the fitting.
fitting toward engine = gas mixture
fitting toward tail end of tail pipe = spark device (a long/extended tip spark plug and coil wired to turn signal flasher unit. wired to gas valve. so both items operate at same time.
connect the system to a 12volt hot wire. using a fuse then to the switch
note: different fuels provide different flame colors. if you want to get creative. throw sulfur, copper sulfate or other powders into exhaust before lighting them up.
black powder may be used sparingly. not really recomended for rookies.
caution vapors may be toxic... ... ... .....
open the fuel tank valve and adjust pressure to 5-10 psi
start video camera.
then start engine, turn on your flame system.
if you want more flames,
add anouther fitting after the spark fitting a few inches down stream.
this is to add more fuel after the spark fitting.
so the hot flames will ignite the added fuel. use diesel, lube or cooking oil at the third fitting.
a spray nozzle is recomended for this fuel fitting.
a boat fuel can with a electric pump works well.
the fuel pump may be wired to a second switch or the system switch. (at the solinoid or flasher unit.
be sure to have a flash back device on the second fuel supply as well.
now if you insane enough to want to have this kind of fun. post some photos.
and, can i get you interested in explosive target shooting, as well.....