no machine needs back pressure. they need exhaust velocity to build torque and to get the spent gasses out of the motor. the easiest way to get velocity is to add back pressure ( think of a garden hose with a pressure nozzle).
if velocity is too low the valves will burn, you will also loose torque. since the system he has should have a headpipe designed to work with packing I would say its best to run it with the muffler core.
as for the drag car theory, alot of drag motors get rebuilt mid season and much more then a 20 year old trike. also the headers you see are equal length and designed for that motor. There not 50,000 dollar versions of the motor in another truck or car for nothing.
alos keep in mind many run exotic fuels, some run cooler then what is out of the pump.
1983 honda 70atc, als,ot done, need throttle cable and assembly. PM me if you have this.
1985 honda es 250 big red.
85 percent restore. 10x10 douglas 190's 22-11-10 at 489's. 12x7 itp c series 24-8-12 swamp fox. some accent painting. snorkel everything and a custom PCV system. moose air filter. cobra utility exhaust. 2.5 um wheel spacers.
A trike to show up the modern utilitys
2002 scrambler 400 2x4 uni pod filter, lots of weight shaving, v force reeds, HPD race pipe, 39mm pwk or 34mm, 12-1 head, trail porting, custom clutching, hole shots on t-9s +1 all around. works shocks . trail bike with drag tweeks.
...What should I do now? Get a new exhaust or repair this current one, mind you this one here is full of exhaust sut (or soot) and seems relativley easy to repair...I beleive the previous owner put this exhaust on a couple years ago,
,,,until the silencer falls out and its to loud to ride, safely
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Originally Posted by Xowner
, its an electrical problem.
