i am getting ready to buy a 92 foxbody. i dont know anything about them but that you can make them go really fast. so my question is...How do i make it really fast (11 second car)?
1992 5.0
leebunnyz
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lol
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I will guarantee you that turbo motors do not need back pressure...
As for a stock 5.0, you will get flatter torque curve and more driveable (low end) power with some exhaust restriction. You will get the best peak power with a tuned exhaust that has no back pressure.
The pipes or mufflers that fulies put on their headers are to tune the exhaust. It is not about backpressure, but rather about exhaust scavenging. When you line up all of the pressure waves coming from the exhaust you get a scavenging effect that helps pull the exhaust out of the chamber. The pressure wave pattern varies based on the diameter and length of tube. It is similar to acoustic tuning for a speaker box.
As for a stock 5.0, you will get flatter torque curve and more driveable (low end) power with some exhaust restriction. You will get the best peak power with a tuned exhaust that has no back pressure.
The pipes or mufflers that fulies put on their headers are to tune the exhaust. It is not about backpressure, but rather about exhaust scavenging. When you line up all of the pressure waves coming from the exhaust you get a scavenging effect that helps pull the exhaust out of the chamber. The pressure wave pattern varies based on the diameter and length of tube. It is similar to acoustic tuning for a speaker box.
back pressure is never a good thing. velocity is. sometimes a little backpressure can increase velocity but it is always better to have velocity with no back pressure. with a stock cam (or with most OTS cams) exhaust tube sizing is critical to maintain velocity. with a cam designed for a free flowing restrictionless exhaust (ie open headers) the exhaust can have plenty of velocity even with HUGE exhaust tubing.
again, backpressure itself is always bad.
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one more for the blue team
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scavenging, i couldnt think of that word
backpressure was a bad word
but i still have a point, no exhaust does you no good!
UNLESS the cam is made for that situation.
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depends when you guys say no exhuast..are we talking open heads or open headers? cuz open heads sounds pretty dumb to me!!!
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its amazing aint it
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open headers
open headers
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correct!
but the origanal question was how to get cheap power, and someone said take off your exhaust, so in this case its dumb
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yeah what an idiot...haha
removing the catback would probably help but removing the entire exhaust would definitely not.
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yeah would be really dumb..you would melt everything in site!!!
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Fuel cars dont use any kind of muffler. With that kind of hp, and the amount of air and fuel those engines move, getting everything out RIGHT NOW is the only thing they're concerned with, i assure you.
Ive never, ever... in all my years involved with this hobby... seen an engine make more power WITH backpressure/restriction, than without it. I understand exhaust scavenging, but thats only ever stressed with maximum effort engines. And you dont need a full exhaust or muffler to get good ES. A good set of well fabricated and tuned headers can get the job done in the ES department. Ive been present, and have had a hand in quite a few dyno sessions with alot of different engines, from 4 cyl's, to 8s. On top of that, ive seen so many dyno charts, that im literally bored of looking at them anymore, because they all look the same to me now. 9.9 times out of 10, every engine that ive worked with, seen.. watched on the dyno, whatever... made more power, and didnt suffer any major loss in the torque curve, or peak torque prodution without backpressure and restriction, than with it.
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another for the blue team.....
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FIXT....WHAT?
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