Has Anyone Herd Or Seen A 3 Inch Exhaust System For A Duratec Motor?
Or Do You Have To Get It Customer Made?
Or Do You Have To Get It Customer Made?
3 Inch Exhaust System
xalexakaspyderx
1 - 20 of 27 Posts
Joined
·
1,046 Posts
Has Anyone Herd Or Seen A 3 Inch Exhaust System For A Duratec Motor?
Or Do You Have To Get It Customer Made?
Or Do You Have To Get It Customer Made?
Joined
·
745 Posts
Joined
·
21,133 Posts
That's a matter of personal preference.
For me, a side exhaust is a little too old school on a Focus (unless it's a dedicated racecar). Plus, if it exited before the rear wheels, it: a.) might scrape it if it's on a lowered Focus b.) might not have enough system tubing length to fit the necessary number of mufflers/resonatorz for teh quietness.
Having said that, you can always dump another few hundred (money better spent elsewhere) on flange-ing your existing system to have a weekend-side-exhaust that's a little louder due to its shorter system length.
Modified Duratecs, ESPECIALLY when equipped with an exhaust header, are loud and need system length to keep 'em somewhat quiet. The goal for most who've been around the block more than once is a low-noise system. but one with some nice TONE. Fortunately, the Duratec is a great-sounding four cyl. engine. Deep, throaty but mellow through the right mufflers.
Joined
·
8,343 Posts
Personally, I'm a big fan of old-meets-new-school. For instance, Sport Compact Car's SRT-4, complete with side-exhit exhaust and AAR Cuda-styled stripes and hood.Z63R said:
The SRT-4, which gets most of its stock muffling from the turbo, is slightly better suited to this than a Focus. I still want to give it a try, but I'm not sure anyone without my ground clearance and muscle-car rake would be able to pull it off without scraping.
There are much worse ways of melding old school with new. FWD offset Torq Thrusts, anyone?
PS: my theoretical side-exit exhaust would be 90% resonator.
http://www.zeebone.com/bryfsvt/Vids/Fundrive.wmv
Lil somthing I did months ago.. EVIL GRIN.. Very deep grunt to it.
Lil somthing I did months ago.. EVIL GRIN.. Very deep grunt to it.
Joined
·
8,343 Posts
There's a Ford Racing kit for that, so it's much more common. Doing a side exhaust properly means not only the slightly custom exhaust work but also figuring out what to do with the rear bumper. My half-hearted plan involves an SVT bumper and a fiberglassed, carbon-covered diffuser.bbychvz said:
Joined
·
1,046 Posts
hey chris i have aquestion , your the man to talk to and ask. As stupid as i am. whats a resinator? and what does it do for the exhaust system. my MBRP exhaust systyem has that. kinda gives it a sound sorta like an STI
Joined
·
8,343 Posts
A resonator is not a restriction. Most designs to cause some slight loss of exhaust velocity, but they maintain a constant inner diameter.
The inner pipe is louvred or has a lot of small holes. The chamber around it is empty or filled with a sound-absorbing material. Exhaust tends to pass straight through the pipe, but sound vibrations bounce around the outer chamber and cancel each other out. The line between a resonator and a straight-through or "glass pack" muffler is fuzzy. Usually a resonator is 2-3" wider than the pipe, and anything larger is a muffler.
3" exhaust is a bad trade-off for a naturally aspirated car. You gain some power at the top, but you'd give up a lot of torque at the bottom. For a turbo car, it's usually worth it. The larger exhaust allows the turbo to spool more easily, and the turbo itself cancels out most of the disadvantages.
The inner pipe is louvred or has a lot of small holes. The chamber around it is empty or filled with a sound-absorbing material. Exhaust tends to pass straight through the pipe, but sound vibrations bounce around the outer chamber and cancel each other out. The line between a resonator and a straight-through or "glass pack" muffler is fuzzy. Usually a resonator is 2-3" wider than the pipe, and anything larger is a muffler.
3" exhaust is a bad trade-off for a naturally aspirated car. You gain some power at the top, but you'd give up a lot of torque at the bottom. For a turbo car, it's usually worth it. The larger exhaust allows the turbo to spool more easily, and the turbo itself cancels out most of the disadvantages.
Joined
·
21,133 Posts
^ ^ ^ Well said, sir.
I can only add that any muffler/resonator constructed with airflow-restricting louvres is way too old school. The only straight-thrus to use these days are perforated-core like Magnaflow or what's used in the FocusSport Stealth exhaust system.
I can only add that any muffler/resonator constructed with airflow-restricting louvres is way too old school. The only straight-thrus to use these days are perforated-core like Magnaflow or what's used in the FocusSport Stealth exhaust system.
Joined
·
8,343 Posts
But a perforated-core could work better. Louvres just aren't as aerodynamic.
Joined
·
21,133 Posts
The depth of sound deadening packing prolly has more to do with db reduction because, for example, the FocusSport Stealth uses two perf-cores and is quieter that their Sport system which uses 1 louvred and 1 perf...
and I'd bet ONE DOLLAR that the Stealth system flows better.~
and I'd bet ONE DOLLAR that the Stealth system flows better.
~
Joined
·
1,390 Posts
I have to disagree with this. The Duratec is a pretty eficient engine choked down by emissions costraints. Given a header, I would have little reservation of running a 3" system on a naturally aspirated 2.0L or 2.3L. The catch is sound levels, and you have to run a good muffler in conjunction with a resnator to quiet these beasts down.pitchblack23 said:
I've never run anything quieter than Dynomax Race Magnum muffler and resonators on my cars, and I'll be the first to say they're damn loud. But I was in search of every last bit of power. If I wanted better sound control, I would have run a louvered core resonator and a much different muffler.
http://marcymotorsport.com/video/project2300x-Exhaust-3-inch.avi
56k beware.
1 - 20 of 27 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
