3" duals to the rear bumper?
Thread Starter
Joined: Nov 2001
Posts: 45,369
Likes: 1,803
From: Chicago, IL
3" duals to the rear bumper? Right now I have TTS longtubes, going into 3" duals into Dynomax bullets with turndowns before the rear axle.
I removed my upper panhard bar, anyone have 3" all the way to the back?
I have a lead on some used Borla XR1 Sportsman race mufflers (center inlet/outlet), and have been contemplating doing that or frankly putting my Y pipe back on with a quiet muffler and dual cutouts... Car is pretty much RACECAR loud.
I removed my upper panhard bar, anyone have 3" all the way to the back?
I have a lead on some used Borla XR1 Sportsman race mufflers (center inlet/outlet), and have been contemplating doing that or frankly putting my Y pipe back on with a quiet muffler and dual cutouts... Car is pretty much RACECAR loud.
Re: 3" duals to the rear bumper? Generally speaking, mufflers that far back are pretty useless on duals. Might as well not use any. If you want any "muffling", you need the bullets ahead of the axle somewhere. You can run over the axle by moving some stuff around (fuel lines, evap stuff, ABS stuff). I considred it, but went under instead <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
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Thread Starter
Joined: Nov 2001
Posts: 45,369
Likes: 1,803
From: Chicago, IL
Re: 3" duals to the rear bumper? I might be able to run the Borla mufflers before axle though the ground clearance might be kind of crappy.
I would not personally advocate running the exhuast below the axle like Todd (no flames) because I can't drive around with that kind of ground clearance.
Maybe I can get Speed Inc. to take a pic of my exhaust since my car is there now.
I would not personally advocate running the exhuast below the axle like Todd (no flames) because I can't drive around with that kind of ground clearance.
Maybe I can get Speed Inc. to take a pic of my exhaust since my car is there now.
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Thread Starter
Joined: Nov 2001
Posts: 45,369
Likes: 1,803
From: Chicago, IL
Re: 3" duals to the rear bumper? My current setup, TTS longtubes, 3" duals and bullets with dumps at the axle, is peerless. It does not get get better than this except for me to run step headers.
But, it's too loud with my 422. I mean like open cutout loud... Like I have two cutouts.
Hell the old Mufflex was never this bad but I sold it.
But, it's too loud with my 422. I mean like open cutout loud... Like I have two cutouts.
Hell the old Mufflex was never this bad but I sold it.
TECH Apprentice
Joined: Nov 2001
Posts: 398
Likes: 0
From: Sterling Heights Mi
Re: 3" duals to the rear bumper? I haven't done this but, why not run 3" all the way back, with the driver side right next to the pass side? If a 4" pipe fits thru there, why not 2 3" pipes? The main clearance issue is from the axle to the floorboard right? Not from side to side? If you go that way, you can put a dual inlet/outlet muffler where a loudmouths resonator would go. My car is slightly lowered and has never bottomed out on the resonator. To keep the exhaust pipes close to the same length you could even criss cross the pipes after the axle, and make the pass side dump under the bumper on the drivers side.
BTW Harold the pic of your duals I was hosting is no more. As I'm sure you know Comcast took over @home. Let me know if you need it hosted again <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
BTW Harold the pic of your duals I was hosting is no more. As I'm sure you know Comcast took over @home. Let me know if you need it hosted again <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
TECH Enthusiast
Joined: Nov 2001
Posts: 623
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From: Houston / Dallas
Re: 3" duals to the rear bumper? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong>My current setup, TTS longtubes, 3" duals and bullets with dumps at the axle, is peerless. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually, an even better setup would have stepped dynatechs, custom 3" merge collectors and an X-pipe. I wonder who has that setup? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
<strong>My current setup, TTS longtubes, 3" duals and bullets with dumps at the axle, is peerless. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually, an even better setup would have stepped dynatechs, custom 3" merge collectors and an X-pipe. I wonder who has that setup? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
Thread Starter
Joined: Nov 2001
Posts: 45,369
Likes: 1,803
From: Chicago, IL
Re: 3" duals to the rear bumper? Sounds like a killer setup but I don't need an X pipe I have no need to boost low end tq.
There really is not enuff ground clearance to put the mufflers before the rear axle.
Black Sun, how far from the sides of the are your pipes before the axle? I need someone who mandrel bends 3" to make me over the axle pipes.
There really is not enuff ground clearance to put the mufflers before the rear axle.
Black Sun, how far from the sides of the are your pipes before the axle? I need someone who mandrel bends 3" to make me over the axle pipes.
Re: 3" duals to the rear bumper? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong>Sounds like a killer setup but I don't need an X pipe I have no need to boost low end tq.
There really is not enuff ground clearance to put the mufflers before the rear axle.
Black Sun, how far from the sides of the are your pipes before the axle? I need someone who mandrel bends 3" to make me over the axle pipes.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">PSJ,
I will have the TTS LT's 3" true duals with X pipe and bullets on my solid cammed 409 soon. I have been told that the X-pipe really quiets down the setup. It should be done in the next month or so. If you aren't in too much of a hurry, I can send you a sound clip when its done. Also, I will be exiting out the sides right before the rear tires with NASCAR style oval tips.
Shane
<small>[ March 21, 2002, 04:33 PM: Message edited by: XtraCajunSS ]</small>
<strong>Sounds like a killer setup but I don't need an X pipe I have no need to boost low end tq.
There really is not enuff ground clearance to put the mufflers before the rear axle.
Black Sun, how far from the sides of the are your pipes before the axle? I need someone who mandrel bends 3" to make me over the axle pipes.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">PSJ,
I will have the TTS LT's 3" true duals with X pipe and bullets on my solid cammed 409 soon. I have been told that the X-pipe really quiets down the setup. It should be done in the next month or so. If you aren't in too much of a hurry, I can send you a sound clip when its done. Also, I will be exiting out the sides right before the rear tires with NASCAR style oval tips.
Shane
<small>[ March 21, 2002, 04:33 PM: Message edited by: XtraCajunSS ]</small>
Staging Lane
Joined: Jan 2002
Posts: 99
Likes: 0
From: newburgh, in
Re: 3" duals to the rear bumper? not only does an x-pipe quiet the sound, but it boosts power over the entire rpm range, not just low-end torq. if they boosted low-end torq only, why would Nascars be running x-pipes? think about it.
TECH Fanatic
Joined: Nov 2001
Posts: 1,705
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From: Iowa :-/~
Re: 3" duals to the rear bumper? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Terry Burger:
<strong>You change exhaust systems more often than I wash my car. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Get back to work Terry! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<strong>You change exhaust systems more often than I wash my car. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Get back to work Terry! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Thread Starter
Joined: Nov 2001
Posts: 45,369
Likes: 1,803
From: Chicago, IL
Re: 3" duals to the rear bumper? Good points I don't follow Nascar. Aren't Nascar motors running with certain restrictions? I am also a 422ci not a 350ci if that matters.
Staging Lane
Joined: Jan 2002
Posts: 99
Likes: 0
From: newburgh, in
Re: 3" duals to the rear bumper? when you look at how an x-pipe produces its gains, it doesn't matter if you are making 300 hp or 500 hp. an x-pipe corrects inbalance in the exhaust pipes, which further aids in scavaging. it is the same concept as an H-pipe, but due too its shape, the gases flow much better. the reason i used the nascars as a comparison, is because you before stated that you didn't need the extra low-end. well, the engines in stock cars are continuoulsy operating between 7k and 9k rpm. the only time they use low-end torque is on the starts.
basic, x-pipe boost power and lower db's over the entire rpm range, which lends them to any exhaust application running duals. if you wants some more info, eventhough it is basically a sales pitch, go to dr. gases website drgas.com
this is what i have learned about x-pipes. if i have stated any misconceptions, somebody please step in and correct me.
later
basic, x-pipe boost power and lower db's over the entire rpm range, which lends them to any exhaust application running duals. if you wants some more info, eventhough it is basically a sales pitch, go to dr. gases website drgas.com
this is what i have learned about x-pipes. if i have stated any misconceptions, somebody please step in and correct me.
later
