Exhaust Question (true dual vs X pipe) - Team Camaro Tech
Engine General Engine Discussion.

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old Aug 25th, 08, 01:17 AM Thread Starter
Senior Tech
Levi
 
Join Date: Oct 2007
Location: Modesto Ca
Posts: 1,451
Lightbulb Exhaust Question (true dual vs X pipe)

Hey guys I am just curious to know something. I really like the way the true dual exhaust systems sound, the exhuast hits ALOT harder I think. I have a x pipe on my camaro and its not as rumbley as a true dual. I take it this is normal right? I went with the x pipe for future preference in just having the exhaust ready to breathe the best.

so far I have for both is
True Dual - Louder, you can tell which side of the engine is burning oil or is acting up.

x pipe - Lets the exhaust scavenge better which leads to increased HP at a higher rpm.

So far thats all i got...anyone else want to tell me why the x pipe is better to have?
.Bad75. is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old Aug 25th, 08, 04:49 AM
Senior Tech
 
Join Date: Dec 2001
Location: Fairfield, CA
Posts: 6,246
Re: Exhaust Question (true dual vs X pipe)

Increased power is a pretty compelling reason, and it happens throughout the rpm range.

"For those that will fight for it...FREEDOM ...has a flavor the protected shall never know."
Semper Fi! L/Cpl Edwin L. "Tim" Craft, B Co 3rd AT's, Khe Sanh Combat Base, February, 1968
onovakind67 is offline  
post #3 of 9 (permalink) Old Aug 25th, 08, 05:57 AM
Senior Tech
Kyle
 
Join Date: Mar 2004
Location: Springfield, Va
Posts: 538
Re: Exhaust Question (true dual vs X pipe)

Yeah the hp increase isnt only at higher RPM it should be pretty much from idle to redline i believe. that said the hp gain isnt that impressive .. but any hp gain is good hp gain

1969 Z/28 CLONE 350
4 SPD MUNCIE,
4 WHEEL DISK BRAKES,
4:11 POSI
BLUE W/WHITE STRIPES


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
GreyShadows is offline  
 
post #4 of 9 (permalink) Old Aug 25th, 08, 08:19 PM Thread Starter
Senior Tech
Levi
 
Join Date: Oct 2007
Location: Modesto Ca
Posts: 1,451
Re: Exhaust Question (true dual vs X pipe)

does sounder nicer at high rpms though imo...
.Bad75. is offline  
post #5 of 9 (permalink) Old Aug 25th, 08, 08:50 PM
Gold Lifetime Member
Skip
 
Skeeter55's Avatar
 
Join Date: Feb 2008
Location: CA
Posts: 6,628
Re: Exhaust Question (true dual vs X pipe)

Yeah the X-Pipe dose quite it up a bit.. But it sounds really tunned.


I NEED TO HIT THE LOTTERY
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Skeeter55 is offline  
post #6 of 9 (permalink) Old Aug 26th, 08, 07:42 AM
Retired
Jim
 
click's Avatar
 
Join Date: Jun 2001
Location: Central Minnesota
Posts: 15,981
Re: Exhaust Question (true dual vs X pipe)

Skip I see a smudge on the driveshaft wow thats clean

Click..is Jim..former owner of a 69RS-LM1 350/255 - 700r
"There will come a time when you believe everything is finished,
That will be the beginning." Louis L'Amour
click is offline  
post #7 of 9 (permalink) Old Aug 26th, 08, 07:56 AM
Gold Lifetime Member
Skip
 
Skeeter55's Avatar
 
Join Date: Feb 2008
Location: CA
Posts: 6,628
Re: Exhaust Question (true dual vs X pipe)

Quote:
Originally Posted by click View Post
Skip I see a smudge on the driveshaft wow thats clean
Thank you Jim . Its easy to whipe off when you have a car lift.

I NEED TO HIT THE LOTTERY
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Skeeter55 is offline  
post #8 of 9 (permalink) Old Aug 26th, 08, 08:25 AM
Senior Tech
Mike
 
Join Date: May 2006
Location: Tacoma, WA
Posts: 2,238
Re: Exhaust Question (true dual vs X pipe)

My question is why?
Why does the X pipe increase hp?


I had no X pipe on mine and when I went with a new exhaust (using the same mufflers but new headers and exhaust) the guy talked me into an H pipe sort of thing which is what he put on his drag race customers cars.

I was a non believer. I couldn't understand why one side of the engine would care or how it would be effected by the other side of the engine's breathing.

The car was notibly quieter, idled much smoother or rather the car didn't shake as much with the cam I have in it, which is very lumpy.
And, at the track, I did an 11.60 or so several times. It sounded different and behaved differently at rpm. The wind up was smoother in a way. I guess I can't find the right word I'm looking for but suffice to say, I believe now.
But I still don't understand the theory as to why this works.

Can someone enlighten me?
mkpatrick is offline  
post #9 of 9 (permalink) Old Aug 26th, 08, 09:11 AM
Senior Tech
 
Join Date: Dec 2001
Location: Fairfield, CA
Posts: 6,246
Re: Exhaust Question (true dual vs X pipe)

The x-pipe basically terminates the collectors, in the same manner that the collector terminates the primary tubes. With a 'true dual' system, the termination occurs at the end of the tailpipe. The secondary scavenging wave is created at this point, and tends to be more timely with the shorter collector. With the pipes tied together, there is a pulse created in the junction every 90° of crank rotation, as opposed to the uneven timing of the conventional duals.
Here's a link to an old thread on this board that deals with exhaust system design:

https://www.camaros.net/forums/showthread.php?t=16596

"For those that will fight for it...FREEDOM ...has a flavor the protected shall never know."
Semper Fi! L/Cpl Edwin L. "Tim" Craft, B Co 3rd AT's, Khe Sanh Combat Base, February, 1968
onovakind67 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome