Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

What's a good 3" resonator?

Thread Tools
 
Search this Thread
 
Old Jan 28, 2012 | 07:24 AM
  #1  
TurboGoKart's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Sep 2009
Posts: 109
Likes: 0
From: Grove City, OH
Default What's a good 3" resonator?

LS1 swapped Nissan 240sx.

Current exhaust is 1 3/4" headers to 3" collectors to hi-flow 3" Y, out to a single 3" Magnaflow. It sounds amazing when I'm on it full throttle, but part throttle and driving around town is starting to bother me now. It's a good bit raspy at low throttle/rpm's.

I just want to put a small resonator between the Y and Magnaflow to cut down on the raspiness. What are some good ones?
Reply
Old Jan 28, 2012 | 09:06 AM
  #2  
VandykeT/A's Avatar
10 Second Club
10 Year Member
 
Joined: Jan 2010
Posts: 2,317
Likes: 20
From: Hurley, VA
Default

I've got SLP LM II's in my true dual set up. Alot of raspiness comes from the merge in the Y to though.
Reply
Old Jan 28, 2012 | 09:23 AM
  #3  
'00_Z's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Aug 2004
Posts: 1,458
Likes: 0
From: holding down the couch
Default

A resonator won't really help as it's a straight through pipe. With out cats or a y with a flowmaster style merge your best bet is to squeeze in another small muffler somewhere. I'm not that familiar with the exhaust layout on 240's so maybe someone else will be able to make a recommendation.
Reply
Old Jan 28, 2012 | 09:27 AM
  #4  
SH1ZN1T's Avatar
On The Tree
iTrader: (16)
 
Joined: Jan 2010
Posts: 134
Likes: 0
From: Norfolk, VA
Default

They are right about the Y merge. Post a pic of the merge and how much room you have. I would reccomend a Powerstick. I believe they have different lengths.
Reply
Old Jan 28, 2012 | 12:22 PM
  #5  
'00_Z's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Aug 2004
Posts: 1,458
Likes: 0
From: holding down the couch
Default

Originally Posted by SH1ZN1T
They are right about the Y merge. Post a pic of the merge and how much room you have. I would reccomend a Powerstick. I believe they have different lengths.
I replaced the resonator in my LM at one point with medium powerstick and it didn't sound much different. Added in with the Magnaflow it might help but the 14" is only made in a 2" in/out and the shortest 3" in/out is a 16" body.
Reply
Old Jan 29, 2012 | 12:38 AM
  #6  
TurboGoKart's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Sep 2009
Posts: 109
Likes: 0
From: Grove City, OH
Default

I have room for a 16". I'll try to get a pic soon. I'm replacing some stuff on the front end right now. I might have a pic in my photobucket though.
Reply
Old Jan 29, 2012 | 12:40 AM
  #7  
TurboGoKart's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Sep 2009
Posts: 109
Likes: 0
From: Grove City, OH
Default

Reply
Old Jan 29, 2012 | 01:06 AM
  #8  
dr_whigham's Avatar
The Scammer Hammer
Veteran: Marine Corps
15 Year Member
Photogenic
Liked
iTrader: (49)
 
Joined: Apr 2009
Posts: 6,717
Likes: 24
From: Lafayette, LA
Default

You might consider throwing a powerstick in there, but install it against the grain.

Not trying to contradict what '00 Z is saying, but I know for the GMMG guys it's killed their rasp. Hell, you already have a great merge, and the powersticks now have a true 3" center section, so no necking down like a Sweet Thunder.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jan 29, 2012 | 01:26 AM
  #9  
TurboGoKart's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Sep 2009
Posts: 109
Likes: 0
From: Grove City, OH
Default

When I said small, I just meant I didn't want to cut down on the nice tone much. I didn't mean size. As you can see, there's plenty to work with there.
Reply
Old Jan 29, 2012 | 07:21 PM
  #10  
Bad93z's Avatar
Teching In
15 Year Member
iTrader: (1)
 
Joined: Jan 2009
Posts: 34
Likes: 0
From: Edwardsville IL
Default

I added a 12" dynomax bullet to my magnaflow and it cut down the raspiness quite a bit and it still flows straight through
Reply
Old Jan 29, 2012 | 10:06 PM
  #11  
'00_Z's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Aug 2004
Posts: 1,458
Likes: 0
From: holding down the couch
Default

Originally Posted by dr_whigham
You might consider throwing a powerstick in there, but install it against the grain.

Not trying to contradict what '00 Z is saying, but I know for the GMMG guys it's killed their rasp. Hell, you already have a great merge, and the powersticks now have a true 3" center section, so no necking down like a Sweet Thunder.
No offense taken, I actually should have mentioned my set up was through the shitty pacesetter ory which is a big factor in why the powerstick didn't help with the rasp. It did help with deepening the tone a bit but the mid-range rasp did not go away.
Reply
Old Jan 29, 2012 | 10:30 PM
  #12  
sepsis's Avatar
TECH Fanatic
10 Year Member
iTrader: (7)
 
Joined: Dec 2011
Posts: 1,003
Likes: 0
From: Tampa-ish
Default

Powerstick? Who makes them?
Reply
Old Jan 29, 2012 | 10:35 PM
  #13  
jsteele90's Avatar
11 Second Club
iTrader: (13)
 
Joined: Mar 2007
Posts: 2,870
Likes: 2
From: delaware
Default

dynomax bullet.
Reply
Old Jan 29, 2012 | 11:08 PM
  #14  
dr_whigham's Avatar
The Scammer Hammer
Veteran: Marine Corps
15 Year Member
Photogenic
Liked
iTrader: (49)
 
Joined: Apr 2009
Posts: 6,717
Likes: 24
From: Lafayette, LA
Default

Originally Posted by sepsis
Powerstick? Who makes them?
Classicchambered.com

I went to that website & sweet thunders. Classic Chambered is the only one that has a true 3" inside section, with a 3.5" OD; Could fit that anywhere. Sweet thunder DOES neck down, however.

From their website: In this basic group of chambered mufflers, the inner baffle tubes are the same diameter as the inlet and outlet. However, 3" inlets and outlets come with 2½" inner baffle tubes.

Anyways, what sucks (for me) is Classic Chambered makes a true 3", but NOT in stainless. Sweet Thunder makes them in stainless, but with the smaller ID....
Reply




All times are GMT -5. The time now is 07:42 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE