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

Loudmouth Rattling

Thread Tools
 
Search this Thread
 
Old Apr 18, 2003 | 11:06 PM
  #1  
lastSS's Avatar
Thread Starter
Launching!
 
Joined: Jan 2002
Posts: 270
Likes: 0
From: Yucaipa, CA
Default Loudmouth Rattling

My Loudmouth is rattling. I have tried to tighten everything up, but it seems to not help. Is it possible that it is actually banging up against the car? I would think that I would notice that. I have stock manifolds, stock cats and y-pipe. The only exhaust mod is the Loudmouth. Is this a common problem? It is really noticeable at low RPM's when I first get on it or when the car is decelerating. Any help with this would be great. I am going to be back underneath the car again tomorrow.
Reply
Old Apr 19, 2003 | 01:13 AM
  #2  
RB185AFM's Avatar
Launching!
 
Joined: Mar 2003
Posts: 294
Likes: 0
From: Nor Cal
Default Re: Loudmouth Rattling

Check were tht loud mounth connects to the stock I pipe. I ended up having to have mine welded to make it stop rattling.
Reply
Old Apr 19, 2003 | 01:43 AM
  #3  
blown 346's Avatar
TECH Fanatic
iTrader: (25)
 
Joined: Jan 2003
Posts: 1,426
Likes: 0
From: Loves park/rockford
Default Re: Loudmouth Rattling

I havent had any problems with mine rattling at all. The only problem i have is the y pipe bangs the floor, but that's 3 inch. Check all you're hangers and see what condition they are in, have you checked you're heat sheild?
Reply
Old Apr 19, 2003 | 08:31 AM
  #4  
lastSS's Avatar
Thread Starter
Launching!
 
Joined: Jan 2002
Posts: 270
Likes: 0
From: Yucaipa, CA
Default Re: Loudmouth Rattling

Where is the heat shield? It almost sounds like the rattle is coming from the connection of the Loudmouth and th I-Pipe. The hangers should all be good, the system is only about 6 months old.
Reply
Old Apr 19, 2003 | 11:21 AM
  #5  
RB185AFM's Avatar
Launching!
 
Joined: Mar 2003
Posts: 294
Likes: 0
From: Nor Cal
Default Re: Loudmouth Rattling

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by lastSS:
<strong> Where is the heat shield? It almost sounds like the rattle is coming from the connection of the Loudmouth and th I-Pipe. The hangers should all be good, the system is only about 6 months old. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">For a month I went under my car every couple of days to retighten everything. No matter how hard I would tighten it, 1 to 2 days later it would be lose again. I just had a shop put a small tach weld on the bottum of the pipe only. Solved all my problems untill I went with True Duals. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Reply
Old Apr 19, 2003 | 07:36 PM
  #6  
LT1 Guy's Avatar
Launching!
 
Joined: Mar 2003
Posts: 207
Likes: 0
From: kansas
Default Re: Loudmouth Rattling

Perhaps it's loose change in the cup holder?
Reply
Old Apr 19, 2003 | 08:21 PM
  #7  
slvrbird2000's Avatar
TECH Apprentice
 
Joined: Jan 2002
Posts: 352
Likes: 0
From: san antonio/college station tx
Default Re: Loudmouth Rattling

Loudmouth... <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />

Just kidding... check all the hangers and see if you can move it yourself. If it's secure, maybe get an Autotap and see if you're getting any KR, banging against the floorpan or somewhere else. Unlikely though.

<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Reply
Old Apr 21, 2003 | 09:41 AM
  #8  
SteeleSS's Avatar
Teching In
 
Joined: Mar 2003
Posts: 31
Likes: 0
From: Detroit
Default Re: Loudmouth Rattling

I have had my LM for 3-4 months no problems. But just the other week it started to rattle and it is VERY loud! I have yet to get under the car because I just didnt have the time, so let me know what you did to stop the rattle. Thanks!!! <img border="0" alt="[USA]" title="" src="graemlins/patriot.gif" />
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 Apr 21, 2003 | 09:41 PM
  #9  
last of the Z28's's Avatar
TECH Enthusiast
 
Joined: May 2002
Posts: 508
Likes: 0
From: rochester,ny
Default Re: Loudmouth Rattling

mine rattled 20 minutes after install. drove me nuts! it was fine when it was coldd but then after she warmed up every road imperfection caused it. i would kick the tailpipes (hot) it would rattle. i kicked them when it was cold and no rattle. so one day i went out for some spirited driving...got home ... jacked it up while it was running. then i put my gloves on and shut her down. a couple of shake and shimmies and i found the cause. it was the band strap on the i-pipe at the y. the rattle was actually the pipe twisting at the connection. i re tightened the strap with a 1/2" drive instead os a 3/8" and problem gone!
sorry so long.... yo just got to simulate the cause the best you can and get under there it'll be something simple.

ps. if i misspelled some words im sorry pro stock john! i tri 2 due beter next time i promiss! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Reply
Old Apr 22, 2003 | 12:13 AM
  #10  
lastSS's Avatar
Thread Starter
Launching!
 
Joined: Jan 2002
Posts: 270
Likes: 0
From: Yucaipa, CA
Default Re: Loudmouth Rattling

I found the rattle, it was the band that bolts the Loudmouth the stock exhaust. I am happy, for the time being. Thanks for your suggestions.
Reply
Old Apr 23, 2003 | 09:53 AM
  #11  
notfastenough's Avatar
On The Tree
 
Joined: Apr 2002
Posts: 142
Likes: 0
From: Rochester , NY
Default Re: Loudmouth Rattling

just take a impact gun to the clamps, that solved my problem!!! although I cant wait to try to take it apart when headers go on!
Reply
Old Apr 23, 2003 | 03:32 PM
  #12  
Bearcat Steve's Avatar
On The Tree
 
Joined: Nov 2001
Posts: 175
Likes: 0
From: Cincinnati, OH
Default Re: Loudmouth Rattling

I had a horrible rattle from the my LoudMouth that sounded exactly like the heat shield, but I couldn't find the problem. Finally found it -- the Y pipe had asplit right at the Y. Had a friend weld it and I've been to go ever since.
Reply




All times are GMT -5. The time now is 06:05 PM.

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