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

Kooks installed, few ?'s

Thread Tools
 
Search this Thread
 
Old Apr 18, 2005 | 11:22 PM
  #1  
JasonG's Avatar
Thread Starter
Launching!
iTrader: (1)
 
Joined: Apr 2002
Posts: 259
Likes: 0
From: WV
Default Kooks installed, few ?'s

Just had my 1 3/4 Kooks headers installed today and after start up and for a while afterwards there was some white/blueish smoke coming from the exhaust, is this normall? Another thing that I'm not sure about is I'm pretty sure we didn't have any leaks when checking the car after initial startup and revving it a bit. After driving it I noticed alot more noise coming from the front of the car, which is to be expected. Thing is, it's really noticable when I get on it from 3000-4000 rmp like I can hear the car breathing right under my feet. Is that normal with longtubes? Or could it have developed a leak after I drove it a bit? So far I like it though, not nearly as loud as expected. But real wierd sounding there 3000-4000 rmp. I hope thats not the dreaded no-cat rasp I've heard about. I have it going through a SLP 2OTL so it still sounds pretty good. Thanks if ya made it this far.

JasonG

PS- we did have to grind the k-member a wee bit to get the drivers side in.
Reply
Old Apr 18, 2005 | 11:30 PM
  #2  
psykoTA's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Aug 2004
Posts: 1,236
Likes: 0
From: Central FL
Default

Originally Posted by JasonG
Just had my 1 3/4 Kooks headers installed today and after start up and for a while afterwards there was some white/blueish smoke coming from the exhaust, is this normall? Another thing that I'm not sure about is I'm pretty sure we didn't have any leaks when checking the car after initial startup and revving it a bit. After driving it I noticed alot more noise coming from the front of the car, which is to be expected. Thing is, it's really noticable when I get on it from 3000-4000 rmp like I can hear the car breathing right under my feet. Is that normal with longtubes? Or could it have developed a leak after I drove it a bit? So far I like it though, not nearly as loud as expected. But real wierd sounding there 3000-4000 rmp. I hope thats not the dreaded no-cat rasp I've heard about. I have it going through a SLP 2OTL so it still sounds pretty good. Thanks if ya made it this far.

JasonG

PS- we did have to grind the k-member a wee bit to get the drivers side in.
Do they ship the LT's with oil iniside? Maybe its something like wd40 to keep from rusting.

I know the LT's on my chevelle make enough noise down in the collector area that it sounds like a leak/lots of air moving.
Reply
Old Apr 18, 2005 | 11:31 PM
  #3  
MachoCamacho's Avatar
12 Second Club
 
Joined: Jul 2004
Posts: 479
Likes: 0
From: Mpls, Minnesota
Default

check your o2 sensors, make sure they arent against the headers...
Reply
Old Apr 18, 2005 | 11:39 PM
  #4  
psykoTA's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Aug 2004
Posts: 1,236
Likes: 0
From: Central FL
Default

Originally Posted by MachoCamacho
check your o2 sensors, make sure they arent against the headers...
What it sounds like is normal exhaust noise inside the collector
Reply
Old Apr 19, 2005 | 01:03 AM
  #5  
Sanders's Avatar
TECH Regular
 
Joined: Feb 2004
Posts: 451
Likes: 0
From: Indy
Default

And yes, its normal for the exhaust to smoke quite a bit after you first start it up. My QTPs smoked like crazy the first minute I started it up after the install.
Reply
Old Apr 19, 2005 | 11:40 AM
  #6  
JasonG's Avatar
Thread Starter
Launching!
iTrader: (1)
 
Joined: Apr 2002
Posts: 259
Likes: 0
From: WV
Default

Hey,

Thanks for the replies. Os'2 are ok, fronts are in and rears are zip tied off. No SES light yet either and I've done about 50 miles so far.

JasonG
Reply
Old Apr 19, 2005 | 04:42 PM
  #7  
noah89's Avatar
TECH Apprentice
 
Joined: Feb 2002
Posts: 364
Likes: 0
From: Chicago; South Side
Default

No smoking after my Kook's were intalled. A little additional noise under the hood. Oh, I did manage to blow something loose in the Corsa muffler. At least it's a free replacement.
Reply
Old Apr 19, 2005 | 05:55 PM
  #8  
01SOMWS6's Avatar
Teching In
iTrader: (1)
 
Joined: Mar 2004
Posts: 48
Likes: 0
From: Aston,PA
Default

My Kooks smoked for a little while after first start up. Thats to be expected on new exhaust though.
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 19, 2005 | 05:59 PM
  #9  
Hardtop00SS's Avatar
12 Second Club
20 Year Member
iTrader: (17)
 
Joined: Sep 2003
Posts: 1,199
Likes: 0
From: Richmond, VA
Default

you had to notch the K member for LT's? Thats weird, I thought the kook's slid right in....
Reply
Old Apr 19, 2005 | 10:27 PM
  #10  
JasonG's Avatar
Thread Starter
Launching!
iTrader: (1)
 
Joined: Apr 2002
Posts: 259
Likes: 0
From: WV
Default

Originally Posted by Hardtop00SS
you had to notch the K member for LT's? Thats weird, I thought the kook's slid right in....
Had I had the time I prob coulda worked on it more. It's was catching by by a gnats bottom on the driver side. Ground off a wee bit and in it slid. Very easy install overall considering some of the horror stories I've heard. lol

About the noise sound.... anyone else think this might just be normal or I might have had something come loose while driving?

JasonG
Reply
Old Apr 19, 2005 | 10:42 PM
  #11  
Hardtop00SS's Avatar
12 Second Club
20 Year Member
iTrader: (17)
 
Joined: Sep 2003
Posts: 1,199
Likes: 0
From: Richmond, VA
Default

the valvetrain noise is normal for LT's, but I dunno about the hissing/air sound under the car, my exhaust is a little too loud to hear that
Reply




All times are GMT -5. The time now is 04:38 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