noise after header install

Reply Subscribe

Thread Tools

Search this Thread

Nov 18, 2003 | 12:38 PM

DangeRuSS

Thread Starter

Staging Lane

Joined: Aug 2002

Posts: 69

Likes: 0

From: California

noise after header install

car is a 02 SS, installed Hooker long tubes with ORY. now at certain times while accelerating the car makes a flutter type noise and somedays its louder than others? Any ideas or is this normal for headers?
Thanks.

Nov 18, 2003 | 02:10 PM

blkZ28spt

11 Second Club

Joined: Feb 2003

Posts: 5,524

Likes: 1

From: The South

Did you use AIR restrictor plates? Might want to search on that topic, most LT's need them to keep the AIR check valves from burning up I think.

Nov 18, 2003 | 03:57 PM

taJon

On The Tree

Joined: Nov 2003

Posts: 199

Likes: 0

From: SeaCoast NH

Is it possible that the gasket didn't seat properly and you have an exhuast leak at the header?

Nov 18, 2003 | 05:12 PM

cudaeh

TECH Fanatic

iTrader: (2)

Joined: Aug 2003

Posts: 1,712

Likes: 0

From: michigan; where even our licens plates rust

flutter? does it sound like all the heat shealds are ratteling under the car all at the same time or is it like a popping noise.
rattle= rasp= add bullet mufflers before main muffler
popping= hole some where neer header

Nov 18, 2003 | 06:50 PM

DangeRuSS

Thread Starter

Staging Lane

Joined: Aug 2002

Posts: 69

Likes: 0

From: California

Not a popping noise more like a rattle. when driving I hear it more on the driver side of the vehicle. does not resemble an exhaust leak to me. thanks for the replies.

Nov 18, 2003 | 07:21 PM

jrp

SN95 Director

iTrader: (16)

Joined: Jul 2003

Posts: 10,755

Likes: 7

From: Valencia, Ca

my vote is check valves if you still have your air system hooked up.

Nov 19, 2003 | 06:59 AM

silverTA

TECH Resident

Joined: Jul 2003

Posts: 858

Likes: 0

From: Everywhere

check the Y pipe where its hooked to driver side header

Trending Topics

4th Gen Camaro Haltech Rebel LS Install

256

12.5k
LT1 camero. Fastest stock NA pony car ever?

1k

28.6k
"LS7 Lifters" Max RPM's/Lift/CAM Experience

46

2.0k
Boost Wonâ€™t go Any Higherâ€¦???

15

510
Head gasket weep on unrun engine

21

562

Nov 19, 2003 | 08:10 AM

cudaeh

TECH Fanatic

iTrader: (2)

Joined: Aug 2003

Posts: 1,712

Likes: 0

From: michigan; where even our licens plates rust

Quote:

Originally Posted by DangeRuSS

Not a popping noise more like a rattle. when driving I hear it more on the driver side of the vehicle. does not resemble an exhaust leak to me. thanks for the replies.

if it only happens at certent rpm ranges under load then i think its rasp. it happend to my car. i installed mac midlengts and it sounds like a monkey hitting a tin can at 2500 rpm under a load. at first i thought it was the heat shields ratteling at first but it persisted after removing most of them later i found out that the raspy noise was commen with headers and is easily solved by throwing in a couple of bullett muffelers... i havent bothered to fix it yet.. im getting more lazy and the probablem is becomming less annoying.

LS1 Tech Stories

The Best V8 Stories One Small Block at Time

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

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

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

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

Brett Foote

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Verdad Gallardo

Nov 19, 2003 | 08:32 AM

LS1INSIDE

11 Second Club

Joined: Feb 2003

Posts: 523

Likes: 0

From: WESLACO, TEXAS

check the a.i.r valves and buy some restrictor plates I have the same flutter w/o headers

Nov 19, 2003 | 08:55 AM

#10

joshs2000ss

Launching!

Joined: Nov 2001

Posts: 237

Likes: 0

From: Bowling Green, KY

Mine does that as well. I think it's more commonly know as the dreaded piston slap, notorious to LS1's. I'm gonna try to go from 5w-30 Mobil 1 to 10w-30 on the next oil change to try and remedy the issue.

Nov 19, 2003 | 06:54 PM

#11

mcflyz28

TECH Enthusiast

Joined: Nov 2001

Posts: 693

Likes: 0

From: Wilmington, DE

Go buy more air tube gaskets and cut two peices of metal it's your check valves.

Nov 21, 2003 | 11:13 AM

#12

DangeRuSS

Thread Starter

Staging Lane

Joined: Aug 2002

Posts: 69

Likes: 0

From: California

Thanks for the replies guys. Im gonna try the plate trick for the AIR tubes.

Nov 21, 2003 | 05:03 PM

#13

Wicked

Teching In

Joined: Mar 2002

Posts: 45

Likes: 0

Just curious. I have what i think is the same noise after a header install. I changed both check valves after creating two restrictor plates sandwiched between 2 AIR gaskets. The opening is 3/16." I still get a flutter under heavier acceleration tho. Any thoughts?

Reply Subscribe