Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Tip on Cometic head gasket install

Thread Tools
 
Search this Thread
 
Old Sep 15, 2003 | 02:10 AM
  #1  
blu00rdstr's Avatar
Thread Starter
TECH Enthusiast
 
Joined: Dec 2001
Posts: 548
Likes: 0
From: Dublin, CA
Default Tip on Cometic head gasket install

One of mine leaked when I first installed them, even though it looked perfectly aligned, and was slid down over studs.

The center gasket has an inner core cut like four siamesed o-rings. The outer core fits tight against the inner core, and they lightly snap into place.

Turns out the copper gasket spray is partially to blame. Like other people I sprayed between the sheets as well as the outside. If the inner part of the center gasket shifts, it sticks to the gasket spray and sticks in an overlap position.

So, when installing cometics, place the gasket on the block. Then slide your finger under the first sheet between the cylinders and around each cylinder. The seam between the inner and outer core should feel flat and smooth.
Reply
Old Sep 16, 2003 | 12:53 AM
  #2  
blu00rdstr's Avatar
Thread Starter
TECH Enthusiast
 
Joined: Dec 2001
Posts: 548
Likes: 0
From: Dublin, CA
Default Re: Tip on Cometic head gasket install

For what it's worth, the gasket sections were out of place after I checked it to insure the core was aligned, and slid it over the studs.

The most telling section is between the cylinders. If the tongues don't fit between the siamesed cylinder rings, the rings are overlapped.
Reply




All times are GMT -5. The time now is 11:49 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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