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

Please read and help

Thread Tools
 
Search this Thread
 
Old Mar 22, 2006 | 02:14 PM
  #1  
just-a-z's Avatar
Thread Starter
TECH Enthusiast
iTrader: (25)
 
Joined: Dec 2004
Posts: 592
Likes: 0
From: Houston, TX
Default Please read and help

I posted about a 2 weeks ago telling you guys how I forgot to torque the heads down properly and got coolant everywhere.

I finally got it all back together and torqued everything down right and everything seems great. UNTIL the car reaches about 190* and coolant starts to leak from what looks like the back of the block and smoke pours from the back of the intake manifold.

I used brand new gakets and bolts and I double checked that everything was torqued down correctly and all the surfaces were clean.

What do you guys think is going on?
I made sure all the bolt holes were completely dry as well.

Please help.
Reply
Old Mar 22, 2006 | 02:19 PM
  #2  
kossuth's Avatar
TECH Resident
20 Year Member
iTrader: (12)
 
Joined: Aug 2002
Posts: 969
Likes: 1
From: New Market, MD
Default

Ok, did you ensure you properly transfered the coolant pipe plugs on the back of the heads? I use thread sealer on those little bolts because they could seep on you. I ask that question. I'd pull the intake and see if that's where your coolant is coming from. I'd be willing to bet that one of the gaskets is gone or bad and that is your leak. 190 degrees is where the thermostat is opening so it's probiably changing the pressure characteristics enough to cause the leak. I'd check those first. It's most likely a irritating simple fix. If that's the problem it's a $30 fix and a couple of hours.
Reply
Old Mar 22, 2006 | 02:26 PM
  #3  
just-a-z's Avatar
Thread Starter
TECH Enthusiast
iTrader: (25)
 
Joined: Dec 2004
Posts: 592
Likes: 0
From: Houston, TX
Default

I think that is exactly what is going on. I don't remember any coolant plugs that go on the back of the heads, so I take it that is my mistake.

How do I fix this? Where can I get the plugs at?
Does that mean that coolant in my oil again?
Reply
Old Mar 22, 2006 | 02:36 PM
  #4  
JakeY2KZ's Avatar
TECH Enthusiast
20 Year Member
Photogenic
iTrader: (9)
 
Joined: Aug 2003
Posts: 607
Likes: 10
From: T.H. Indiana
Default

The plugs aren't really on the "back" of the heads. The plugs he's talking about are like the ones that are on the front of the block/intake area that connect you're TB to the coolant lines running below it. I hope that makes sense. You have to take the intake off to be able to get to them. They're about 1"x1 1/2" with 2 little stubs on the bottom of them. There are suppose to be 2 of them that plug in to the heads in the back of the block. You have to have them laying around b/c they were on there when you took the heads off.

If you don't have them, some sponsors carry them or try calling a gm dealership first to see if they have them in stock.
Reply
Old Mar 22, 2006 | 02:43 PM
  #5  
just-a-z's Avatar
Thread Starter
TECH Enthusiast
iTrader: (25)
 
Joined: Dec 2004
Posts: 592
Likes: 0
From: Houston, TX
Default

thanks guys, I'm on the phone right now with the dealership. I will keep you guys posted.

I hope the third times the charm on this one.

BTW - that MS3 sounds so badass in there and I cant wait to see what its got!
Reply
Old Mar 22, 2006 | 03:33 PM
  #6  
just-a-z's Avatar
Thread Starter
TECH Enthusiast
iTrader: (25)
 
Joined: Dec 2004
Posts: 592
Likes: 0
From: Houston, TX
Default

Do I have to change the oil again?
Reply
Old Mar 22, 2006 | 04:47 PM
  #7  
Grimes's Avatar
TECH Addict
iTrader: (3)
 
Joined: Mar 2003
Posts: 2,636
Likes: 2
From: Northern NJ
Default

if the problem was what was mentioned, and coolant only got out, then no, you don't have to change the oil.
Reply
Old Mar 22, 2006 | 06:18 PM
  #8  
just-a-z's Avatar
Thread Starter
TECH Enthusiast
iTrader: (25)
 
Joined: Dec 2004
Posts: 592
Likes: 0
From: Houston, TX
Default

thanks a lot!
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Mar 22, 2006 | 07:26 PM
  #9  
heavymetals's Avatar
TECH Fanatic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (3)
 
Joined: Mar 2006
Posts: 1,586
Likes: 9
From: Southern Calif.
Default

here is what they look like:
Attached Thumbnails Please read and help-dsc01173.jpg  
Reply
Old Mar 22, 2006 | 08:51 PM
  #10  
just-a-z's Avatar
Thread Starter
TECH Enthusiast
iTrader: (25)
 
Joined: Dec 2004
Posts: 592
Likes: 0
From: Houston, TX
Default

thank you very much. I should get them from TSP by the beginning of next week.
Reply




All times are GMT -5. The time now is 04:32 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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