Pulled the intake and found this....
Thread Starter
TECH Senior Member
iTrader: (9)
Joined: Dec 2001
Posts: 5,395
Likes: 1
From: Estero, FL
Pulled the intake and found this.... I have posted a couple times concerning coolant mysteriously dissapearing, smelling it in the exauhst, but no white smoke, no leaks of any kind, nothing. Well I pulled the intake off the other day and found this in #7 intake port.
Any idea what caused this. Some have said it is bad head gasket with a small enough crack to be a pain in the ***. But with a cracked gasket how does oil get thrown all the way through the intake to #7 and NONE of the others?
Any idea what caused this. Some have said it is bad head gasket with a small enough crack to be a pain in the ***. But with a cracked gasket how does oil get thrown all the way through the intake to #7 and NONE of the others?
Last edited by NataSS Inc; Oct 26, 2003 at 12:06 PM.
I've seen this before. That intake port is leaking coolant. Do a coolant pressure test and you will see it bubble out on the side of the port. Basically, that head is scrap.
Mikey
Mikey
Originally Posted by mikey
I've seen this before. That intake port is leaking coolant. Do a coolant pressure test and you will see it bubble out on the side of the port. Basically, that head is scrap.
Mikey
Mikey
Those heads are high $$
Originally Posted by SSactionLs1
goto who did em and have words/fists...and if they dont help you then tell us who it was and they wont get any business from ls1tech 
Trending Topics
YUP,it's a cracked intake port.Happened to me on one of my LS6 Heads.Same exact problem(coolant dissapearing)Ended up being a crack on the short side of the port.
MTI should 100% warrenty the Head without question.They will probly try to blame a air pocket of causing it.
MTI should 100% warrenty the Head without question.They will probly try to blame a air pocket of causing it.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
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
TECH Junkie
Joined: Nov 2001
Posts: 3,604
Likes: 0
From: Los Angeles
Guys, that kinda stuff happens sometimes, this isnt the first time. They can fix that head no problem, it isn't scrap. Unfortunatly it means you'll be without a head for a bit, but the upside is you'll get the head back and you'll now no longer have to wonder where your coolant went.
Thread Starter
TECH Senior Member
iTrader: (9)
Joined: Dec 2001
Posts: 5,395
Likes: 1
From: Estero, FL
Well I will pop the head off the car this week and get it pressure tested. If it is cracked I will send it back to MTI.
One thing I forgot to mention. There is also oil in the #7 intake runner and only in the #7. And the same junk thats in both of those places is also in the PCV as well. When I went to pull the intake I notcied 2 small drops of that residue right under the PCV. So I pulled it out and stuck my finger in it and it was covered with that same crap.
One thing I forgot to mention. There is also oil in the #7 intake runner and only in the #7. And the same junk thats in both of those places is also in the PCV as well. When I went to pull the intake I notcied 2 small drops of that residue right under the PCV. So I pulled it out and stuck my finger in it and it was covered with that same crap.
TECH Fanatic
Joined: Nov 2001
Posts: 1,027
Likes: 2
From: KS
Seems to me there might be 2 problems. 1 is your coolant leak. The other is the oil. Look VERY closely to the upper corners of that intake runner just inside the port. The LS6 heads are VERY thin there. Those ports looks plenty wide and would make me suspicious of them breaking through in the the rocker arm area. Look in the very corner of the rocker arm boss, between the intake side and the rocker arm boss by the pushrod with rocker arm cover off ofcourse. Then on the exact opposite side. It can be welded and you'll be fine if there is a hole. But it can't be pressure tested. You will just have to see it to find it.
"That head is scrap"??? Come on Mikey, as a shop owner I'd have expected a more realistic answer. These heads are aluminum and can easily be welded up and refinished. Repairing a port-thru crack is very simple, and very common. I've literally torn up a combustion chamber when a piston came apart, and it was very simple to weld back up and finish. You couldn't even tell the damaged chamber apart from the others when it was done.
Tony
Tony
Originally Posted by robertbartsch
the deller should send him a new head, plus $ parts and labor...
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
I'm not sure why you should subscribe to the notion that "this stuff happens...." ...you paid full value and received a head that is defective....
I would expect the seller to replace the head with a new unit and pay for parts and labor to swap the bad one out...
I would expect the seller to replace the head with a new unit and pay for parts and labor to swap the bad one out...
Originally Posted by robertbartsch
I'm not sure why you should subscribe to the notion that "this stuff happens...." ...you paid full value and received a head that is defective....
I would expect the seller to replace the head with a new unit and pay for parts and labor to swap the bad one out...
I would expect the seller to replace the head with a new unit and pay for parts and labor to swap the bad one out...
I wasn't subscribing to that notion. MTI will warranty the defective part, the head (assuming it was bought new through them or through a supply vendor, if it was bought second hand, I doubt they would), I don't have a doubt about that.
I'm saying that shops that make/sell a product never re-imburse the consumer the labor and/or extra parts (gaskets,etc) needed to for the job unless they (the company that sold/installs it) performs the repair. If you're a remote buyer and order your stuff and have it shipped to you and have it installed you're NOT going to be reimbursed for the labor another shop/person did. That's just the way it is. I have never seen a shop/tuner/vendor prove me otherwise.
Last edited by CANNIBAL; Oct 27, 2003 at 12:50 PM.