Blown head gasket
09-05-2009, 01:17 PM
#1
Blown head gasket First of all before anyone tells me to use the search button, I have search, but I have addition questions to ask.
Recently I have been over heating with coolany boiling/spilling out of the neck of the coolany resivor tank. I started the car (cold) multiple times with the radiator cap off to fill the radiator as the car heats up. Each and everytime I do this, I have air bubbles coming to the surface. I checked the oil and the oil is thin, runny and looks like there is coolant mixed in, plus it smells like coolant (dead give away).
Anyways, my question is when I take my heads off to replace the gaskets, is there anything else I should replace. My car has 108k miles and the engine is all stock. I am not sure if the head(s) are cracked, so I am not sure if those are needing to be replaced. But just wanted to know if there is anything else I should replace while I have the heads off. Thanks.
Recently I have been over heating with coolany boiling/spilling out of the neck of the coolany resivor tank. I started the car (cold) multiple times with the radiator cap off to fill the radiator as the car heats up. Each and everytime I do this, I have air bubbles coming to the surface. I checked the oil and the oil is thin, runny and looks like there is coolant mixed in, plus it smells like coolant (dead give away).
Anyways, my question is when I take my heads off to replace the gaskets, is there anything else I should replace. My car has 108k miles and the engine is all stock. I am not sure if the head(s) are cracked, so I am not sure if those are needing to be replaced. But just wanted to know if there is anything else I should replace while I have the heads off. Thanks.
09-05-2009, 02:10 PM
#3
like i said before Chris, your heads should be fine... "IF" anything "cracked" it would be the block... but if you just blew a head gasket, then that's all you really need to worry about fixing. Just replace it and move on...
BUT, like I said before, this would be a prime opportunity for a H/C swap
you need to start pulling some stuff apart so we can find the actual cause of the problem...
BUT, like I said before, this would be a prime opportunity for a H/C swap
you need to start pulling some stuff apart so we can find the actual cause of the problem...
09-05-2009, 06:01 PM
#8
11 Second Club
iTrader: (33)
Join Date: Nov 2006
Location: Colorado Springs
Posts: 926
Likes: 0
Received 0 Likes
on
0 Posts
Id rather do heads/cam and leave the stock exhaust manifolds till you can afford headers. Trust me, tearing the motor apart 2 times isnt fun. Plus if you pull it apart twice you get to buy another set of head gaskets. So just do heads and a cam, then save for long tubes which arent very expensive these days.
As for the head gasket...when whoever put in the ls7 lifters did they replace the head gaskets that time or just spray some copper on them and reuse them? If they did that, then Id put my money on the shitty stockers giving out on you.
As for the head gasket...when whoever put in the ls7 lifters did they replace the head gaskets that time or just spray some copper on them and reuse them? If they did that, then Id put my money on the shitty stockers giving out on you.
09-06-2009, 11:04 AM
#9
TECH Regular
iTrader: (14)
Join Date: Apr 2006
Location: 626 to the 818
Posts: 485
Likes: 0
Received 0 Likes
on
0 Posts
if your mixing coolant and oil it is going to be milky in color...sort of like a cafe mocha...lol
before ripping your car apart i would pressure check the cooling system...
kind of hard to do tests on an engine thats in pieces...
if in fact, your head gasket has lost its seal, you need to check the deck of the block and heads for straightness before putting them back on. or else it will happen again..
also, you need to address the issue of why it overheated and resolve it before putting any parts on, or the failure will repeat itself.
before ripping your car apart i would pressure check the cooling system...
kind of hard to do tests on an engine thats in pieces...
if in fact, your head gasket has lost its seal, you need to check the deck of the block and heads for straightness before putting them back on. or else it will happen again..
also, you need to address the issue of why it overheated and resolve it before putting any parts on, or the failure will repeat itself.
09-08-2009, 03:27 PM
#10
Well I did the coolant pressure test. I put the tester on the radiator opening and started the car, I didnt get any pressure readng until it reached 210*. It got up to 6 pounds of pressure for a minute or two and then slowly dropped to 0 pounds and then slowly rose again to 6 pounds.
09-08-2009, 07:35 PM
#12
TECH Enthusiast
iTrader: (6)
Join Date: Sep 2007
Location: Mo
Posts: 546
Likes: 0
Received 0 Likes
on
0 Posts
Well I did the coolant pressure test. I put the tester on the radiator opening and started the car, I didnt get any pressure readng until it reached 210*. It got up to 6 pounds of pressure for a minute or two and then slowly dropped to 0 pounds and then slowly rose again to 6 pounds.
09-08-2009, 08:40 PM
#13
What kind of pressure test is that? With the engine off put the pressure tester on the radiator, pump it up to 15-17 psi (check the psi on the cap) and let it set to see if the pressure bleeds off. If you have a blown gasket you can find it with a compression test also.
