Blew A Head Gasket Today

Chambers

Now you know
Sep 9, 2007
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Baltimore County, Maryland
Hi all, today I stopped by my fathers house this morning, I started to back down to the garage and my car started to spew white smoke and it was idling badly. I jumped out and checked the exhaust and popped the hood. The engine was rocking as if a miss was occurring, from the water inhibiting the spark. I then pulled back up to more level ground, the idle started to clear up, it wasn't as choppy as when pointing up the hill but was still evident. I drove it around and it almost completely cleared up, its was idling fine and no white smoke, but as soon as I point up hill it starts to act up. When I first started it earlier in the morning it was fine, and during the drive up there it was fine, no overheats, nothing. Also while it was acting up it was not overheating.

The car had been losing water for the past few weeks excessively, I had no idea because there was no evident leaks. Almost every day I check the oil and coolant level, and there was only one other occasion that made me think BHG, I was recently driving after picking up some AC components and I heard a loud tea kettle whistle, and noticed the temp was all the way up, as soon as I could I pulled over, I thought it was a BHG then, but turned out that there was no water in the radiator.

When I purchased the car it had a JDM engine installed and a MHG as well, I think that something was done incorrectly when the engine was installed, and it caused it to fail over time, or that recent overheating damaged something. I have put over 20,000 miles on it since I purchased it, and it has far outlasted it's original purchase price and expectations, so I'm not very angry, just at a loss.

Has anyone else had any problems with MHGs on a incline? lol.
 

webbs7mgte

New Member
Jun 2, 2008
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wisconsin
by chance do you know if hte block was decked or head was milled. and if the ra value of the head and block are close to the same. also if you tear it apart check if the timing casing was cut to the same as the deck.
 

Chambers

Now you know
Sep 9, 2007
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Baltimore County, Maryland
Unfortunately the kid I purchased it from didn't really give me much on the specs of the rebuild, but he did say the head was planed and a MHG was installed. He had receipts for everything so I leaned more towards believing him.
 

SWD Fredester 3

Supramania Contributor
Apr 25, 2008
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baltimore maryland
Chambers;1145174 said:
Unfortunately the kid I purchased it from didn't really give me much on the specs of the rebuild, but he did say the head was planed and a MHG was installed. He had receipts for everything so I leaned more towards believing him.
Hey Chambers, must be that time of year. Head just came off of mine today.
Call JE maybe they will do a two for one!
 

IJ.

Grumpy Old Man
Mar 30, 2005
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I come from a land down under
Coolant was low enough in the engine so on the flat it was below the gasket surface, soon as you got it on an incline the coolant would run towards that end up past the gasket and into the chamber burn and miss.

The Bad news with all this is running it at all with the coolant that low is enough to anneal (soften) the head and it's now scrap metal :(

Make sure it's tested for hardness before you spend a single cent repairing it.
 

arizzle

Lov'in the boost.
Nov 1, 2006
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burnaby, BC
Chambers;1145174 said:
Unfortunately the kid I purchased it from didn't really give me much on the specs of the rebuild, but he did say the head was planed and a MHG was installed. He had receipts for everything so I leaned more towards believing him.

looks like he got the head milled and deck but probably didnt properly clean the block properly. :aigo:

but now if you do plan on doing a BHG job now you can do it properly :icon_bigg
 

Chambers

Now you know
Sep 9, 2007
981
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Baltimore County, Maryland
SWD Fredester 3;1145190 said:
Hey Chambers, must be that time of year. Head just came off of mine today.
Call JE maybe they will do a two for one!

Hehe, must be! I may give them a call.

IJ.;1145208 said:
Coolant was low enough in the engine so on the flat it was below the gasket surface, soon as you got it on an incline the coolant would run towards that end up past the gasket and into the chamber burn and miss.

The Bad news with all this is running it at all with the coolant that low is enough to anneal (soften) the head and it's now scrap metal :(

Make sure it's tested for hardness before you spend a single cent repairing it.

Yea, I really hope I didn't hurt the head, but with the string of unfortunate luck I have been having lately I just don't know.

If I get my lowrider running then I can pull the head off the Supra and get it checked. Just another project stacked on to finish the first one, hehehe.

arizzle;1145210 said:
looks like he got the head milled and deck but probably didnt properly clean the block properly. :aigo:

but now if you do plan on doing a BHG job now you can do it properly :icon_bigg

Yea, I assume if the BHG was due to installation malpractice then it would go out like this.

I've checked my sources, if the head is good it will cost about $600 to get it done with a head rebuild and machine work without a MHG, not so bad though.

Thanks.
 

IJ.

Grumpy Old Man
Mar 30, 2005
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I come from a land down under
I'd drain what coolant is left and park it.

Danger is if you refill it and it sits without running the coolant will gravity feed into the chamber them leakdown past the rings into the pan and trash the bearings on the next start.