Blown Head Gasket repair w/pics

IHateHacks · 03-06-2007, 08:49 PM

1mm is the stock head gasket thickness.

Bead and Stopper gaskets are 2 different kind of HKS head gaskets. Stopper is much better than the bead, cheapest HKS stopper head gasket I've seen is $355 and its 2mm's in thickness.

Don't even bother buying a head gasket until you have the cylinder head off of the block. Because that will be the only time you will be able to determine IF your cylinder head and block are in proper condition to be able to use a Metal head gasket. I wasn't able to use a metal head gasket because of the pitting around the exhaust side's coolant passages at the #6 cylinder, which is, by the way, the most common area for the supra to blow the head gasket.

88Tsupra · 03-06-2007, 09:34 PM

was it the pix were ur head gasket lookd like oil was sitting there for along time...cuz when i changed my plug i notice i had oil in 5 and 6 buh the rest was ok buh then plug 5 and 6 lookd a lil burned..is that a sign..and if i just get a stock size HG will it still blow on me if its not a MHG..also i plan on building the motor up to plus around 400hp...its going to take me about A year or 2 to get it to 400hp because im just going to take it slow..so if i attempt to get 400hp the MHG is best right?

IHateHacks · 03-07-2007, 12:56 AM

Oil on top of the spark plugs has nothing to do with the electrode side (the part of the plug that is in the combustion chamber) or the head gasket.

"was it the pix were ur head gasket lookd like oil was sitting there for along time"

I have no idea what you are refering to.

"and if i just get a stock size HG will it still blow on me if its not a MHG"

It's not the gasket that fails it's the head bolts. They were undertorqued at the factory, causing them to strech. As long as you properly torque the head bolts it doesn't matter what gasket you use.

88Tsupra · 03-07-2007, 04:41 AM

thank you. im going to make sure its torque correctly after i go get me a torque wrench...sry buh how much ft/lbs should i re-torque it too

IHateHacks · 03-07-2007, 03:41 PM

That is a matter of opinion. ARP recommends 86 ft/lbs for their 12mm STUDS. ARP does NOT list a torque value for their 12mm BOLTS. And yes, torque values for studs and bolts are different. Factory specs are 58 ft/lbs which is too low, but I've heard (I can't confirm, maybe someone here has a link) that toyota reissued a new torque value for head bolts which is 72 ft/lbs. I personally torqued my ARP bolts to 70 ft/lbs. I'd say anywhere between 70 and 85 ft/lbs would be fine.

88Tsupra · 03-07-2007, 08:32 PM

ty i appreciate the help alot..now i just gotta ask my uncle to torque down the bolts cuz i dont know where they're at..thanx man u saved me a bhg

JMoses · 03-08-2007, 01:30 AM

Quote:

Originally Posted by IHateHacks

That is a matter of opinion. ARP recommends 86 ft/lbs for their 12mm STUDS. ARP does NOT list a torque value for their 12mm BOLTS. And yes, torque values for studs and bolts are different. Factory specs are 58 ft/lbs which is too low, but I've heard (I can't confirm, maybe someone here has a link) that toyota reissued a new torque value for head bolts which is 72 ft/lbs. I personally torqued my ARP bolts to 70 ft/lbs. I'd say anywhere between 70 and 85 ft/lbs would be fine.

The Haynes Manual calls for 85 ft lbs

IHateHacks · 03-08-2007, 06:10 PM

You better check your lupe.

Haynes manual calls for 58 ft/lbs. Do I need to post a picture?

I follow the TSRM anyway, not Haynes.

You might be dyslexic. 85--->58??

03-06-2007, 09:34 PM	#2
88Tsupra 12psi boost Join Date: Jan 2007 Location: long beach, CA Posts: 252	was it the pix were ur head gasket lookd like oil was sitting there for along time...cuz when i changed my plug i notice i had oil in 5 and 6 buh the rest was ok buh then plug 5 and 6 lookd a lil burned..is that a sign..and if i just get a stock size HG will it still blow on me if its not a MHG..also i plan on building the motor up to plus around 400hp...its going to take me about A year or 2 to get it to 400hp because im just going to take it slow..so if i attempt to get 400hp the MHG is best right? __________________ 88turbo targa-white original Pin Stripe custom intake-Tenzo filter.....Momo racing seats and steering wheel... apexi exhaust tip-custom 3" piping. Replaced with RSR GT II NGK plug and wires HID conversion head lights HKS Turbo Timer Type-1 (in black) Tial BOV BIC DDP Last edited by 88Tsupra; 03-06-2007 at 09:36 PM.

03-07-2007, 04:41 AM	#4
88Tsupra 12psi boost Join Date: Jan 2007 Location: long beach, CA Posts: 252	thank you. im going to make sure its torque correctly after i go get me a torque wrench...sry buh how much ft/lbs should i re-torque it too __________________ 88turbo targa-white original Pin Stripe custom intake-Tenzo filter.....Momo racing seats and steering wheel... apexi exhaust tip-custom 3" piping. Replaced with RSR GT II NGK plug and wires HID conversion head lights HKS Turbo Timer Type-1 (in black) Tial BOV BIC DDP Last edited by 88Tsupra; 03-07-2007 at 04:43 AM.

03-08-2007, 06:10 PM	#8
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	You better check your lupe. Haynes manual calls for 58 ft/lbs. Do I need to post a picture? I follow the TSRM anyway, not Haynes. You might be dyslexic. 85--->58?? Last edited by IHateHacks; 03-08-2007 at 06:40 PM.

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03-06-2007, 08:49 PM	#1
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	1mm is the stock head gasket thickness. Bead and Stopper gaskets are 2 different kind of HKS head gaskets. Stopper is much better than the bead, cheapest HKS stopper head gasket I've seen is $355 and its 2mm's in thickness. Don't even bother buying a head gasket until you have the cylinder head off of the block. Because that will be the only time you will be able to determine IF your cylinder head and block are in proper condition to be able to use a Metal head gasket. I wasn't able to use a metal head gasket because of the pitting around the exhaust side's coolant passages at the #6 cylinder, which is, by the way, the most common area for the supra to blow the head gasket.

03-07-2007, 12:56 AM	#3
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Oil on top of the spark plugs has nothing to do with the electrode side (the part of the plug that is in the combustion chamber) or the head gasket. "was it the pix were ur head gasket lookd like oil was sitting there for along time" I have no idea what you are refering to. "and if i just get a stock size HG will it still blow on me if its not a MHG" It's not the gasket that fails it's the head bolts. They were undertorqued at the factory, causing them to strech. As long as you properly torque the head bolts it doesn't matter what gasket you use.

03-07-2007, 03:41 PM	#5
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	That is a matter of opinion. ARP recommends 86 ft/lbs for their 12mm STUDS. ARP does NOT list a torque value for their 12mm BOLTS. And yes, torque values for studs and bolts are different. Factory specs are 58 ft/lbs which is too low, but I've heard (I can't confirm, maybe someone here has a link) that toyota reissued a new torque value for head bolts which is 72 ft/lbs. I personally torqued my ARP bolts to 70 ft/lbs. I'd say anywhere between 70 and 85 ft/lbs would be fine.

03-07-2007, 08:32 PM	#6
88Tsupra 12psi boost Join Date: Jan 2007 Location: long beach, CA Posts: 252	ty i appreciate the help alot..now i just gotta ask my uncle to torque down the bolts cuz i dont know where they're at..thanx man u saved me a bhg __________________ 88turbo targa-white original Pin Stripe custom intake-Tenzo filter.....Momo racing seats and steering wheel... apexi exhaust tip-custom 3" piping. Replaced with RSR GT II NGK plug and wires HID conversion head lights HKS Turbo Timer Type-1 (in black) Tial BOV BIC DDP