Blown Head Gasket repair w/pics

IHateHacks · 04-05-2007, 01:33 AM

Not after I pulled it out on the rebuild and cleaned the shit out of it. Oh, it was wasted, but it looks brand new now with all new gaskets/sealing washers.

I thought after I replaced the HG and every other gasket attached to the cylinder head that it would fix the problem, but it acts EXACTLY the same as it did the day I bought it. It has no effect on the drivability, only cold starts, thats why I'm thinking the time switch, but you could be right, the cold start injector could be F'ed.

Theres no way to test the cold start injector on the 7MGTE (only the GE), so if I'm pulling it off to test it, I'm replacing it.

IHateHacks · 04-05-2007, 05:08 PM

Just found out that side view mirror glass is discontinued from the dealer. They had the balls to take my money and wait a day just so they can tell me that.

I was worried that the O2 didn't come with a new gasket, and for $170 it better. It did and I was happy.

Well seeing that my previous O2 had a yellow connector and this one has a grey (89+) I am assuming that my yellow one was the factory O2 sensor. Suppost to change those every 50K miles on a MK3 supra. I can't believe mine still worked with 120K on it.

Engine Coolant Temperature sensor looked ok. But first off, it didn't come with a new copper sealing washer (same part # as the turbo oil feed line washers, fuel rail feed line washers and CSI line to fuel rail washers) so I was pissed and had to reuse the old one, which worked out fine. And second with it fully installed and torqued the sensor was "upside down". Meaning the harness had to be 180 degrees to where it sat for 20 years, just to slide on the sensor. If anyone has every messed with their ECT they know that the harness is not flexible at all. But I made it happen, and it worked out just fine.

I did all of this so there would be no doubt about passing emissions (I'm up for it in May). I cleaned out the EGR passages during the rebuild so that is not going to be an issue either. Not to mention the improved gas mileage/performance I'm going to see. Then after I pass emissions, I'm buying a full 3" HKS exhaust (including HKS downpipe) with test pipe.

I'm going to replace the CSI time switch sometime this month so we'll see what happens.

IHateHacks · 04-06-2007, 04:59 PM

Well Dan, all I have to say is you are one crazy motherf*cker. That was the ride of my life. You have one fast supra my friend. I loved it when you started to get sideways in second gear. It was like, first you had traction until the turbo spooled and then it just got sideways. That is pissed. Not to mention the Spec NUR exhaust you got. Hands down probably the most pissed off supra in CT.

88Tsupra · 04-06-2007, 05:27 PM

hey Hack can you tell me if its your cold start injector thats making it idle like crap on cold weather when you get it. because mines idle like crap too when i start it on a cold weather

dannydavi · 04-06-2007, 07:57 PM

man that white supra looks great.. White is a good color on these cars, mine is an ice blueish, who's is the white one?

ddmcse · 04-06-2007, 10:01 PM

i drive that supra like Steve McQueen would -LOL

IHateHacks · 04-07-2007, 01:45 AM

The white one is mine.

You really scared the shit out of me Dan.

And we were talking today about supras and their head gaskets and how stout the 7M really is. Pretty much every stock supra head gasket is blown, EVERY single one. And yet the motors will continue to run 50K, 60K even 100K miles. So if you have a stock head gasket with stock bolts, you can bet your life that it is blown.

04-06-2007, 05:27 PM	#4
88Tsupra 12psi boost Join Date: Jan 2007 Location: long beach, CA Posts: 252	hey Hack can you tell me if its your cold start injector thats making it idle like crap on cold weather when you get it. because mines idle like crap too when i start it on a cold weather __________________ 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

04-06-2007, 07:57 PM	#5
dannydavi 12psi boost Join Date: Mar 2007 Location: Sacramento, Ca Posts: 373	man that white supra looks great.. White is a good color on these cars, mine is an ice blueish, who's is the white one? __________________ '86.5 Supra - A/T - N/A - JDM Useful Sites: ToyoDIY.com ToyotaPart.com MKIIITSRM

04-06-2007, 10:01 PM	#6
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	i drive that supra like Steve McQueen would -LOL __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

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04-05-2007, 01:33 AM	#1
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Not after I pulled it out on the rebuild and cleaned the shit out of it. Oh, it was wasted, but it looks brand new now with all new gaskets/sealing washers. I thought after I replaced the HG and every other gasket attached to the cylinder head that it would fix the problem, but it acts EXACTLY the same as it did the day I bought it. It has no effect on the drivability, only cold starts, thats why I'm thinking the time switch, but you could be right, the cold start injector could be F'ed. Theres no way to test the cold start injector on the 7MGTE (only the GE), so if I'm pulling it off to test it, I'm replacing it.

04-05-2007, 05:08 PM	#2
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Just found out that side view mirror glass is discontinued from the dealer. They had the balls to take my money and wait a day just so they can tell me that. I was worried that the O2 didn't come with a new gasket, and for $170 it better. It did and I was happy. Well seeing that my previous O2 had a yellow connector and this one has a grey (89+) I am assuming that my yellow one was the factory O2 sensor. Suppost to change those every 50K miles on a MK3 supra. I can't believe mine still worked with 120K on it. Engine Coolant Temperature sensor looked ok. But first off, it didn't come with a new copper sealing washer (same part # as the turbo oil feed line washers, fuel rail feed line washers and CSI line to fuel rail washers) so I was pissed and had to reuse the old one, which worked out fine. And second with it fully installed and torqued the sensor was "upside down". Meaning the harness had to be 180 degrees to where it sat for 20 years, just to slide on the sensor. If anyone has every messed with their ECT they know that the harness is not flexible at all. But I made it happen, and it worked out just fine. I did all of this so there would be no doubt about passing emissions (I'm up for it in May). I cleaned out the EGR passages during the rebuild so that is not going to be an issue either. Not to mention the improved gas mileage/performance I'm going to see. Then after I pass emissions, I'm buying a full 3" HKS exhaust (including HKS downpipe) with test pipe. I'm going to replace the CSI time switch sometime this month so we'll see what happens.

04-06-2007, 04:59 PM	#3
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Well Dan, all I have to say is you are one crazy motherf*cker. That was the ride of my life. You have one fast supra my friend. I loved it when you started to get sideways in second gear. It was like, first you had traction until the turbo spooled and then it just got sideways. That is pissed. Not to mention the Spec NUR exhaust you got. Hands down probably the most pissed off supra in CT.

04-07-2007, 01:45 AM	#7
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	The white one is mine. You really scared the shit out of me Dan. And we were talking today about supras and their head gaskets and how stout the 7M really is. Pretty much every stock supra head gasket is blown, EVERY single one. And yet the motors will continue to run 50K, 60K even 100K miles. So if you have a stock head gasket with stock bolts, you can bet your life that it is blown.