Blown Head Gasket repair w/pics

[IHateHacks]

I know I sound like a broken record, but I don't care. Took it back on 84 today and really beat the shit out of it. I kinda felt bad, but the way I look at it is, its like going to the doctor and getting poked and proded and stuck with a few needles to make sure your alright sure it hurts at first, but at least you know you aren't dying!

Its definately got more power, I was almost afraid to leave it at WOT. Gauge read 200. Got home and broke out my infrared thermometer and with the engine running and gauge reading close to 200 (probably like 197) my infrared thermometer never got above 190 when taking the reading on the water outlet housing and the thermostat housing. Then, sure enough, I shut it off and the gauge read a little below 190 (probably 187).

And Dan, April 6th is fine. You better bring your supra I don't wanna see that toyota truck (Just kidding!!)

Edit: Dan, is that you driving the car on the dyno? Or are you filming it? And 302rwhp!?! That thing is sick. Sounds pissed. Now I definitely HAVE to see this car in person.

[ddmcse]

the place won't let you drive it while on the dyno.
i did the dyno at bristol dyno but they moved to hartford

[IHateHacks]

Car has been running fine. I just ordered a new O2 ($170.60 retail, with my discount I paid $127) and ECT (73.30 retail, my price $59.31).

I've been having cold start problems ever since the first day I owned the car 2 years ago. On only cold start (car sitting over 12 hours) it would start good but idle like a piece of crap and stumble at like 400rpm, sometimes stalling, sometimes not. But it would always start and idle perfect on the second try. On warm start up it was perfect also. So I thought I'd replace the cold start injector time switch (I ohm tested my stock one and at 50F degrees ambient temperature it measured 37.5 ohms, well within spec)......$150 from the dealer!!!!!!!! My price would be $135, but still!!!!! That is unbelievable!!!!

[ddmcse]

the cold start injector could be wasted in black soot

[IHateHacks]

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]

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]

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]

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]

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]

i drive that supra like Steve McQueen would -LOL