Blown headgasket FTL! Options

[OOBE]

Well, it's been 4 and a half years since I rebuilt the engine and ever since, it has taken the abuse I've given it like a champ. High EGTs and 87 octane fuel was the order of the day. It took it like a man. Compression was perfect across the board, and everything else was good to go. Well, you know how they say that you shouldn't have sexy time in your car because it jinxes it? Well, I think that actually is true, because before breaking a piston the first time, my car was the place of some love encounters with my girlfriend, LOL. It can't be coincidence that it broke again after I disrespected it with my current girlfriend. Blown tires and some other things happened before, too.

Anyway, the last straw that broke the camel's back was a 15 PSI test run after tuning it with the eManage. We were gonna take it to the dyno to tune it at that boost level, so we needed to test if the engine would hold or if it would blow like a grenade. Too bad I forgot I had moose piss 91 octane watered fuel from a gas station I never go to, but I had to this time because I was running low. I thought I had Shell 93 and well, nothing made a sound. I nailed it from a dead stop, it just roasted tires with the 17s, put our heads against the headrest, and then coolant was all over the windshield when I let go the gas. Good times. The auto tranny is holding well. No signs of slippage or anything. I ordered a Cometic headgasket and should be here this week. This engine can sure take some punishment. I need to up the boost to see if a rod gives up before a piston. I need an excuse to install the Belfab rods and some other pistons I found.

[trd94]

good luck on 15psi , i got to 17psi once on 94 pump gas, and i had a coupler pop. i never blew a rod or a head gasket . but i never pushed it that hard again, at 17psi when a coupler pops it scrars the crap out of you . i realy did think i blew the motor. i did not ,and ran 12psi for the rest of my cars 7afte life ....... i never had any tranny issue what so ever either.

[OOBE]

good luck on 15psi , i got to 17psi once on 94 pump gas, and i had a coupler pop. i never blew a rod or a head gasket . but i never pushed it that hard again, at 17psi when a coupler pops it scrars the crap out of you . i realy did think i blew the motor. i did not ,and ran 12psi for the rest of my cars 7afte life ....... i never had any tranny issue what so ever either.

I overboosted to 18 PSI a few times and nothing happened. This engine is stronger than people thought years ago.

Yeah, when a coupler pops, it makes such a scandal. It happened to my Supra once...but contrary to the Celica which has a MAP sensor and keeps going, it hit an imaginary brickwall that almost made me eat the windshield. Scary stuff.

I got my new turbo today. It was pulled off my buddy's Celica. It's also a T3/T4 but it's bigger, so this will be more of an experiment. It'll probably be laggy but kick hard once it spools. That combined with my auto tranny will be an interesting thing to experience.

Thanks, normality78. Tomorrow I'll install the turbo. I'm lucky that the ehxuast manifold is also 4 bolt, so I don't have to take a trip to the muffler shop to swap downpipe flanges. What worries me is that this log style manifold puts the compressor close to the the alternator bracket. That's with my smaller TO4B and it only has like two inches of clearance, and my turbine housing is the long type so it makes it clear more. I'm thinking that this bigger turbo will not fit because of the bigger diameter compressor plus the exhaust manifold being the shorty type. I'll probably have to get another manifold. We'll see.