There is a chain of gas stations called Buc-ee's in my region of Texas that sells ethanol free gas at most of its stations. I plan on trying that as one of my options. There is a station very convenient to me on my commute I can use. I just need to make sure I time fill ups because it is halfway between my house and work.
The 1GR is a hypothetical option, I'm not aware of any running MK3 swaps with a 1GR-FE. I do know that 2GR-FSE has been swapped into Toyota Altezza (IS300) and Toyota Soarer (SC300) chassis in Japan, so I'd imagine the 1GR could work though the truck vs car accessories and manifolds and such may change that. So there's some 'pioneering' and figuring out to be done as to how difficult/time consuming it would be to swap effectively. The 1UZ-FE is definitely an easy and straightforward swap, and it does okay on mid-grade gas, but 86-87 octane makes it hate life and I can speak to that having owned an LS400 and SC400 in the past, and I put probably 70k miles on the LS400 in my ownership.If I ever have to do a complete engine replacement I am leaning toward the 1UZ. I found the guy in New Zealand who has done 20 of these swaps and he sent me a trove of info on it. I have already discussed it with my uncle/mechanic and after reading all the info he says it doesn't sound any worse than what we have already done rebuilding the 7M and replacing the A340. I kind of want to not spend money on the car right now given that I just replaced or rebuilt the entire drivetrain. I didn't know the 1GR was an option. I will look into that as well and appreciate you telling me about it. Next year I will start looking for all the parts needed for a swap and sending them to the shop as I find them. I am only 50 and expect to be at this company, doing this job, for at least another ten years. At 25,000 miles a year I harbor no illusions that this car is not going to need some major work at some point to keep going.
LS400 and GS400 1UZ's are front sump and definitely would not fit a MKIII without lots of changes to the steering etc. But an SC400 1UZ-FE has a rear sump oil pan and much more compact exhaust manifolds, and swapping one of those into a MKIII is very straightforward these days. Basically it's just engine mounts, wiring, and bolt the damn thing in, then finish the exhaust etc.Interesting thought, Wreckless. I've been running 89 octane since my 2nd BHG because the head lost a fair amount. My GE does knock mildly and briefly sometimes when I'm shifting quickly from high revs. I attribute it to the pokey ECU processor not being fast enough to keep up. My 3rd composite gasket died in 60k miles. Surely, the regular mild knock didn't help, but I still completely blame Toyota for a piece of crap gasket.
I will suggest a regular addition of Sta-Bil to keep the stupid ethanol from causing trouble.
And, I've seen a Supra with a 1UZ-FE and it was awesome. Talk about a lot of work, though, including a custom steering rack.
I am okay with mid-grade if required. I just don't spend extra if not needed. My $/mile analysis will be educational. It looks like the 4.0 from an SC400 is the way to go so I will start looking for one of those in the not so far future. He said ideally I want the motor, transmission and torque converter straight out of an SC if I can get it.So if you're open to running mid-grade as a minimum, the 1UZ-FE is a drop in proposition if you find an LS400 donor.
Actually I know the history pretty well. It's a one owner car (mine) and all stock. But back in the day, I could "point-and-pay" and didn't really pay that much attention to what the dealer did for repairs HG-wise. I'll recheck my receipts more closely.so many limitations on the head gasket and why they blow....
1. factory torque. but hey, its 2021....is there really a 7mge running on a factory HG ? (maybe)
2. unknown history. all it takes is one low coolant event and guess what....maybe you slightly warped it. or maybe it ran hot on one cylinder from a bad injector and heat annalled the exhaust side ....and crushed the head slightly (as in the quake thread on here). maybe the cat plugged and roasted her. who knows
3. its a straight 6. big long head. more prone to problems. like an open deck all aluminum 4cyl vs old school aluminum on iron.
I have been piss pounding a felpro "mls" multi layer aluminum foil with magic 3d printed on holograpic seals gasket. ARP studs, torqued down slowly step by step with someone with 5 mf synapses ... and viola....still holding 15-20 lbs boost on piggy back madness. I built this motor before I was married, 14 years ago, it sat for 8 years (magic assembly lube i tell you) and then I got motivated. so beating it for 6 years now. keep coolant and oil in the engine and the 7m will live. dont detonate with "horse piss" 87 fuel and she will live. RPM's and wide open throttle won't kill it, trust me I am trying