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re: Toyota will not replace every Tundra/Lexus engine. Will rely on AI/software
Posted on 6/18/26 at 8:01 am to BHM
Posted on 6/18/26 at 8:01 am to BHM
quote:
Why are these manufactures all of a sudden having swarf issues? GM. Toyota, Honda and Hyundai all have major amounts of engine failures. Why a ll at the same time?
DEI hires.
0
Posted on 6/18/26 at 10:33 am to Them
quote:
2012 Tundra 4.6 with ~220,000 miles
quote:
other than regular basic maintenance,
quote:
no unexpected problems, ever.
If that "basic" maintenance hasn't included a timing belt/water pump/cam seal replacement job twice, you can expect that last sentence to change.
Posted on 6/18/26 at 11:53 am to s14suspense
quote:
Ford has been making a 3.5 V6 since what? 2013 without them eating their bearings
You really want to argue the reliability of the Ford 3.5?
Now the 2.7...yes.
Watched a full tear down of the Toyota 3.5 the other day on YouTube, it really really sucks that the engines had crap left in them, because the design of the engine itself was brilliant. Everything in the little motor is over built.
If you'd like to see, it was on Dave's garage.
Having said that, forgetting to properly clean the motor is insanity on their part.
Posted on 6/18/26 at 11:58 am to s14suspense
quote:
Ford has been making a 3.5 V6 since what? 2013 without them eating their bearings.
Honda has been making a 3.5 V-6 for decades with no issues.
Posted on 6/18/26 at 12:03 pm to Them
quote:My 2003 Sierra Z71 went to 160k when i gave it to my dad and he drove it to well over 250k before he got rid of it... nothing but basic maintenance.
My dad has a 2012 Tundra 4.6 with ~220,000 miles that has literally never needed anything other than regular basic maintenance, i.e. tires, brakes, suspension and batteries. No leaks, no check engine lights, no unexpected problems, ever.
I fear that no one will ever be able to make that same statement honestly about one of the new Tundras.
Had a 2008 Sierra I got rid of at 140k.... no problems...
and not my 2014 Raptor is like 140k on it with no issue at all...
I love the shite Toyota figs are getting thrown because they talk so much shite about others when realistically, every manufacturer has issues and sucesses.
Posted on 6/18/26 at 5:33 pm to Clames
quote:
If that "basic" maintenance hasn't included a timing belt/water pump/cam seal replacement job twice, you can expect that last sentence to change.
The 4.6 does not have a timing belt as it is based on the 5.7, which also does not have a timing belt.
Maybe you’ll get me next time.
Posted on 6/18/26 at 9:56 pm to Ace Midnight
quote:
quote:
Probably has more to do with bearing tolerances.
Combined with 0w oil.
Neither, but believe what you like.
Posted on 6/18/26 at 10:03 pm to Ace Midnight
quote:
It wasn't that long ago I would have said, "If anyone can figure this out, it's Toyota." With these failures, I'm not so sure. I bet the engineering is solid, though.
It is just the execution. It is proving very difficult to produce engines with such low tolerances at scale without some degree of mechanical failure. And I'm certain that over time they will not be as durable as older engines, say Toyota and Honda had developed over decades of outstanding engineering.
The core 3.5L V6 that Toyota then tweaked to put in almost everything for decades is a nearly indestructible engine. They had some 4-bangers like that as did Honda.
FTR, Toyota seldom launches new engines. When they do, they generally F it up just as bad as anyone else, and often worse, because they don't do it very often. Look at how long some of their prior gen engines were in production compared to other automakers.
They deliver mediocre to worst in class performance from their pure IC engine vehicles, including the Tundra and Tacoma, and have historically gotten by on reliability/durability AFTER they perfected a new engine for each. I won't go into a lengthy discourse on why they could launch fewer new engines than almost any automaker over the last 30 years, but suffice it to summarize that the regs forced the market to come to them.
Downvote away, but the facts are on my side.
Posted on 6/18/26 at 10:10 pm to BHM
quote:
Why all of a sudden we forgot how to clean engines before building. Do they all use the same supplier of a particular component that is causing this?
That's closer to the truth than you might realize. There are about 30 big companies that supply almost every part, regardless of automaker, worldwide ex-China. Even when operations like casting and machining are done in-house, you're down to just a handful of global suppliers and system integrators now for the machine tools and cleaning lines. This is because of consolidation worldwide that started in the 1990's and went into overdrive in 2008, then into orbit in 2020. Would not surprise me at all if all of the makes you list used the same supplier for the lines that finish the engine blocks.
DEI hires don't help either. I listened to an OEM engine engineer lament for an hour the other day how all the veteran guys who could have prevented or solved one of the currently more infamous recalls were either forced out or took voluntary retirement in the face of DEI-driven promotion and hiring practices over the past 15 years.
Posted on 6/19/26 at 6:33 am to Them
quote:
Maybe you’ll get me next time.
I'm struggling to think of a Toyota after 2009 with a timing belt ... It may not exist.
As for the engine, oil clearance for bearings is incredible close to the size of the debris in the engine.
.001 on this new 3.5
Posted on 6/19/26 at 6:43 am to Sharlo
quote:
Who keeps convincing automakers to bet on those damned things?
The same people that destroy everything good.
Progressives.
Posted on 6/19/26 at 6:51 am to jfan244888
Interesting. How, exactly, will AI check the condition of the bearing without physical examination?
Posted on 6/19/26 at 8:28 am to Sharlo
quote:
Toyota went full retard on these turbo V6s. They had the most badass, damn near indestructible V8 ever invented
Amen.
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