Is Toyota V35A-FTS Engine Reliable? Well..It's Not That Simple

Why was the GX550 named "550"? Plus the main bearing issue of Toyota's 3.4L (3.5L) twin turbo V6. A fair, comprehensive technical review of V35A-FTS, Toyota's new flagship engine for Land Cruiser 300, Tundra, Sequoia, LS500, LX600 and GX550.
Link to SAE paper for V35A-FTS:
www.sae.org/publications/tech...
Chris' KZbin Channel ‪@ChrisDianasJourney‬
Chris' Instagram / pearl.the.200
Support me by checking out the products I designed on tinkererdesign.com/
0:00 What GX"550" Stands For
1:37 Crazy High Torque
6:50 Over-Stressed?
12:18 Real World Reliability

[@TinkerersAdventure]

About 1 month after filming this video, (and 6 years after Chris replaced his first V35A-FTS with main bearing failure), Toyota FINALLY released something official with a safety recall on 5/30/2024. Root cause was machining debris as some of the internet comments correctly predicted. Check out the official recall here pressroom.toyota.com/toyota-recalls-certain-model-year-2022-2023-toyota-tundra-and-lexus-lx-vehicles/#

[@EMiVelociraptor]

Thanks for the follow up, great video.

[@Superdada]

Hey, Great video! Regarding this recall and the machining debris.... It would sound more believable if it was related to one supplier or manufacturer of parts, but it appears it's happened at both the USA plant in Texas and the Tahara plant in Japan. This seems more like a design issue than it does a manufacturing or assembly issue. And the fact that it's happened over many many years, even though the recall is for '22 and '23 models. What are your thoughts?

[@OverlandOutfitters]

@@Superdada If they use the same SOP's then the manufacturing location may not matter.

[@Superdada]

@@OverlandOutfitters true. But my hunch is there’s more to this story. “Machining debris” seems more like they weren’t following the SOP. And the fact that it happened at multiple locations seems odd. Unless we’re taking about particles the size of microns that’s getting undetected. Whether we’ll ever find out or not, I trust Toyota will make it right.

[@tommygoodman7047]

I’m trying to understand why the hybrid isn’t included. Or is it just a matter of time?

[@jubess]

bro bought a research paper. and talked to the man himself. subbed.

[@rharris1336]

Subbed. 👍

[@aquilophonix755]

have another upvote for the good ol' 269 number. Defiantly wish more so called "automotive journalists" did atleast half the research work this man does.

[@bigreddt73]

👨‍🔬

[@tentacionndlovu6343]

They won't admit that it's too much power

[@AwesomeBlackDude]

He should have talked to the drivers of those vehicles do a full in depth.

[@Shakshuka69]

Nobody makes these videos the way you do. Others do lots of speculation, but you do proper research and make it easy to digest too. And no fan boy bias! Very impressive.

[@AKBRONCOSFAN007]

I would say The Car Care Nut is another valuable source when it comes to Toyota/Lexus content.

[@spencerfelt2093]

@@AKBRONCOSFAN007love that man

[@luislongoria6621]

4:40 This must be it! Taller pistons have more mass, increasing torque

[@richardmcdaniel3818]

There’s plenty who do it, and do it better

[@charliecharlie9787]

11 mpg ... I will pass .😢

[@r8speed]

I’m a tech at a Toyota dealer in Canada and we’ve had 6 tundras with the same bearing issues. Some were work trucks and others were just daily drivers but they all failed in the exact same spot. All got short blocks and 2 of them were seized solid when they came in. One of them took so long the guy bought another tundra and then had the same issue with it so he bought a trd pro instead of waiting to get his first 2 fixed. We ended up buying the trucks back from him.

[@jonasbaine3538]

Wow 2 new trucks with same engine failure would push me away from the brand.

[@thegeneral1955]

@@jonasbaine3538New Toyota quality is terrible unfortunately.

[@COMMANDERFOX31]

Last month my friend who is a service manager at Toyota walked me through our dealership's parking lot while I was waiting for my Camry oil change and he also showed me multiple 2022+ Tundras with the exact same issues. There is clearly a reliability problem with Toyota's recent "environmental" decisions, I'm sure the Tundra is not the last vehicle to experience such issues.

[@DailyStreetRacing]

Bmw is the new toyota unfortunately!! 😢

[@user-yw8dj7cf1d]

engine is built tight and not enough space ford has abit more space and uses thicker oil while toyota uses mosy 0w20 oil or 5w30 for my ecoboost i use 5w40 and it works great make sure to do oil changes on time if not using to much boost if so then need more reg oil changes if not the oil will become diluted quick and the bearing will suffer frm lack of oil and in toyotas case of being built tough isnt the issue its not informing ppl about how to maintain a tt vechile engine i would recomend which i do to all my customers use synthetic oil if engine needs it and if its tt always put abit thicker oil and always check the oil to see if it has vescosity or not so if you use synthetic and says 12k km you change after 8 to 9 k depending how much boost was used and even earlier if towing, these tt engines need lubrication at all times...just like in the bed the faster you work the the more wet you hope she gets or else dry is just rough. lmfao

[@Comedy337]

i am from Saudi Arabia, and here we have a lot of Lexus LS500s and land cruiser LC300s, and recently after one or two years we started to notes the increase of those specific turbo charged cars going to shops and dealers for this specific issue, and most of the shop owners are starting to tell the people to not buy these cars yet, one shop even reported having more than 30 vehicles come to hos shop for bearings issues, and started a new way of fixing by pulling the engine from the car without removing the hood to cut costs and save time.

[@syedmohammedhussain799]

Whats the most common problem in the lc300?

[@hmoood9218]

@@syedmohammedhussain799 same as lx600 or lx550 same engine = same issue dude

[@m7m502king1]

They pulling engine without removing the hood cuz the owner when he wants to sell it the poor bayer don’t know about the disaster happening in the engine bay or maybe the car had collision once بالعربي ربعنا مايفكون الكبوت عشان مايطيح سعر الموتر ولا احد يدري انه موضب من قبل وكلن وذمته والله رقيب حسيب شديد العقاب وهذي مشكلة في المكينة هذي الحمدلله اني لحقت على مديل ٢١ ثمانية سرندل وشريته كان اخر موتر عند معرض اليحيى

[@mnm989]

I'm from Saudi Arabia and yes we have the same problem, I just saw video of a workshop confirming he had more than 50 cars that he fixed between 22 and 23 with low mileage too I regret selling my landcruiser 2020😢

[@marwan-968]

أتفق معك وتوي بكتب نفس تعليقك، للاسف الموديل الجديد فوق ما ان سعره فلكي فقير بالتيكنولوجيا ومحركها لا يصلح للاستخدام الثقيل نفس الجيل السابق الي ما يختلف عليه اثنين.

[@alfred-hugogrunschloss4758]

As a tech - here is a "Hack" when it comes to research papers. I had the privilege of working as a technician on research expeditions to remote locations and made a few friends in the industry. Look up the person who wrote the paper - ask them for the paper, and they will happily send you their paper- which, in most cases, they are allowed to do. The grunt that wrote that SAE paper probably didn't see a cent of your purchase sooo they will probably enjoy receiving your ping from somebody who actually wants to discuss and converse about something that they spent so many hours on getting published. Not to mention the opinion of the person who wrote the paper. -Magic

[@TinkerersAdventure]

great point. i love it

[@viczvapo]

that's awesome.

[@luislongoria6621]

If you look at the oil capacity of these "new", smaller engines, it's an astonishing 7 quarts! Oil cools the engine and Trans-Am race cars from the '70s were known to run as much as 10 quarts for endurance racing

[@viczvapo]

@@luislongoria6621 I enjoy knowing about these details lol. Thanks for sharing.

[@user-he2ph9qj2d]

I will hit the like bottom for the reason you produced a quality video. However, remember the primary objective of the video--provide the complete answer to the problem. I am old school. I will wait to buy the smaller engine until Toyota truly discovers the problem.

[@cbh148]

I'm a mechanical engineer and I live in Huntsville, Alabama, and I know I've heard some of the old v8s and the new TT v6s are made here at the Toyota plant in town. I just google'd "V35-FTA Alabama" and one of the first results is a forum post mentioning that, *allegedly*, one of the shifts at the plant was not properly cleaning out the engine block oil passages for some length of time till they caught it and corrected them. This would cause metal shavings to still reside in the block, ultimately getting forced to the crankshaft main bearings once started, resulting in inconsistent and sometimes substantial wear & damage to the bearings once the engines get fired up. If that's true, then perhaps the root-cause does not lie within the engine's design. Food for thought.

[@ALMX5DP]

I think the LX600 is built in Japan. Not sure if engine assemblies are all built in the US then shipped but I initially imagined the overseas models to have engine plants closer by.

[@shiroihachimaru4559]

those are gx lx engine made in Japan. not the same crap out of our declining USA

[@shawnacevedo8842]

@@shiroihachimaru4559 right and they are having bearing problems as this video talks about

[@georgeburns7251]

@@shiroihachimaru4559 ha ha, so crap engines from Japan are better than USA engines that don’t have this problem? You are too funny. Let alone the ‘s’ word

[@snakehead5444]

@@georgeburns7251all the Japanese made Toyotas are more reliable than those made in Mexico and the US. Accept it already.

[@Miroslaw-rs8ip]

Man I’m happy that I bought the last V8 engine in my GX460 2023 model last year, I knew that there were going to be problems. I’m also an engineer who worked in automotive for several years.

[@Real_Natural]

Same here. ‘23 GX from a TT ecoboost with cam phaser rattle. I bailed. The GX was my exit vehicle. I’m done.

[@c.s.s.5326]

This was my introduction to your channel. Def got a sub and a like and a lifetime watcher man. Fantastic work without any apologies or excuses made for the subjects of the video and you made the videos about something, not all about you, which is the trap of most creators these days. Kudos!

[@YerBoyTroy]

Im simple man. I see tinker i click

[@AdamHillikerLikesRobots]

hahaha dude I was literally thinking this verbatim as I clicked. Appreciate you

[@Yihooni]

Same.

[@citizenpark2782]

Thought u we were gonna say something bout tinkling a dick 😂

[@richardmcdaniel3818]

Weak

[@aaron___6014]

Are you a robot? Why is this comment everywhere.

[@Mayan-_]

Men of culture we meet again

[@agorpb5871]

nipples=turbo. I see what you did.

[@sdericmonty]

o7

[@kayakuprising5914]

What? Did I miss boobs?

[@wesl.946]

Indeed we do.

[@ssalblowy]

wrong video 😆

[@salimrandall]

As an owner of a Nissan and Toyota V8 vehicle I appreciate this video. There is no replacement for displacement. High strung, stressed engines require frequent rebuilds and are for race cars.

[@CJColvin]

Agreed 100%

[@NobleOmnicide]

Makes me wonder how the reliability will be in these new 4 cylinder engines Toyota is going with in the new Tacomas and 4Runners.

[@dy7296]

Downsizing is basically the norm on all areas of the car market, which, in my opinion and probably yours too, is quite unfortunate because not all users would know how to maintain an turbo engines properly, such as change oil more frequently, always idle for 30 seconds before moving, don't lug the engine too much, etc.

[@bikeman1x11]

nissan 4.0 few issues

[@salimrandall]

@@bikeman1x11 Nissan 5.6 zero issues

[@BrownMInc]

This is the kind of technical insight I strive so hard to find, Im so glad I clicked this video! Keep them coming, Ill binge the channel soon enough

[@Alan-ju1ku]

You really made the most of your time with the chief engineer. I saw other videos interviewing him on the GX and noone was a prepared as you. Well done!

[@G5Hohn]

Undersquare geometry also generally works well for boosted engines. With better breathing efficiency, you don't need valves to be as big. Which means lighter valves that can have lighter springs and less contact stress on the cam, that kind of thing. With a smaller bore, you can have a smaller combustion chamber which can help produce the "high speed" combustion Koji mentioned. When they say "high speed" what they mean is that the burn is complete sooner after TDC. Which means that the effective expansion ratio is higher and you have more basic efficiency (think back to a LogP-V chart in your Thermo class). The high torque output doesn't necessarily mean a high peak cylinder pressure, it just means a high BMEP. So if toyota is finding a way to make higher *average* power stroke pressure while not spiking *peak* pressure, you can have both high torque as well as reliability.

[@georgeburns7251]

Great comment, thanks

[@TinkerersAdventure]

awesome info. thanks for sharing! yes, what you said concurs a lot with the paper.

[@moneyshifters]

Good explanation! Should be pinned. You explained everything I was thinking far more articulately than I could have ever.

[@luislongoria6621]

Under-square engines have a larger rotating mass, increasing torque through the gyroscope effect

[@dman900dl]

This is a big part of the “answer”. Efficient combustion leads to high MEAN effective pressure which is basically torque, for a given bore and stroke. The high BMEP at lower rpm combined with a longer stroke results in peak torque at lower rpm, which means dynamic stresses and wear due to higher average rpm, are lower. Modern materials and lubricants, and cooling systems, are much better too, so the mechanical parts of the engine can have good strength and durability even with high mean and peak pressures. Also, modern multi-speed transmissions allow engines to operate at lower rpm more of the time, again reducing wear. It is certainly complex but I do trust Toyota, even though I’m a Tacoma 2GR 3.5 V6 owner 😀

[@Neemzz]

Tinkers content is very impressive. I don’t know how you make the technical stuff so entertaining but you just do! Keep it up brother 🤝

[@FranzSarmiento17]

You explain things so well in a very easy to digest way, and the lengths you take to get information is very commendable. You earned a sub.

[@amar.mohamed]

The reason why I like your videos is how simple you keep it for the average viewer to understand and deep you go into topics! Very informative! Keep it up!

[@johnd830]

Some of the best technical automotive content on the internet right now. Keep it up. I hope you get the recognition you deserve.

[@stevewhite4392]

My new neighbor is a Toyota mechanic in a very large dealership in Dallas. I asked about the 3.4 failures and he showed me a picture of 8 blocks in crates sitting out back. He says it seems to average ~20,000 miles when they fail, although he has seen it as soon as 6,000. I think it's happening more than people realize.

[@matte8441]

I used to be a tech at Toyota up until June last year. The earliest I've seen one fail was 32 miles. The owner took it home on a friday and it failed over the weekend.

[@float_sam]

@@matte8441 your talking about a toyota or a cybertruck here?

[@matte8441]

@@float_sam The Tundra unfortunately.

[@CarlosZ34NSM]

It’s dirty blocks the engines are fine when they are clean. At lexus we aren’t having them fail at that high rate and the mileage is usually way higher.

[@gentlemanzackp6591]

​@@matte8441 remninds me of this cummins engine blowing a HOLE between cylinder 4 and 5. mileage was about 880 the reps said dont touch anything but put stuff in ziploc, drain fluids and send WHOLE engine back to manf for inspection. ford had 6.7 powerstroke blow up LEAVING car transport ramps. barely above 40 miles on odometer. new cars is time bomb. yeah idk

[@viczvapo]

I’ve only seen two of your videos, love them both. You are amazing, love the details, academic approach, and great questions. Keep it up.

[@ISMarco]

This is great, I'm glad you had a chance to have a conversation with such a key person

[@keithgallagher2810]

As we've come to expect, another fanatic video. Thank you so much for asking technical questions and politely probing for answers. Keep up the great work!

[@yooazz]

I live for these videos. The only KZbinr i watch content for from beginning to end every single time. Love the content .

[@roberthaferd6386]

This is an excellent, excellent video and reporting. You have a bright future in Toyota enthusiast viewer content! Clear, technical but not boring, informative and most of all objective!

[@cbh148]

Well done man, and shout out to Toshi. I praised his work in that vid you put up a month or so ago. Didn't realize what places I've seen him before. His background and credibility align with his astute execution in this job role.

[@2URLex]

You really do your research. Then going above and beyond by showing your work. Subbed.

[@audieo575]

Great technical presentation with real world application result. I cannot wait for the Rod Bearing update. Thank YOU!

[@zachb208]

Absolutely awesome video, thank you for the time, energy and effort to put this together.

[@Patrick-ze7wd]

Great content here. This is a pearl in the ocean of surface level reviews.

[@zee9276]

Loved your video. You went into finer details that rarely any other KZbinr bothers to go into. Subbed.

[@dominozonda]

Great video! I’m always amazed at how detailed your videos are, please continue the same way! There’re many many engines with the same problem from land cruisers in the middle east, some are even shown here in KZbin and I heard of many, so they are 100% confirmed You’ll definitely see more of these the next couple of years when GX buyers get up there in mileage

[@thinker2328]

Dude. This video was PHENOMENAL. Thank you for your hard work and for your deep dive on these topics!

[@overlandme]

Incredible stuff man... really appreciate the effort to bring such a video to KZbin... thanks 🙏

[@jebalunode]

Thanks for the video. Very enjoyable discussion. Probably will start paying more attention to the technical seminars where this papers are discussed and questioned by experts in detail.

[@ManBearPigCreative]

These are great videos, keep them coming.

[@Luckingsworth]

This is the kind of content I crave. Please keep it up, and dont lose yourself as you continue to get bigger!

[@HTV-2_Hypersonic_Glide_Vehicle]

Man I love when I get to learn the nitty gritty specifics of truck off road performance. 😊

[@calc2302]

this is some high quality content. I really enjoyed watching the entire video.

[@atomicsmith]

This was an incredible video. Fantastic research and explanation. I would love to see more interviews with the engineers on vehicles like this!

[@2AToday]

This is the best automotive channel on KZbin.

[@taylorc2542]

I'd like to see something like HP per square inch of bearing surface. I'd trust that for longevity.

[@LK-bz9sk]

Agree

[@richardmcdaniel3818]

😂😂😂

[@tiny_the_200]

Larry Chen and Hagerty are giving us the shiny stuff we love, and you’re giving us the meat and potatoes we need 🤙🏼 Keep up the good work! (Great to hear from Chris too 👍🏼)

[@aron_1359]

Great job making this video. Everything was extremely in-depth and very easy to comprehend. Keep up the Great work! Let's see if we can get more exclusive content with Lexus/Toyota executives. I'll be looking forward to that.

[@absolutegtr]

Subscribed. Liked. And watched until the end. This is the kind of content we need more of!

[@jabba934]

Amazing video as always

[@jyo8914]

Awesome video and content! Very nicely explained. Keep it up. Looking forward to the follow up video on this.

[@smitty_schmitz]

Awesome video and super nice and shocked to see Chris! Awesome dude and both you and him were a wealth of information in this video.

[@kevindutton3676]

I bought my Tacoma in 23 because I don’t want to be part of Toyotas drivetrain experiment

[@ronfazer2423]

Beta tester: Big benefit to Toyota , big problem for you.

[@JollyGiant19]

Exactly. There’s a reason the name Land Cruiser means unreliable. Small displacement, turbo engines in the 80 series and prior were blowing regularly. It wasn’t until the V8 was created that they finally became good.

[@chrisflores4788]

​@@JollyGiant19What small displacement engines in the 80 Series? They're inline sixes that range in size from 4.0 to 4.5 and only diesels had turbos. All of these engines were, and still are, extremely reliable

[@Name-kd5jj]

I think the reason they called it the GX550 instead of the GX340 or 350 was because people would associate the smaller number with less. People would think well its a smaller engine and it has less power, even if it has more power. Its the same reason why Mercedes still calls the C63 the C63 instead of the C40. It used to have a 6.2 that they marketed as a 6.3 to pay tribute to the old 600 from the 60s and 70s. Off topic but the point is that it had a "6.3" so they called it the C63. Then they replaced it with the 4.0 twin turbo and still called it the C63. If they had called it the C40 people would have thought it was less than the car that it replaced. Most people don't know anything about engines so they think if its smaller it must be worse. So they give it bigger number to help with sales.

[@DeuceDeuceBravo]

💯 The "550" is pure marketing and the poor engineer was forced to rationalize it.

[@ClockworksOfGL]

BMW has been doing this for years. Once they started throwing turbos in everything, the number was repurposed to represent equivalent NA displacement performance. Yes, it’s dumb.

[@SuperCJification]

Absolutely drove me mad when Mercedes and others started to do the same, and don't get me started on Cadillac using some rounded approximation of what they think the kW or nm output of the engine in a given vehicle is....

[@Revenant7n]

One hundred percent. G35/350Z meant 3.5L, G37/370Z meant 3.7L, and then we went Q50, Q60, and Z because they went to a 3.0L.

[@daltonbedore8396]

yea, sadly we are surrounded by uncritical muppets and marketing teams feel like the need to appease them

[@free2chasehappy]

I love how you have an actual engineer who knows his stuff and being able to answer your questions. Most people just think because they work on cars that they know why an engine is designed that way. I have 8 years experience as a tech and 3 years experience as a mechanical engineer. I have nowhere near the knowledge this guy has.

[@captnjim44smith74]

You addressed the topics which have always interested me, thanks !

[@erics6947]

While some of your discussion may go over my head technically, I truly appreciate your research, explanation and how you present your findings. Very thorough, and it helps me to be a smarter consumer. Thank you! Subbed!

[@shadybeatsCarbon]

From what I have learned at Tundra forums, the failure seems to be from how they wash the crankshaft after being machined. Previous crankshafts would go through two wash cycles and all metal shavings would be washed off, the new crankshafts for the 3.4 v6 seem to have still some metal shavings left behind inside the oil feed holes causing oil starvation for the connecting rod bearings and causing early failure. It seems they have increased the wash cycles to 3 or 4, it reduced the number of failures on the 2024 tundras but there still seems to be a few. I'm making an assumption here, but I guess the oil feed holes are narrower nowadays with the newer engines because of the thinner oil, to maintain oil pressure. Because of these narrower holes, a lot of the metal shaving from machining get stuck and don't come out as easily, leading to the current situation with the 3.4 v6.

[@jerrycooper2306]

To be honest that sounds a little fishy. If the issue was fewer washed, you would think more washes would fix it completely. Also, cleaning debris after machining is something that has existed since the advent of machining so it seems a little unlikely that this would have been an unforeseen problem for them. My speculation is the change in bearing material and obviously the entirely new platform is just going to have a few bugs to work out. Fortunately Toyota stand by their product and you can spin bearings from now until the end of time and they’ll probably just keep warranting them.

[@awesom6588]

This would make sense and explain why the failure is so inconsistent and happens so early. If the engine is overstressed or whatever you wouldn’t expect failures to happen till at least 60k miles, and very consistently, like with BMW V8’s

[@stevelemay4143]

This explanation would make more sense if there were only failures of tundras and not the Japanese models. Which I’ve seen are happening. Lx600

[@wrndlabs]

I think I have the answer: The problem is not the bearings themselve but the supporting material. The old engines used aluminium where the new ones uses cast iron. Aluminium can draw away the heat in the bearings much quicker than the cast iron. Thus bearing failure happens because of overheating. The specific heat capacity of aluminium is 900 J/kg°C vs only 460 J/kg°C for cast iron.

[@Rexmorgan687]

Get this comment higher! I had a similar thought when @17:32, he mentioned this material change. I was curious if the research paper addresses the difference in heat capacity of these materials and if modeling/testing could analyze the effects of cooling (or lack thereof) in the updated block. Sure, it can handle the increased torque output but at what relative temps and for how long?

[@miguel300ish]

i don't agree with you.. because the aluminum main caps main job is to stay in shape and not move as the crankshaft is rotating remember that bearing clearance is in the thousands having those supports just makes the main cap stronger . it has nothing to do with heat dissipation.

[@dialecticalmonist3405]

And of course they never tested these engines before selling them.

[@RedDog265]

Another brilliant report. Thank you.

[@D3IVIO7V]

"I'm a bit of a Scientist myself." Love your channel and how you cover the topics in depth. Keep it up!

[@ericochoa4271]

Its a good video. I will reserve judgment and see if toyota is able to iron out issues in these new powertrains in the coming years and see if they really are reliable.

[@RevolutionRoad]

Nothing beats a NA V8! I don't care what ANYBODY says! Toyota should have just kept their V8!

[@hugoglenn9741]

Don’t talk to Toyota. Talk to Biden and US CAFE standards

[@RevolutionRoad]

@@hugoglenn9741 What does Toyota have to do with the govt? This is a Toyota issue

[@bunzaroo]

@@RevolutionRoadGovernment mandated emissions and MPG standards. The V8 probably would not have made the cut

[@RevolutionRoad]

@@bunzaroo Nonsense! Other manufacturers are still making V8's. "Govt mandates" are not law! Those particular mandates were given only to those manufacturers that were given "incentives" aka bribe money. And if you think a turbo charged engine is going to improve emissions and mpg standards, you're fooling yourself!

[@CJColvin]

​@@RevolutionRoadExactly mate

[@jdjames997]

This video is fantastic. You’re addressing topics every Toyota guy is arguing about daily. Thanks for making it, Savage Geese also addresses technical designs, and I’d like to see your channel get there, you have a similar format-, keep making great content, we all appreciate it. Every Gen 3 Tundra owner is wondering if their truck will be reliable. I’m sure Lexus Gx owners are wondering the same, if they are enthusiasts. My wife’s older GX460 with the V8 was incredible, we all hope this new engine can live up to even 70% of the older V8’s reliability….

[@fixittony]

Great video. Really like the format.

[@wadewilson6628]

40 years as an automotive/diesel tech. To quote my favorite engineer "The more complicated the plumbing, the easier it is to stop up the drain." The only reason everyone is running a turbo these days is to try and eek out a few more mpg to get past fuel economy standards and to fool the customer into thinking they arent looking anything. Honestly, 95% of car buyers are ignorant and just hear turbo and in the head turbo=fast.

[@lexuslfa4739]

The only reason they are running turbo cars is because NA engine development peaked. They cannot get any more power out of those engines without increasing in size, or revving them higher, like Ferrari and their 6 ltr V12 since the Enzo has been making the same BHP per liter to this day up to the 6.5 V12 812 SF. Lamborghini with their 6.5 is making the same power as the Ferrari. So they needed an option out because it would be outrageous to start putting 7 liter engines in production cars, I understand there is a couple with above 6.5 liters but the larger the displacement the lazier the engine, and the more inefficient it becomes.

[@fns3159]

@@lexuslfa4739very interesting

[@thegeneral1955]

@@lexuslfa4739For non sports cars it’s mostly for mpg to meet EPA regulations. Even then the new tundra for example barely gets better mpg than the 5.7 in real world usage. If they just tweaked the 5.7 and mated it to a 8 or 10spd trans it’d likely get the same mpg.

[@richardmcdaniel3818]

95% of car buyers have no idea what a turbo is..

[@DanDan-tt6gv]

Most car buyers be like, “pretty car, high mpg, me buy!”

[@DartmouthOutingClub]

Just discovered this channel. As a scientist and professor with 6 degrees, I can’t tell you how thrilled I am to find a channel dedicated to taking such a deep, meticulous and well-researched dive into cars well beyond the generic, press release talking points most channels focus on. Well done, sir. 👏👏👏 Looking forward to exploring the rest of your video library!

[@NB-yn7dv]

It’s always a great day when one of your videos drops. Thanks for always posting great content that we can enjoy. I believe those engineers dodged your question about the new engine stress by claiming it is ok because the new engine makes power more efficiently. Power is power whether it is done getting 1mpg or 20mpg, it doesn’t matter. It is still the same amount of force traveling through each connecting rod to the crankshaft and ultimately to the main bearings. And when you pit those extreme forces against ultra-thin 0w-20 oil, it’s no wonder we are seeing main bearings perish.

[@winteriscoming8842]

Thank you very educated and very informative.Please keep us updated .And again great job

[@user-mh9hb6sb1w]

From a PE, if you ever get tired of KZbin, you have a future in engineering. (lol, just looked in your store and noted you're a mech engr)

[@ejohn420]

I work in this industry. Yes some of the engines are failing, particularly the no. 1 crank bearing but also sometimes the connecting rod bearing instead of the crank bearing. Seeing as this engine came out in 2018 it’s surprising to have so many failures for a brand known for reliability.

[@daltonbedore8396]

gx460 still the goat, then?

[@The_Fat_Turtle]

GM, Ford and Honda are all facing the same problems, speculated to be improperly cleaned blocks after sand casting, but I don't have enough actual evidence to say anything concrete about the causes.

[@stevieray1828]

Online forums probably makes this issue seem more prevalent than it really is. Dealership near me hasn't had any come in for this.

[@davemilewski2153]

⁠@@stevieray1828 Stop in at any Toyota store and see how many tundras are on the lot waiting for motors, wouldn’t roll the dice on the first couple years of production on this motor either. Currently shopping for a new, current generation 4runner before they switch to the turbo 4 on the 2025 for the same reasons

[@husshardan3511]

@@stevieray1828 but now Toyota has announced a recall.

[@ptazman101]

EXCELLENT, EXCELLENT, EXCELLENT video! I never comment usually, but you did an amazing job, and wow, got the top of the top people to interview with. my 2 cents!!

[@jeffroberts9116]

you do great videos an I appreciate at the work you put in to them

[@JaeyTarg]

Toyota’s reliability era is done.

[@Randolf_Wisenberg]

once they see the results they will bring back natural aspirated V6 and V8 and remove the turbos.

[@Skyline750]

I said this as soon as they decided to use turbos lol

[@Dimabuildingadventures]

lol you guys are funny I seen so many cohost from ford have easy 200k miles no issues and still going some into 300k

[@tv321123]

@@Randolf_Wisenberg They already saw the results. The engine is already 7 year old. It's been out since 2017 for MY2018 for the Lexus LS. And nope, no long term issues with them. And personally after tossing my NA Lexus due to electrical gremlins for a Audi, Holy crap I had no clue what I was missing. My 2020 Lexus really was 15 years behind.

[@nathsmitto8667]

It’s not just Toyota, it’s a common theme to decrease displacement and use turbocharging to add it back. They did it with the 300 series diesel also. It’s emissions regulations and fuel consumption behind this, it won’t go back to the way it was imo

[@Min4Mass]

Always a solid video. These motors are a huge concern of mine.

[@rob7385]

Why?

[@salexander05]

Liked and Subscribed before the second chapter. Great content!

[@Libertino]

Amazing research, great explanation. Subscribed!

[@Moon222]

Toyota has been having so many reliability issues for the past few years, now they're just like other car manufacturers. But their prices are still including the cost of the good reliability which doesn't actually exist anymore.

[@Thankyou_3]

There is no way, I will give up my naturally aspirated 1GRFE V6 engine. These are absolutely bulletproof and such a forgiving engines.

[@FranciscoHugoGarcia]

we want a 1grfe paired with a 10 or even 8 speed trans.....but never gonna happen..

[@BigAltimaEnergy719]

@@FranciscoHugoGarciaur better off keeping the 5-6 speed transmissions, I’ve heard those 8-10 speed tends to hunt for gears a lot

[@luislongoria6621]

​@@BigAltimaEnergy719this is actually an engineering work around for drowsy or distracted drivers. That's why cruise control will not hold a single gear for the posted limit

[@mrmacronvlogs2003]

@@FranciscoHugoGarciathe Lc300 comes with a 4.0 variant that carries the 4.0 1gr fe with the 10 speed transmission (2022- present Lc300) look it up

[@martinsimwaka4895]

I love 1GR it's the best for me too

[@marshie1337]

+sub, you are destined for youtube automotive greatness. excellent research, wow! could not believe you were just barely over 100k. keep it up man, the effort shows.

[@steamy7676]

Great to see the interview with the engineer

[@user-oe7pr5ww2m]

Twin turbo V6, less cylinders but more power and more complicated, it must be less reliable than simple non-turbo V8, no exception man, combustion efficiency is not affecting to mechanical durability, all moving parts are getting more stressed.....

[@Jrtowns1]

Sometimes it is just that simple. Of course they’re going to try to sell us on their newer stuff.

[@randallsmith7885]

Agree. Looks like a lubrication failure.

[@JaquenHauf]

The dealership I work at has had 2 tundras with main bearing issues below 15k. They were early model tundras. The wear was allegedly due to improper cleaning from the machine process

[@davidkafka2452]

Thank you for bringing actual experts in to talk about the engine.

[@scottleepeters]

You're always answering questions I didn't know I had. I learn a lot here! This channel is the reason I bought a 22 4runner trd pro with KDSS. I'm not sure yet if I want a new one, but I'm hopeful the reputation holds with this new engine. I want to buy a new Toyota in a few years. I'll probably have a go with the sequoia.

[@vipraz119]

There were 4 LX600 with the same issue in one of my local Lexus dealers as well. Sad to see these motors having so many teething issues 7yrs into its life cycle.

[@corvairlover]

The question I would ask is if government didn't force the reduction in displacement, would Toyota select the V6? I don't see any other factors in the decision to reduce displacement and go electric.

[@mikemike388]

As someone who’s been with Toyota for 10 years, this video was amazingly put together, informative, and answered so many questions I had about the V35. And you couldn’t have picked a better source!

[@rz920]

I am not a car guy, just a curious owner of an LX600. I finished the entire video, and it won my subscription. Keep up the great work.

[@Wxman9123]

A lot of people dont understand how far we've come in manufacturing technology such as metallurgy, tolerances, etc. Turbos aren't the boogeyman anymore. The only limiting factor at this point is people.

[@PonyFoot123]

Ill be waiting to hear from high mileage new gen toyota owners

[@DeuceDeuceBravo]

@@PonyFoot123 As long as you listen to the ones who change their oil. There are going to be a lot of people disappointed in their engine's longevity if they're changing oil at 10k miles.

[@PonyFoot123]

@@DeuceDeuceBravo for sure!!!

[@austenalgaier1122]

I was a 4g63 fan for years. I have daily driven 400whp cars/vans (eagle summit awd)with 16/18g turbo 4gs with over 240k miles. Turbo engines don’t automatically mean less reliable

[@jamesgullo8240]

@@PonyFoot123 You will, especially 4 cylinder Tacoma owners. They wont make it to 400K like the 1990's 4 cylinder Tacoma's did. Not even close.

[@RocketRaspeed]

These new toyota engines all run very thin oil for fuel efficieny and emissions reasons. This thin oil requires tighter bearing clearances. Tight bearing clearance in a high torque/L engine doesn't leave much room for error.

[@MeltingRubberZ28]

The theory that oil passages have changed due to oil viscosity has been disproven.

[@leethompson6940]

Fantastic video, thanks for your research.

[@BattleScar09]

This is a fabulous video, thanks for the insights!

[@kerplunk38880]

I can save everyone a lot of time. Yes, the engine is overstressed. Yes, it'll be mildly better than another company's engine. But it will not be as reliable as the Toyotas we all loved in the past. I would not buy one.

[@rags2rigsrevivingtheoldcru156]

I love my 40-year-old underpowered yet highly reliable 2H engine 😅

[@xtnuser5338]

That's silly. Judging based on torque per liter is silly. Engineering for high cylinder pressure is just making sure the block, heads, gaskets and rotating assembly can handle it. Most failures are NOT related to any of that, at least in OEM engines. Most of Toyota's reliability record comes from doing everything else well, like seals, valve timing systems, fuel systems, electrical systems, cooling systems, auxiliary systems like the air conditioning, etc. None of those things have anything to do with high cylinder pressures. At worst, they might require a more frequent service interval for the spark plugs. And besides, the average demand profile will be that most owners won't be calling for 100% torque more than 1% of the time anyway. Most of the engine hours will be spent well below 50% torque output. I'm not saying you're wrong. I'm just saying you can't make the call based only on max torque per liter. It borders on ridiculous, unless we're talking about real extremes like top fuel drag racing engines or high demand applications like aviation or marine use where they might be run at 90% throttle continuously for most of their life, and 140-lbft per liter in a soccer mom's SUV doesn't even begin to get close to either of those.

[@kerplunk38880]

@@xtnuser5338 I value your opinion and I disagree with it. Have a good day

[@cottagegymfun]

@@xtnuser5338 Great points Some people just don't understand there are many factors involved

[@---rg1gb]

💯

[@MultiDreamer1979]

4.7 all the way I own one and they are super reliable

[@CeeJay591]

Excellent post and explanation - subscribed

[@user-ig7pp7pr1f]

Thank you very much for the video! It would be cool if you had more interviews with engineers from different car manufacturers. Very interesting content.

[@toycam800]

I thought that was toshi. That guy is awesome!

[@purificator1004]

In Saudi Arabia the new landcruisers with the same engines are suffering serious issues including blownup engines....may be this engine configuration is working in other countries but in the GCC it is not working at all...

[@giovannixiong7155]

Man!! I was waiting on your next vid!

[@3644Darrell]

I have a 1996 Toyota T100 SR-5 extracab with the 3.4. Last model truck made in Japan. It's been the most reliable vehicle I have ever owned. I have taken care of it and it looks brand new. The guys at the Toyota dealership said it was the most preserved one of these they had ever seen and were taking pictures of it

[@TheSunBlaster]

Dont need to have a PHD to know that adding turbos decreases overall reliability.

[@Bill-sp8kb]

They could design the engine as if it were going to be used under full boost, 100% of the time.

[@APIOQM]

Would like to hear your thoughts on the T24A-FTS.

[@TRDTalk]

What a vid. Just subbed. Thank you!

[@tomb375]

AWESOME Research ! ! ! Excellent Video! Thank you.