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1uz engine reliability issues reddit. And it would probably make it.
1uz engine reliability issues reddit. There’s room for whatever you want in there though. Feb 7, 2025 · Understanding the 1UZ Engine The 1UZ-FE engine is a legendary powerplant originating from Toyota, known for its robust performance and reliability. Certain things are weird too. As a result we got low-speed engine with Work at a hyundai/genesis dealer. Buick 3800 V6: an old dog of an engine but for good reason. As long as the timing belt has been paid attention to and the oil changed regularly, the 1990 has the heartiest version of the 1UZ you can find; — it is unlikely you’ll ever have a problem with the engine. Your modern engine is a co-conspirator in the problem. Is casted iron stronger for FI? XC90 Reliability - Exactly How Bad is it? Future depreciation on cpo/warranty xc90s appears to be massive. This is still my daily driver, and I travel in it, so I'm wanting a balance of horsepower and reliability, so I guess frankensteining the ECM may be my best bet. And why the LS is such a popular swap. I’ve read some things online, including in this sub about some of the issues with the new 2. If we are simply talking reliability, the Toyota 4. What is the most reliable Lexus engine? The 3rz is generally an excellent engine, although they could have piston slap issues when cold, it generally didn't make much difference. 0-liter V8 powerhouse‚ renowned for its smooth operation and reliability. The problem is you CANNOT find the 1UR-FE engine for the GX460 almost anywhere! Apparently, the first Feb 7, 2005 · 2UZFE is a casted Iron block and the 1 & 3 UZFE are aluminum. 0 V8 1UZ-FE engine. Mar 31, 2024 · The inception of the Lexus brand was carried by the 1UZ-FE engine: a smooth, yet powerful V8 powerplant engineered for maximum comfort and reliability. It was also recognized on Ward’s 10 Best Engines list from 1998 to 2002. 70K subscribers in the regularcarreviews community. 0L Engine? Is it good or bad? Read about Toyota 1UZ-FE 4. Full valve job and bored . Introduced in the early 1990s‚ it features a quad-cam‚ 32-valve design‚ producing between 250 to 290 horsepower depending on the model. A non-interference engine is just an engine that doesn't have much valve lift and leaves power on the table. Feb 20, 2025 · The 2AR-FE is a great choice for those who want a balance of efficiency, performance, and reliability in a modern Toyota engine. If this is a pre-VVTi engine, you should be good for up to 380-400hp without having to make other upgrades. It affects a swath of 90s Toyotas, but 1UZ powered cars (e. I’m pretty knowledgable about most issues that the EA888 inline-4 engines have that are used in both Volkswagen and Audi. It has one gear and a helluva torque curve. While others claim the Direction injection of the fancy 1UR-FSE Aug 18, 2023 · Hello all, I have a 1st gen 1uz I rebuilt that I recently swapped into my 1992 Toyota pickup and I am having some issues now keeping the engine running and not holding an idle. I have an aerospace engineering background but no formal training on cars. 277 subscribers in the 1uz community. For a 2006 GX470. Plus, boat engines do not run through gears like a car. We are one of the unlucky few with a thrown cylinder 1 piston that both a local shop and Toyota recommend engine replacement. The 1UZ is sometimes referred to as the million-mile engine, partly due to a 1UZ-FE-equipped Lexus LS400 that covered the mileage with few problems. During its production, Toyota tinkered with a couple of variants of the 3UZ-FE motor for their race engine platform. So the uz family of engines are well known for their longevity and reliability. I had one with cold piston slap that made it to 400k, it ran perfect otherwise. 204 votes, 208 comments. 0-liter V8 gasoline engine featured in Toyota and Lexus luxury and sports cars from 1989 to 2002, before being replaced by the 3UZ-FE engine. 8L inline 4, and the Mercedes Diesel engines. The Toyota UZ engine family is a gasoline [1] fueled 32-valve quad-camshaft V8 piston engine series used in Toyota's luxury offerings and sport utility vehicles. 7L Engine design and features, its the most common problems and relaibility. Apr 27, 2023 · In this article, we cover the famous Toyota 4. This is a great engine and the fact it was used in the GT500 series shows the Feb 3, 2016 · Toyota 2UZ-FE engine reliability, problems and repair In 1998 in the Toyota UZ series appeared 2UZ and replaced the 1FZ-FE. Apr 4, 2025 · Explore the cars that feature the 1UZ engine, its performance, reliability, and why it's a favorite among enthusiasts. You won't have a radiator like a car and will have to use the water to cool the engine which changes the engine block. Reduce power as much as possible while leaving the engine running and land at the nearest suitable airport. Have the drive train checked out by someone before you buy it. Other options would be any of the turbo 4 cylinder or n/a 6 cylinder engines gm, ford, or Chrysler has put in base model rwd cars in the last 15ish years. The replise indicated that 400hp reliably was pretty easy to acheive. As a result we got low-speed engine with Mar 23, 2015 · Hey lads. A couple days ago, u/CertainMost3239 made a post asking if LSA engines can make 700 hp reliably and that he had mostly only seen 400 hp ls engines. But its main disadvantage is that it can be deformed due to engine mass. TL;DR: All else being equal, will an Al block affect the longevity, durability, ad reliability of an engine? What is the 1UZ-FE 4. One annoying thing that's happening tho is the TPMS is bugging out. Oct 10, 2023 · The 3UZ-FE does have thinner cylinder walls, which poses problems for boosters, which is another reason that the 1UZ-FE is the preferred engine of choice for the classic car enthusiast. Feb 28, 2006 · 1uz-fe is areguably the most reliable production engine ever & is also used in both production boats, aircraft, and powerboat racing. No issues so far on my 2023 3. Lexus 1UZ-FE. However, as the years fly by other larger and more effecient engines over shadow the older 1uz-fe's in comparison. The 1uz is a bigger engine dimension size compared to the LS. 0d. A community for Land Cruiser enthusiasts. Like the title says, I’m curious how everyone’s new gen ranger is treating them. It'll only be as reliable as its been maintained, but as a physical engine they don't really have many failure points, they do like to leak oil though. It increased its reliability and durability. New engine is the one that’s been in the adventure since 2020. Feb 15, 2023 · The air then leaves the radiator at the rear into the engine bay (assuming your radiator is mounted out front and in front of your engine). Toyota 3UZ-FE 4. Below is a list of some of the best and worst Toyota engines based on reliability, design, and performance. Where I am baffled is some sources are saying for the 1UR-FE, 347hp and 460nm. It appeared in 1989 and intended for the largest models of Toyota and Lexus. If I would choose a car from Hyundai or Kia, it would have to be with this engine. 4L Triton has it, earlier 2v 4. Just make sure you get a car fax and check the maintenance history. The Celica is a great starter car for someone willing to put the work in, and if you need help in that regard you've come to the right place. the other years are aluminum. The engine has a reputation for running reliably even after covering high mileages, thanks in part to Toyota’s build quality and engineering. 1ZZs can run for 500,000 miles while burning oil like a diesel. Sep 8, 2023 · Which engine is better for a street build? Both engines can be great choices for a street build, but the 1UZ may be better suited for a daily driver due to its reliability and ease of maintenance. And on the new genesis we have had to only replace the 3. Perhaps it's just been another "Internet Truth" all this time. 1uzs are a mess of a design and if you try to start substituting aftermarket parts you'll run into problems. I really like the 4 cyl engines though. I am hoping to keep this car for a fair while, and considering the engine is already around 10 years old, I figured the 3uz would be beter in the long run. 0 1UZ is a superb, slick The Toyota 1UZ-FE 4. Dec 22, 2021 · Toyota UZ Tuning "Guide to tuning the Toyota 1UZ-FE 2UZ-FE & 3UZ-FE engine!" The Toyota UZ offer good returns when tuned and with the best upgrades like a remap, turbo upgrades and camshafts you will really enhance your driving enjoyment. Theres these two engine in the newer 2006+ Lexus GS460, and LS460, plus a few other models. Is this something to be worried about or is it blown out of Great engines with no issues. Includes expert reviews, model comparisons, durability features & more. Here are some reasons why it’s considered a good and reliable engine: LS engines (a 255KW LS2 for example) makes 255Kw, about 210 to the wheels, and for the same level of modification as a 150Kw 1UZ, you get 250Kwatw and an assload more torque. From the sleek rides to the behind-the-wheel experiences, this subreddit is your cozy corner to share stories, ask questions and connect with other Lexus lovers. This is a subreddit for fans of Regular Car Reviews on Youtube. 0-liter 1UZ-FE engine. I know that you need to build an engine once you reach the limits of stock internals but I'm wondering are they more reliable in the long term, since they used forged instead of cast parts? I'm talking about if you build a motor and keep it at stock levels or the same levels as FBO, will it last longer than the stock engine? Obviously they won't last forever if Nov 12, 2006 · Who on this forum has a 1ZZ-FE engine with 115k miles or greater? Other than higher oil consumption any other issues to report? Our '98 as 132k miles and has just the oil consumption issue others have reported Feb 3, 2016 · Toyota 1UZ-FE engine reliability, problems and repair The engine 1UZ is the founder of Toyota UZ (included 2UZ and 3UZ). i ran the engine and it didnt like running had zero compression on this head and water mixed with the oil, other side got a new headgasket too same brand has 160-170psi ive checked the straightness of the block and head and they are within spec, there are That's because both motors have been known to be extremely reliable, the 400 series V8 is one of the few road motors that legally can be put into an airplane. Which would be the best selection But even so, Iron blocks with an Al head can sometimes create headgasket issues, and as mentioned earlier Al blocks certain engines like the 1UZ and EJ22 don't seem to have been negatively affected in terms of their longevity. With a displacement of 4. For a long-lasting V8, the 1UZ-FE is the top choice. Feb 3, 2016 · Toyota 3UZ-FE engine specs, reliability and recommended engine oil. I was very closed to pulling the trigger on this vehicle, but after speaking to a couple of coworkers in the car business (ex mechanics) they said the Cadillacs, like the CT4 are notorious for electrical problems that are not covered by warranty and extremely expensive to fix. Production spanned 24 years, from 1989 to mid 2013, ending with the final production of the 3UZ-FE-powered Toyota Crown Majesta I-FOUR. . 8t motor once because the owner accidentally put diesel into it. They are definitely the best 4 cylinders made by them and mated with hybrid systems, very peppy and fuel efficient. Also any F or FZ series six. Until 2007 it has the m47, after 2007 to 2010 it has the n47, which i've heard is a bad engine. 0L Engine: Specifications and Reliability The 1UZ-FE, the first in the UZ engine series, was a 4. What is the 1UR-FE 4. I under weight is an issue. Learn how to fix these problems here. It's such a small motor it fits in almost anything. Unless the vibration is REALLY bad I Another discussion question: What do you guys think are some of the most durable engines ever made. The 1uz is one of the best engines to come from toyota and I will still say that is the most reliable setup butttttt finding one that has been taken care of properly so you don’t buy a lemon is hard to find. 43 votes, 80 comments. The 3UZ grown in displacement up to 4. By far the most common issue you're likely to run into is capacitor failure in the ECU. This is my take Looking into buying a used Soarer (SC300); Haven’t heard much about them as far as reliability but I know they are crazy modifiable cars, which I’m crazily interested in. ). My Toyota Soarer twin turbo on the other hand is tuned for E85 with 1000cc injectors and supporting modifications and if used regularly and the engine oil changed at appropriate intervals, gives me no problems. Has anyone had any reliability issues? Please state how long you've owned your BYD. This is a sub focused on the glorious 1UZ-FE V8 Engine designed by Toyota for use in the Toyota Soarer… This right here is exactly what people want to see when looking for reliability in these cars, people get 40k miles on them and say they're reliable, yeah id hope for something with less than 40k miles to be reliable. All they need is a timing belt done every 100k miles, and your regular oil changes and it'll run forever. 6L Modulars will eventually crack it's intake manifold at the coolant crossover, and even the Coyote (yes, it's a Modular) can sometimes suffer from low-mileage issues with its VCT system. The Best Toyota Engines UZ-FE Series 1UZ-FE, 2UZ-FE, 3UZ-FE These V8 engines are Mar 28, 2025 · Explore the best and worst Toyota engines, uncovering their performance, reliability, and real-world owner experiences. 6L Engine? Is it good or bad? Read about Toyota 1UR-FE 4. In contrast to the 1UZ and 3UZ, 2UZ-FE engine used cast iron cylinder block. Are the 2016-2018 xc90's really that unreliable and expensive to maintain? Are they going to cost $5-8k+ to keep on the road every year outside warranty? Jul 11, 2008 · Like Justin pointed out, he's not after getting the VVT to work, if I asume correct the lexus engine uses the oilfeed via the block for the whole head including the VVT, which is operated by a selonoid in the head itself like the 4age 20v. The most common actual engine failure is a burnt exhaust valve on a single cylinder. Only thing I'd maybe disagree with is that the 3S-GTE is an awesome performance engine but it's not a super reliable daily motor. Beware though, as your first car you're gonna hate getting 17mpg and having to buy premium only. Looking into buying a used Soarer (SC300); Haven’t heard much about them as far as reliability but I know they are crazy modifiable cars, which I’m crazily interested in. 5t as a whole, only time we replaced the engine was on a tucson. If I had to buy a 20+ year old used car to drive to the moon without so much as popping the hood for an inspection, it would be an LS400. I guess I just don't know what all goes into a 5vz swap vs a 1uz from a 22re to know how much more costly/difficult it is for the 1uz. So in general genesis engine problems are very minimal. Excited and nervous to get it in there! Nov 19, 2024 · The Best and Worst Toyota Engines Ever Made Toyota has produced a wide variety of engines, earning a reputation for durability and performance. You're gonna need to look for rust on the rear hatch and along the frame rails. Name any engine-problem & the 3v 5. Dec 8, 2022 · Toyota 2UZ-FE is a 4. They have proven to be reliable over the years even if some public do not like it because they are old school instead of turbo engjnes you find in today's newer cars To add, I have owned these 4 cars with nary an issue with the engine: 1993 SC300 (2JZ-GE) 2002 GS430 (3UZ-FE) 2011 IS250 (4GR-FSE) 2014 Putting the only car engine to be FAA certified because of its crazy reliability in a car that's known to have an engine that blow up. What are some that tend… The question is in the title. Also, I would try to stay away from anything with over 60k miles. Learn about 1UZ-FE reliability, performance, performance mods and more The most reliable Toyota engines include the 2JZ-GTE, known for its legendary durability and performance, the 1UZ-FE, a robust V8 praised for its smooth operation and longevity, and the 2AR-FE, a dependable four-cylinder engine used in many modern Toyotas for its balance of efficiency and reliability. I think once every few months this sub will run through all the "usual suspects" of reliable motors. The internals and block are so strong it's been taken to 1500hp in supras on stock internals. Personally I've had experience with the 2UZ from Toyota, the B230 Redblock from Volvo, and the 3800 from GM. But with 110k miles/180k km is a game changer and still saying that it's reliable and has had few issues is exactly what people are looking for when asking about reliability. I read it’s good aside from some issues with the autoblipper. 7L 3UR-FE, have become synonymous with So the uz family of engines are well known for their longevity and reliability. These engines have proven to be extremely reliable and with proper maintenance will last over 300,000 miles. With nothing but regular maintenance, they often go hundreds of thousands of miles. Both have common issues, both are relatively easy to fix, both have a lot of "how-to's" out there (forums, videos, etc. Can the 1UZ be turbocharged? Yes, the 1UZ can be turbocharged or supercharged with the right upgrades. Good evening, I have a BYD Atto 3 on order in a small, hot country with bad traffic and worse roads. They do "replacement" engines; and they vary by a TON of models and factors; like all other manufacturers. The owner says that it is sitting at around 360,000 miles. However, not all engines have been equally successful. This V8 engine, part of the UZ family, was first introduced in the early 1990s and quickly became a favorite among car enthusiasts and tuners alike. Discover the top 10 best car engines for long-term reliability. You'll 56 votes, 28 comments. How to increase the power of the 3UZ-FE: supercharger, turbo, twin turbo, etc. I’ve been considering both the Sonata and Santa Cruz, but if the engine is having all of these issues already, then I’m thinking about steering clear of these models. We would like to show you a description here but the site won’t allow us. But get everything, ecu, looms, igniters, coils, and leave it all standard. D 2006, war was beginning. I love the juxtaposition! Discover the top 10 best car engines for long-term reliability. A 4. [3] Toyota's UZ engine Oct 30, 2005 · The only problem I have with the 1uz comes from the reliability side of things. On the other hand I think there are more issue with the Genesis brand itself Mar 23, 2015 · Hey lads. The ninja 400 is sorta more reliable but only after you put a good chunk of change into it and do some engine work I wouldn’t say is suitable for beginners. g. Oct 20, 2016 · Reliability: The 1UZ-FE engine is renowned for its durability and reliability. I noticed lots car companies use casted iron block for FI application. And it would probably make it. Unless you are going for SERIOUS horsepower I do not think you have to worry about the 1UZ-FE lasting. to/41NUNil - Rod Bearing Set fo 1UZ-FE https://amzn. My personal favorite is the 2UZ-FE. 7L Engine? Is it good or bad? Read about Toyota 2UZ-FE 4. While the Toyota engine would bring that legendary reliability marinizing an engine is no simple matter. it's one of the best American engines ever built for its reliability, simplicity, and the fact that they're still running over a decade after the final ones were discontinued. This leaves you with a nasty vibration and 3/4 (or 5/6) of your total power. They also told me that maintenance this car is expensive as well. New comments cannot be posted and votes cannot be cast. It utilises a RPM sensor located behind the bottom crank pulley, with a distributor mounted on the front of each cylinder head, directly driven off a camshaft. 0L V6 used in the S4’s, and I’m hoping to get some good info from owners, mechanics, experts etc…. Auto owners looking for a robust engine will find that Toyota’s V8 offerings, such as the 1UZ-FE and 5. 3L Engine Specs, Problems, Reliability, Info The 3UZ-FE engine was first introduced in 2000 and was a result of the evolution of the 4. The 1UZ is effectively operated as 2 x 4 cylinder engines that are ganged together. Apr 14, 2024 · The Lexus V8 1UZ-FE engine is a remarkable piece of engineering that combines power, reliability, and smooth operation. Here are some reasons why it’s considered a good and reliable engine: 2GR-FSE vs 1UR-FSE – Reliability ???Doubt you need to be worried about any of these engines. Toyota has built many great engine designs for different purposes, but what is their greatest engine ever? The 2JZ-GTE is probably the engine most are familiar with and probably the most performance minded, but others like the 22RE and 2UZ-FE are incredible engines in their own ways as well. Feb 18, 2025 · The 1UZ-FE is known for its smooth and reliable performance, making it a popular choice for luxury and sports cars. Z30 Soarer, UCF10 LS400/Celsior) have the issue most frequently. 3 liters and it was packed with all current Toyota's systems and electronics, the same as in late 1UZ engines with VVTi. 2GR-FSE vs 1UR-FSE – Reliability ???Doubt you need to be worried about any of these engines. It's also easier to work on because it's pretty small for the engine bay. The only problem is the miles that it has on it. Im considering buying an used BMW X3 2. And as far as I'm aware, the 2JZ is a great engine capable of high horsepower down the road. It’s one of the only production car engines that the FAA deemed legal for aviation use. This pages aim is review and look at UZ tuning and report on the best upgrades. I'm quite perplexed at my findings. 3L. This subreddit is dedicated to a car that should still be, and the goal of preserving what was. 2jz-gte's have no such following, or OEM confidance in applications demanding such a high reliability rate. 0L (1UZ-FE)V8 I think tops the list as one of the most well engineered N/A V8 engines of all time. problem is the oilfeed from the block to the heads seems to differ in location in vvt heads vs non vvt heads. Honda K-series: can't afford an LS? Honda K-series is the way to go. Like accessories being on the transmission side of the engine. Which years tend to be the most reliable and which tend to be the least? I anticipate getting a Soarer that is a good daily-driver as well as being a car to add touches of modification. Read now! Feb 3, 2016 · Toyota 1UZ-FE engine reliability, problems and repair The engine 1UZ is the founder of Toyota UZ (included 2UZ and 3UZ). I often see car enthusiasts openly discuss great motors like the lsx series of engines, ford's 5. Great engine otherwise that offered tons of power and low amounts of complication when it came to building them in your own garage, LS engines are a cult classic entirely for this reason. If you are looking at a 16-18 model, you should be fine. A cam is 1/4 the price of a cam for a 1UZ, and then you are looking at 300Kw at the wheels. I know that you need to build an engine once you reach the limits of stock internals but I'm wondering are they more reliable in the long term, since they used forged instead of cast parts? I'm talking about if you build a motor and keep it at stock levels or the same levels as FBO, will it last longer than the stock engine? Obviously they won't last forever if The Toyota 1UZ engine is a 4. If you have an AMG with engine problems that's not covered by warranty, you're buying used. So there are some engines that people consider to be very reliable. The Toyota 1UZ-FE engine is highly regarded for its reliability and durability. 0 liters, it combines a smooth power delivery with impressive torque Mar 31, 2023 · The 1UZ-FE V8 4. It was regularly serviced by dealer prior to purchase. 0L Engine design and features, its the most common problems and relaibility. 3 sport prestige but I haven't driven it enough to give a real opinion. Out of warranty cars have a ~$15-25k advantage for only being 2-3 years older. The only ones that I know of off the top of my head are the 6. You really have to trust the buyer before getting almost a 30 year old car like that or you can have the worst owner experience. Jun 1, 2025 · When it comes to V8 engines, Toyota has carved out a reputation for reliability and durability that stands the test of time. Longevity of 1UZ-FE engine Hi all, I am currently thinking of picking up a 1990 LS400. Does anyone know if this is healthy sound on a 1uz engine? has 89k miles and it’s a 1992. Jul 20, 2006 · I've been a huge supporter and still am of the 1uz-fe engines for over 10 years now, and am still amazed today by how durable these little V8 engines I'm just an enthusiast who loves these cars, obsesses over keeping them on the road in good condition and does a lot of DIY. For example the Ford 2003 Cobra uses casted iron vs. After they sorted the piston ring issues, it became a very reliable engine. 2L GM V8s, the Toyota 1. 5L engine that Hyundai is starting to put into a lot of their vehicles. If you want to do something different, a Honda k series engine would be cool if you want a 4 cylinder with lots of room to upgrade. Mazda engineering is top notched and really focused on reliability. I like the idea of getting the 3UZ because out of all of them it has the most displacement/horse power. Honestly, if you avoid anything with the Theta II, you're unlikely to have a bad experience (mechanically). [2] Three variants have been produced: the 1UZ-FE, 2UZ-FE, and 3UZ-FE. A pilot can and should be able to limp to a controlled safe landing in this scenario. It manifests itself in poor engine running or not running at all. But I don’t know quite as much about the 3. A lot of the reliability issues were eliminated with the newer generation mini's. Google “million mile Lexus”. I'd also say the 4A-GE (any version) and 7A-FE are all time greats. However, the 1UZ is the legendary 900,000 mile engine that Matt Farrah has. The engine makes its power at 2700rpm which is important because any quicker would mean prop blades start breaking the sound barrier and require a reduction gear. 0 engine is a well-regarded engine that is known for its reliability, smooth operation, and impressive power output. 7 L V8 motor, constructed specifically for trucks and SUVs. TL;DR: All else being equal, will an Al block affect the longevity, durability, ad reliability of an engine? Jul 20, 2006 · I've been a huge supporter and still am of the 1uz-fe engines for over 10 years now, and am still amazed today by how durable these little V8 engines are. 230 votes, 63 comments. 0 to 4. to/3NebLCc - All-in-One OBDII Scanner https://amzn. We haven’t had much issues with the 2. Both of them gained reputation the one of the most reliable Toyota engines with huge motor potential. If you want the simplest 1uz swap possible (or to also turbo a stock motor), avoid OBD2 and get a first gen non vvti 1uz. Things like the pcv unit are a lot easier to service now. Any issues? Frustrations? Been a Toyota guy my whole life but looking for something different. Get an engine with a timing chain. Due to that, this motor gained great capacity, low-rev, and astonishing torque. Pretty much all of them except the N54 lack any major issues, although older models certainly do have issues with engine peripherals like water pumps, gaskets and cooling hoses. In other details, this motor has identical So I decided to swap it to 1UZ-FE (It has been done before) Now I cant decide which to go with first gen is 256hp/260 lb·ft obd1, second is 261hp/269 some obd1 some obd2 lb·ft and the 3rd gen the VVTi is 300 HP/310 lb·ft obd2. When I say big cube pistons I’m not kidding, one of the most popular and reliable engines is the 520 cubic inch injected opposed continental six cylinder (300hp). The mighty Celica reached the end of its reproductive cycle and its population began a gradual but ever increasing decline. I'm a bit concerned about parts and labour cost together with the durability of the Atto 3. This 4-liter engine replaced the old Toyota 5V. Soarers and 1UZ powered cars have a handful of known issues beyond typical maintenance, all with solutions. Besides that, issues relating to the DI fuel system may crop up, including injector, control unit, coil, and plug issues. It has a strong following in the automotive community and can be a good choice for those who are looking for a powerful and durable engine for their vehicle. Aug 20, 2021 · Engine reliability has to be considered in the context of the electronics that make them go down the road. But, what im really curious of , is if an LSA engine with overbuilt internals (high strength aluminium or titanium even) and overkill cooling can make 650 hp on takeoff and 520 The VVTi 1UZ has much thinner conrods than the previous versions of the engine. Also, the valves need to be kept adjusted or the exhaust valves can burn out. Transmissions issues are usually pretty obviously with clunky/overly hard shifting or slipping. You have to remember that these engines run huge boost, in the 15-19 psi range on the “603HP” engine, which means they run rich and therefore are hard on plugs. to/44fOuWz - Intake Gaskets for 1UZ-FE The Toyota 4. With its V8 configuration and impressive specifications, it has become a favorite among car enthusiasts and luxury car manufacturers. Jan 16, 2024 · The 3UZ-FE was first introduced back in 2000 in the Lexus LS 430 and GS 430 sedans. Is it true? Should i look at older models or where to look for problems with the n47? What is the 2UZ-FE 4. 283 votes, 599 comments. But, the 1uz will give you slightly more power out the gate as a NA build. What other engines are super reliable? Aside from the Theta II engines, Hyundai/Kia engines are on par with other comparable manufacturers for reliability and issues. In A. The 3UZ also came with all the latest electronics at the time. Feb 3, 2016 · Toyota 2UZ-FE engine reliability, problems and repair In 1998 in the Toyota UZ series appeared 2UZ and replaced the 1FZ-FE. May be covered under a TSB program… not sure. 6L Engine design and features, its the most common problems and relaibility. If your ECU fails or your VSC system is braking on one side of the vehicle and running you off the road there's little consolation in knowing that your head gasket is solid. 66K subscribers in the LandCruisers community. 20 over. ENGINE The most important items on the 1UZ engines are the timing belt and water pump. While 1UZ-FE and 3UZ-FE keep aluminum cylinder blocks, 2UZ gained cast iron, which is stronger and less expensive. hey guys ive got a 1uz vvti that had bent valves, i changed all 8 intake valves and put a new apex mls headgasket and new headbolts on. They have proven to be reliable over the years even if some public do not like it because they are old school instead of turbo engjnes you find in today's newer cars To add, I have owned these 4 cars with nary an issue with the engine: 1993 SC300 (2JZ-GE) 2002 GS430 (3UZ-FE) 2011 IS250 (4GR-FSE) 2014 Since 2016 there has hardly been reliability issues with Mazda's cars and engines. The engine was an evolution of the 1UZ-FE with the displacement punched out from 4. Jan 2, 2021 · Background issue - engine failure 1UR-FE: I have a 2010 GX460 with 134k miles that we purchased with 100k miles. For anyone who owns the CT4, how do you like it? Have you had any issues? Are you aware of any reliability issues? How expensive has maintenance been? Are there any features you wish you had? Thanks in advance Archived post. 0/302, the kseries, 4g63's… Feb 20, 2025 · The 1UZ engine is reliable but has common issues like oil leaks, timing belt wear, and ignition coil failure. 0 liter v8 that was so durable it's one of a handful of engines approved by the FAA for use in aircraft. That's the only thing I'd be worried about. The 1UZ is one of the most reliable engines on the plant. Mar 4, 2010 · I think many of us here, as well as from other 1UZ forums have always thought that all the non-VVTi UZ engines were non-interference, although, now that I've searched for it in Toyota's NCF publications, it's actually not mentioned one way or the other. Conclusion: The Best Toyota Engine? Choosing the most reliable Toyota engine depends on the intended use: For performance enthusiasts, the 2JZ-GTE is unbeatable. Check out this teardown of this Mazda engine, it has failed (,which is super rare to happen) but he goes in depth with the build quality and what they engineered into it to make it last. They are their most common engines and used worldwide, so they are very reliable and well-made. These engines are not just about raw power; they represent a blend of engineering excellence and practical application. https://amzn. I have purchased wiring instructions from gloverman and wired it up properly and for the time being have the engine hi everyone! I’m looking to get an ls400 tommorow and I’ve showed my close family a video and everyone says it has a tick/ lifter knock. When fitting electric fans you can sometimes get fooled which way they are blowing air; so it’s always a good idea to remove them and check the air flow direction. At the same time diameter of cylinders increased to 94 mm, used the crankshaft with a piston stroke of 84 mm. qblypkjqqhfnighrieipbenwxcmkbxvablaqiiopdyje