When talking about the Lexus LS 400’s amazing quad-cam, 4.0-litre V8 engine, which produced a maximum of 250 horsepower and operated with a whispering stealth, there is only one place to begin.
The engine was constructed with a five-bearing crankshaft for optimal support and an aluminum block with cast iron cylinder liners for strength.
According to Lexus, the four camshafts made use of the four valves per cylinder, and lightweight aluminum cam followers were used as a first in the world to lessen the valvetrain’s inertia.
The engine was suspended on unique hydraulic-pneumatic mounts, which contributed to the engine’s smooth operation by machining the tolerances of all moving parts by up to 50%.
A new computer-controlled automatic gearbox with its own ECU that “spoke” to the engine’s ECU managed a split-second reduction in torque to enable a better, smoother gear shift. The drivetrain as a whole was innovative.
Additionally, to minimize vibration, the engine was gently tipped backwards to allow the propshaft to rest in a straight line.
With an optional computer-controlled air suspension setup that changed its responsiveness and ride height according on speed, load, and road surface, the suspension was an innovative double wishbone system.
Regarding the body, Lexus asserts that it was more rigid than any other modern luxury automobile, with welds that were 1.5 times stronger as a result of a novel laser welding method.
The double-skinned front and rear bulkheads were sound-deadening material, which Lexus welded into place as a global first to further enhance the tranquility of the inside.
New Optitron gauges with a three-dimensional light were installed inside the dashboard to lessen eye fatigue.
In This Article...
Is there a 1UZ on the LS 400?
The first generation Lexus LS 400/Toyota Celsior introduced the 4.0 L; 242.1 cu in (3,968 cc) all-alloy 1UZ-FE in 1989. The engine was gradually released across a number of different models in the Toyota/Lexus lineup. With a bore and stroke size of 87.5 mm and 82.5 mm, the engine is oversquare by design (3.44 in3.25 in). [2] With features like 6-bolt main bearings and belt-driven quad-camshafts, it has proven to be a powerful, dependable, and smooth engine. The timing/cam belt also powers the water pump. Steel is used in the construction of the crankshaft and connecting rods. Hypereutectic pistons are used.
One of the few road-going engines with FAA approval for use in aircraft is the FV2400-2TC variant.
Its standard, original trim produces 191 kW (256 horsepower; 260 PS) of power and 353 Nm of torque (260 lbft).
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With lighter connecting rods and pistons and an improved compression ratio to 10.4:1, the engine had a minor revision in 1995 and now produces a maximum of 195 kW (261 horsepower; 265 PS) at 5,400 rpm and 365 Nm (269 lbft) at 4,400 rpm.
With the introduction of Toyota’s VVT-i variable valve timing system in 1997 and an additional 10.5:1 compression ratio increase[2,] output and torque were increased to 216 kW (290 hp; 294 PS) at 5,900 rpm and 407 Nm (300 lbft) at 4,100 rpm. 224 kW (300 horsepower; 305 PS) at 6,000 rpm and 420 Nm (310 lbft) at 4,000 rpm were the output ratings for the GS400.
The Ward’s 10 Best Engines list for 1998 to 2000 included the 1UZ-FE.
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Is the Lexus LS400 quick?
The maximum speed of the Lexus LS 400 is 155 mph. Even though that’s a rather high speed, the vehicle has a more than strong engine that can reach 60 mph in just 7.5 seconds.
When you purchase a Lexus, you pay for both great performance and opulent extras. The LS 400 has a comfortable leather inside, a top-notch sound system, and requires little maintenance.
Depending on the model year you purchase, several features and performances may be available. The features of late 1990s and early 2000s models may not be up to pace because they were built to a different standard of luxury. However, more recent models could really blow you away.
If you want to purchase a Lexus LS 400, make sure to have adequate auto insurance to safeguard your financial commitment. Luckily, Jerry makes it quicker and simpler than ever to locate the lowest prices on the vehicle insurance you require.
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What automobiles have 1UZ engines?
The LS400, the Japanese competitor to the BMW 735i and Mercedes 420 SE at the time, used the 1UZ, a very innovative V8 engine for its day.
The 1UZ-FE was used in the following vehicles:
- Toyota GS400.
- LS400 Lexus.
- Toyota SC400.
- Aristo Toyota.
- Nissan Celsior.
- Ford Crown.
- Subaru Soarer.
Which Lexus is a 2JZ?
A 3.0 liter, six-cylinder engine known as the 2JZ-GE powers the Lexus IS300. Fans of the MkIV Supra ought to be acquainted with its engine code. Although it had a few internal tweaks and no turbos, the engine was fundamentally the same as the one in the Toyota Supra. An engine that, incidentally, the JDM Altezza never provided.
The Lexus IS300 produces 215 horsepower and 218 lb-ft less power than the Supra without turbos (alone). That is, at least, the stock production. Owners frequently install Supra turbos on their Lexus IS300s. According to Jalopnik, the 2JZ’s iconic status is directly related to how overbuilt it was. The Bubble Era, which gave the world the Skyline GT-R and Autozam AZ-1, came to a close at this time. According to Jalopnik, owners could theoretically triple the IS300’s output without any problems with the right tune.
Additionally, according to MT, there were the TRD-tuned Lexus IS300 L-Tuned versions. Stage I automobiles have a body kit, fog lamps, and an 8 horsepower stainless steel exhaust. New springs, bigger anti-roll bars, cast-aluminum wheels, and Michelin Pilot Sport tires are added to Stage II versions. They ride one lower as well. Additionally, a limited-slip rear differential was a choice.
What models of Lexus have a 2JZ?
Given the possibilities of the inline-six, it is not surprise that Alberth seemed to adore the 2JZ engine. The Lexus IS300 has a 2JZ engine as standard equipment, but it’s the naturally aspirated model, which has unique pistons and a unique head. Even more astonishing is Alberth’s continued use of the stock 2JZ GE head, despite Porting Solutions’ porting work on it.
As far as other high-horsepower 2JZ builds go, the majority of the other parts are very common. Similar to Alberth’s 204SX, which in his opinion, has a redesigned intake, a 105 mm throttle body, 12 injectors (two per cylinder), and an 86-85 Precision turbo, the IS300 had these features as well “appears to be the preferred turbo for this engine. In contrast to the Nissan, the IS300’s engine has been expanded to 3.2 liters. All of it is controlled by a Haltec Elite 2500 ECU. The crucial information is shown on a Haltec IC7 instrument cluster.
Alberth notes that it’s interesting that the Manley pistons and connecting rods are Honda-spec, not Toyota-spec. The entire configuration is beneficial to “A 4L80 automatic transmission with the option for manual changing at the steering wheel transmits more than 1,200 horsepower to all four wheels. Eventually, Alberth divulges certain performance data, such as the 2.89-second sprint from 60 to 130 mph (97 to 210 km/h).
The 1uz FE engine is reliable.
- How much horsepower can a 1UZFE support?
- How often should the oil be changed in a 1UZFE engine?
- Do I need to take any precautions after purchasing a 1UZFE engine?
- A. You shouldn’t be overly concerned about the durability of the 1UZFE engine because it has a high mileage. If you recently purchased the engine, you should check its internal condition. The oil rocker cover on a 1UZFE engine that has been properly maintained typically has a golden hue, but you should replace the oil right away if you discover it has gone dark black and sludge-like.
- A. A 1UZFE engine can easily survive over 200,000 miles, according to Consumer Reports. Although they only require routine maintenance, 1UZFE engines that have traveled more than twice that distance are still in good shape.
- A. An oil change for a 1UZFE engine is normally advised every 5,000 to 10,000 kilometers. With a 1UZFE engine, you definitely need to replace the oil more frequently than usual if you enjoy drifting or drag racing.
- A. A 1UZFE engine can produce between 256 and 300 horsepower when it leaves the factory, depending on the generation. The engine has been tweaked by racing aficionados to produce up to 800 horsepower, though.
- How trustworthy is the 1UZFE?
How much power is 1 uz?
Consider forced induction once you’re prepared to move past some minor modifications to increase horsepower. The fact that the 1UZFE is a naturally aspirated engine means two things.
First off, these engines may be given a lot of power additions. A turbocharger or supercharger can be added to one of the most recent 1UZFE engines together with accompanying upgrades to increase its factory-rated output of 290 horsepower to a highly dependable 400 horsepower.
But there is a condition. When adding this type of improvement to a conventional normally aspirated engine, you need to be cautious. A 1UZFE turbocharger or supercharger kit cannot be installed and used immediately.
Yes, you must tune it, but in order for your car to handle the additional torque and power, you also need to replace other parts. To assist keep everything in working order, think about changing the fuel pump, intakes, exhaust valves, and even the spark plugs.
Turbochargers
One of the most economical methods to give your 1UZFE a ton of horsepower is to install a turbocharger, and there are many different models to pick from.
First, if you’re an experienced fabricator, you could buy a 1UZFE turbo kit and put everything in yourself. However, you should be aware that depending on the kind of car you drive, a different kit will be required.
A kit for a 1989 Lexus LS400 is probably not going to work on a 2002 Toyota Crown. Make sure you know what you’re obtaining before making any purchases because it has more to do with the intake and exhaust piping than the engine.
As an alternative, you might drive your vehicle to a company that specializes in performance work and have them handle it. Although this is a more expensive choice, it greatly reduces your stress.
Finally, even though some twin-turbo kits are available for 1UZFEs, you must exercise caution while using them. These kits typically produce too much horsepower, which over time might harm your engine’s internals.
Superchargers
You could choose to use a supercharger instead of a turbocharger if your vehicle has a 1UZFE.
The 1UZFE supercharger kits are a little more expensive, but they’re an excellent method to maximize the engine’s power.
It’s not impossible to observe an increase in horsepower of up to 50% if you install a supercharger and all the supporting parts! The stock third generation 1UZFE may therefore produce close to 435 horsepower.
Which Lexus V8 engine is the best?
The 2UR-GSE V8 was only ever offered in a Lexus, even though it was officially made by Toyota as well. When the company started rolling out its ‘F’ series sports cars around the end of the early 2000s, beginning with the 2008 Lexus IS F, this 5.0L V8 was designed expressly to fulfil a high performance position at the brand.
After collaborating successfully with Yamaha to design the V10 engine used in the LFA supercar, Lexus once more looked to its neighbor to the south for the production of the 32-valve heads for the 2UR-GSE. When it was first made available in the IS F, the high-compression (11.8:1) V8 produced 416 horsepower and 371 lb-ft of torque. The same engine was used almost ten years later in the RC F coupe and the GS F mid-size sedan, where a compression bump added 51 more horsepower and a slightly smaller increase in torque. Even the 394 horsepower Lexus LS 600H full-size four-door used a hybrid V8.
The Lexus 2UR-GSE is now housed between the front fenders of the Lexus LC 500 coupe and convertible, where it produces 471 horsepower and 398 lb-ft of torque. It is the most powerful engine that Lexus has ever provided.