Revving Through History: The Story of Toyota's 4AGE Engine

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Please give me a title for this : In the golden age of Japanese automotive excellence, the 90s, Toyota solidified its position as a reliable car manufacturer and ventured into the world of performance cars. As carbureted engines gave way to electronic fuel injection, Toyota needed a successor to their flagship 2T-G engine, leading to the birth of the legendary 4AGE engine. From its initial release in 1983 to its iterations in motorsports and various models, the 4AGE engine remains a favorite among enthusiasts. Let's delve into the details of this iconic powerplant that has left an incredible mark on the racing scene, and car enthusiast alike.
So lets start at the beginning, When the 4AGE engine got released by Toyota the engine was one of the first Japanese mass-production DOHC, four-valve-per-cylinder engines on the market. Unlike its predecessor, the 2T-G, which utilized twin side-draft carburetors, the 4AGE incorporated electronic fuel injection. Toyota's engineers focused on maximizing performance and efficiency, leading to the engine's exceptional design.
Now the first-generation 4AGE found its home in the Toyota Corolla AE86, one of the most iconic Japanese cars of all time. And im sure you all recognize this car, if you don’t do I have the cartoon for you. Anyways unfortunately after the AE86 Toyota did something stupid, you see This was the last time the 4AGE engine powered a rear-wheel-drive vehicle, as subsequent Corolla models transitioned to a front-wheel-drive layout. The 4AGE-equipped AE86 gained immense popularity, partly due to its impressive power-to-weight ratio and legendary handling. And of course the fact that it played in important role in initial D also helped boost its popularity in recent years.
But there is actually a lot more to this engine. This engine is proper cool, and we will go deeper into all the small things that make it special. One of the things that make this engine so iconic is the sound, and To enhance the 4AGE's performance and sound, Toyota sought the expertise of Yamaha Motor Corporation in developing the engine's cylinder head. The collaboration between Toyota and Yamaha resulted in the distinctive induction noise that enthusiasts have come to love. And when Yamaha build something it always sounds insane I mean This same collaboration also played a role in creating the exhilarating exhaust note of the Lexus LFA's V10 engine. As time went on the 4AGE engine underwent several iterations, each with its own unique characteristics. The most powerful 16-valve version, nicknamed the "Red Top," featured a smaller intake port cross-section, eliminating the need for the T-VIS system we just talked about. Now this red top engine produced 128 hp and 105 lb-ft of torque, which doesn’t sound like a lot these days, but remember these little cars weight almost nothing, so it made for one fun little car.
Then Toyota did something cool and introduced a Supercharged version of the engine. This engine was, primarily featured in the first-generation AW11 Toyota MR2. With 145 hp and 140 lb-ft of torque, the supercharged variant provided a significant power boost compared to the naturally aspirated 16-valve version. Now the added supercharger made the 4AGZE engine cool, but you see the petrol heads wanted the engine for something else. You see the 4agze had stronger internals which could handle boost a lot better. Which meant that this engine was perfect to use for turbo conversions. Anyways enough about tuning there is one more iteration of the 4Age we have not covered yet. The silver top of the 90s. Now with the silvertop Toyota revamped the 4AGE engine's cylinder head, transitioning to a five-valve-per-cylinder configuration. The result was the "Twin Cam 20", which featured Toyota's Variable Valve Timing system (VVT) on the intake cam These mods increased the stock power out put to 160HP which really isn’t bad. But unfortunately this engine was only sold to the Japanese market so we never got them.

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