Subaru Engines Archives - Engine Builder Magazine
All-Billet Subaru EJ 2.5L Engine

This 2016 Subaru STi, which features an all-billet EJ 2.5L engine, was built to showcase what Kaiju Motorsports is capable of. Not only does it look great, but all expectation is that it performs well too. Check it out!

Kaiju Motorsports 2016 Subaru STi with a billet EJ 2.5L engine
Kaiju Motorsports’ All-Billet Subaru EJ 2.5L Engine

Hands down, this was one of the more eye-popping engine bays we saw during the 2023 PRI Show. The Kaiju Motorsports-built STi Subaru is a cool car in and of itself, but with an all-billet 2.5L EJ engine featuring titanium piping, this thing stopped you in your tracks and forced your head to turn. We

Stage X 2.35L Closed-Deck Subaru Engine

Justin Anning and his engine shop, Nemesis Performance, don’t do things people normally do. He does things differently, and nothing is more proof of that than his recent build of a 2.35L Subaru Stage X Closed-Deck engine for drag racing. Find out why Justin is calling this his biggest and baddest engine yet!

Rebuilding the Subaru WRX Engine

The WRX has been around for quite some time as Subaru’s flagship, four-door performance car. We took an in-depth look at the WRX engine architecture, the pros and cons of some of the engine variants for North America, and what it takes to build these engines up to handle serious horsepower.

Engine Builder Announces its 2020 Engine of the Year Winner

Engine Builder has announced its annual Engine of the Year for 2020 – a Twin-Turbo Flat Six EG33 Subaru engine – built by Joe Hanna of ASF Machine in Grand Junction, CO. For the fourth consecutive year, Engine Builder presented its Engine of the Year award, which stems from the Engine of the Week series,

Subaru EJ Engines

Of all the engines in the EJ series, two are clear standouts when it comes to rebuilding for performance applications – the EJ257 and EJ207.

Twin Turbo Flat Six EG33 Subaru Engine

We sit down with Joe Hanna of ASF Machine in Grand Junction, CO to discuss the build of his 1993 Impreza with a twin turbo flat six EG33 under the hood.

Twin Turbo Flat Six EG33 Subaru Engine

When a former friend and customer tried to steal this twin turbo flat six EG33 Subaru engine after he couldn’t afford to pay for the parts, ASF Machine took ownership of the build and it’s now in a 1993 Impreza sedan with goals of tackling Pike’s Peak. Find out what went into the build!

Closed-Deck EJ257 Subaru Engine

Transitioning from an array of performance import engine work to strictly Subaru engines, Renner Racing Development can deliver the full spectrum of engine performance from mild to wild. Just check out the shop’s own time attack car featuring this closed-deck EJ257 Subaru engine with nearly 700 hp to the wheels!

Naturally Aspirated Subaru EJ Engine

To Brandon Loveless, Subarus are the ultimate car and engine. His passion for Subarus led him to want to build a Subaru EJ engine for an Impreza RS2.5 coupe. The result was this naturally aspirated EJ with plenty of custom bells and whistles. Find out what went into the build.

King Racing’s Race Bearings for Subaru EZ30/EZ30D Engines

King is proud to be first-to-market with race bearings for Subaru EZ30/EZ30D engines. The new Subaru EZ30/EZ30D bearings are designed with all of King’s racing line features, including the pMax Black unique tri-metal structure.