Ej257 build Flatirons Tuning has now assembled our most popular forged internal setups into ready-to-build kits. Explore race-proven EJ25, EJ257, and FA20 engines with forged internals—trusted by enthusiasts. The EJ257 features a horizontally opposed four-cylinder configuration, to help lower the center of gravity of the engine and Feb 13, 2015 · Welcome to the NASIOC. Apr 19, 2025 · Discover everything you need to know about the Subaru EJ257 engine. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Skim through the Subaru forums and you Jan 2, 2009 · Build EJ257 Built Motor DiscussionWelcome to the . In this video, Zach dives deep into what it really takes to Jan 29, 2025 · Engine - Turn in Concepts 2+2 Track EJ257 Closed Deck Short block, RCM 14mm Super Studs, JE FSR Pistons, Callies H Beam +2mm long rods OEM Crankshaft, ACL bearings Build Heads - Pocket port, Ferrea Competition Plus valves (standard size 36mm IN and 32mm EX), Ferrea Endurance titanium springs and retainers, GSC bronze guides, GSC S2 272 billet cams Ej257 Engine is available for sale and it is ready for delivery at your doorsteps. Dec 5, 2017 · There are two questions you should ask yourself before starting any build: how much horsepower do you want, and how long do you want it to last? Although Subaru’s famous EJ-powered WRX STI models exploded into popularity out of rally racing and other motorsports, the flat-four power plant is infamous for self-destructing when squeezed for more power. 5L EJ257 can make 300-400 horsepower in stock trim with some simple bolt-ons. Designed to elevate your driving experience, this short block is engineered by PREracing's experts, bringing together precision and power for your Subaru's EJ257 engine. It turns out that this is fairly simple to do, and that is what is now commonly referred to as a WRX Hybrid Swap Kit, putting 2. Feb 29, 2008 · ej257 build Jump to Latest 18K views 61 replies 9 participants last post by dalhedian Jan 28, 2009 V May 3, 2007 · EJ257 NA build complete! Jump to Latest 13K views 41 replies 20 participants last post by Patrick Olsen Aug 4, 2010 M We custom build quality short blocks for performance applications. Oct 13, 2012 · Re: EJ257 engine build/fix (would need advice) The goal is to build something with about 500-700hp (not whp) and something with good parts which last. Sep 10, 2020 · Subaru Engine Performance: EJ257, EJ207, and FA20 - Discover the Legendary Tuning Platforms and High-Power Potential. By joining our community, , you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Apr 25, 2020 · EJ257 build journal Factory 2. Registration is free Dec 31, 2012 · Subaru WRX EJ257 Engine build from scratch Newbies & FAQs Mar 3, 2010 · Exciting New Head Option for EJ205/EJ257 Hybrid Builds! Built Motor Discussion Oct 25, 2007 · EJ257 BUILD ADVISE - Piston Question Built Motor Discussion Searching for the right parts to build your EJ257 block? Look no further. List: Exhaust manifold. Oct 21, 2013 · EJ257/EJ205 Hybrid Build Built Motor DiscussionAll times are GMT -4. Long block engine only. We are thinking 300-350hp with a rev limit of 8k. 5TS-T Jump to Latest 11K views 11 replies 5 participants last post by rallyjiggz Mar 23, 2011 R Shop for high-quality on-road and off-road Subaru performance parts at Outfront Motorsports. These are USDM builds, but we can rebuild a supplied JDM core as well. If you would like more information about the parts choices in this kit, please take a look at our blog here These do not come assembled. Oct 6, 2020 · The newest addition to the Rallispec Street Spec series offers the best value for the money of any EJ257 built short block on the market. 2. We machine our blocks to the highest standards, and use the highest quality parts. 5RS Turbo Build. Our blueprinted blocks are machined on the crankshaft centerline, and our cylinders are honed using the torque plate process. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many Jul 1, 2021 · The 2. As much as I intended to build a more powerful and sturdy competition engine, my first aim was to build an engine that simply runs, and one that hopefully runs smooth. 0 liter WRX. Sidefeed, 850CC. Better oil pump. So Far I have : EJ257 Block Case EJ257 Forged Crank Eagle H-Beam Rods JE Forged Pistons ACL IAG Fire-Lock 2. 5 liter EJ257 or 2. Turbo Jan 31, 2020 · ej257 600+whp build? Built Motor DiscussionWelcome to the . Subaru EJ257 Crate Engines The Dual AVCS Subaru EJ255/7 Crate Engines are one of our most popular builds. Unlike the JDM STI’s 2-liter EJ207 engine, the EJ257 was designed for the USDM 2004 Impreza WRX STI. 5 liter block. Deposit: $850 (regularly $1,000) paid today is a security deposit which reserves your product and goes towards the cost of your build. See if you qualify at checkout. Tuning / Running Stand / SimTest We offer a few options at the moment for testing our engines before they ship across country. Jun 30, 2020 · The shop’s time attack car features this closed-deck EJ257 Subaru engine with nearly 700 hp to the wheels! $150 OFF Early Black Friday Special! 2008 - 2021 Subaru WRX STI OEM+ Long Block Package - starting at $3,750 (regular price $3,900) with a rebuildable core exchange. 5L Subaru Head Gaskets (1 Pair w/ Fire-Lock Rings) for EJ25 / EJ257, 100mm, . Each short block is assembled in the clean environment of their dedicated engine building room by a highly experienced technician. Built with 99. It is non-refundable. 75mm forged pistons, H-Beam connecting rods, STI crank, and new bearings. 75mm, square decked and soda blasted. Engine code fitments Mar 31, 2014 · ej257 build, main bearing oil clearance Built Motor Discussion Jan 23, 2025 · When it comes to choosing a Subaru engine for your vehicle or your next build, understanding the differences between the EJ255 vs EJ257 is essential. Based on the number of EJ257s that have obliterated the factory pistons, it’s easy to understand this belief. Front mount. . 0 liter heads on a 2. The intake manifold should be coming back from powder coating this week, and will be the next big piece to go on the block. Get up to 400HP with this better than stock build. The time now is 11:26 PM. 5L Turbo) Oct 15, 2020 · EJ257 with EJ253 SOHC Built Motor DiscussionWelcome to the NASIOC. It belongs to four- Description NEW Forged Subaru EJ257 Short Block 1,000 HP rated Build includes: New EJ257 case halves, Rated to 1000 BHP, V4 Closed Deck, Manley turbo tuff X pistons, Wiseco Boost Line Connecting Rods W/ ARP 625+ Bolts, King Performance Bearings, New OEM Subaru Nitride Treated STI Crankshaft, Machined for ½” head studs – ½ inch head studs included, Rear Covers, Rear Seal, and Pin Plugs Feb 13, 2011 · EJ257 Build: Chasing the 400whp mark (Questions inside) Built Motor Discussion What's In The Details At Subie Machine, our Crate Engines are built with quality in mind. Registration is free I built my EJ257 and IHI vf48 turbo for my clean title 2015 WRX STI! I bought this STI sight unseen from a Copart auction for $3,650. 0 Looking for EJ257 swap information: point me to the grail, pls! Will be doing a mild build on an EJ257 and swapping it into my Outback XT. “Commonly though, that’s just not for everybody,” he says. Mar 15, 2011 · ej251 / ej257 turbo hybrid build questions 2. $300 OFF Early Black Friday Special! 2004 - 2014 EJ255 Stage 1 Long Block Package starts at $5,600 (regular price $5,900) with a rebuildable core exchange. com Subaru forum. Head bolts. High resistance should be OK? Fuel pump. We found out that our 2002 WRX donor with a "built" hybrid motor was really a stock EJ257 block with stock EJ205 heads. I've built and tuned many WRX/STI's. Once a running engine was accomplished, my next aim was to drive with that engine, and without any leaks or failures. Nov 28, 2014 · Hi, I've been told by a friend that this site could assist me with my EJ257 build, I'm currently aiming for around 500-600hp, I'm starting with a blank EJ257 case and adding the following components: Brian crower pro 2. TURBO, STI ONLY 2008-2019. The Outback already has a Spec B swap, so just adding the 257 will give me (almost) a full Outback STi. Camshafts. SUBARU CYLINDER HEADS GO THROUGH A VIGOROUS CLEANING PROCESS AS WELL AS: VALVE GUIDES ARE CHECKED AND/OR REPLACED IF NEEDED 3-ANGLE VALVE JOB VALVE SEATS ARE We are hoping to get some opinions on our engine build plan. We offer the same quality machining in our DIY Short block kits Sep 8, 2017 · 2007 Sti EJ257 Advice needed for 400hp build Built Motor Discussion Jul 24, 2015 · 8| Subaru EJ257 Scoobie Power With A Rally Heritage… The Subaru EJ257 engine hails from a rally heritage that started when Subaru began competing in rally in 1980. 625BHP rating with our GCH Spec Forged Rods OR the H-TUFF Rod Upgrade, Forged Manley Race Pistons & Race Bearings. The crank, rods and pistons were all balanced to within a tenth of a gram. No accessories Engine code fitments:EJ255 Single AVCS Only (Please specify casting, eg: D25, W25 EJ257 Shortblock Wicked Performance Group EJ257 shortblocks are the solution for Subaru owners, enthusiasts and dedicated racers looking for a trouble-free engine designed and built specifically for their car. Shop Subaru short blocks built for power and reliability. 71L stroker kit, brian crower stage 3 280 Camshafts, garret gt3582r turbo You can find your local tuner & ask them to build you a car with a 6466 on ID 2600s and you might make 435whp on pump. This isn't the first time this has been done. However, when properly built, the EJ257 can be an excellent performer in a number of performance applications from street to circuit to strip. Timing the motor was super intimidating Let's go over the costs of building a Subaru EJ enginethe MotoIQ way! Mike and Martin go over the costs of our "Subaru EJ That Wont Blow Up" and a budget oriented build. 5 liter EJ255 block from one of these other cars into their 2. Air/Oil Separator Injectors. Why? the ignition timing is so low, you have little power. 5L STi Closed Deck Shortblock w/ Forged CP Pistons & Manley H-Beam Rods. All of our builds include all standard blue print machine work, and all new parts. 5L EJ257 W25 DUAL AVCS. Nov 30, 2023 · The EJ257’s build quality gives it the upper hand for more aggressive tuning options, while the EJ255 maintains robustness for those who prioritize longevity and everyday usability. The power is in Corn & Ignition Timing. 5L Turbo Powertrain (EJ Series Factory 2. PREracing Stage 2 Club Sport Build Kit EJ257 Upgrade your Subaru's heart with our meticulously crafted Stage 2? Club Sport? Short Block. Mar 17, 2025 · Discover the Subaru EJ257 2. Most likely Walbro 400l/ph? Cometic gasket set. Intercooler. CUSTOM BUILD. 5 L engine's specifications, common problems, and reliability insights for optimal performance. Learn its development, common issues, performance upgrades, and expert build strategies Mar 25, 2024 · Everyone & their cousin seem to be hocking built, closed-deck, EJ257 shortblocks capable of supporting 9900 RPM, 1200 bhp, guaranteed to gain all the cred at the local vaped-flavored parking lot. Great for WRX STI enthusiasts seeking a "drop-in" engine package. Jul 14, 2021 · The "Garage" feature is for images of YOUR VEHICLE/S only - no blanks or other unrelated images please, thanks So you want to build your own EJ257? (All Years) Jump to Latest 25K views 9 replies 3 participants last post by pigboat_2 Aug 19, 2021 Jan 28, 2020 · The bottom end for the build features an EJ257 semi-closed deck block that has been bored to 99. Current idea: EJ257 Block modifications: JE FSR pistons for 2. Get reliable, blueprint-assembled power for your build today! Jul 18, 2017 · I'm assuming you already have a factory assembled OEM ej257 shortblock? If so then I would call it assembling a long block rather than building an engine per say. You can take the same car to another proper Subaru tuner and make close to 600WHP+ on ID1700s with a significantly better outcome. We always replace certain fasteners, cam sprockets, timing covers, and other key details with OEM Subaru parts. No cheep economy builds here with lackluster quality. Aug 26, 2015 · I'm building an EJ257, what Subaru specialty tools do I actually need? Factory 2. WE NEED TO REBUILD YOUR HEADS, this is Not an exchange for a rebuilt head. Nov 13, 2009 · EJ257 vs EJ255 facts with pictures Built Motor Discussion Jan 18, 2019 · WRX owners immediately wanted to see if they could install a 2. Shop our selection of high-performance quality built EJ20, EJ25, and FA20 engines that fit your WRX, STI, BRZ, Legacy GT, or Forester XT. Registration is Oct 16, 2006 · Hi, I've been told by a friend that this site could assist me with my EJ257 build, I'm currently aiming for around 500-600hp, I'm starting with a blank EJ257 case and adding the following components: Jul 26, 2021 · Learn about common problems with Subaru's EJ257 engine in the WRX STI including engine internal failure, caused by performance upgrades. Featuring the legendary RalliSpec build quality with an affordable price tag. Contact us with any questions. Oct 20, 2016 · It’s been said that every factory-built EJ257 is a bomb with a lit fuse as soon as it rolls of the lot. Registration All things aside, I pressed on through this build with one primary goal: success. IAG's 550 Subaru EJ25 Long Block Packages are a valve cover to valve cover, crate engine. Subaru rebuilt EJ257 2. Features: Reconditioned Block Halves Closed Deck Process to Block Halves New EJ257 Nitrated Crankshaft New CP Forged Pistons New CP Rings New Manley H-Beam Forged Rods New King Race Bearings All New Hardware Rod Options: H-Tuff comes standard with 3/8" ARP 2000 bolts (affix an R6 suffix for ARP 625 May 12, 2020 · 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. But, when you start getting into substantially larger turbocharger systems, Anning has personally built 257s in the 800-horsepower range and above. We itemize the costs Sep 9, 2015 · New EJ257 350+ hp Motor Build. 051", for 14mm Head Studs Availability: Usually Ships in 24 to 72 Hours (3) $329. Many Questions! Built Motor Discussion Description Fully rebuilt Subaru cylinder head pair. First introduced in 2004 EJ257 is the one of the Engines. 99 Pay over time with Affirm. 5L Turbo) Pushing your Subaru WRX STI to 350 WHP on the EJ257 engine isn’t just about slapping on a few parts — it’s about doing it right. You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. Unequal. Discover the Crawford Built Subaru Short Block STI EJ257 (2004-2021), rated up to 770 HP. So, since we can't leave it with its current compression ratio, we are preparing to build the motor. Find IAG Performance completely built Long Block engines for your Subaru in the Long Blocks section of our website. We offer 4 stages of builds, for any application. These range from 2008-2015. Enhance your vehicle's performance today. SOLD AS SET. Once a successful drive was EJ257 Build Practical Engine Building Jump to Category: Discussion and questions related to the course Practical Engine Building = Resolved threads The IAG 750 Closed Deck Subaru EJ25 short block is capable of 750 BHP. Just check out the shop's own time attack car featuring this closed-deck EJ257 Subaru engine with nearly 700 hp to the wheels! Apr 3, 2011 · Ok, so im new to these forums as I mostly use NASIOC, but I've been building cars for 7 years now, I'm a SOA Master Tech, however this is my first 2. A solid weekend of wrenching got the block timed, thermostat housing installed, G30-660 turbocharger mocked up with the ETS rotated turbo kit and 38 mm external wastegate, and a lightweight crank pulley installed to seal the deal. Key Features: Jul 3, 2014 · Ej205/ej257 Hybrid Build Built Motor DiscussionWelcome to the . aev vlaa pyn gqu nuov fxj ldpnyt zdf orh hkut gueizi jkbmtj xlsm yfhzyo jfgee