00 Add to cart. Fire-Lock – IAG Fire-Lock™ receiver groove machining, latest solution to prevent head gasket failure on high horsepower and high boost Subaru’s – *IAG Fire-Lock™ head gaskets required Our Custom Conversion Closed Deck Block (no core charge) 2. Don't even ask me how much I've spent building my 2. Another day, another engine build! Here's an up close look at a brand new closed deck EJ207 build for a customer's GC8, and comparison with the old block. The power is 165 hp. Each block is thoroughly inspected, before undergoing our intensive cleaning process, bringing the surface of the block back to life. 0L block makes a great upgrade for all WRX models. 0L open deck blocks. 5l closed deck short block for subaru wrx, sti, lgt, fxt - 750bhp iag 750 ej25 2. 0 if targeting in excess of 330kw/450hp at the wheels. Every short block is professionally assembled in Rallispec's dedicted engine building room by their in-house builder who has over 20 years of motorsport level Subaru Dec 9, 2023 · Before inflation was) to go closed deck. C design (8. Brand new STI EJ207/257 semi-closed deck engine block; Brand new STI EJ207/257 induction hardened and cross-drilled crankshaft; New Cosworth forged billet 2618 pistons with ADS L. 2:1 CR) New improved ADS low friction L. 5mm in our in-house Sunnen SV-30 computer controlled cylinder hone. This set the stage for a long series of debates about it, and basically gave the open deck a bad name. Subaru pick the best castings with the thickest cylinder walls possible and reinforced semi closed deck Nov 4, 2019 · i'm buying a WRX this week but unsure whether to go for the Hawkeye or Blobeye based on the engine, i have heard conflictin opinions on which is strongest. 5 Closed Deck EJ20 Includes: Case Halves – Converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 92.   Part Number Supersession: 10103AB070   [ Excluded from Shipping Specials ] Aug 24, 2017 · The only closed deck USDM turbo "EJ20" from a legacy was the 91'-94' EJ22T. Let's pay attention to turbocharged versions of the EJ22. The 2. Subaru youtEj engine closed decking Closed deck engine • bulbs ideasSubaru machining. I own a 2005 Wrx with Cobb intake/box/post maf, Perrin turbo inlet, Samco IC hoses, Cobb up, Cobb dp, Cobb AP stage2 93 oct. 2:1 compression ratio. Closed volvo decking hcrClosed vs semi vs open deck blocks Closed deck engine • bulbs ideasDeck ej25 gasket sti wrx cylinders supporting failures. IAG 950 Closed Deck EJ25 Short Block: Case Halves – Converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 92. Oem stock mains 7. Consider yourself very lucky if you have this block, as it is coveted by many, but I believe it came with SOHC (which are crappy for turbo) so it likely has different heads from another model. 0l hg work on the 2. I have a 06' WRX running on stock ECU with EJ207 heads. This motor is physically a bolt-in for all WRX and STI Possum Bourne Motorsport have designed and developed a CNC program to close deck EJ20 blocks. 5L reinforced aluminum block engine, with a semi-closed deck and 8. Used JDM Version 8 EJ207 For 2002-2007 Subaru WRX STI Item ID 8528 Model(s) WRX STi 2002-2007 (Cable Throttle) $ 4,995 USD Subaru WRX STi EJ207 Semi-Closed Deck Short Block Motor. Our machinists machine the assembled case halves in our Haas VF-4SS CNC mill to accept the IAG Closed Deck inserts, transforming the block into a solid deck. Feb 15, 2021 · What is confusing here is that it appears that the engine designation for the 2015+ STI is EJ20Y. 0 litre block makes a great upgrade for all WRX models. The short block is fitted with IAG Spec H-Beam forged connecting rods. This can be done on all EJ205, EJ207, EJ255 & EJ257 engine case halves. The EJ207 block is stronger than the EJ257 too. That said, the open deck 205 held tons of power back in the day (before the 2. My motor is from a grb Sti at minimum. 5ltr Nitrided Crankshaft; High Performance Main / Big End Bearings; RCM 14mm Stud Conversion; RCM Billet Oil Separator and Gudgeon Pin Covers; 2. Apr 15, 2015 · I would start with a 2. I'm not sure if we really have to worry too much about pulling the bore square? pic for ref. The crankshaft is supported by high performance STI main bearings Oct 22, 2020 · In addition, we will soon have the possibility of offering the closed deck conversion on Subaru ej205 and ej207 engines. Contents of this Factory assembled EJ207 shortblock kit are: S20C Semi Closed Deck Block Halves; STI Factory Forged Pistons; STI Conrods; Crankshaft; Main and Rod bearings; Oil cooler; 10mm Oil Pump EJ20 Closed Deck Block. 95" Compression ratio 8. Jan 13, 2009 · The EJ207 block is semi-closed deck, so its stronger than even a built 205. EJ25 Case Halves must use 99. Pistons - IAG-Spec JE FSR 99. From 2003, STI has VF37. What are the weaknesses of the 208 and what can we do to make Oct 6, 2020 · The "pro" closed deck version features additional reinforcement of the block bolt access holes utilizing threaded inserts to partially close off the holes after block assembly. 3L twin turbo 911 motor. The STI Ej207 Short factory Block has a semi-closed deck with forged rods and pistons for increased strength. None of it is forged like people claim. Fast shipping. 0mm offset forged pistons. This is used to turn a modern EJ20 or EJ25 into a closed-deck block. One caveat is that the thrust bearing is for sure different, but I'm looking into machining the #1 to accept the thrust bearing per modern Phase 2 blocks. 0 litre shortblock. 99. I Genuine Subaru Semi Closed Deck New Short Engine Block EJ207 10103AB470. Once again, sorry for the dumb question lol. Aug 15, 2012 · The semi-closed deck of the 207 is better. To identify a 9/99-9/2000 EJ207 wasted spark coil pack off center of manifold inlet under manifold red intake manifold Semi-Closed deck block Shim under Forged pistons Cast rods? 1998. Jul 19, 2024 · FS: (For Sale) Iag closed deck ej207 cosworth tial PL rotated kit COBB Perrin and more Engine/Power/Exhaust Jan 30, 2006 · The ej22t has a closed deck design whereas the ej207 has a semi-closed deck design. Feb 10, 2024 · But while the G10 featured an aluminum block and cylinder head, Subaru's Justy engine had a closed deck iron engine block. 5l closed deck short block for subaru wrx, sti, lgt, fxt - 750bhp $4,999. This closed deck block design has been proven to withstand extreme boost levels resulting in high cylinder pressures without the worry of cracking a sleeve. 35L. @LW_Black4 450whp is completely daily drivable it just depends on the quality of your build. Head gasket sealing is handled with the addition of an o-ring and 1/2″ head studs for additional compression of the head gasket. IAG 750 EJ25 Subaru Closed Deck Short Block For WRX, STI, LGT, FXT - 750BHP Availability: 750 & 750IH Usually Ships in 24 to 72 Hours Feb 23, 2014 · Starting another build. At that point, the EJ207 block isn't much better anyway. EJ207(v7) all internals are forged, better cams than EJ205, valves, springs, etc. At high power numbers the cylinders start to come out of shape or crack due to the stresses. The EJ22G is JDM engine based on EJ20K STI engine. 0L Turbo Powertrain (EJ Series Factory 2. ADS Phase 1. 5:1 or 9. 0 +_0. The IAG 750 short block builds off our IAG 550 block's strengths by adding our proprietary closed deck system. WRX STi Spec C Type RA has IHI VF34. Keep in mind the 207 has a semi closed deck, the material around the studs look to only minimally affect the bore; they dont directly contact the bore like a closed deck would. Possum Bourne Motorsport offers this Close-Decking service for NZD$1390+GST. O. Quickview. Aug 8, 2008 · the biggest difference is that the usdm is an open block where the jdm ej207 is a semi-closed deck block. Proven in cars that are either a daily or up to full out, purpose built race cars. They were introduced in 1989, intended to succeed the previous Subaru EA engine. Jun 24, 2012 · 205 - fully open deck block, pretty standard in every way 207-R - Fully closed deck like the EJ22T, has oil squirters to lube the cylinders. Closed deck designs give the cylinder walls more rigidity and support, increasing their strength and resistance to movement or distortion under high pressure and temperature conditions. 0L turbo engines and none in America, the Aussies were pushing massive boost through the 2. The coolant passages match up perfectly. The EJ207 short block is the factory fit option for the MY02-05 STI and will also suit 94-05 WRX and STI Jan 11, 2013 · The shortblock doesn't determine the rev limit; more so the heads/valvetrain. The increased "efficiency" of smaller displacement EJ207 is countered by the more aggressive factory gearing meaning the JDM cars were not any more efficient than the USDM cars both are awful. 2. Sep 22, 2013 · The main problem with replicating the response and torque of the rally teams is detonation. Apr 9, 2007 · EJ205 - Square dished piston, open deck EJ207 cast - dished piston with valve relief, semi-closed deck block EJ207 forged - dished piston with raised centre and valve relief, semi-closed deck block. This short block is standard equipment on the 2002-2005 Australian STI. Jan 31, 2012 · The reason I went with Ej207 ver 7 Spec C RA heads is because they are the best heads available for the ej22t closed deck block. Jan 16, 2016 · Why bother with the EJ207 then? There's a 2. E up to MY94-95 all depending. After some research, he sent his case halves to Outfront Motorsports to have their Closed Deck V3 Service performed on his block. In a nut shell. This motor is physically a bolt- Jul 21, 2023 · Volvo decking hcrDeck closed engine block ej207 1000 subaru genuine throughout semi short size Deck closed engine subaru conversion case aa performance projectClosed deck engine • bulbs ideas. 99 Free shipping With a closed deck block the stock sleeves are still in place eliminating all risk of dropping sleeves and pushing coolant that you have with a sleeved block. Jim : Our C2 performance 2. We're finally ready to release our long-awaited EJ20 engine program. As you add more horsepower, the engine will require more supporting mods. Apr 9, 2020 · Comparing the 2015 variants, the JDM EJ207 made 308ps (304bhp) and the USDM EJ257 made 305bhp. That`s when they stopped producing them with closed deck and piston squirters because WRC rules changed, and the cost of the blocks were to high, compared to what they needed for the For the GC Impreza WRX STi, the EJ207 had an open-deck design whereby the cylinder walls were attached to the block at three and nine o’clock positions. 2K views, 160 likes, 8 loves, 63 comments, 46 shares, Facebook Watch Videos from MRT Performance: Another day, another engine build! Here's an up close look at a brand new closed deck EJ207 build Dec 10, 2014 · v5/6 STi - open deck, forged pistons v7 STi - semi closed deck, forged pistons, forged rods if it were me, I'd rebuild the v5 STi block with v7+ EJ207/EJ257 rods ($100-150). That’s right, this is a brand new fully assembled Subaru STI EJ207 Semi Closed Deck Short Block so you can get back on the road. 0L semi-closed is overkill in most cases, but of course it doesn't hurt to have the added supports. This engine consists of the following parts: Seasoned EJ20 case halves; EJ20 Closed Deck Process Apr 18, 2014 · sleeve or closed deck Built Motor Discussion. 75mm pistons and EJ20 Case Halves must use 92. I want to say they suggested going closed deck either above that 450ish whp mark or when you start running in the higher boost pressures…which I think 30+ psi is what they were referring to (which normally get you past that 450 anyway) Aug 14, 2021 · Next is the EJ207, which was produced for the GC8 in UK, Japan, and Australia. Long & Short Blocks Closed Deck Genuine Subaru IAG - STi WRX Forester Levorg Liberty. cheers!Thumbs Up Ryan builds a fantastic motor. Always helping to answer all my questions before, during, and after the build. But it really depends on how much more work needs to be done. IMO sleeved is a step above closed deck. i am convinced tha the japanese are keeping all the goodies to themselves, come on share with us let us play please!!!!! Dec 31, 2016 · It used closed deck block and oil nozzles, low compression pistons (CR=8), two DOHC heads with two camshafts. com: Jun 7, 2016 · best path, is by far #3. Please contact us to organ It Uses identical cylinder heads and IHI RHF 5HB turbocharger [11] as a EJ20K STi but with a unique closed deck crank case. Deck closed engine block ej207 Brand New Genuine OEM 2 litre STI Ej207 Short Block 10103AB470 . Assemble closed deck short block Mar 15, 2014 · WRX Version 5/6/7 EJ205 Open deck block stamped R20 STI Version 5/6 EJ207 Open deck block stamped R20 STI Version 7 EJ207 Semi closed deck block stamped S20C STI Version 8 EJ207 Semi closed deck block stamped T20C STI Version 9 EJ207 Semi closed deck block stamped T20C STI Version 10 EJ207 Semi closed deck block stamped W20C Feb 2, 2018 · I'm using a v7 jdm sti ej207 intake setup, which I've modified to accomodate the wiring for exhuast avcs, it works really well, but again in hindsight I could have used the tgv deletes I got with the ej20x, and bolted a ej205 top manifold on and called it a day and saved a lot of money probably. Pistons – IAG-Spec JE FSR 92. This process is not only fantastic for high boost and Nitrous based engines but can be used on even standard EJ Series engines to help prevent head gasket Aug 3, 2023 · Supporting your cylindersThe closed deck subaru ej20, built for boost! Ej engine closed decking: stage 2Closed deck engine • decks ideas. This short block is a standard fitment for the Australian STi model vehicles from 2002-2005. There are no longer any new closed deck blocks available to buy. Bore closed deck engine block 9. From what i've read the cynlinder liners on the 2. Aug 23, 2022 · The EJ257 is a 2. Deck closed engine block ej207 1000 throughout genuine subaru semi short sizeVolvo closed decking . Sep 29, 2023 · Closed Deck Engine • Decks Ideas. This motor is physically a bolt-in for all WRX and STi models and EJ20 vehicles from 1992-2019 used with the corr Mar 3, 2021 · close-decking a block will not add any additional power, IIRC IAG closes the deck for like 800-1k (i could be wrong on that), however, they will need to completely disassemble your block to do the close decking. Ideal as replacement or upgrade for many EJ20 equipped vehicles. I would put the quality of the EJ207 internals/rotating assembly about the same or a little better then standard replacement parts people buy to "build" their 205's. /r/WRX is a place for Subaru fanatics to show off their rides, discuss modifications… May 25, 2015 · The EJ207 is completely different from the USDM EJ205 in virtually every way. The blocks are “semi-closed deck,” which means they have considerable strength. 2 It is semi-closed deck, since the GDB Rev A (V7) The latest EJ207 for Spec C models has a configuration of sleeve support that can be called better than semi-closed deck. SIMER Discussion starter Jan 21, 2013 · Here are some key selling points on the EJ207 - - Semi-Closed Deck - Forged Pistons - Forged Rods - Forged and Cross Drilled Crankshaft - Thicker Cylinder Walls ( if my memory serves me correctly, they are slightly thicker than the EJ25x variants ) - OEM 10mm Oil Pump - The Intake and Exhaust Ports on the heads are significantly larger The IAG 750 Short Block is designed to solve the majority of common problems which plague modified EJ20 engines, especially at higher horsepower levels. Jan 28, 2024 · Closed deck engine • decks ideas. How to build a closed deck engine l subi-performanceDeck closed engine block ej207 1000 throughout genuine subaru semi short size Volvo closed deckingSupporting your It is considered a 2. e. New Crankshaft 3. la plupart vont pour 7000$ +. 5 liters of displacement and use aluminum engine blocks and cylinder heads. Subaru WRX STi EJ207 Semi-Closed Deck Short Block Motor. Just check out the shop's own time attack car featuring this closed-deck EJ257 Subaru engine with nearly 700 hp to the wheels! Aug 13, 2015 · I'm curious how significant the bore deflection would be. ADS closed deck case halves are an essential starting point for any high performance engine build; you can utilise one of the strongest closed deck blocks available, and still assemble the engine with your own forged internal components. Is the 22t better? The wrc guys don't seem to need the closed deck, so I doubt any of us will need it either. 5l are thinner but it is a semi-closed deck, compared the the 2. 2L or what ever size is largest possible for that motor I have read plenty of threads on both sleeved and closed deck blocks not lasting and or dropping a sleeve. IAG 800 FA20 DIT Closed Deck Long Block Engine w/ IAG 800 Heads for 2015-21 Subaru WRX Availability: Usually Ships in 9 to 10 Weeks $16,999. “That’s not to say you can’t do it without this modification, but you’re really pushing the limits of everything at that level,” he admits. The EJ series is the mainstay of Subaru's engine line, with all engines of this series being 16-valve flat-4 horizontal, with configurations Aug 13, 2012 · The block for the Spec C is a thick casting, reinforced block, I call it a 3/4 closed deck. 2 block? IAG 750 Stage 2. EJ207: BEST OF THE BEST. 75mm 2618 Forged Pistons, Ring Set, . They each have 2. A freshly rebuild piece of history by AirShox EU Ltd. The EJ207 has an 8. For the GD Impreza WRX STi, however, a semi-closed deck design was used which had additional attachment points at the top and bottom of each cylinder liner (i. 0:1 compression ratio. Maybe a tad less for the open deck version of the 2l from that era. PBMS recommend moving to a closed deck 2. VAT £3,650. This motor is physically a bolt-in for all WRX and STi models The EJ207 engine for STI has its pistons (8:1 ratio) and turbocharger. The IAG 800 short block features our proprietary closed-deck cylinder support system to strengthen the OEM FA20 cylinder walls. Dec 12, 2002 · EJ207 short block Factory 2. $3500 IAG 1150 Closed deck shortblock pinned mains 14mm head studs arp case bolts new manley pistons new boostline i beams new oem crank new acl bearings $3500 IAG 750 closed Jun 28, 2019 · But rather than restarting with an EJ205-based build, Johnathan decided to take a different route: EJ207 engine swap from the JDM Version 7 Subaru WRX STi! What's so great about that engine? Out-of-the-box 8,000RPM+ redline, semi-closed deck block, AVCS intake camshafts, IHI VF30 turbocharger good for 300awhp+, and proven resilience to over Oct 21, 2013 · Tonnes de aftermarket et facilement modifiable, ceux qui font des moteurs subaru a grands HP utilisent les tetes du ej205 avec bloc ej22t closed-deck, super solide. The first generation also had sodium filled exhaust valves and an integrated intercooler sprayer for charge air cooling. From the factory, the EJ20G never revved to 8k but with my EJ207 heads, I rev it to the moon all the time rojectsti. Mar 21, 2014 · Hey guys, I am looking for advice, suggestions, recommendations etc about an Ej207 block ej205 head hybrid. May 15, 2017 · Now that I have driven both, I’d probably go with the EJ257 if I had to do it all over again. Aug 27, 2013 · Brief history of the EJ207 Begins in 99 with semi-closed deck and coil pack over manifold. Aug 8, 2016 · Umm I think the one with spark plugs are like pre 2002 models w/o avcs to my knowledge they all pretty much have the same heads thw t20 casings which were also used for the v8-9 ej207. 5 with EJ207 heads) I understood this combo sucks, and I miss the smoothness and revability of the smaller pistons Project motor: Bottom end: EJ207 block ARP studs Cosworth billet lightened 79mm crank Cosworth 8. 5900 Views 12 Replies 6 Participants Last post by WelDun1, May 6, 2013. item 5 iag 750 ej25 2. We take your engine and machine it to accept our Billet Alloy 6061 close deck plates. 400″ thick along with having all the necessary Jun 7, 2011 · v5 EJ207 Heads + closed deck EJ20g w/ v5 STi Pistons. After 2000kms on hybryd block (closed deck 2. The Subaru STI shortblock includes all new parts which include a new crankshaft, bearings, rods, pistons, oil pump, filter, oil cooler and main seals. Apr 18, 2019 · Ian had decided that he wanted to do a closed deck block. BC 272 cams or jus stick to sti cams cp pistons with eagle roads the rest of all necessary valve springs,bolts,studs please give me some advise as i dont wanna go the wrong way. How to tell if you have a closed deck EJ20G? Check Details. Book a CNC Close Deck modification with PBMS; Deliver stripped and cleaned block halves to PBMS; Fit block halves to machining fixture; Machine block for Closed Deck Plate; CNC machine Closed Deck Plate; Insert Closed Deck Plate Sep 19, 2005 · The EJ207 is a semi-closed deck block just like the EJ257, all STi's are semi-closed. EJ20 Closed Deck Block Halves (remanufactured) RCM / Arrow H Section Con Rod; RCM / Omega Pistons; 79mm 2. Nearly identical. If your really looking for those numbers get a EJ207 and sleeve/stroke it to a 2. May 15, 2013 · Closed decks are known to be troublesome in the cooling department. 0 litre short block. The billet material that reinforces the combustion area has been further optimized with our V4 closed deck block in the known problem areas making it a far superior product to any sleeved Jun 12, 2019 · Open and semi-closed deck blocks can be modified with a press in plate and CNC machining. And if I pop a ringland on the EJ207, I would try to go with a 2. Found in the JDM Impeza WRX STi, the Subaru EJ207 engine features 8:1 compression and is one of a series of EJ20's. I am not doubting what people are telling me, I just want to "hear it from the horses mouth" if that makes sense. 09-19-2005, 07:01 AM #24 Oct 26, 2013 · The V7+ have better rods, crossdrilled crank, balanced, V7s have forged pistons, semi-closed deck that have thicker reinforcements and cylinder walls, better flowing heads (V7 Spec-C and all V8+), AVCS, and IIRC the V7/8s don't have the immobilizer ****. Dc Jap Automotive Australia's leading online Subaru parts provider. Feb 26, 2024 · The Closed Deck Subaru EJ20, Built for Boost! - MotoIQ. 210″ 9310 Steel Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins) Jul 7, 2009 · Well one of my little quests is over. Just because it will withstand a bit more abuse. Every STI engine has forged pistons. 111K subscribers in the WRX community. Mar 16, 2023 · The block was made out of aluminum and, depending on the model year, it employed either a closed or open deck design with cast-iron cylinder liners and five main bearings. During the closed deck process the cylinder walls become slightly distorted and an overbore must be performed to the correct this distortion and prepare the block to accept new pistons. Other than that, I am not sure about the internal differences between older JDM engines and the new USDM WRX engine. STI GD used IHI VF30 (VF35 for JDM WRX Type RA) which blows 1. Aug 29, 2009 · looking to build an ej207 with the following either) Blouch Dom 3. Worth it for the extra peace of mind. IAG 750 Closed Deck Includes: Case Halves - Converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 99. That design choice is part of the reason why these engines are still This is a genuine Subaru EJ207 2. C piston ring set; New Cosworth forged EN24 I-Beam connecting rod set Aug 12, 2021 · Planning on going closed deck, outfront motorsports sells a closed deck EJ205 shortblock. Closed deck is stronger in theory, but I might go as far as to say it's stronger than necessary and at the cost of other things. If someone can post a link confirming the USDM EJ257 is a semi-closed deck block, it would be greatly appreciated. Next, a deck pair of deck plates are attached and the short block is bored and honed to 92. 0L Turbo) The EJ22T in the 91-94 legacy turbo was a closed deck. Jun 27, 2024 · STI Version 7 EJ207 Semi closed deck block stamped S20C STI Version 8 EJ207 Semi closed deck block stamped T20C STI Version 9 EJ207 Semi closed deck block stamped T20C STI Version 10 EJ207 Semi closed deck block stamped W20C STI EJ257 Semi closed deck block stamped B25C Then there's also a difference in bore wall and stiffener thickness through THE PROBLEM SOLVER The IAG 750 Short Block is designed to solve the majority of common problems which plague modified EJ20 engines, especially at higher horsepower levels. 0 9 : Impreza WRX & Impreza WRX STi 5 [Type-F] The Impreza WRX gets an improved PHASE-2 engine with brand new intake manifold and camshafts to realize improved low May 9, 2016 · 96 WRX will be open deck. 1lt Stroker performance level EJ20 Turbo engine is designed around a new EJ207 semi closed deck block that incorporates a counterweighted and balanced 79mm forged STI crankshaft, Billet I Beam Pro-SA connecting rods and Cosworth 92. The EJ207/255/257 have stronger cylinders to to the semi closed design of the deck. This is a genuine Subaru EJ207 2. 75mm. thanks in advance by the way im not local. I've never heard of cooling issues with closed deck engine. We source low mileage blocks from a number of sources, and prepare them ourselves ready for your build. If you are putting this block in a car that it was not originally designed for, it carries no warranty expressed or implied. This motor is physically a bolt-in for all WRX and STi models Mar 12, 2022 · The EJ207 is one of the more respected engines in the companies history and specifically within the EJ20 series. 5 litre motors (and are probably alot cheaper). basically the us can take about half the power. IAG 800 FA20F DIT Sep 19, 2016 · Ej208 Vs Ej207 What are the Differences ? - posted in General: What are the Differences on the 208 and the sti 207 lot of people are telling the 208 is weak not forged the valves are not sodium filled it goes on but still Subaru used the 208 on the s401 they could have gone 207 to make it perfect but they didnt they used the 208. My question is, if you're going closed deck whats the point of paying for a 207 short block over the 205? Sep 10, 2020 · Anning suggests that if a customer desires to go north of 500 horsepower or in excess of 30-lbs. The pistons and connecting rods are forged. With the exception of the newer/better bearings that are now available. 2 closed deck block with the strongest Pistons and rods possible all balenced to be able to spin to 10k. Yes, the block is "semi-closed" but I don't see this as a weak point until big power is in the cards (>500whp). so it's probably smart to wait until it needs a refresh to do so, because even though the actual closed decking inserts arent super expensive, labor to pull and disassemble the motor This is a NEW genuine Subaru EJ207 2 litre short block as fitted in the V7 STi. a built 22B isnt anything better than a built 207 or 257. Building on our experience w Sep 9, 2010 · The closed deck case is pretty much inconsequential (from the EJ207), because it has nothing to do with the power you make, only with increased margin for reliability once you get there. Also thats American dyno though so take a bit more off. Oct 30, 2007 · Also, ej207s have goodies usdm sti owners drool over, such as forged internals (v7), twinscroll (v8), big port heads (late v7? and v8), 8k+ rpm redline (I hear the v8 can rev reliably to 8. Process. Everything they do pushes you closer to it. 5L cylinders split even when semi-closed, but 2. 5L). It shares DOHC cylinder heads and turbocharger with EJ20K but uses IAG Performance. Using high-precision equipment such as a FARO arm to produce the most accurate model possible. This Block is rated to 700 BHP before adding any upgrades. It has SOHC aluminum cylinder heads, oil sprayer inside the block, fully closed deck and no intercooler. I'm currently running EJ20G closed deck case halves, crank and rods with EJ207 pistons. VF42 was installed on the EJ207 engine for WRX STI S203 and S204. Nov 14, 2015 · I've read anywhere from 400 to 500hp at the wheels for an unopened 207 circa 2002 (forged pistons, semi closed deck). 5mm A closed deck design is the opposite of an open deck design, with the cylinder walls surrounded by a solid, continuous block structure. 62"x2. This process converts the EJ205’s open deck to a closed deck configuration via an insert that’s roughly . Feb 13, 2016 · Brief history of the EJ207 Begins in 99 with semi-closed deck and coil pack over manifold. Dec 9, 2021 · WRX Version 5/6/7 EJ205 Open deck block stamped R20 STI Version 5/6 EJ207 Open deck block stamped R20 STI Version 7 EJ207 Semi closed deck block stamped S20C STI Version 8 EJ207 Semi closed deck block stamped T20C STI Version 9 EJ207 Semi closed deck block stamped T20C STI Version 10 EJ207 Semi closed deck block stamped W20C STI EJ257 Semi Jul 19, 2024 · Iag closed deck ej207 cosworth tial PL rotated kit COBB Perrin and more Tons of parts that need to go! Version 5 EJ207 with 20k miles excellent running condition, i personally put over 5k miles on it and would use this motor to go anywhere. If your JDM ej207 is a closed deck it might be a saving factor and a big reason to keep it over the USDM bigger displacement blocks. This motor used Mitsubishi TD04 turbocharger, and the maximum boost pressure is 11 psi (0. This would be a good upgrade for your 2lt WRX. 0 compression ratio, idle air integrated into the throttle body, wasted spark coil off-center of manifold, red or bare aluminum intake manifold, open deck block, inlet under the manifold, AVCS variable valve timing, and higher rev limit than EJ205. 0 Liter EJ205 short-block directly from Subaru. Mike Shield's of SPD wrote a treatise on why his company would not develop a turbo kit for the EJ25, and a large part of it was the open deck design. 5:1 stroker pistons (still missing the rings, backordered till end of January) Cosworth rods ACL main bearings King Mar 21, 2018 · STI Version 7 EJ207 Semi closed deck block stamped S20C STI Version 8 EJ207 Semi closed deck block stamped T20C STI Version 9 EJ207 Semi closed deck block stamped T20C STI Version 10 EJ207 Semi closed deck block stamped W20C STI EJ257 Semi closed deck block stamped B25C Then there's also a difference in bore wall and stiffener thickness through May 7, 2021 · IAG PERFORMANCE EJ20 CLOSED DECK SHORT BLOCKS PRODUCT VIDEO. Sleeved by someone who knows what they are doing. Hopefully spec c with the updated block and crank. The Australian STI block features a semi-closed deck, forged rods and pistons for increased strength. With the appearance of the "New Age" Impreza, Subaru dropped the "Version" designation for the Impreza Sti, they differentiate the Sti by the factory designation "revision" A-G. I Custom CNC Close decking of EJ25 engine case halves with coolant passages cut to your required head gasket type. Jul 10, 2015 · The fault with the EJ205 is the fact that it is a completely open deck. 5mm. Jan 12, 2018 · I got a v7 closed deck shortblock with forged pistons and a good crank delivered to my door for 1000 dollars, you cant really beat that deal when heads are 400-500 to rebuild the heads and attach the heads to the block, so 1500 for a refreshed ej207/205 hybrid is not a bad deal. the awesomeness & reliability comes from factory assembly. EJ207(v8) has hypercast pistons, everything else is forged, the heads flow more(big port), the cams are more aggressive than v7. This system strengthens and supports the cylinder walls to prevent cracks which can occur with increased cylinder May 3, 2010 · And the EJ20 closed deck blocks, were only delivered on Legacy Turbo EJ20G, and the earliest Impreza WRX models around the world, I. Nov 5, 2018 · A bare EJ207 semi closed short block in slow motion, rotated by a cordless drill. . 5: Closed Deck EJ25 Case Halves with 13mm thread. This system strengthens and supports the cylinder walls May 18, 2013 · EJ207 The EJ207 has an 8. This process involves no heating or welding so does not affect the integrity of your block at all. The bore and stroke is 99. 1 bars. This motor is physically a bolt-in for all WRX and STi models and EJ20 vehicles from 1992-2019 used with the corr Buy STi 10103AC510 EJ207 RA STI Engine . Although being closed deck, the block does not feature oil squirters for piston cooling, opposed to the EJ20G closed deck block and the USDM-only Legacy EJ22T closed deck block. The subject of AVCS for early EJ207 has been debated in the past on this board. Custom billet 'H' beam rods 5. The EJ207 responds well to modifications yet requires high-quality oil and consistent maintenance. The procedure is fairly easy: Take the stock cam sensors from the EJ257 heads They will fit in the EJ207 heads with a slightly thinner o-ring (stock ej207 ones work great) Once you have the heads bolted up, go ahead and assemble the RH head with your cam of choice and install the EJ257 cam sensor. Hard to find someone who puts in the meticulous work including pinned mains and closed deck on all blocks. Closed deck engine • bulbs ideas. 5k rpm!), semi-closed deck, and better avcs settings. Customer to supply case halves or we can supply case halves depending on stock for an additional charge. 207-G - Semi closed deck like the USDM 257 the 207 spins higher RPM due to better oiling, and heavy duty valve springs. It's not really the limiting factor, but it's more difficult to bore right because it moves more when the heads are torqued on. Every IAG Closed Deck case must be bored and honed after the closed deck process. Jan 13, 2013 · We suspect revision B received the "new" style ej207 blocks which are 3/4 closed deck (ie thicker cylinder liners which take up alot more room and are more sturdy than the previous ej207 semi closed decks 3. As far as semi closed deck blocks I don't believe any of the 205 were semi closed deck only 207 ie different castings Note: We have also developed a 2L variation to suit EJ207 semi-closed deck block as found in V7-10 STIs. EJ20K Apr 16, 2008 · 1) All EJ207 are semi-closed 2) Spec-C crank is different than USDM STI crank. unless you are building a replica 22B, there is no point in todays age to build a EJ22T as there are alot of closed deck options for 2. This is still the same brand new Subaru OEM block as before, just at a lower price! This is a brand new, completely assembled 2. 537 votes, 57 comments. SubiPerformance in Germany sells an EJ207 shortblock which is much more expensive. 2L closed deck motor about somewhere and the EJ205 heads ain't so bad 2015 STi: Still Stock 04 STi, 04 WRX: SOLD. 5:1 8. If true, and hence the blocks themselves are dimensionally identical, that would enable me to basically build the engine as a closed-deck 207. Extremely reliable with excellent compression. Custom Race Rod Bearings 6. N54 n55 hcr Ej engine closed decking: stage 2 Deck open closed block vs engine semi blocks sleeved evox evo honda. You definitely know more about the difference than me, but I didn't see what you are trying to show me, other than all the JDM STi,etc use the same crank. Nov 9, 2023 · Both are turbocharged, four-cylinder, horizontally opposed, boxer-style engines. The current USDM EJ257 makes 310bhp. 0 review(s) £3,041. 0L open deck will hold boost more reliably. This is a genuine Subaru EJ207 2. 5L closed deck short block from IAG, with the +2mm rods to slow those pistons down a little bit so they will survive up top. Stock Ej205 with 126k miles, probably 100k miles as "stage 2". Conversion aa yout convert. CNC Closed Deck Modification EJ25 CNC Closed Deck Modification EJ20 Extreme power EJ20 and EJ25 are based on Jul 19, 2024 · Tons of parts that need to go! Version 5 EJ207 with 20k miles excellent running condition, i personally put over 5k miles on it and would use this motor to go anywhere. 0l which has thicker liners but is an open deck. The IAG 750 Short Block is designed to solve the majority of common problems which plague modified EJ20 engines, especially at higher horsepower levels. Custom Forged Pistons 8. So if the ej207 and ej205 hg are the same, why wouldn't a 2. thats the best part of a 207. 255 et 257: Grande puissance Jun 6, 2005 · Closed Deck vs Open Deck was a major issue about 5 years ago before the WRX hit. I would just build it to rev to 8K on a twin-scroll setup. Closed Deck Engine • Decks Ideas. Subaru Engine modification Specialist. Suitable for all EJ20 Builds, and the preferred platform for high performance and competition engines. The billet material that reinforces the combustion area has been further optimized with our V4 closed deck block in the known problem areas making it a far superio Mar 24, 2016 · I know the JDM EJ207 is a semi-closed deck block (in terms of JDM WRX STi). If the bores are in good shape, that will keep the cost down. têtes du moteurs sont extremement puissant, mais les coûts pour des ej207 c'est cher en criss. Dec 3, 2012 · Back when there were really only 2. The EJ22T is 91-94 USDM Legacy Turbo engine. Hope that helps. Subaru Thick Walled Semi Closed Deck Block Pair EJ20. Sep 15, 2006 · as blarg said, the EJ207 block is stronger than the EJ205. # Oct 30, 2014 · the closed deck argument is so old, because anything short of a $3000 standalone, you wont be able to control the power a closed deck can handle on G running gear building a closed deck g is just wasted money, when you can throw in a proven engine for a grand that will not suffer from shitty machining and build errors. This shortblock is standard equipment on the 2002-2005 Australian STi. It will move less when the head studs are torqued and it will hold slightly more power. 0 and 2. The Australian STi block features a semi-closed deck, forged rods and pistons for increased strength. Check Details. Then port and polish v7 type ra heads with oversized valves beehive springs and spec c cams then a gtx30 with a v mount set up and reverse manifold. It has forged rods and hypereutectic cast pistons, with a bore of 99. 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. Here are the models available for the closed deck block conversion service. the twelve and six o’clock . of boost, a closed-deck block is a requirement for added protection. . Custom treat crankshaft for hardness 4. Open deck vs closed deckSupporting your cylinders The closed deck subaru ej20, built for boost!How to tell if you have a closed deck ej20g?. But thanks to Dave at Rallispec and Mike from Roger Clark Motorsport who checked a number of part numbers, I can tell you that even though this newer STI engine is designated as a 20Y, it still has the same build as the previous STI EJ207 engines. 75 bar). 210" 9310 Steel Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins) Connecting Rods - IAG-Spec Tuff H-Beam / ARP2000 Rod Bolts. 67 ex. Nov 17, 2006 · The EJ207 is semi-closed deck, the EJ205 is open deck, that is a big difference that should make them look different. 5mm 2618 Forged Pistons, Ring Set, . 0/FP RED/td 06 25G sti semi-close deck. 0 (1994 cubical cm) and has the following main measurements (factory brochure): BorexStroke 3. Closed deck Subaru engine case conversion - AA Performance Project : AA. The last car with closed deck was the MY96 STi RA V-Limited. The capacity of the EJ20G stock fuel injectors is 380 cc. 5 mm x 79 mm, and they both utilize electronic fuel injection. Open decks allow for more consistent temps and better control which helps emissions, but most of the rock solid reliable engines of the past are closed deck. EJ22 Closed Deck Block Halves (remanufactured) RCM / Arrow H Section Con Rod; RCM / Omega This is a genuine Subaru EJ207 2. 5mm and stroke of 79mm. Closed Deck Engine 9. vzln utep hio uzlr jnhfx wmlf xwgbp pip tamj csfpld