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Showing results for tags 'EJ253'.
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Happy Labor Day! Edit: Fixed with a new Crankshaft Sprocket - see pics of damaged one below. What I'm working on this time: -2005 Outback, Automatic, base 2.5i model with EJ253, 180K - This is the MAF-based, non i-AVLS version. This is the newest Subaru I've worked on. -I bought it 2 weeks ago with a broken timing belt tensioner -the mounting bolt sheared off and very likely damaged pistons and/or valves. Shop had removed the timing covers and found the broken bolt. Owner said -'$pend no more' - and put it on CL. So, I never drove it or heard it run. -Replacement engine is a 2004 EJ251 (VIN confirmed from block stamping) - unknown miles and condition. Long-block only. - Both are EGR; '05 heads stamped Z25; '04 stamped L25. -Moved both Cam sprockets / Gears, Crank Sprocket, Intake Manifold, knock sensor, engine mounts, etc. to the EJ251 (did NOT move the cam or crank sensor - per online Subaru parts they are the same p/n). Installed a brand new T-Belt (Evergreen?? belt) - with Aisin Water Pump and GMB pulleys and tensioner (ebait Mizumo kit). Everything bolted up w/out issue. Brand new battery. New NGK plugs. Fresh oil and filter, and coolant. -The only 'surprise' to me was the newer style Crank Sprocket. I had to double-check online what alignment mark to use. But I'm 99% sure I got it and the Cams aligned correctly. I've done ~10 T-Belts on EJ-series SOHC and DOHC versions w/out a problem. - Used this for reference: - First Start: Starts up but runs really rough and smokes out exhaust. Did not hear any engine knock. I let it run about 30 seconds. Cruise light is flashing. turn if off and checking with OBD2 scanner Shows No Codes. Try it a 2nd time and same issue and no codes. - What would you Gurus check first? If I did mess up the Tbelt install, wouldn't I get a Cam, Crank or Misfire code? Thanks for any Responses! -
Hey all. Starting a new thread because it's been awhile since my last post about this topic. Long story short - I have a 2009 Subaru Impreza 2.5I that I did a JDM boxer engine (EJ253) swap with. Everything went smooth except I am getting a P1491 code (PCV sensor error). This is because the boxer engine I put in physically does not have the sensor itself and therefore the ECM from the car is not picking anything up on its end. So after some digging through the FSM I think I found the correct pins where I can put a resistor or jumper on the ECM to artificially complete the circuit and bypass the code. The only problem is that those pins are currently occupied and I am nervous that they may be running to something else. Could JDM just have capped the ends of these two wires somewhere in the harness or are they actually being used? Does anyone have any experience with this? I'm attaching some photos for reference. Picture 1: Wiring diagram found in the FSM. My plan is to put a resistor between pin 41 and pin 45 on B21 (wiring harness from the boxer engine) Picture 2: The back of the wiring harness from the boxer engine. Note that pin 41 is occupied by a yellow / red wire while pin 45 (hard to see) is occupied by a solid orange wire. Appreciate all the help and let me know if my logic is flawed! - Geoff
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SOLVED Body: '98 OBW Current motor: EJ251 block, EJ25D heads (rings are letting oil be consumed, and there are sounds of the beginnings of rod-knock) Newer motor: Reman EJ253/251 block, EJ25D heads. Hey folks. I bought a reman block form subaru. EJ253/251 block for a 2003 forester. Mating it with EJ25D heads to replace my current hybrid (EJ251 and EJ25D heads). Everything is just about ready to go except the PCV system. The newer block has what appears to be a threaded-in bung to accepted a threaded PCV. Being that the intake I'm using is for the heads, it already has a PCV. Has anyone put a newer block into an older system and routed the PCV system successfully? The old-style is just a pipe that comes out of the block, with the vinyl tubes coming off of it. They don't fit over the new interface. I'll try and get photos soon. Looking at pictures for the newer PCV, it doesn't look as if its outer diameter is the same inner diameter of the older crankcase hose that would be going up to the PCV on the intake. a Thoughts and advice much appreciated. Greg -
It’s kind of crazy to think how long I’ve been in the Subaru game and yet I’ve never replaced a 2.5 head gasket! I only want to deal with this repair once, hence this thread: I was under my wife’s 1999 Forester for an oil change over the weekend and noticed the bottom of the driver’s side of the engine was COVERED with engine oil. I had long suspected that it was the cam seal leaking, but the volume of oil and the area it covered has been slowly growing over the last few oil changes. A little research revealed that the EJ253 in this Forester likes to pop its head gasket and then leaks oil externally, which correlates with what I’m seeing. We lose about 1-2 quarts of oil between changes (I top it up often) but the engine doesn’t appear to burn any oil (no smoke out the tailpipe, hot or cold). The head gaskets were originally replaced at 78k miles (w/ P/N 11044AA633 head gaskets) and the engine now has about 205k miles on it now. We’re past due for a timing belt as well, so here is the list of parts that we’ve got so far: Timing Belt Parts: Timing belt Tensioner/idlers Crank pulley bolt Water pump & gasket Thermostat & gasket Cam seals F/R Crank seals A/C idler pulley Oil pump reseal/O-ring kit I’ve been doing a bunch of research on what else I should touch “while I’m in there.” In past posts @GeneralDisorder has suggested changing out the piston rings, installing knurled pistons and upgrading to a 10 mm oil pump. I will have the heads milled (if still in spec) but what else should I consider? Valvetrain work? Is there anything I can do to help oil drain back to keep the pistons from getting clogged? Head Gasket Parts: 770 head gaskets Exhaust manifold gaskets Intake manifold gaskets Valve cover gaskets Valve seals (int. & exh.) (I’ve read that the SOHC engines have a tendency to drop exhaust valve guides and that these should be knurled to keep them from dropping?) Sparkplug tube seals Valve cover bolt grommets Misc. Parts: Spark plugs Spark plug wires 10mm oil pump PCV valve Knock Sensor (original is cracked) Battery cables/tie down/j-bolts (battery terminals/tie down are fuzzy and have read this is a potential cause of driver’s side gasket failures) So, flame suit on, please let me know what you think of my parts list! Are there obvious omissions? Are there parts I could swap in for little expense that will help power/longevity (such as uprated camshafts, pistons, etc.?) Note, this isn’t a performance build, so I’m not thinking about forged, high-compression pistons or anything, but if there is an OEM piston that I could swap in that would provide a slight performance advantage, I would be interested in something like that, or Delta Cams, etc. How far away from a Frakenmotor would I be? Would an STI oil pan be something to install? -
I finally pulled the short block (SOA478H600R1) that I purchased a couple months ago out of the box and put onto a stand. Changed out the 7mm oil pump for a 9mm that I had (I don't think I'll need a 10mm as I'm a conservative driver, and this is just for a DD project). Looking at the pistons, they're labeled as 255 SH. Is this going to be a problem mounting with DOHC heads? When I was talking with a subaru parts tech over the phone I had specified that I wanted an EJ251 or EJ253 short block for '03-'05, and they had given me the part number. I had then talked with a different Parts Tech, and they confirmed that that part number was for what I had specified. Are the pistons the same? I thought the 255s were used with the AVL systems, and can't work with pre-AVLS. . Should I be looking for new pistons now? The current motor in my car is an EJ from a 2001 Impreza, with DOHC heads. I wanted to recreate the build as it is generally a nice and powerful (enough) motor. Also, I bought a brand new subaru water pump because I thought the stock one that came on the block was supposed to be forward facing.... What showed up is identical to the spare I bought. They are identical, right? Thanks all, Greg
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Hi all, I'll most likely be purchasing a forester (2006-2008) or OBW (2005-2009) soon from an auto-auction. 5-speed much preferred. Plan is to spend about $500-$750 for something with decent interior, okay exterior, and something under 150k miles. Right now, I'm assuming that anything I get will have leaking Headgasket(s), and will have been run low on oil. Some of the auction sites have videos of the motors running, and they often have rod-knock. I need a dependable vehicle for the next 5 years, and I'm also pretty broke being in grad school. I can only afford something in the $5k-6k range, and everything I find is hyper-mileage and/or : leaking HGs, bad power steering pumps, leaking rocker covers, etc. AND people don't want less than they're asking. Just looked at an '06 Baja with 180k on it... guy said it was mint. They wanted $7k for 4 miss-matched bald tires, air-filled ps pump, leaking HG, leaking rear main, +1 quart overfilled oil, and a sticker over the check engine light that said (and I'm not joking) "Prayer helps". I don't want to be doing a lot of time-consuming general maintenance while I travel to/from my clinical observations, so I'm considering purchasing a JDM-imported engine, a remanufactured engine, or an oem subaru shortblock... Questions: If I purchase a JDM import, do I put new gaskets in right away before putting in the car? They're supposed to have 50-60k miles on them... Should valves be looked at? Costs about $2500 There's a store on ebay selling a remanufactured long block for $3400, and a 3-year unlimited mile warranty. They have 100% feedback as well. Is that a decent price? (https://www.ebay.com/itm/Reman-06-10-Subaru-2-5-SOHC-with-Active-Valve-Lift-System-Long-Block-Engine/392273889947?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908131621%26meid%3D1be2c92c13164e4abb215bcaf145c0f3%26pid%3D100678%26rk%3D2%26rkt%3D9%26mehot%3Dnone%26sd%3D254707892452%26itm%3D392273889947%26pmt%3D0%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100678.m3607&_trkparms=pageci%3Aded9a85d-f60f-11ea-bc4a-74dbd180c969|parentrq%3A8991b27f1740ada5af08721ffffff85c|iid%3A1) Subaru Genuine shortblock for about $2000 shipped to my front door. 12-month unlimited warranty, and doesn't need to be installed by a subaru shop. This is for the stock EJ253 block. Should I get a different block? EJ257? I'm not looking for anything but a leak-free, dependable engine/drivetrain. What headgaskets should I use to replace the SOHC paper-like-gaskets? 04-06 STI MLS headgaskets? I have a low-mile 5mt to go with the car. Even if the body is messed up a bit, as long as the drivetrain is solid, that's what i really care about. Any thoughts or suggestions will be appreciated. Thanks guys. Greg
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The vehicle is 2010 Forester with 106000 miles. The YouTuber brianmobil1 mentioned that the top of the tensioner rod must be smooth. Mine is warn out. It is not leaking oil and I was going to reuse it. Should I replace it? Thanks for looking, Sam
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I have a rebuilt sohc ej25 sitting in my garage that I'm about to finish building out. I’m trying to figure out if it’s an ej253 or an ej254 or other. I do not have the VIN # from the donor vehicle. Is there a way to visually figure out which variant I have? Thanks, -bob -
Hi everybody! I could use some advice . . . . . After my oil change the Valvoline guys had trouble getting my hood closed, and used a screwdriver to push down the hood-release cable. (it was sticking) Yes, they put the screwdriver through something they shouldn't have I had *just* had the coolant changed at the Subaru dealership because I'm aware of the typical head gasket issues. Mine is a 2006 EJ253, so I think it's low-risk, but it still pays to be cautious. So what was in my cooling system was the right stuff with the right additive (official Subaru stop-leak). Valvoline pulled off my radiator before realizing they actually had stabbed the air conditioning exchanger. So I've got my original radiator. I was *very specific* I didn't want any of their coolant in my car, but they topped it off with their product (probably XEREX) when they reassembled. * Is this going to be ok? They say Valvoline supplies Subaru's coolant. If that's the case, why shouldn't I just have them do it (giving them a bottle of the official additive to mix in) rather than pay 3x as much at the dealership? But if the Valvoline XEREX coolant isn't the right stuff, I'll probably be continuing to go to the dealer for that. My immediate concern is that I don't want the Subaru coolant/additive to react badly with the XEREX and plug my radiator or heater core. My long-term concern is that I want to not have to do a head gasket job on this car for a very long time if possible. Looking for some good advice from those who know these things! Thank you ~Nicole -
Here's my situation: I bought a used 2005 Forester X 2.5L SOHC w/ 4-speed Auto Trans with 65,000mi. About a year ago I ran it out of oil (and I'll never hear the end of it). Sounds like a rod is knocking. Between my dad and my brother who is a VW tech, I can get the engine in and out of the car. The problem is that I'm finding it insanely difficult to find info on this engine as well as the car's compatability with other engines. The info off the timing cover reads: EJ253BXSAB-0D8 459576 LC 10 Don't know how to interpret this past the 253. I want to rebuild the engine, but having mostly worked with GM vehicals (I'm the first in the fam to own a Subaru) I know little about these.I thought maybe it would be smart to drop another engine in while I rebuild so that the car is driveable, but the only exact match available through LKQ is nearlly $2,000 shipped. A bit pricey. I was told over the phone by an engine salesman that an EJ20 would drop right in and that the 06+ EJ253s would not, but I have no idea how they would and would not match up. Also, I've learn from experience not to take the words of a salesman to heart. I understand the basics of engine timing, but I don't know how the ECU compatabilites differ between models. I realize I'm asking a lot but I'm just at a loss and need help. If experience were not a factor, would it be a good option to start the rebuild? Or is there another inexpensive option for interchanging? I realize there is a lot of good info in these forums so If something has already been discussed, I'd appreciate a link.
