SUBARU Engine Rebuild - EJ20 / EJ25 Teardown How To

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We begin our EJ20 / EJ25 Subaru engine rebuild by doing a full step by step DIY disassembly and how to engine teardown.
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5 окт 2024

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Комментарии : 645

@speedacademy 5 лет назад

What chassis should we put this engine into when we rebuild it?

@_Erogaki 5 лет назад

944

@ichihusni5014 5 лет назад

frs

@041418062 5 лет назад

yes yes yes about time ,,,,,, put this baby into a FRS and take that FRS to NFLD ....(wisper....Targa Newfoundland) :)

@qotsa1 5 лет назад

Speed Academy mid 90s legacy gt

@LampuhkapsChannel 5 лет назад

a crappy old beetle :D

@braggland8451 4 года назад

Watching a great mechanic is kinda like watching a world class surgeon work. Amazing talent.

@krebgurfson5732 3 года назад

you've never watched a "world class surgeon" work

@braggland8451 3 года назад

@@krebgurfson5732 considering i have worked for the last 20 year in an operating room assisting a surgeon I would say you are wrong. But I am sure you are use to being wrong since you seem to alway be wrong loser

@jdcswimmer2016 2 года назад

i love this analogy

@marcevensauguste 2 года назад

The thing is the mechanic is the surgeon of that metal body where a surgeon is the mechanic of a biological body !

@archipiphanyworkshop860 Год назад

I tell my mechanic this all the time.

@aranzsf393 3 года назад

God I wish I could have done an apprenticeship during the time of the EJ series of engines

@saigoneze4465 4 года назад

Nam is a wizard he made this tear down like a chore .Many yrs of experience right there

@kyletice811 5 лет назад

This video just makes me appreciate how easy American OHV V8 based engines are to work on,specifically the LS platform...

@mrsorgic4790 4 года назад

@Eze&Yare Dominguez this is a very simple engine. Once you do two or three you would be able to remember all the pieces and parts easily. It just looks complex when you do it first time. All the parts are high quality and fit easily. Unlike some.

@thefuzzypickle8277 4 года назад

@Merl Klarhoelter the fuck are you crying about? Those LS's still outperform a large number of DOHC

@eastoakland-S65feen 3 года назад

@Brett i have a B7 S4 & thus block seems more complicated than the bbk v8 i have

@GrizzlyPuncha Год назад

Very refreshing watching a mechanic that is able to explain things in detail without pausing every 3 seconds to figure out what they're actually doing, or not knowing any of the terminology to describe the function of a component

@Mattiflips 5 лет назад

Subaru flat motors are a lot like harley or other older vtwin style engines that have vertically split cases. Thats pretty neat to see how it breaks down to such a small engine block that a guy can move it around on the table.

@Bansheeboy11 5 лет назад

Just to add a quick note, the LH cam gears that are loaded are easy to mess up and bend the valves, they didnt do it the right way. The intake gear needs to be spun clockwise, the exhaust gear needs to be spun counter clockwise. Most of the time you can get away with doing it like they did but theres enough spring pressure that if one of the gears slips it will catch the edges of the valves and will easily bend them, and no one ever checks after they do it which can lead to the car running like crap, or turning the valves into a tossed salad.

@island03z 5 лет назад

isnt it the other way around? for unloading the cams the intake goes counterclockwise exhaust goes clock wise

@ericbarney5036 5 лет назад

I don't think they are that easy to bend. I believe it's more of a precaution, so you don't take a impact or a breaker bar to the bolts. I'm picturing some ding dong kicking the breaker bar like he/she is trying to crack lugnuts on the side of 95.

@Natedoc808 4 года назад

the Key being to make sure the crank alignment mark and oil pump mark are lined up so the pistons are mid stroke and you don't bend the valves.

@frostyflowers4207 5 лет назад

Never owned Subaru engine so many videos on rebuilds Must be RU-vid TOP rebuilt engine online

@benbauer1257 4 года назад

Because they go just enough to warrant frequent rebuilding but they last long enough before that to warrant doing it in the first place.

@michaeldwyer5013 3 года назад

I have been driving n working on Subaru for the last 31 years

@mattmatt9971 2 года назад

what's the most reliable Subaru engine sir

@michaeldwyer5013 2 года назад

@@mattmatt9971 ej20

@mattmatt9971 2 года назад

@@michaeldwyer5013Cheers. I got EJ20G in my 1995 sti.

@brandonwalk77 3 года назад

I’d love to rebuild one after watching this! A good challenge

@buildbros2088 5 лет назад

Very interesting. I never would have thought to dismember the rods from the pistons to complete a tear down. However the access ports for the wrist pin clips was pretty neat!

@Snake.br549 2 года назад

Yes sir I have a special hardened socket just for the head bolts used to do at least one or two head gasket and engine reseal on Subarus a week I have just a little experience!

@Aspentera 5 лет назад

I’m rebuilding my engine I JUST took it out the car today this video was amazing to see how it’s done ☺️

@monkeylover2835 5 лет назад

Label EVERYTHING. If anything needs blasted/repaired, keep it labelled. And photograph everything and every stage of disassembly. I'm rebuilding my engine now, and I'm finding brackets I have no idea what they are.

@thelonewanderer420 4 года назад

@@monkeylover2835 I did that for like my first five engine rebuilds, it was fucking horrible

@AuGold808 4 года назад

How'd it go?

@Aspentera 4 года назад

Nowukkas brah haha thank you😂

@Aspentera 4 года назад

BR Harrison it went AMAZING☺️ I already put 500 miles on the motor going for the tune on Thursday!!

@potardo9851 3 года назад

Today I learned that I infact don't want to build a Subaru engine. Nam is a Subaru god great job and finesse.

@dtrestoration8590 4 месяца назад

Despite of the beautiful works on the rebuilt, your cinematic shoot is absolutely amazing. Especially those timelapse, always fascinating.

@rasdavis8390 2 месяца назад

Nam is a serious guy enjoyed that shouts from England can tell he knows what's up ❤

@davidhewell 5 лет назад

Goodness. It's like a Japanese puzzle box!

@Леонардо-ж2з 5 лет назад

the ej is still nothing compared to working on my vg30dett 😂

@mayuravirus6134 4 года назад

@@Леонардо-ж2з Hope it blows up

@scottruch76 4 года назад

Honestly its like a giant lego set

@br4br2 5 лет назад

Really impressed with his knowledge. When a mechanic is that proficient at engine rebuilds you know those engines are terribly unreliable lol

@StanleyKubick1 5 лет назад

they're very reliable. they have a few issues, but they always go at least 180k miles. problem is that they're not maintained well and hooned often.

@hondatrix 5 лет назад

True...

@octurbojoe 5 лет назад

Every engine is reliable as the person who is operating or maintaining them. Increasing the output and operating an engine at its limits reduces longevity. Lack of maintenance reduces reliability even more.

@markheefner6527 5 лет назад

Well my 06 LGT has a stage 2 tune and a vf52 turbo and has 200k miles no issues. My 1999 subaru legacy outback has 240k with zero issues also. So I think it's more user error than the ej series motors.

@andrewolszewski5027 5 лет назад

@@markheefner6527 Did you replace injectors/fuel pump using the VF52? In the middle of a similar build right now with my 05 Legacy GT. Engine is out at the machine shop at the moment.

@igordjordjevic5422 4 года назад

Subaru is the king of the road

@johnmuteti7362 5 лет назад

Best EJ20 breakdown ever.

@thoriaedwards1315 5 лет назад

Hey I have a p0500 code on my subaru exiga 2008 turbocharged but I can't seem to find where the sensor is located. Can any 1 help?

@jnunez9771 5 лет назад

You should do a side by side comparison usdm vs jdm motor tear down would be cool to see what the states don’t get

@Under-Think-Cooking 4 года назад

James Nunez just take everything good off the JDM engine, and then you get the one for the states, we never get the goods :/

@acedogboy8421 4 года назад

U get a reliable motor if u get a jdm one lmao

@alexzanderseaberg8896 2 года назад

I’m rebuilding an ej25 rn, this was a hell of a run through, thank you guys

@chrisguzman7926 2 года назад

how's it going so far? my ej25 died from rod kock and wanna drop an ej205 in it but not sure if my engine is still able to be rebuilt

@1gsrtom 5 лет назад

Geez those boxer engines are so much more work to take apart & put back together compared to a inline four design.

@snowysysadmin59 5 лет назад

Theyre so much easier to install though and remove.

@mumbibabyz2651 Год назад

Opening an Subaru engine today for the first time alone. Thanks for the info

@Day-Cab 5 лет назад

Interesting! Thank you. Have a Subaru w/ a 2.5 eng. Just bought the car.

@AndyPat239 6 месяцев назад

is is single or DOHC? mine is a single and non vvt

@gairnmclennan5876 4 года назад

Good to note cracking off (the first half turn of undoing bolts)bolts by hand. Cracking off by impact wrench really does mash the threads and size them.

@victormendoza2630 5 лет назад

I love the way You teach. Thank You so much!

@jeremyncrm2012 2 года назад

These engines have caused me so much grief over the years but I still like them for some reason.

@johnnyxcalade 4 года назад

I don't even own a WRX, but i enjoyed this video immensely.

@silverhoof0152 2 года назад

This is perfect, because I had to replace my oil pump, and I might look back on this video for a rebuilding my engine to make more power.

@boxingproff7627 5 лет назад

Disassembling these engines is always fun.

@erickireri6282 2 года назад

thanks a lot guys, I am a tutor, my class and I learned a lot through this video thanks

@vxzoraptor9545 2 года назад

video is very good. throughly explains everything and speaks slow but a good pace so u can understand. keep up the good work man :)

@MarcosVinicius-hk7ue 4 года назад

Good afternoon!!! my name is Marcos Vinicius speaking from the city of Curitiba Brasil🇧🇷. I'm a big fan of your channel

@marcelwessel839 5 лет назад

Seems that the cause of the burnt valveseat is either a bent valve or a damaged valve guide, as nam seems to need way more force than normal to pull this one valve out.

@jorkkahepponen5992 3 года назад

jeah.but correct the MB C200 kompressor head. ..

@carlob517 5 лет назад

great video , I've always been curious about how the block is parted thanks , removing the piston clips & pins was an eye opening , only flat 4 I've done was a VW this is way different obviously due to water cooling and overhead camshafts & cambelts and with VW the bores/barrels can be slide out of the crankcasing , knowledge and being methodical clearly is the only way to go with the Scooby engine, doesn't appear too difficult to dismantle I'm sure the rebuilding has lots of do's and don'ts that aren't so obvious at first ,cheers

@manauryreyes7262 5 месяцев назад

I really want to appreciate you guys for this!!

@theejoeylee 5 лет назад

My neighbor worked at a Subaru dealer in the 90's. His wife had a Blue 2 door 2.5 RS in like 99 or 2000 w gold wheels.(had a black one before) Looked like it str8 came out of Grand turismo stock. I would LOVE to see a good engine in one with a big ol spoolie boi

@pFbSpecV 5 лет назад

Awesome!! After seeing this I dont think I ever want a sti lol

@aronharper7001 5 лет назад

I concur...sure my NA K20 is gutless but easy to rebuild...like a lawnmower!

@pFbSpecV 5 лет назад

@@aronharper7001 k series is life tho!

@BP-fx3qc 5 лет назад

Its not so bad trust me, i came from a h22a obd1 closed deck to an sti, the ej looks more complicated than it actually is.

@snowysysadmin59 5 лет назад

I just did a rebuild on my ej20 and while the engine is complex and difficult, reinstalling is so fucking easy. The the motor mounts are on the block, put it onto the subframe and its just two studs. Done. Takes less than an hour. While staight 4s have 4 different motor mount locations and shit. Fuck that.

@MidwestDankAlumni 5 лет назад

An* STi

@laohantun7404 5 лет назад

Subarus are really really art of Japanese engineering....

@adminbuster5225 3 года назад

I am going to need this for my little ride yesterday

@AutomotiveAnatomy 5 лет назад

Best automotice channel hands down!

@joaquinaguirre2976 2 года назад

Thanks guys, it's a good video, very professional and instructive and educational, I learned a lot. I want to tell you that I really appreciate it.

@ikkyuh3 3 года назад

I have been using Valvoline Oil 10W-40 for EZ30R engine of SUBARU, too.

@mitchellmoor3846 4 года назад

I’ve had 4 Subaru’s and I currently own a built 2017 STI and I can tell you it’s cheaper to just buy a built block and rework whatever heads you have than rebuild. You can buy a built short block and get a 1 year warranty and still come out cheaper than rebuilding a 2.0 or 2.5

@adamzebrowski1459 5 лет назад

Awesome vid guys. Thanks for sharing. Love the content on this project so far!

@trancet 5 лет назад

Not all USDM motors are drive by wire, only the 2.5L turbo motors are (04+ sti 06+ wrx) in the us. EJ205s are all cable driven.

@terrigfy60thatguy28 5 лет назад

Also to add usdm models do have the hex or flat sides on the cams for a wrench on early 04s to 02s

@gracie82410 5 лет назад

My 07 2.5 legacy is dbw and so is my 2.5 in the 10 Forrester

@gracie82410 5 лет назад

And they are n/a

@cocacolagrl100 3 года назад

There’s a reason why they call them master techs. Amazing .

@MrBaconstrips13 5 лет назад

I have an Ej255, so i'll probably have to do this sooner or later :D And I basically live down the street from NvAuto, so that's a bonus.

@mrbeans2425 2 года назад

If only you were an actual program/school.... AMAZING video! @ 2:00 I was lost for a second when he goes to do the intake manifold, because there's no bolt. But then I recognized he's obviously doing this for teaching purposes, and there would normally be a bolt there! lol im so dumb! hahaha

@mikebigelow9057 4 года назад

Put this motor in a Factory Five 818 C . I am going for a WRX STI in the coupe I am building. 1900 lbs pushed by 310 horsepower. What a rocket.

@aldaris38 3 года назад

Looking at the complexity of this boxer engine, no wonder why Suby's engine repair cost usually more than a traditional inline 4.

@igordjordjevic5422 4 года назад

i have never driven a subaru but i dream about driving it i adore that car

@gilbertmelendez8836 3 года назад

I never imagined I would Fall in love with this Japanese Car.. my first car and Love was a 95 Mustang GT and I was a V8 Ford guy through and through and I test drove an 02 WRX bugeye and then a 2016 WRX and now I finally have my dream Subaru a 2018 STI❤ if you ever have a chance just test drive one and maybe it will change your Car Flavor like it did me

@steveabcdef7165 3 года назад

Great explanation by the bloke, good job guys!

@ncvwrx2759 5 лет назад

fyi, i owned a USDM 2.0 WRX wagon, and it has cable throttle. I believe in the US, the EJ257/ej255 was the first engines to get DBW. and the 2.0L EJ was no longer in US WRX after 2005.

@jozensenz Год назад

Jus watching made me sub this is the kind on knowledge i was looking for

@akuslides 2 года назад

really good video quality. straight to the point and informative

@Natedoc808 5 лет назад

For the Cam gears: when you shear off a hardened 3/4” drive Allen trying to break it free, the factory may be fucking up putting them on that tightly. Strangely enough my USDM EJ205T had the hex shank to secure the cam from spinning but there is no way these bolts being so insanely difficult were torqued at the factory to the spec outline in the FSM. Edit: be very very careful with the cam bolts if doing HGs in the car, have to use a shallow, 6 point 10mm socket and be sure to tap the socket on deeply as the cam bolt heads are quite prone to stripping.

@Ariz04 5 лет назад

YES! another EJ video on YT. my project has been sitting in the garage for the whole winter. n i can't wait to learn new things that I'm gonna have to tackle.

@insightauto2052 5 лет назад

Factory Five Racing has a pretty neat tiny Miata-ish affordable build setup specifically for these engines :)

@speedacademy 5 лет назад

Yup, the 818 is a pretty cool little car, our friends over at NV Auto just built one.

@Socalsayten6six6 5 лет назад

Where's the vape holder ?

@TimZ007 5 лет назад

LOL. so true

@axsb 5 лет назад

man i feel like bmw and subaru engines are no where near easy to work on compare to b and k series.

@BobPegram 5 лет назад

Who makes those engines?

@wedgoku 5 лет назад

@@BobPegram b & k series are Honda engines

@upgradeNEVER 5 лет назад

Once you know what you're doing, they're pretty straight forward. All EJ blocks are basically the same, bar bore size and a few other things. Also Subaru's share a lot of parts between them in most aspects, so working on a Impreza is very similar to working on a Forester - talking about the older ones, where they shared the same platform.

@Ariz04 5 лет назад

EJ's are actually pretty easy to work on. i was kinda scared to tackle my ej205 at first coz i haven't worked on a boxer engine before. but it's actually pretty easy.

@andrewolszewski5027 5 лет назад

@@Ariz04 I'd say the EJ255s are one of the easiest engines to pull from a car that I've done so far.

@BobPegram 5 лет назад

Tons of VWs have Subaru engines. This might be a nice upgrade for a 914 if you feel like exhuming one! A transplant you won't do is fairly popular among pilots, put a Subaru engine in a plane. They like it because it does not shake at all and has good power. It is not approved by the FAA but the approved engines are dynasaurs!

@FourDollaRacing 5 лет назад

Bullshit. Every application you mention uses air-cooled engines. Not water-cooled. Huge fucking difference Mr. Armchair pilot....

@lukeybabes1 5 лет назад

@@FourDollaRacing Chill out mate

@insightauto2052 5 лет назад

The NV Auto guys! Hamilton represent 👊🏽

@phillm156 2 месяца назад

I had both versions. 03 wrx, 07 STI. I always believed the EJ25 was more durable for hi boost or was told by the all the tuners.

@curtisbeef 5 лет назад

Oh shit... I know Dave from Headgames. He does amazing work. Good dude.

@BP-fx3qc 5 лет назад

I send all heads to them from every motor i work on. Top notch.

@sergioespinoza3241 2 месяца назад

The camshaft can be installed on both sides the upper and lower can be changed

@JustAnotherAlchemist 2 года назад

Man.... the process for getting the case apart; there by getting to the crank, rods, pistons, and what have you has to be the single most convoluted collection of steps I have ever seen. Not looking forward to doing this myself some day...:/

@RobertNES816 5 лет назад

These engines are like Suabru's biggest blunder lol. A blunder that lasted for almost 10 years! Oil consumption, piston slap, blown headgaskets, rod knock from oil consumption.

@proximitybeejay3673 2 года назад

Avid fan but you couldnt be more right, so many design flaws and the 5speeds OMG

@rattler1014 3 года назад

Could you rebuild a Subaru XT6 engine

@stevebarnette 5 лет назад

Anybody can take an engine apart; putting it back together again is the hard part.

@eysteinbegby4298 5 лет назад

Steven Barnette no shit.....

@codymoncrief8478 4 года назад

The crank pulley in my instance does not want to pull off without a fight. Will see how it goes tomorrow

@laohantun7404 5 лет назад

Thanks buddy......I've been wanting to know for like 10 years ago....

@elhamoumiyoussef9353 5 лет назад

Thank you so much from Morocco.

@junierasrouse3187 3 года назад

Am a fan of this shows

@rocksnot952 2 года назад

They seem to have a different transmission, too. My trouble has been finding a transmission for my engine.

@thatguychris2536 5 лет назад

Alot of poeple complaine about subarus being complicated but thats wat makes them fun

@DavidVoxDem 5 лет назад

Keemstar doing engine rebuilds now?

@markcultivo4423 Год назад

Watching from Philippines,.

@moshizle173 2 года назад

Subaru forester 2011,its my favorite

@29rururu 2 года назад

Where is your shop. Look s like He knows what he does, very good video

@Barrenchats 5 лет назад

I disassembled a 2001 STi Limited Wagon block the case half 12 point bolts almost broke my 500 ft lbs impact gun then with a cheater 4 foot pipe they almost broke me LOL

@djcybercorgi 2 года назад

Inline 4 cylinder engines you can change the pistons out without even removing the block from the car...

@DanielLee-rb4me 6 месяцев назад

I find it helpful but you guys speed up where I need help to take off so I have no clue how to

@Ricky-mouser 3 года назад

Heard ring lands referenced twice, waited for it, and you didn't even show the pistons

@hectorperez6293 2 года назад

nice video,Im looking to rebuld a 2011 outback engine

@ryanjoemmanbaks1301 4 года назад

Great video but if the cam bolts get stuck you can always use an 11/16 turbo socket :)no need to cut em out

@kahlinkoertner5241 5 лет назад

So watching a bunch of videos... It looks like the tear down and build of these are going to be the same along the different variations IE EJ255,207,251,... Whenever people are commenting and talking about EJ25 or EJ20 they are just referring to engine displacement? I only ask because I am considering rebuilding my EJ251.

@BP-fx3qc 5 лет назад

Nothing drastically different across all ej's. Aside from sohc and dohc.

@3drinksin273 5 лет назад

This video is fabulous. THANK YOU!!!

@Rafael-ql4dd 5 лет назад

I used j20 cylinder heads for the j 25 turbo engine, but I did somes modifications with the j 20 cylinder heads to work with the engine j 25

@markmadrigal105 4 года назад

How do I get nam to work on my Subaru? Dude is a genius

@kumarsonu4848 2 года назад

Great work from a great technician Can someone help please Best way to seal the EGR TUBE THREADS? 2008 outback

@MarcosVinicius-hk7ue 5 лет назад

Faz um vídeo com legenda em português!!! Falo de Curitiba Brasil 🇧🇷

@billychi6961 Год назад

6:44 wrong, my USDM ej205 has the lugs for the camshafts so it is no exclusive on jdm engines

@paulneumann7739 Год назад

Wow. A lot of moving parts!

@jeremyburpee1543 3 года назад

Killer video! I feel like rebuilding mine will be no prob with this video! But I'm curious about the steps that you fast forward past right before you split the block.. why didn't you show what to do there?

@pricelessclips 2 года назад

I worked with cars for several years but nothing like replacing piston rings and seals. I got 2010 subaru forester 2.5l and I probably need to do that soon. I already got low compression on cylinder 4 @70psi. I didn't try the restore lubricant yet but if I try to rebuild the engine with new piston rings and seals and learning as I go with repair guide and some help... How long would it take me. I want to learn this stuff, do it right and use my subaru to learn it.