Why Subaru Engines Blow Up!

We've talked about it in a lot of our videos but now we've got a whole video dedicated to it! There's a reason why Subaru owners are some of our best customers!
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[@rideepicdriveepic]

Mike is the Bob Ross of engineering.

[@rickyv3911]

Happy little turbos

[@TheLlamasThrust]

😂

[@mikewright7390]

So much this 😂

[@mikeyo1O1]

His voice makes my hair tickle.

[@connorwolbert9591]

This is sooooo true!

[@brandonlittle6444]

Worked in a cylinder head shop. You could run an entire business off Subaru engines alone. Same design 25 years later.

[@TML34]

😂😂 I hate subie engines. 10x the labour for half the power and reliability of anything else.

[@TassieLorenzo]

@@TML34 Half the power? The EJ20 turbo was a perfectly good engine... 30 years ago. 😊 Honestly at the time the Version 1 through Version 6 Subaru WRX STis were a fast car compared to most. I guess the Volvo B20 or Ford Cosworth engine could hold more power, but they mostly didn't have AWD (and the AWD systems in the Sierra Sapphire and Escort RS were not that great, AFAIK?). (Of course it is a little bit of a shame that WRX STis have only gotten slower since then!)

[@Serpentis666]

@@TassieLorenzohe’s right, half the power because the motors are junk… Subaru at its best couldn’t hold a candle to a Honda motor at its worst…

[@allanhope7018]

@@TML34 If built properly, they're great. One of my STi's has been running 619 whp on 35 psi of boost with 91+meth dual fuel for about 25k kms now. No issues yet. I'm running closed deck case halves, though. Build was 4 years ago now. I don't drive it too much as it's a summer weekend car now. I have another STi for my daily that's mostly stock.

[@chandlerbraaten847]

​@@Serpentis666 the ej207 is pretty good and is what Subaru used in all of thier racing applications. Unfortunately the US never got them as usual.

[@ZachDxn]

Bro, honestly. This was one of the most concise and honest breakdowns of Subie engines. The good, the bad, and the ugly.

[@kennethrhodes7143]

"Why Subaru Engines Blow Up!" is a Very Broad and Untrue Statement. The 4 cyl is very popular with small airplane builders because it's so Reliable. And the Subaru 6 cyl. is a fantastic engine, Subaru et the engine blocks from Porsche, it's the one used in the GT3.

[@bo-dine7971]

@@kennethrhodes7143 It's a somewhat true statement, however only with context, that being terribly modified (boosted) ones & ones owned by idiots revving the F out of their engines with no load. Aeroplane builders always use engines in the stable area, in fact most aeroplane-designed engines look terrible hp/liter, but that's because they are run in a different way to what is in vehicles, especially the RPM range, which is extremely narrow in comparison for 90% of the time. So, yes, good engines, very good form of combustion engine in general (all horizontal engines are just amazing imo..) but people will be people & do dumb stuff.

[@kennethrhodes7143]

"Somewhat true" ? Ya, and "If" my Aunt had Balls She'd be my Uncle! @@bo-dine7971

[@GregoryCunningham]

I didn’t hear anything good…

[@ZachDxn]

@@GregoryCunningham he said the cranks are actually really strong and can make really big power stock, which is good I guess

[@atari664]

I don't even own a Subaru, yet thoroughly enjoy listening to Mike talking about them.

[@StephenBrewer89]

Same here man!

[@ryancapewell6504]

What up my nga

[@donniev8181]

Same here lol

[@thornburyrecords]

Not owning Subaru is why you enjoyed it

[@eskieman3948]

@@thornburyrecords Stupid.

[@DoubleOSevan]

I own and have owned many Subarus. I love them, but sometimes it feels like they don't love me back.

[@aaronbryan5095]

One-sided love, probably one of the worst kind of relationships 😂

[@RIPdeebo143]

😅

[@Maximus20778]

no shit its a machine.

[@GamerMomentsToo]

@@Maximus20778🤦🏾‍♂️

[@eskieman3948]

@@aaronbryan5095 You certainly have a lifetime of experience with that....

[@notsam498]

God i wish i had the money to have this guy build an engine. Humble, knowledgeable and sharp as razor.

[@eskieman3948]

HAHAHAHAHAHAHA!

[@briangriffith3985]

he's a legend

[@jobobperry]

Perfect voice tone to tell you it's going to cost you $8k to rebuild your engine. @@briangriffith3985

[@infiniterift]

Subaru guys are some of our best customers! 💀😂

[@jeprodigalson792]

Glad I don't come to your shop or anyone else I know. Bunch of low IQ apes.

[@Cbgrandtheftauto]

99% of broken Subaru's are caused by broke Subaru owners.

[@shawnstrong733]

Dam hit me where it hurts 😂

[@randoorlando443]

Man it feels good to be watching motoiq again, I swear this guy could charge money for the amount of knowledge he drops every video I swear I have learned more about all the technical stuff from this guy over video than I did two semesters with my college professor in a shop. Gotta say I love your videos mike.

[@Eduardo_Espinoza]

yep, it's a good refresher too, everything he says checks out! :)

[@Anarchy-Is-Liberty]

Umm... 141K subscribers, 43K views in 2 days... I'm sure he's getting paid one way or another!

[@gerardogalindo8943]

I love how Mike explains all the shortcomings of an EJ with a smile

[@watchandjewelryloft4713]

It's like the nicest, "This engine is a POS," explanation ever. 😂

[@dub537h5]

​@@DaveP-uv1ml I'd rather see him smiling than see some douchey bro presenter. Why not just listen and not watch the screen? What a dumb complaint.

[@ronnieboucherthecrystalcraftsm]

because he bull shits on and over does it on street engines = buy his stuff $$$$$$ expensive !

[@psycheout4733]

@@ronnieboucherthecrystalcraftsm He's the epitome of ignore customer goals and build the motor to MotoIQ bottom line. Unsurprisingly, MOST people don't want to build their engine for time trials or drag strip builds but very mild, close to stock goals. Mike will tell you that's impossible, the only way to have a Subaru motor be reliable is putting $10k into it.

[@Nimoodles]

​@@watchandjewelryloft4713Except it's not and he even said so.

[@johnstutzer8664]

The man is giving up a lot of serious information for free. Much appreciated!

[@eskieman3948]

Would you bet your life on everything he said? If so... dead man walking.....

[@johnstutzer8664]

Every vehicle driver "bets their life" on every manufacturer, dealership, mechanic, tire brand, other drivers, etc - each time they leave the driveway. Your ? is a "what if" with no sensibility@@eskieman3948

[@jeffgTrialsBikes]

The bright side of you tube!

[@all-flat-engines]

If you put an old Air-Cooled VW case next to a Subie case you'll see they're not all that much different (structurally). When you think how one was built to support 40-60hp, the other to support 200-300hp, it becomes very clear why these cases flex/distort.

[@Levibetz]

Check out the Subaru EA engines. The pushrod engines I describe as like someone described an aircooled vw over the phone to an engineer. The transmission (that became the 5 speed) is very similar too. The ring gear ID is even the same, and dimensions close enough you could retrofit a subaru diff into a VW (I've considered it). But those EAs have a 3 main bearing crank like the VW too.

[@randoorlando443]

@@Levibetz As an owner of a 1971 1600 this makes me happy to hear, I always knew the motors where simillar but never knew they were that close. Now I see why they are so popular for swaps gotta say Im deffanatly going to get one of those feeling parking next to Subarus from now on almost like parking a old muscle car next to a new one.

[@Levibetz]

@@randoorlando443 Well the EJ is totally different, that's the motor this video is about. But the older EA is very similar. Nothing interchanges directly, but it's similar.

[@randoorlando443]

@@Levibetz ahh, I figured nothing would be interchangable I gotta say subaru motors are deffanantly far from my cup of tea heck really motors in general but I guess I can always look at subaru as big daddy vw in a way, Thanks for the info

[@MichaelAMangone]

I wonder how similar the water cooled Porsche engines are to an EJ, in terms of "idiosyncrasies"? I remember reading that the VVT in the Subaru 6 cylinder is a leased copy of a Porsche design.

[@richardsawtell256]

had subaru's most of my life , all my friends hate them, not the best engine but they fascinate me , i like the ej208 and 206 twin turbo , i keep them stock as they are my everyday cars , and have been reliable for over 10 years

[@ChrisWilliams-vm1do]

My tuned 2002 WRX made it to 345,000 miles. Transmission and turbo went out. Engine was fine. Best sounding 4 banger ever.

[@firstielasty1162]

I know sound is pure opinion, but in 4 cyls., I love certain v4's. Yamaha vmax, honda v4's with a 180 degree crank, panigale... also the cross plane crank yamaha R1's sound similar, and awesome. None of those really suitable for a car, unfortunately.

[@abuelb]

My 2002 Toyota Celica GTS went 405k miles and still going, can hit redline/lift all day long. Best sounding 4 banger Ive ever owned😂

[@minimumwrist3546]

02 was the best year.had stage 2 tune and replaced factory clutch after 180k miles of straight abuse 4.5 to 6k rpm launches regularly. Car continued past 200k miles until it was stolen and crashed into someone’s house. Then my boss where I use to work (Firestone) sent me a picture saying recognize this? a year after it was stolen of my car sitting on the alignment rack with new wheels on it still going strong. 02 wrx wagon rally blue. Now I have a Toyota GR Corolla. Shit is nostalgic!!!!

[@jonathanshaw8868]

​@@firstielasty1162 I have a vfr 800, awesome engine with a awesome sound. I think a larger displacement v4 would be a great idea

[@ahmedp8009]

Regardless of their failures, the STI is still my favorite and most fun I had with a car. Miss it so much...

[@Dragunov302]

Me too….got totaled by a drunk while it was parked. Never had a problem with it the 3 years and 40k I put on it

[@krown4d]

Another issue is 91 gas when 93 should be minimum to help with knock. Many states only have 91 available

[@BlackBruceLeeTheGreatDekuTree]

precisely

[@menumlor9365]

* my coworker after doing donuts in the snowy parking lot on a cold engine * “I don’t know why engine blew up, I ALWAYS baby my car. I guess Subarus are not reliable because this is my 7th engine now” True story by the way. 😂 🤣 😂

[@themadmallard]

this characterizes most subie owners that complain about reliability in my experience. meanwhile, going on 300k miles on 2 with stock internals over here....

[@menumlor9365]

That’s what I’m talking about bro. I never hear anything bad about Subaru. When I do it’s usually a spun bearings, blown block, ruined piston or connecting rod. Then I ask, what did you do?

[@jamespulver3890]

@@menumlor9365 Indeed, I think once you start tuning a car / doing mods, and then pushing it hard - IDK, I have a hard time taking that out on the car / car company. The STI, maybe if it's not holding up stock cause it's sold for that stuff, but the rest are sold as family cars. You start tracking any "normal family car" and I think things are going to break IDK.

[@jj4791]

A Subaru turbo cannot handle its own power long term if there is extended WOT use. Such as track days. They can handle AutoX or a track day here and there for a while.

[@themadmallard]

@@jj4791 autocross compared to an actual track(lets not conflate) is most rough on the tires, not on the whole car and the first 2 generations of WRX sold included free SCCA memberships from Subaru. But can you name a commuter 4-door within affordability of 80% of car drivers that could handle the torment of a track day?

[@jimandmia]

This gentleman has all the experience to come across as 100% accurate. He speaks with no prejudice but with reams of knowledge.

[@JohnComeOnMan]

Overwhelmed by a feeling of zen listening to this guy.

[@jvepps]

Boxer engines are the only reason I don't own a Subaru. The cost to keep one on track just isn't worth it. You know if you know.

[@ToeJammer-ge2zs]

$20,000+ for a mild IAG build really hurts the soul when you start looking at what other platforms are doing with just basic bolt-ons. That 20k can go pretty far into suspension/tires/safety. *Caveat*, if you need AWD there isn't much choice.

[@yamahaSHO]

I tune Subarus and always try to make people understand what was said in the video and explain the exponential dollar curve on modifying Subarus. I no longer have one because of the motor. Hell, I love the new BR-Z/FR-S and briefly considered buying a brand new one. I couldn't do it because of the engine. There are 20 year old NA Honda motors I would rather have in it.

[@stevef3521]

@@yamahaSHOToyota has announced they’ll be ditching Subaru’s engine in the GR86. Not for a couple years though.

[@jvepps]

Porsche block/case design is much stronger due to being higher output engines. @@DaveP-uv1ml

[@eskieman3948]

@@stevef3521 Link, please.

[@OuijTube]

This is the most relaxing discussion of Subaru engine building

[@Disco_Potato]

Had a 2011 wrx and a 2013 sti. Both had bone stock engines their entire lives. No power mods, just suspension work. WRX blew engine at 103k, sti at 88k. Both had ringland failures. Have since only got back into subarus with NA FB engines, but still have that nagging feeling that something will go wrong.

[@pocketpc_]

FA/FB engines have a much better piston design, you're unlikely to see a ringland issue. Subaru thankfully learned a lot from the EJ.

[@MineZilla123]

Bonestock isn't good unfortunately either. Best results I've seen are quality built motors by a builder that truly knows subbies like Mike and how to properly build and measure/spec boxer engines out, and just mild performance levels of tune, so building them stout and then running within 15-20% of the stock levels, the engine is barely being pushed more than stock but still wakes them up. And then quality aftermarket parts, fasteners, and the engine built slowly by hand instead of a assembly line, fully blueprinted, balanced, and torque plates + arp fasteners and ATI or Fluidampr balancers and better headgaskets and then either custom closed deck plates or epoxy fill, unless using one of the less common closed block decks they have. Then stringent oil and coolant changes according to schedule for severe maintenance schedule. And the best tuner you can afford 😂. Lots of money but with a unique sound and feel makes it worth it if you have the money

[@TassieLorenzo]

Those were both 2.5 US models right? I wonder if the 2.0 models fare better?

[@aaronbryan5095]

You already had bad experience with Subarus yet you still went back to their brand, no offense but does logic not exist in your head?

[@user-xw4hn7lb3x]

Get a real car. A corvette C7.

[@LittleShmuplet]

The guy coming into the shot at 16:34 then turning around is so funny

[@TrippinBusa]

Just stumbled across this channel in my recommended feed, subbed. This gentleman clearly loves engines and sharing knowledge.

[@kurtisstaab5762]

Mike is the best. I could listen to him for hours. Any thoughts on the FA24??

[@dannybendtsen3033]

The fa engine is great

[@supers5271]

Love the Lancer just in the background if a video talking about their rival’s engines

[@brandonmiller2460]

Loved the technical overview paired with subtle humor sprinkled throughout the video. More of this content please 🙏🏽

[@adamproductions4529]

A simple 4 cylinder is hard to mess up, but when turbos get involved it just introduces more potential problems.

[@bobbyparesh9031]

This man should be protected by the Secret Service Valuable knowledge he has

[@exothermal.sprocket]

Shhhhhhh.....

[@miamibitch305fl]

So tired of people saying “this man needs to be protected” like as if you were in a higher position. Boy you need to be protected. No credentials don’t get you credit.

[@TopJoo7]

😂

[@bobbyparesh9031]

@@miamibitch305fl we just like cars , engines and wrenching am sorry if you didn't understand the humour behind my comment

[@salsasnacker]

​@@bobbyparesh9031I think his mind is like that recommended Subaru timing... Retarded 😂

[@fredastaire6156]

Man! This was a super helpful and informative video. Thank you so much for sharing this. I'm saving this to my favorites for sure!

[@istp1967]

I got 2010 SH Forrester -- 2.5L aspirated not turbo. Hasn't failed me yet. I've tweaked it a bit; after market ECU, NGK electrics, Cat-back exhaust, bigger radiator for cooler running, slotted rotors all round etc. just no turbo. Done 4 cross country road trips; never missed a beat.

[@graemescott1140]

I asked my dad why Vw bug flat air cooled lasted so long he was like” they had like 70hp son”

[@yowie0889]

See also a lot of "long lasting" Toyota engines - very low power in stock form compared to the strength of the engine.

[@roddydykes7053]

@@yowie0889everything is overbuilt like hell at Toyota and that’s why my ES350 is the most boring thing to drive ever

[@eskieman3948]

No, they didn't have "70hp" - they had much less.

[@gpalmerify]

Sooo, maybe don't build a Subaru engine past what it was designed for unless you engineer it? Personally, I avoid ALL turbo engines.

[@fabelgamer7410]

​@@eskieman3948 More like 30-40

[@alstefan4814]

The most best person to explain all Subaru’s flat 4 faults, keep up the good work sir, from Melbourne Australia 🇦🇺👍

[@BRADLEY_RYAN]

Such a great video. So much quality information!

[@HyproTube]

Where has this channel been all my life? Excellent content. Subscribed and can't wait for more 🎉

[@djmystery7235]

This dude looks so happy just to be explaining this to us. I love it, I wanna be his friend

[@tetttettamilli6761]

@MotoIQ - Great information; definitely warrants a rewatch to fully digest everything.

[@Penswordman]

Mike, you've got a natural talent for presentation that you might not be aware of. I'll just say that you come across very well and -invite- people to listen, which is a rare quality. Just keep rolling with it buddy.

[@Xythos]

you've helped educate me so much that i've been able to apply and use the information i've learned and get a new job. Thank you Mike!

[@rickc3783]

Oh ojoi on o I I on in in iioiioo io ooooooo iol

[@evanforst7272]

⁠@@rickc3783oioiiooiio j ojoiioioio? On oh l oioioooo ll yeah?

[@chriso1373]

Yet another knowledgeable channel mentioning Out Front. I'm really glad i decided to ship my block out to them. Another great video Mike 🤘🤘

[@leviscott8519]

MAN Mike! Every video of yours I am more and more impressed with your deep understanding of Performance+ engine building. You are very good at explaining complicated aspects in a way that is easier to understand. You are a Made genius! Thanks for all your teachings! I really appreciate you My Brother! You are giving me a deeper general understanding for mopowababy! 😎👍

[@chainringcalf]

We only needed the first few minutes, but I'm so glad we got the full thing!

[@GrumblingForesight]

Got here due to the algorithm gods and was more than pleasantly surprised to see Mike Kojima’s familiar but slightly older face on the thumbnail. As a former devout reader of Sport Compact Car magazine in the 90s and early 00’s , I was exposed to Mr Kojima’s work in the past. It sure feels like meeting an old friend / family member after more than a quarter of a century.

[@imobul7829]

Always the best information given . Thank you all the way from South Africa.

[@SubaruJeff444]

Thank you, I'm going to watch this a few times. So much Valuable Information.

[@eppyz]

This man is so knowledgeable, seems so humble too. Would love to just talk cars with him imagine how much you could learn in just one day..Closest I will get is watching his videos, and I appreciate you taking the time to explain things the way you do to us "Average Joe's" 👍

[@TurboHappyCar]

Awesome content! Thank you for putting out these videos. 👍

[@trevorroose7904]

Thank you for the information. This is pure gold!

[@C-M-E]

I've almost always attributed EJ early death's to oiling problems in their stock forms. I'd not considered the ring issues, which is a solid point. Unlike a traditional layout design--where other fluids to include a gas/air mix doesn't mind laying on it's side nearly as much--the oil travel and performance certainly does! I have no idea how some of the hillclimb guys in Europe keep 800hp engine together, unless they just accept that a rebuild is necessary after every event vis-a-vis quarter mile drag engines.

[@1madmaxx80]

Have you ever been to a drag strip? Basically only top fuel do teardowns between runs. There's lots of people who drive to the strip, rip 9/10's all day and then drive back home.

[@benjaminwatson7868]

They just accept their fate on the rebuilds part, I mean they’re hard racing a 2.5l engine that makes 800hp it’s not gunna survive that well in majority of engines that displacement or smaller

[@hvacrwrld1402]

Baffle that sump gents....

[@jackSTi410]

I’m a 17 y/o subie owner and builder, did a built motor build this summer and I completely agree on every single point, you really do have to be a pretty specific type of car enthusiast to want big power out of a subaru 😂

[@brettyh1]

Great info in these videos. Appreciate you Mike

[@samirfarah640]

Great video all the picture and examples really help understand the terminology 🙏

[@Elias-ux3yy]

I’ve never felt more informed, understanding and relaxed in my life … wish my uni lecturers were like this but they don’t talk about scooby engines they say fancy business words and waste my time and money 🤣

[@richardlewis4288]

Don’t own a Subaru but a pleasure to listen to! I subscribed.

[@fredpineda6006]

I like how this guy gets to the point so quickly and simply.

[@Beek88]

Thanks for taking the time to share your knowledge! I'm a ls guy but a machinist as well

[@bwray5054]

Great Video, honest technical reasoning. It also made me happy with my choices for my new engine. My family had a Subaru dealership from 1971 until the early 80"s, I grew up with them and still love them today.

[@RAD-RC]

My buddies VB almost blew up a few days ago because his turbo oil cooler (idk its technical name) had the two bolts that seal the gasket on the bottom of the turbo completely back out and cause a massive oil leak. No low oil warning just a shitton of smoke. When we took off the metal undertray, there were 2 bolts just chilling standing straight up like a cartoon. We realigned the gasket and put the bolts back in. It had lost 3.5 quarts of oil lost in a matter of minutes.

[@GlycerinZ]

Really enjoy your videos, Mike!

[@caseynewsom1850]

I just want to say thank you for producing such an honest and informative channel. You’re a saint and a scholar sir

[@vmmramos]

26:44 My cam timing: "Big things coming" Also my cam timing: pulls up with tinted windows and a hoonigan sticker

[@christianallen9653]

For the algorithm! More people can use the knowledge shared here. Thanks Mike and gang for everything you do

[@miguelacosta4509]

Great information. Thank you Mike

[@SubieDougz]

“Now the rest of the car is pretty good just have to watch that engine” idk why I found that funny 😂😂😂

[@kaloyancholakov3725]

Subaru engineers has to hire you and listen very carefully to improve their engines.

[@BentoRunner]

They don’t care. Prior STi owner and current Type R owner now. I dunno, they just lost it.

[@suryaprihadi2258]

I dont even own subaru ever, but the tech know how explained is sooooo good. Thank u Sir❤

[@splaw120]

Thanks Mike! Looking forward to the next video 🙂

[@Doc1855]

Most of my wife’s family buy Subaru’s only. They live in Montana and buy them for their superior traction, safety and accident avoidance. One of my brothers and sister’s inlaw drives 50K miles a year, so every 6 years they buy a new Outback, because after 6 years it has 300K miles. They change the oil every 5K miles and every 35 - 40K miles they have the CVT fluid changed. All of her miles are highway mileage where they seldom drive over 70mph. A few years ago my wife had been wanting an Outback for many years, so for her 50th birthday I bought her a 2 year lease returned Outback. It had only 5,600 miles. It now has only 30K miles and it’s 5 years old. She fell in love with the Cinnamon Brown with the warm Ivory interior. Before buying her the Outback she’d have to park her Camry 3-4 months every winter because of the 5-7 feet of snow we get here in a very mountainous area of north central Washington state. She would then drive my 4WD Toyota RAV4 and I’d drive our 11 Ford Ranger XLT super cab 4WD pickup. After buying her the Outback, we were so impressed with the traction that I decided it was time to replace my old RAV. We had to put studded snow tires on my RAV every winter, whereas she drove year round on her factory tires on her Outback. In December 2022, I found a 2019 Forester Touring that had only 4,700 miles. It’s a Certified Subaru and is the biggest LEMON ever produced. I started complaining about it at only 5K miles and BEFORE the Factory Warranty expired. It’s been into Subaru service department many many many times. They thought that they found the problem After the warranty expired and even though I’d been complaining about it for over a year and the warranty expired, Subaru wouldn’t pay to have it fixed. So it cost me $1,600. Even though I spent that money for a new DCM the main computer, it’s still doing the same things and now my mpg has Dropped from 24mpg, it’s now down to 20mpg. It’s the 2.5L 182 naturally aspirated engine. Hell, my RAV had the 268hp 3.5 V6 with a 5spd automatic transmission and I was getting 27mpg in it. In 25 the RAV. Is supposed to be redesigned, so I’ll wait for the 26 year model and I’ll sell my POS LEMON forester Touring and buy a new RAV AWD Hybrid. My Forester is my First Subaru and it will be my LAST Subaru Ever ! As far as I’m concerned, Subaru can go 🖕🏽🖕🏽🖕🏽 Themselves

[@danmarjenka6361]

It would be interesting to compare side-by-side a stock Subaru engine with a stock flat Porsche engine to see how Porsche reinforced their castings.

[@NoName-tf2et]

For sure! I always wondered why Subaru struggles where Porsche has endured reliably. Just this video alone, you can tell there are a-lot of cut corners though. Porsche don’t fuk around.

[@bennylloyd-willner9667]

​@@NoName-tf2et I'm not that knowledgeable, but isn't there some price gap that makes the comparison a bit weak? To me Porsche and Subaru don't play in the same league so cheaper designed/built Subie engines isn't a big surprise.

[@Reel-Jimbo]

​@@bennylloyd-willner9667 you can also argue the guys buying porches arnt modding and tunning the hell out of em

[@danmarjenka6361]

@@bennylloyd-willner9667 I think Subaru should partner with Toyota to make them a flat 4. It would last 300k miles.

[@bennylloyd-willner9667]

@@danmarjenka6361 why not, they did the BRZ (or something similar) together. The head gasket thingy that is popular to say of "all Subarus" aren't true of all engines tho. I would like stats on the longevity of all manufacturers cars in "percentage of distance travelled" or something similar with price included in calculation. Often stats like that even things out.

[@kiritowow2736]

great video, I will never let my STI over 300whp since I will do track days a lot, all the money I will put is on oiling and reliability and cooling, if I wanna big horse power I will simply change platform

[@ky1e200]

Grate run down , thanks for sharing your knowledge

[@sw00001]

Very informative video Mike! Looking forward to the 4G63 video!

[@dieseleddie3945]

One of the best videos I have seen on just explaining issues with an engine not just because it’s a Subaru motor. A lot of what was explained can been applied to many motors especially the part about using head studs. My hat off to you sir for letting the you tube community understand about what happens to your cylinder bore when using studs. A lot of fools who think they know how to build or solve head gasket problems think that head studs is the answer. Using studs will help prevent blowing head gaskets especially on a diesel engines but that cylinder distortion will result in a shorter engine life. I drive a 2003 F250 with original head bolts and gaskets with 420k mileage on it currently and will hit half a million this year. Wouldn’t be able to go much past that with head studs and not start using/burning oil.

[@motoiq]

No one ever believes me!

[@MarioGarcia-fi2lh]

I love the information, I'm about to rebuild a 1.8 turbo. My question is do rebuild this and how much would charge me to rebuild this and where are you located thank you.

[@MarioGarcia-fi2lh]

I was nervous when send my question but it was mainly, it you rebuild my 1.8 the way you explain it in your video.

[@nathanielgates2863]

Im making 286whp and 300wtq in my 2011 wrx... just street driven and doesn't get pushed too hard ever. Hopefully im safe. It has supporting mods like the oil pick up and cylinder 4 cooling mod.. gonna put an AOS on too but tired of being scared of owning a Subaru lol. Despite the constant fear of engine issues I love the character of the car, the sound and the AWD system.

[@motoiq]

If it is tuned conservatively you are fine.

[@nathanielgates2863]

@@motoiq It is. Appreciate your reply!

[@UCMtouch]

both my NA Subaru's blew.. stock, maintained well.. 03/08 My FRS has been okay though FA20. it's a case by case sure, though won't be owning another from my experience...

[@stevef3521]

@@UCMtouchstock FRS with FA20 nearing 160k miles. All original, I drive the piss out of it. Made sure the previous owner took care of it. I follow their maintenance intervals, use the old black MIJ Subaru oil filters. The newer blue filters sold/used at dealerships are taller but thinner in circumstance. I’ve heard they’re made by Fram. I also use Idemitsu oil.

[@bailey.nt86]

I have a 2011 STi. It's been on a downpipe/intake for about 85k miles. Conservative tune. If anything it's slightly rich. I run Rotella 5-40 it's whole life. I haven't had any issues. I don't abuse the car or track it. Spirited sprints, no clutch drops etc. It's still running strong. For now.

[@isentropical]

Great concise video explaining the idiosyncrasies. Saves explaining it to anyone who asks, just send them to this video!!

[@tirespark]

you’ve taught us alot, thank you

[@chrismathes3647]

Mike, you're comments. Remind me of Jay Meagher from Real Sreet. When he talked about how he was building V8 engines and all of a sudden, there were so many people trying to get him to build EJs they'd apy twice as much for an engine that took half as long 👍

[@russnoneya6843]

You are a zen master of engine building KZbin. I’m not even into the Japanese stuff but I watch to learn and your calm demeanor is refreshing in a sea of obnoxious KZbinrs.

[@deebee9751]

Well said and perfect detailed info we all needed to know. Thank you sir. Your the best :)

[@theodoregarland3509]

Great video! Explained clearly and at a level pretty much anyone might be able to understand. Thanks!

[@stevebarnette]

I should have skipped college and just hung out around MotoIQ; would have learned so much more. Awesome channel.

[@bullnukeoldman3794]

Well done. I enjoy watching someone who absolutely knows what they are talking about. Unreasonable expectations on what was originally designed as a family car into a turbo charged monster will cause problems and expensive disappointment. 61hp/liter for the stock NA engine to 121hp/liter for the factory STI and then expecting up to 320hp/liter to be reliable is a pretty good stretch as a reasonable expectation. LOLOL!

[@kadinketterling7276]

Everyone with an EJ motor should watch this, all very in depth and unbiased

[@JulianGonzalez1974]

I had a 2008 WRX sedan that I bought brand new. I later upgraded the ECU, did a VF52 from the 2009, intake and exhaust. It was a daily driver so I didnt want to go to crazy with mods. I did all the mods at about 30,000 miles. We bought it in AZ. We lived up in Prescott and I had a LOT of time spent above 100mph. I even tracked it a few times at Big Willow. I only had to do maintenance on it. I had it for 165,000 miles and just sold it last year.. I replaced the VF52 once. Power Steering, AC condenser, clutch and a wheel speed sensor when I hit a chunk of ice....I live in Denver now. I drove it hard and often. I loved it. Thinking of getting a 2011-2014 STI sedan.

[@irsever]

I have no interest in Subarus and hung on every word till the end. You're the man Mike

[@syafiqzzainal6205]

I love to see moto iq do a comparison between subaru and Porsche boxer engine

[@roddydykes7053]

Good idea

[@oskarloopy3922]

Awesome video!

[@coltjeremiah2014]

Always love your guys's content. I've got a twenty thirteen s t I and it's helped me immensely.

[@JordieG8]

A cast iron EJ would be fun to play with.

[@MacCready_]

Every Subaru guy I've talked to gets mad when I say their motors aren't as tough as some other brands and they always say the EJ motor is bullet proof.

[@ontarioman6301]

The owners tend to lie. This brand owners will never admit the truth😂

[@MacCready_]

@@ontarioman6301 definitely

[@HEXAN-tv9eu]

Then you found some crazy fanboys, everyone knows the EJ25 is the worst, I don’t like turbos anyway so I’ve gone for the H6 3.0R

[@eskieman3948]

@@ontarioman6301 Well, I own one, zero issues, and I'm happy with.... and I'd beg anyone to call me a liar.

[@garryh3126]

Ive had a blitzen now for 18 years from a EJ 20 twin turbo 2 litre from Japan regular service high grade synthetic oil and factory filters and now it's done 240 thousand Km. Only ever did the cambelts and brake pads since I've had it and doesn't burn oil from oil change to oil change no leaks and motor still tight when switched off on ignition.. Personally I can't fault the EJ 20 engine to me it's truly reliable and cost free and I always use 98 octane gas

[@JermJermFlores]

Love the new camera quality!!!!

[@turbolag5107]

This is soothing to my former subaru enthusiasm and my short but extensive engine machinine past.

[@davconelectric]

Excellent advice.

[@newttella1043]

Glad I found this video. I'm trying to talk my kid out of buying a used turbo charged Subaru. He doesn't have the money for repairs and needs a reliable car for work.

[@HEXAN-tv9eu]

If you are in the snow I’d suggest the 2010 or so 3.6 legacy it brings the power of a WRX with so much less in the way of reliability given its not turbocharged and isn’t being pushed hard. Well it depends on the budget you have as you probably are looking at older subies, then I’d suggest the 3.0R if they are dying for good power or a Honda. I love subies but Honda is the king of cheap but indestructible, that old 1.6 single cam will never fail

[@cecilthecavetroll9743]

Get the kid a Honda Prelude from a dry climate w/ no rust. Fun car, 200hp, great handling, reliable.

[@bryanribey]

@@cecilthecavetroll9743I feel like a 9th or 10th gen civic Si is a better bet than a prelude. Preludes are pretty old at this point

[@cecilthecavetroll9743]

@@bryanribey true. In that case yes, a 9th gen Si (my favorite) or even perhaps a 7-8th generation Accord Coupe.

[@jethzeeltorres9727]

Love this guy . So professional and super educated. ❤

[@toplistcrew7645]

The main thing is don’t drive it like you stole it. Let the car warm up, check your oil, change your oil, do your preventative maintenance and follow that scheduled maintenance they give you in that little book in your glove box.

[@Taras-Nabad]

I enjoyed the video. What I got from it was for racing applications, the engine needs to be modified to address the weak points. For non racing application, there is absolutely nothing wrong with the Subaru engine. The same advice would apply to racing a small block chevy.

[@jeffrey3498]

Exactly, just another motorhead clown who talks shit about Subaru

[@HILLBILLY_HARD]

I bought a 2002 Subaru WRX that had rod bearing failure back in 2012. Rebuilt it myself, had the crank turned and ran underside rod bearings. That thing was awesome. Something happened to one of the timing belt pulleys because I was broke and didn’t buy new ones when I rebuilt it. Timing cover exploded and parts landed all over the highway. I sold the car and haven’t had another turbo Subaru since then but I plan to own another one eventually. I daily drive a 2000 Impreza outback and it’s a beast but I miss my WRX!

[@sezwo5774]

I daily drive a 2000 2.2L Impreza Coupe and it's wonderful, ...with a perfect balance of power and economy. I believe high zinc oils contribute to the destruction of turbo Subaru bearings as they are silver or silver plated and zinc in presence of acid corrodes silver. It is a known issue in locomotive engines with silver bearings- these require zinc-free oil. Subaru mentions to use 5w-30 Resource Conserving oil only. The 5w-30 RC oils category limits zinc severely. The first thing nearly all WRX fans do is put a thicker more zinc loaded oil into their engines. Thicker is fine but nearly all thicker oils have more zinc than RC oils. What oil did you use may I ask?

[@HILLBILLY_HARD]

@@sezwo5774 I ran full synthetic mobile 1 if my memory is correct

[@sezwo5774]

@@HILLBILLY_HARD In that case you are off the hook, unless it was the previous owners' oil choice (if used car). Shell Rotella T6 is very popular among Subaru enthusiasts and it's loaded with zinc. I have a 2013 Forester XT, ...I use a mix of NAPA brand oils as they are Valvoline but with a weaker add pack, read: very little zinc in their thick 15w-50 synthetic oil.

[@sezwo5774]

@@HILLBILLY_HARD Haha, like your channel.

[@HILLBILLY_HARD]

@@sezwo5774 thanks

[@davehigg3244]

Very knowledgeable technician and well explained...thanks for the vid....I'm just a daily with an fb25 good info tho on the performance side of things! Cheers.

[@endrestadaudun]

You look so hapy it makes everythinmg so much nicer :D keep it up