Love the time taken for English for us thks kindly from Australia

I totally enjoy your engine builds. Keep up the English content

Thank you for the english. I really enjoy your channel.

Ringland failure. Best channel on youtube. Thanks for the English. Awesome!!!!

Great video. Detonation killed that piston is my guess, which brought up the temperature and melted it. Keep up the awesome videos Andre!

someone didn't secure the piston shaft, shaft came lose, went straight through the piston head. Love this channel! Amazing work!

"600 hp, and a lot of newton meters" that made me laugh out loud, keep up the great content, Americans thank you!

Another great video one of the best KZfaq channels

Bro! I can understand you now! Thanks for the English

You explained the failure very well. I was able to understand. Thank you as always for your time and effort. I'm still dealing with that an oying po448

Love your videos dude. Thanks for the English!

Thanks for the English, Keep that great subie content coming

Detonation hotspot, melted the piston, compression ring stacked, due to thermal expansion. It had to somewhere, so it went into the bore. Leading to more damage, more debris, cut a hole in the piston and by that time the cloud of oil gave away that the engine was kaput...

Great Video! I have successfully swapped out a ej253 for a ej203 in my 2004 Outback. Only got 148,000 miles out of the ej25 before the head gaskets blew. Hopefully the ej20 lasts longer than that. Now I move on to my 2003 Outback with same issue....

The best KZfaq channel...thx

Awesome video mate. Thank you.

Very informative my friend! I'm watching from New York. Thank you!

Ich habe keinen Plan was so ein Loch in den Kolben reisst, muss noch viel lernen im leben, aber der erste grosse schritt ist bald getan, in 2monaten sollte ich mit der Lehrabschlussprüfung durch sein. Bin auf jeden fall auf die Auflösung gespannt! Lg Reto 🇨🇭 🇰🇪

Thank you for your commentary! sick onboard, and end ride!! Can I find more of it?

piston had ring land failure well done thank you sir !

Thanks for the next interesting video!🤙🏻

Thank you Andy for the English, you are the best

The little end broke. thanks for the video. :)

Beautiful!

Omg der Hatch, was hast Du da wieder erschaffen 😍😍😍

Great video! Greetings from Uruguay

Your english is great! Nice video

Hi love the videos and the information. I just wanted to ask on the close deck strocker do you still leave position 3 thrust as well as position 5 or just position 5 thanks keep up the good work

I love the videos..👍🏻

I want to send my motor to you to build mine.You do very immaculate work bro :)

That Driving Clip!!!!!!!!!!!!!!!!!!!

Thank u for talk in english! Nice builder!

when you modify the old closed deck ej20g factory block, to fit the #5 thrust bearing crank, do you still use the #3 thrust bearing together with the #5 thrust bearing ? or you put a normal main bearing where the #3 thrust bearing used to sit? amazing videos!!

LSPI (super knock) is what I believe happened to the piston based on the location and shape of damage near the ring

KNOCK KNOCK KNOCK! detonation in that cylinder blew a hole in the piston. I have one that looks the same haha

Love your video!!! The piston seem to be melted like running too lean on the tune or a bad injector.

@5:50 this is the time to put 2 set of thrust bearing...at no.3 and no.5 crank bearing position... Good for people use super stiff clutch spring...

Lean mixture

Great video! Bet the piston hit a valve repeatedly on a hard hill climb. Cheers and Ciao!

Buena explicación eres un maestro de primer orden. Andy saludos desde España. tu seguidor José Antonio Gálvez Galán.

great videos! it was head of valve, which broke away into the cylinder! am i right? or candle electrode burned out!

I have a question. When honing the cylinder in that fancy machine how critical is it to use a torque plate to simulate the clamp load from the head bolts while machining is done? Doesn't the case warp a little bit from that clamp load?

Awesome videos Bro👍😎 I think the valve drop in the cylinder 🤔

@7:10 is detonation due to running lean and melting the piston...check injector, and probably need bigger fuel rail, bigger fuel line..(with parallel fuel rail conversion as well)

My blocks running la sleeves it’s a open deck but basically a closed deck. o ring that biz my dude

Thank you for doing English, for us goofs over in Merica!

Timing belt failed ? Good video. Thanks Jason

Bigger turbo and other modifications with NO ecu re-map/tune?

Nice

Yo lets get it!

How do you clean out the water passages in that closed deck block?

Is that a clip of Claudio blowing that engine? Or testing the fix?

how much reliable HP can a stock-block ej20 actually take when still open deck but different internals?

Timing Belt snapped, then the piston hit the valve?

in the video on street it looks like 900 ps ... langsamm finde ich diese boxer richtig geil !

BANG BANG BAAAAANG!

Hey, ich tippe mal auf die Einspritzdüse, hat wohl zu wenig Sprit rein geballert und dadurch ist es zu heiß an der Stelle geworden..kp wär so mein erster Gedanke gewesen 😁 Gruß

Im guessing wrong ring gap for this application. Turbo exhaust housing could be a bit small helping to raise temps in the cylinders.

Der Kasten schiebt an😀

The piston damged was caused by broken-leaking injector which caused over heating the piston until melting point of alloy

Schönes Video und Hut ab das du alles in Englisch machst. Das sieht nach einem Kampf mit der Wand aus 😉 Ich würde denken zu wenig benzindruck oder einspritzventil nicht mehr richtig funktioniert. Dann zu mager und entweder loch rein gebrannt oder Ventil/kerze abgebrannt und reingefallen?

good job, this pistón dont have fuel or octane enough

The rod pin broke or slipped and the rod went through the piston

Great video. I'm guessing the motor ran way too lean too long with pre detenation and it blew up.

You don't have this issue on a normal engine because they step the sleeve at the bottom of the block and also on the deck then they mechine it or re deck it. Ive had this done on my FJ20ET engine

Which Sleeves it was? I think Benson Sleeves never move like this..

option A: dropped a valve? option B: snapped the small end from the conrod?

Ich denke der Motor hat geklopft also durch Wärme und Kompression selbst gezündet und damit den Kolben überhitzt und anschließend gesprengt.

Nice ))))

ring failure. either not gapped properly or not lined up correctly when assembled

I'm guessing a valve went straight through the piston.

in welchem modell gab es denn closedeck ab werk?

Would have to say that it looks like the engine leaned out and cooked a piston mate

ショートストロークエンジン。しかし、それにも増してコンロッドが極端にこれだけ短い！！！　これではピストンが大変ですよ！！！どれだけの横方向の摩擦力が掛かりピストンが揺す振られするのか想像出来ます。対策としてはオイル潤滑性を活かしピストンを守るす為に、スカートの長さ面責は大切であると思います。、シリンダーブロックの剛性いいですね！振動、強固対策、

Injector prolly failed that got hot seen it happen to focus STs. Basically went lean and detonated

About the Pistons Damage i think there was Knock knock knocking on hevens door xD Der Motor hat geklopft

Looks like piston melt:o does the injector was faulty?

die zylinder liegen ja wargerecht macht das was aus oder ist das egahl "wegen verschleiß"?

Огонь!!!!!!!!!!!!!!!!!!!!!!!!!!!1

What makes an “ej257 stroker” different from the stock ej257 in my 2019 sti? Thank you anyone who knows please tell me the difference I want to learn

Stroker than wore it down?

Ran out of oil. Simply a lack of service or a complete oil pump failure. Over heated due to coolant anomaly. In both cases heat was the factor where the piston over heated expanded beyond speck tolerance for the bore?

Due to over heat piston sinck and got hit with liner ....heat damage

I wanna drive :) what’s the bore size?

Ich bin davon überzeugt das man seine Kfz-Mechaniker Ausbildung um 50% reduzieren kann wenn man bei SUBi lernen könnte.

Ringland failure?

Lack of oil and heat?

Ring land failure?

Драсте на какой локтит завинчиваш шпильки в блок?

Overheat because lack of lubrication?

On that piston, it looks it got lean, heated up, butted the rings, and blow torched from too much oxygen. On that EJ25 stroker, the sleeves are probably too short at the bottom as well. At bdc, too much of the skirt probably comes out of the bottom of the sleeve, then, as you said, the rod angle is fairly extreme, so the piston gets "forced" & rocks as it goes back up the cylinder. There's not enough sleeve to support the skirt at the bottom. When you see a piston come out of a stroked engine, w/wear marks on the skirt like that, 99% of the time, the piston is hanging to far out of the bottom of sleeve.

Broken piston ring?

The top ring is bent downward toward the crank. It could be a dropped valve, but I actually think, judging from the score marks on the piston sleeves, that the engine ran very very hot -- likely head gasket failure, lost oil pressure -- causing the score marks on the skirts and heated the combustion chamber even more, and finally, part of the spark plug broke off/melted and caused mechanical damage.

Master boxer head

7:15 huge knock happened i guess?

We probably already each have a couple busted ej pistons. Guess what I've got in my pocket and I'll send you two

LOL. Raising hell out in the parking lot... :)

Valve failure?

Ich vermute mal die zündkerze hatte einen falschen wärmewert und es kam zu Glühzündungen.

Ring gap failure got hot expanded pinched the innr bore and broke! Happens if you donttear apart your motor and oversize the gap when running meth injection or NOS!