HYDRAULIC PRESS AGAINST BMW CONNECTING RODS

Using a hydraulic press, we will test the engine connecting rods of a new and old BMW for rupture

[@MattC-eo6ep]

I'm not an engineer, but it seems that these connecting rods were designed to resist compression end to end, rather than being pulled apart. The failure points (top ring, cap bolts) would not be so stressed in a compression test. Still an interesting video. Love the channel!

[@Fincher123]

Yeah i saw bend rods because of long term use and to much power. But not because of a pull =/ Its not existent in a Piston Engine. I hope he can redo this one.

[@gvertm3158]

@@Fincher123The piston stops and starts one hundred times per second at 6,000 rpm. In the third stroke, during the intake, a tensile force acts because the crankshaft pulls on it.

[@austineeze5491]

Good thing you said "I'm not an engineer"

[@Fincher123]

@@gvertm3158 oh yeah thats right. Sorry i pull back =)

[@mopar2ya165]

Most rods fail from being pulled apart. The piston being accelerated up the the crank pulling in down tears rods/rod bolts apart

[@MassimoTava]

No VPN, no mobile games ad, no links, no talking, just straight to business!

[@johnmusonda445]

Every man's dream.... to watch a video of another man crushing stuff and the only thing better is the something just more accessible and less hussle😂

[@tomast9034]

there was a tv commercial something like dont f around call ......:D

[@lollipop84858]

How do YOU know??

[@JamesBondAstonMartin]

Rare thing nowdays

[@halloklouey6885]

I've got mobile games ad 😂

[@francoismorainville712]

The stress on a connecting rods is PUSHING from top to the bottom, this video is totaly useless. As said you stretch bolts, not connecting rods....

[@jime8532]

The largest stress on the rod is stopping the piston on its way up the exhaust stroke and starting the piston back down the intake stroke. If compression was the big issue, rod bolts/screws wouldn't be a big deal to worry about. Not saying compression from power stroke is nothing, but the exhaust crossover is the highest load on the rod. BTW, you can't stretch the bolts/screws without stretching the rod.

[@sathir-5990]

Pulling only stresses the bolts a lot. We expected to see compression & rods bending.

[@AntekWyrwidomb]

Yes but all of them are designed like evry bolt/nut connection is kind of fuse in mechanics. remember that. It is fuse before bigger, more expensive repair.

[@TyBydlakuTy]

Źle przeprowadzone badanie wytrzymałości. Korbowody obciążane są siłą ściskającą a nie rozciągającą i tak zostały zaprojektowane. Wynik tego bezsensownego rozciągania nie mówi nic

[@juanacero6908]

Soy CRISTIANO evangélico y deseche las religiones incluido los pentecostales : Sus iglesias están divididas en llamados lugar santo y lugar santísimo en sus templos hay 2 pulpitos, para ellos no se partió el velo en dos. Sus iglesias son paredes y no humanas (Templo Viviente de Dios). Piden diezmos, se creen levitas, entonces debería de haber dos tipos de sacerdocio levita en general que recibían el diezmo (Num. 8:24-26) y deberían de dar el diezmo del diezmo a los sumos sacerdotes (Num. 18:26) y los levitas sumo sacerdote descendiente de Aarón. El diezmo era para el huertano la viuda el desamparado para el extranjero (Deut. 14:22-29). Ya no hay diezmo, pero ellos piden a diaria, semanal mensual, los diezmos eran cada año y otro cada tres años todo eso pertenecía a la ley dada a los judíos. Ellos declaran con su boca entonces ya no necesitan a Cristo, si todo ellos en su error todo pueden con su boca entonces están endiosándose, tremenda mentira, Cristo nos enseñó que dijéramos: si Dios lo permite are el uno u otra cosa. Idolatran a Israel terrenal (anticristos), lo llaman el pueblo de Dios y a los que creen en CRISTO los llaman gentiles (apartado de Dios olvidados de Dios) la escritura dice quien rechaza a CRISTO está condenado (Juan 3:18) y el que acepta a CRISTO JESÚS ya es salvo para vida eterna. Entonces a quien le creo a CRISTO JESÚS o a religiosos mentirosos llamados pentecostales. El pueblo de Dios son los Cristianos que recibieron título de ser llamados hijos de Dios.. Desconocen que los verdaderos judíos son los remanentes hijos de Dios es decir los Cristianos del mundo, el pueblo de Dios, somos los Cristianos. Los mentirosos dicen que para los Cristianos no hay tribulación, no saben cómo vivieron los primeros Cristianos, en roma en Israel, perseguidos, asesinados, quemados, acontecimientos en el coliseo romano, el incendio de roma, persecuciones, por judíos claro ejemplo Saulo perseguidor autorizado por gobierno judíos, inquisición etc etc, y que según esos mentirosos ellos serán raptados en secreto sin que nadie lo sepa y para ellos no hay sufrimiento engañan diciendo son hijo de dios rico y anhelan riquezas y poder terrenal. Dios nada hace en secreto ni se esconde de nadie, todo lo hace avisando miles de años antes y a ojo de todos. Ellos no predican a CRISTO JESÚS, ellos predican a la mentira que no existe (jeova, yave , buda, ala etc.etc. etc) todo el que rechaza a CRISTO JESÚS entonces el tal es bestia (anticristo) Obligan vacunarse. Hablan lenguas que nadie les entiende. Por sus obras los conocerás dice nuestro señor Dios y salvador CRISTO JESÚS. Soy Cristiano hijo de CRISTO JESÚS mi Dios y salvador regresara pronto en las nubes del cielo y todo ojo lo verá ahí mandara recogernos a sus Ángeles con voz de trompeta nos reuniremos su iglesia (todos los Cristianos verdaderos del mundo) CRISTO es la cabeza de la iglesia, ahí las bodas del cordero. Antes de destruir esta tierra y este cielo reinará mil años este planeta, pero antes encarcela por mil años a satanás. Al falso profeta (religiones) y a la bestia (espíritus inmundos seguidores de satanás, google, Facebook, QR, chip, ciencia usada para el mal) serán lanzados al infierno vivos. Después de los mil años satanás es soltado de su prisión no se arrepiente y es lanzado al infierno la candela que no se apaga ni su gusano muere, desaparece este mundo y este cielo inmundo por causa del pecado, nada inmundo prevalece, ahora Dios todo lo hace nuevo, nuevo cielo y nueva tierra, Dios Reyna para siempre. ( 1 Juan 5:7 Porque tres son los que dan testimonio en el cielo: el Padre, el Verbo y el Espíritu Santo; y estos tres son uno.) Dios resumió toda la Biblia en dos mandamientos. El verdadero amor ( CRISTO JESÚS )

[@EnduroLRA]

@@AntekWyrwidomb but bolt/nut transfers negligible loads relative to the crankshaft itself

[@entangled31415]

Was expecting compression benchmark too

[@superbracey]

Genuinely one of the most tense videos I've ever watched.

[@fixferdig]

Ahh! You killed me🤣😂

[@Herefornow-571]

This is more of a bolt strength test than rod breakage.

[@allanwilson8161]

Spot on !

[@nikoszxr900]

That's right.. Exactly as you wrote it..

[@uwisho]

Bingo

[@THsu-fq1rn]

Two broke at the small loop, so not as you expected! Assumptions make an ass out of you

[@ciaopippociao]

I'm an engineer and I can sure tell you that this video is useless, these connecting rods were designed to compression, not to be pulled..

[@bitva_motorov]

absolutely agree, movie just for movie))

[@jime8532]

I'm also an engineer (mech), and the largest stress is stopping the piston on its way up the exhaust stroke and starting the piston back down the intake stroke. If compression was the big issue, rod bolts/screws wouldn't be a big deal to worry about.

[@firstielasty1162]

Wrong. Tension is generally the problem. I left a longer comment elsewhere.

[@kimcuyosflores]

I was wondering about the 1960's engineers achieving such incredible massive force💪 RESPECT😂

[@Hobby_trails_family]

It's steel that weighs twice as heavy as the others.

[@JamesMartland65]

It’s just wasted weight. The older designs were more conservative with their load factors and were much heavier as a result.

[@CrankPointZero]

just shows they went with "better to much material, than having an early failure" cuz they hadnt the right alloys, precise calculatings and numbers nor the know how and all back then, like they got today.

[@TheJoaveck]

​@@Hobby_trails_familyIt also lasts twice as long. That's why we get cheap crap nowadays so we buy a new car faster.

[@dark-flame-master]

The old steel ones, practically indestructible, weigh much more than the aluminum ones used in competition, or with alloy, which are the ones used today in consumer cars. The advantages of reducing weight in the connecting rod are less vibration and energy efficiency.

[@endlessrandomness1057]

For the most, you tested the rod bolts rather the rods themselves

[@larryward1082]

I agree I've been an engine mechanic building hard Rock engines 6 cylinders and V8 for about 55 years and definitely those rods could take a lot more being pushed down and pulled apart

[@rafalkrawczyk1426]

They wasn’t designed for pulling!

[@gvertm3158]

There is also tensile force in a four-stroke engine.

[@Samqdf]

Depending on the revs the engine is doing the tensile stresses of a rod can be significantly higher than the compressive forces. On a Diesel the compressive forces are definitely stronger under compression than under tension due to the low revs, high compression ratios and high reciprocating mass, while it's usually the opposite for most petrol engines.

[@tomast9034]

@@gvertm3158 not much. from slowing down the piston in tdc .... also the fresh mixture or the exhaust gases slow it down.

[@piccalillipit9211]

They absolutley ARE The rod is naturally MUCH stronger in compression - its the weakest in tension when its trying to throw the piston off the rod at the end of the exhaust / beginning intake stroke at maximum RPM. This is why the diesel rod is so badly - it never has to rev very high, yet it experiences a much higher compression ratio and combustion pressures than the petrol - this is why diesel engines are cast iron. Quote "The 5.2-liter V10 that debuted in the 2009 Audi R8 has the highest mean piston speed for any production car (26.9 m/s) " " high speed diesel ~14-17 m/s for automobile engines"

[@Samqdf]

@@tomast9034 I am not sure what you mean, do you mind explaining? I don't see how there are any gasses helping to offset the inertial force when the piston goes past TDC during the exhaust / intake stroke transition?

[@diegogutierrez6366]

Una lastima que no lo hagas a compresión, ya que es la fuerza que soporta en su uso

[@radekchodala6949]

anyway, newer engines, more and more relaxed engines 🤧, 😆😅 euro standard that destroys engines,,,,🤣

[@paulfox7401]

Ему бы тупо не хватило мощности пресса - сломать шатун на сжатие.

[@andreaferrari3243]

I really liked this video. The connecting rods are subjected to compressive stress (due to the pressure peak after combustion) but also to bending and tensile stress (due to the piston's inertia at top dead center between exhaust and intake strokes). Therefore, the video makes sense and shows the tensile failure of the connecting rod, so well done. However, it's important to note that the strongest connecting rod isn't necessarily the best one. A connecting rod must withstand the loads while being as light as possible, meaning using less material (less material translates to less resistance). Engineers therefore don't seek a very strong but heavy connecting rod, but rather one that is just strong enough and as light as possible

[@redread4414]

It’s not that this testing is useless, it’s that the cover pic is clickbait.

[@mototrials582]

Nearly useless.

[@rumpoh8039]

CON RODS ARE DESIGNED TO SURVIVE COMPRESSION,LOAD NOT TENSILE LOAD

[@Melkor54]

wrong

[@douglascooper1987]

Yes but Tensile Load is also applied.

[@johneddys2351]

What happens when a 2 pound piston traveling upward at 26.9 m/s makes a sudden stop at TDC and reverses direction? A massive tensile load.

[@RhinoMotorsAbj]

I d say both

[@attilapalko8773]

No no, the tensile force can be higher at high rev than the compression force!

[@Bosjak63]

Впервые вижу чтобы шатуны работали на растяжение 🤣🤣🤣

[@Expedient_Mensch]

The stretch in the rods is actually visible. It would have been good to have some sort of grid or lines in the background to show that better.

[@tomsimon104]

Moral of the story is, " Do not put your piston rods in a hydraulic press"!

[@robertmoore119]

Lol

[@AczeOne]

bicycle crank arms - Shimano, SRAM, Raceface Bike Stems - 31.8 and 35mm

[@alecjefferson6993]

Yes Conrods are made for compression. This test means NOTHING 🤬

[@xrockslee2502]

Calm down Partner

[@degeneralist3.088]

Yes, it does; high rpm sustainability

[@robertoarezzo4809]

Allora se vokete fare la prova per resisyenza alla forza angolare dei giri motore dovevate pesare le bielle indicare con che metallo fatte e comunque la prova vera sarebbe meglio in compressione

[@degeneralist3.088]

@@robertoarezzo4809 please in English?

[@AURORA-wx8hy]

But you still watching 😂

[@MesserschmidtBf]

Bei dem Auto von 1968 ist die Qualität des Materials eindeutig besser wie bei allen anderen Fahrzeugen!

[@jooch_exe]

No wonder the the old BMW motor was able to take 1400HP in F1.

[@Eduardo_Espinoza]

Completely forgot about any that!

[@piccalillipit9211]

those old BMW engines were astonishing

[@lifegoaltv3308]

Not the Rods!!!

[@TeemuNieminen-x1d]

Remember hv its not The real forse its nytons/rpm. and......

[@ДенисГераськов-п6д]

Это не от bmw, а от русского автомобиля moskwitch 412( там есть на нем цифры "412" на 0:57). Автору просто стыдно.

[@jonny_037]

This test makes no sense: connecting rods are not sized for traction but are designed for compression and buckling.

[@jime8532]

Traction?

[@scottysencounters]

The x-trail rod is so skinny!

[@fidelcatsro6948]

$$$$😂😂😂

[@gentle285]

It was not designed for high perfomance engines.

[@douglascooper1987]

Light piston and Excellent Balancing.👍

[@JamesMartland65]

Light engine designed for torque. Brilliantly to my eye.

[@martinXY]

@@gentle285 Well, it is a Nissan...

[@jevgeniardassov]

M3, M5, 850 were not a surprised, those are performance models with forged internals bit 1500 is a typical family sedan, was a complete surprise… 😮

[@ДенисГераськов-п6д]

Это не шатун БМВ. Это шатун от moskwitch 412.

[@MrMopar413]

Interesting that in most cases the bolts broke. There was one comment about the process of pulling apart but the comment was about compression on the rod. A connecting rod goes through multiple cycles of being under compression and lateral expansion and in between as it changes direction in a 4 cycle engine. Federal Mogul has graft charts showing the rotational stresses on their engine bearings . It’s quite amazing all the different stress put on rods , pistons, crankshafts during each degree on engine rotation. Sometimes I wonder how in the hell they actually stay together in the first place 🤔🤪😂👍

[@brunosilveiracintra]

This test is not valid. These parts, inside the engine, are just applied to traction during the air admission. The correct test would be the compression testing emulating when the expansion inside the cylinder happens.

[@Metal0rDie]

Lol. Nope..

[@arzvaelkerbourch380]

You forgot that an engine has 3 or more pistons traveling at opposite directions

[@556online]

I guess those old timers are right when they say “They don’t make’’em like they used to!”

[@kai-uweschwarz7008]

Schade das nicht die Gewichte der jeweiligen Pleuel angegeben wurden sind. Es geht ja bekannter Art und Weise um die Gewichtsoptimierung der beweglichen Komponenten. Desweiteren ist die Zusammensetzung des Werkstoffes ein Faktor. Ich sehe einen reinen (nicht sonderlich guten) Unterhaltungswert dieses Beitrages mit sehr eingeschränkten Erkenntnisgrad.

[@theeventhorizon-valebridge9512]

The piston rods were all fine and survived fully intact: it was the big end clamp bolts that all broke so really this test is completely inconclusive in virtually every regard!

[@Lawrence-uw6cs]

How so? There's one little end failure and rod bolts failing is a thing, especially on modified or higher rpm engines! Often a bearing failure is the cause or even a money shift! strong bolts save block's!

[@sshep7119]

This shows exaclt why the main thing is piston rods is a bolt upgrade. Even when you upgrade to aftermarket rods, the bolts in the main caps are critical. The rod is made to be placed under tremendous load during the power stroke, the bolts hoding the cap on the rod are loaded when the piston/rod assy hits the top of the stroke and there is a near immediate change in direction. The forces are gigantic on the bolts because the piston/rods assy has kinetic energy in one direction then it pulled in the opposite direction.

[@franciscolavado388]

0​@@Lawrence-uw6cs

[@Chef-James]

Did you actually watch the whole video?

[@balboa8694]

​@@Chef-Jamesseguramente no

[@dimitrisliakos5470]

The 67' 1500 engine used as was in f1 cars and produced well over 1000bhp with no problems...

[@megavolt6054]

Отличный тест!!! Многие пишутчто шатун расчитан справляться с жатием , но при этом забывают что шатуну нужно бороться или выдерживать силу которая действует на его растяжение. Сила эта возникает когда точка вмт достигнута, шатун должен остановить поршень который также двигался в сторону вмт. В точке вмт происходит моментальная остановка поршня который в этот момент имеет определенную массу- которая упрощенно складывается из веса- поршень, поршневой палец, кольца +направление и скорость его движения. Если еще проще то шатун в точке вмт моментально останавливает поршень который уже имеет огромную массу , ещё в этот момент остановки поршня, шатун уже начинает обратное ускоряемое движение относительно движения поршня что ещё больше действует на растяжение шатуна. Это в кратце)

[@efimkrivov]

Это называется импульс;))

[@megavolt6054]

@@efimkrivov Пусть сперва это переварят и осознают)) А так у них перелом мозга может случиться)))

[@paulfox7401]

Ну да, ну да. И сравни с силой, которая будет через мнгновение давить на поршень и пихать его в НМТ. Там разница как слон и моська. По этому, проверять надо на сжатие. Что и говорят зрители. А так он тупо проверяет болты на разрыв, а не шатун.

[@efimkrivov]

@@paulfox7401 а ты попробуй раскрутить предмет массой 400 г до таких оборотов и представь какая будет нагрузка на Отрыв.

[@ДенисГераськов-п6д]

@@megavolt6054 кстати ещё в видео шатун от 412ого москвича бмвшным обозвал)) В русской версии этого ролика всё правильно названо. Автор боится что удалят канал за упоминание чего то советского/русского что-ли?))

[@cbrrider3208]

Without the mixture being ignited, you have tensile forces and compressive forces in the same ratio. Tensile force at top dead center and compressive force at bottom dead center. When the mixture is ignited, the forces resulting from the speed alone are added to the compressive forces from the combustion of the mixture. So, logically, the compressive forces are always higher.

[@designine]

weight of each would be interesting to know (although bore/stroke length plays its role). The old BMW fourcylinders are famous for a reason..How about a Volvo red-block fourcylinder test?

[@wayando]

That Nissan Xtrail part went higher than I thought it would 😂😂😂

[@indotube8125]

Skinny but very strong too

[@fidelcatsro6948]

My cat says They dont makes cars as tough as they used to anymore!

[@Southghost5997]

Hydraulic Press ❌️ Hydraulic Pull ✅️

[@KogiSyl]

Rods resist compression very well, and they resist extension much worse. Both of the forces act on the rods and accordingly during engine work, the forces are strong during in compression and weaker for tension. Reality is that rod is designed in optimal way for both of directions and if the design was good (no exaggerated or inadequate strength in any direction) then usually has equal chance to fail in both of them.

[@GentlemanJack-o2g]

Connecting Rods are not designed for elongating, it's designed for compression.

[@andrezacarias]

In fact are designed for both.

[@SmkWaSaBi]

a serious test would be a twist test... to see the benefits of 60 years of engineering regarding the starting points of all true connecting rod failures: micro-cracks and material defects. Plus a balancing test related to the mass.

[@RobertoRibeiro1983]

For the people that thinks that the rods are designed to resist only to the compression phase, you are totally wrong, they also have to resist to the cross valve phase after exhaust when there's no compression, the piston pulls the rod upwards with it's inertia while the crankshaft pulls it down with it's cinetic power, this is the moment that they break at high rpm's also breaking the side of the engine block where the rod touches inside the cylinder. Obviously is not the same forces as this hydraulic machine puts on the rods, considering the engine from factory on normal conditions. It's just a simulation that can break the majority of the rods existent on the market. For instance, on the compression or combustion phases, the rods can bend in case of hydraulic lock on the piston, caused by water of the radiator that can mixture with the engine oil in case of head gasket failure and other reasons.

[@billbailey55]

I knew someone that used to drag race a VW Beetle years ago and he turned so many RPM the rods would stretch till the pistons hit the heads

[@RobertoRibeiro1983]

@@billbailey55 I guess it's dificult to this ocurring to the VW aircooled since it's an over squared engine, also the heads would overheat and crack in the high rpm's before any rods failure but it can happen to any engine, depends on many factors.

[@iancoachwerksllc]

Yep. The piston literally stops at dwell

[@iachulsi]

Were these parts new? If they were not new, did they all suffer the same wear and tear during use? Were they subjected to the same efforts? there are many questions. Placing them in a machine and applying forces proves absolutely nothing if they are not parts with equal use.

[@5ergi0]

Hello. Many thanks 4 the video

[@joseph317]

There is no doubt that the quality of metal in olden days is much better!

[@mariorigotti1499]

What is thist? A bolt strength test?

[@efgeebe]

Mostly your testing the tensile strength of the cap bolts.

[@LeonardoEngineering]

As anyone said, compression is the stress factor we are interested in. But there's more: any claim should be backed by a statistical analysis on multiple samples, as companies do in their production lines. Testing single samples doesn't take to any sound reasoning.

[@supercoolsuperchill1896]

Many screws broke. Furthermore, cars back then had more metal, still didn't last longer. Look at the performance today, a VW TDI makes 600,000 km, back then a Golf Diesel was finished with 150,000 max.

[@Triggernlfrl]

It stays consumer grade crap...

[@manriquerosales9364]

WOOOOUU EL BMW MAS VIEJITO DE 1950-1960 GANO WEYYYYYY INCREÍBLES MÁQUINAS LAS DE ANTES DE 1980

[@leonardocoin7745]

WTF 1968 bolt strong like ARP hahaah amazing , and rod well we dont have nothing to say its just 50x overkill for this engine hehehe. Great Video.

[@niwtonoliveira3863]

formato todos deveriam copiar, sem merchant e sem frescura. Parabéns!

[@ИгорьЗагрутдинов]

Не актуально на растягивание, металлу придают прочность больше либо на сжатие либо на растягивание

[@JamesMartland65]

There are some tensile loads that need to be accommodated in the design, as the piston is slowed down as it approaches TDC. One of the factors determining this load is RPM. There seems to be a correlation between peak RPM and bolt UTS (good design ?). I’d love to see fracture analysis after failure here. Why did the components fail at crack initiation? Materials or manufacturing processes? Thanks for your work, very interesting as always.

[@oufdii7559]

Le tableau récapitulatif est une très bonne idée. Merci❤

[@SadGfgv]

Old is gold

[@tblscene]

From an engineer. This test show's the a little bit the capability for high rpms where traction is a more common problem. But you must compare a special amount of traction in combination with the structural integrity. So no deformation. That's what the crankshaft and road is Killing. So the best testing value is nothing if you have lot's of deformation..

[@Lawrence-uw6cs]

As expected that diesel rod didn't do too well for stretch but the x trail did surprisingly well! Compression test next? Id bet on the 1500 or tdi rod not bending 1st!

[@fastinradfordable]

Tdi rods are not strong. Stock vehicles bend rods all the time.

[@Lawrence-uw6cs]

@fastinradfordable yeah but why? They don't just bend! it's usually because a head gasket failure that has caused a hydraulic lock!

[@Spider_frog]

По обложке предположение, что на сжатие будет эксперимент, а получается, что на растяжение! 😤😠😡

[@leonidnikolaev7186]

Зачем здесь нужна музыка. Для полного погружения залейте оригинальный звук.

[@AntekWyrwidomb]

Honestly, the xtrail really impressed me. Everyone knows BMW engines are tough. But this nissan rod looks pretty weak, but it does the job. Good job, man.

[@SecondShiftPleb]

I wonder if there's a benefit to having weaker bolts. Perhaps under unusual stress a weak bolt takes the deformation rather than the piston rod. So the bolts act as the sacrificial part. Cheaper to fix than replacing the rod. Idk, but in most machinery, if it's going to break, you'd prefer certain parts to break first rather than others.

[@paulowen-iy6vm]

Once the bolt goes the conrod is going to get jammed up somewhere and most proablly go through the side of the block. Replacing the con rod after that is the least of the owners worries

[@firstielasty1162]

If one bolt fails, the rod will not ever survive it. Other likely collateral damage often includes block, head, piston, crankshaft, and valves. It all has to survive, or it can all be "sacrificial parts".

[@MetaloMan007]

So impressive and interesting, thanks a million. However, what I noticed is that the rods fail mainly from bolt fracture. I am not sure but the tensile test seems to me that it is stressing the bolt/bolt heads.

[@raymondjoubert007]

Do a compressional strength test on the con-rods.

[@Steve1766]

they don't make them like they used to

[@Jamirio]

Retro cars were made to last long.

[@Steve1766]

@@Jamirio indeed because no Planned Obsolescence

[@Prablem6]

That's why BMWs are called Bavarian MOTOR WORKS.

[@dean8736]

Hasn't been Bavarian for years my man

[@heretinaitiheretinaiti1672]

Flipo, algunas han roto pero el tornillo. Buenos materiales en general

[@R2D2trashcan]

Tuners: "Quick order me up a BMW 1500 engine!"

[@highpointsights]

could we possibly see some of the (GM) sintered/powdered rods tested?? The smaller motors seem to have really spindly/wispy rods like the Nissan rods in this test!!

[@mikebadcossi2583]

Please show some other rods.... American V8 's, Italiens and others😂😂

[@rayrooney4656]

Backwards test. What is the point?

[@fidelcatsro6948]

My cat says Point--> They dont makes cars as tough as they used to anymore!

[@rodrigoros221]

La biela del 530 posiblemente tenía problemas desde antes, porque esa generación de motores era la mejor de todas!

[@어흥이이]

역시 훌륭한 건 다 지난 세기에 만들어진 것 같습니다

[@ridakoki7109]

🤨🤔 لدي سؤال ،، لماذا كل البراغي انكسرت في نفس الجهة اليسرى !؟ هل هناك خطأ في الإختبار ؟ ، يجب فهم هاذا اولا قبل ان نحكم على نتائج الشد

[@d.h.1113]

Je to sice urceno pro opacny zpusob pouziti, ale je zajimave videt kolik vydrzi.

[@tillansbach8708]

- I think, the 1968 BMW Engine runs modified in the "Formel 1" with nearly 1500 turbo hp....

[@tierra6391]

I am not an engineer, but this is impressive.

[@78a67h]

Further to the discussion on tensile vs compressive loads, bottom line is: they don't make them like they used to!

[@seanlibby139]

Yeah this is more of a pulling effect there is a pulling effect and a compression effect on a rod up and down movements on both ends exchange at times... it's push and pull method pretty much... so now the same exact rods should be tested Under Pressure now

[@chincemagnet]

Used to make forged connecting rods for GM, Dodge, Ford, Honda. We used to do crush and strength tests on them a few times daily. They would frequently fail, not by a lot, but they’d fall outside the minimum spec, they shipped them anyway. That’s pretty par for the course in the automotive industry

[@JamesMartland65]

Excess weight reduces power and increases fuel consumption, OR it induces unnecessary cost. Manufacturing processes are much more consistent these days (unless you’re just making down to the lowest cost). The only problem here would be if the test limit was set inappropriately low. Is that what you’re getting at?

[@MrMylesXD]

Heat application would really set this off

[@HxTurtle]

no wonder the rod won which came from an engine that helped Gerhard Berger achieve his first F1 race win in Mexico 1986 where it ran at about 1450 HP during qualifying trim (afterwards, it literally fell apart.)

[@ДенисГераськов-п6д]

Только автор канала обманул вас - это не шатун bmw. Это шатун от moskwitch 412(0:57 - видно цифры на шатуне "412...")))

[@firstielasty1162]

Dear god...the same comments as in the last rod pulling video. Even one from an engineer. I hope he designs new transformers toys, not engines. Connecting rods generally fail in tension, NOT compression- this test has some meaning. The acceleration at TDC between the exhaust and intake stroke is the rods greatest moment of stress. The compression and rapid pressure rise before TDC on the power stroke lessen the tension created by deceleration of the rod and piston, but at high rpm, tension can still exist. Bolts are a common failure point, and a part of the rod. Another popular option for connecting rod destruction is overheating, weakening, and welding to the rotating crank, which puts a cantilevered load on the rod, and breaks it that way. Lack of oil starts that exciting process. Either all the "compression" commenters are working on severely detonating engines, nitromethane burning engines, or, more likely, they don't work on anything. And imagine the combustion process as a violent explosion, rather than the desired forceful but gentle push.

[@mecanicul_8]

Frumos experiment 😊😊😊

[@GTFour]

Need to try this again using ARP fixings with the ones that only broke fixings

[@narayanasamy119]

Need push test 😂

[@Kinzione]

i mean if thats what they hold on to, to the sides they not used an designed to hold. Respect!

[@warunajya]

M5 rod broke your machine 💀

[@murk1352]

That bolt gave way on that third one.

[@topev7864]

That BMW M3 connecting rod fail long before the connecting rods end snap, it failed when crankshaft end went from a perfect circle to oval shape.😂

[@AlphatecEngineering]

yes, very cool indeed. thanks for the video

[@jamesgravel7755]

That was pretty cool. Should try a lateral force next time. See how strong they are pressing the I beam. That’s where I’ve seen alot of them fail. Right above the big end. And bolts breaking are the two most common failures I’ve seen.

[@illitero]

Press wasn't strong enough to compress con rods so they tested them in the weaker direction. I watched the whole thing but just kinda disappointed with what I was seeing :/ Ah well, maybe you salvaged enough rods to do a follow-up with a stronger press someday!

[@cesartavaresjanoario716]

Esse teste é para saber a resistência a dos parafusos de fixação do mancal da biela ? Pois a biela foi projetada para sofrer esforços de compreensão e não de tração.

[@dimik3855]

Yes, the bulk of the stress a connecting rod goes thru is in the compression cycle, but trying to pull them apart is easier and more visually intriguing. This was well done, and thanks for listing them at the end.

[@Reculse]

For everyone that says these are designed for compression.Think what happens to the piston at top dead center at 7000 RPM.....if you don't get it it's your fault.

[@whitemark84]

thanks for the video compression would of bean a cooler thing but in this case you went for the right choice of pulling apart

[@alexalexis8936]

would you also test the timing chain of different brands of cars

[@s7a921]

Who was waiting until it gets to 10k?

[@Strada098]

But..but...connecting rods are supposed to to withstand downward compression forces, not test the pulling strength of their end cap bolts. The strength of the bolts will only be tested if the engine already failed, and only determine what kind of hole is hammered in the engine crankcase.

[@GhostRiderGSXR1000K3]

M5 ROD is from E60 M5 V10 5.0 not from F90 M5 V8 4.4