Automobile și vehicule

Why Are Forged Pistons So Strong?

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Big thanks to JE Pistons for helping us out with this episode. Check them out at and subscribe at

Why does every get so jacked about forged parts? What's really going on when we look at the molecular level of different metals when they are being made, used and destroyed? Today on B2B, we're going to find out.

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Comentarii: 1 730 

  1. WM


    Acum 19 ore

    Sri Lanka 😂😂😂

  2. Lynn Grabill

    Lynn Grabill

    Acum o Zi


  3. Christoforos Paphitis

    Christoforos Paphitis

    Acum o Zi

    on it's side... because at it's normal position it wouldn't make a dent :P

  4. Obby_Torretto


    Acum o Zi


  5. Skyler Disbrow

    Skyler Disbrow

    Acum 2 Zile

    Super dope video, and while the piston crushing was cool as heck, I think it was a bit of an unfair comparison. One got crushed along the axis that the part was designed to endure the most force, and one (the stronger one too) was crushed along an axis that the piston isn't designed to endure force on. Again, super cool, but I totally wish he crushed them the same :(

  6. User- Sama

    User- Sama

    Acum 3 Zile

    'Piston designers can go Buck Wild' -2021 Jeremiah Burton

  7. User- Sama

    User- Sama

    Acum 3 Zile

    You could've made a jojo reference about the punches

  8. T Daniels

    T Daniels

    Acum 3 Zile

    [spits out oil] They did what in a cup?

  9. Airport Rampman

    Airport Rampman

    Acum 3 Zile

    very informative and entertaining at the same time..i love learning from you guys..mow powah baby

  10. metwono


    Acum 3 Zile

    You guys really stepped it up on this video. Nice job.

  11. Mrluvshack


    Acum 4 Zile

    well done taking a very complex subject and making it edutaining. Great work team!

  12. The Triper

    The Triper

    Acum 4 Zile

    This guy kinda looks like Keanu Reeves.

  13. Charles Matlock

    Charles Matlock

    Acum 5 Zile

    Good video, explains some stuff well. I am a metallurgical engineer so I really appreciate it when people bring my expertise into the mainstream. If you are really interested in learning more, definitely start looking into other explanations since these are super simplified.

  14. janith gunasena

    janith gunasena

    Acum 5 Zile

    What is that thing with sri lanka I am a sri lankan and i am curious to know

  15. Sunil Chandra

    Sunil Chandra

    Acum 5 Zile

    What does B2B mean?

  16. MrDoritos09


    Acum 5 Zile

    Well, well, well...if it isn’t old faithful ‘Grumpy aka Nolan’ @00:06:04 😂😂😂.

  17. Sam Aran

    Sam Aran

    Acum 6 Zile

    Does Donut use an ad agency or or have companies like Keeps dictate the content or do they have creative control? Because I think their ads are brilliant. I actually enjoy watching them unlike ROfilm ads that I mute until they're over (I'm looking at you, Google Fi!!!).

  18. Dave Robbins

    Dave Robbins

    Acum 6 Zile


  19. JSmooVE3990


    Acum 6 Zile

    Mr. Frizzle is my spirit animal.

  20. Done Whiskey

    Done Whiskey

    Acum 6 Zile

    Really? Shralanka? Third eye? Wow. Did you really just say that?

  21. George Armstrong

    George Armstrong

    Acum 6 Zile

    You were doing ok until 14:26, when you introduced us to Mr. Frizzle. You lost me at that point.

  22. tim king

    tim king

    Acum 6 Zile

    Why didn't you crush all three pistons? All three from the same angle would have been better!

  23. cbb8991


    Acum 6 Zile

    Took me back to my material science class... With the addition of Mr. Frizzle.

  24. Mark Melinski

    Mark Melinski

    Acum 7 Zile

    Your best video yet! Keep it up

  25. Mex Drago

    Mex Drago

    Acum 7 Zile

    Why do mustache make you much stronger than being non mustached? 🤔

  26. Brady Sully

    Brady Sully

    Acum 7 Zile

    “Doc has won a piston cup!”, “he did what in his cup?”

  27. Weston Anderson

    Weston Anderson

    Acum 7 Zile

    Ohhh magic school bus. I feel dumb

  28. AutoBez313


    Acum 7 Zile

    Could not click fast enough # 🚗 🚘

  29. Pablo Cendejas

    Pablo Cendejas

    Acum 7 Zile

    liking the 80's gay moustache

  30. ALniLaM


    Acum 8 Zile

    what are these sri lanka references on 3:10 , 10:00 ?

  31. André Gillesen

    André Gillesen

    Acum 8 Zile

    How hectic to watch this guy. How about you don't try to be so hilarious?

  32. aferna Codes

    aferna Codes

    Acum 8 Zile

    jerry I'm certain your spiritual guide is a country. thank you for mentioning the country though, its a hidden gem

  33. Gapplebee's


    Acum 8 Zile

    bro i just wanna know why they're stronger without all the lame jokes. add-ons, and taking 20 minutes to explain it.

  34. KoyotBravo


    Acum 8 Zile

    800PSI in cylinder on a combustion stroke? Nah man, more like 2000

  35. Chaos Attractor

    Chaos Attractor

    Acum 8 Zile

    I was always told if a forged piston ever fails, you have a better chance at not damaging your crankshaft because it doesn’t shatter like a cast piston does.

  36. atk kio

    atk kio

    Acum 8 Zile

    Lol a cinder block fence



    Acum 8 Zile

    Mr frizzle, fuck sake 😅

  38. MOPARman345 HEMI

    MOPARman345 HEMI

    Acum 8 Zile

    Forged is more consistent than cast; and the molecular bond is stronger. That's all.

  39. Exabyte


    Acum 8 Zile

    ı am a material engineering stundent and we just learned grains and their differences yesterday

  40. Daniel Velez

    Daniel Velez

    Acum 8 Zile


  41. rocketrockets


    Acum 9 Zile

    Applied Materials Class right here. Wish you guys published this back in 2015 lmao

  42. rip micro

    rip micro

    Acum 9 Zile

    Ahh the finnish hudraylic press channel

  43. mar


    Acum 9 Zile


  44. Ryan G

    Ryan G

    Acum 9 Zile

    The big reason cast parts make more power is because they are lighter. Until they break

  45. Stephan Buchin

    Stephan Buchin

    Acum 9 Zile

    So entertaining. You could have played in American Pie 😎

  46. Shane Bedard

    Shane Bedard

    Acum 9 Zile

    Mechanical engineer here, I love that Donut is taking concepts I had to learn in college and making it easy to digest. Materials Science is pretty dope, obviously. Keep it up dudes

  47. Ernie Mathews

    Ernie Mathews

    Acum 9 Zile

    A great, articulate explanation. I know more now about my high performance engine- and great editing, too.

  48. Colin Hare

    Colin Hare

    Acum 9 Zile

    When you watch jojo's bizarre adventure and 4:36 happens

  49. Matt Allen

    Matt Allen

    Acum 9 Zile

    Cans for fixing a quarter panel of the all new aluminum body F-150

  50. Ronald


    Acum 9 Zile

    You guys should keep a tally for every time Nolan is mentioned😂💀

  51. Jonathan Parag

    Jonathan Parag

    Acum 9 Zile

    You kids go too far with the comedy

  52. Gavin Lamp

    Gavin Lamp

    Acum 9 Zile

    I respect that donut provides education with relation to motorsport. But we all just listened to a chemistry class about atomic structure.

  53. Jeremy Cable

    Jeremy Cable

    Acum 10 Zile

    who let jeremiah wave around a wand??

  54. Steven Bennett

    Steven Bennett

    Acum 10 Zile

    The hair thing 😢😭😫😒😏😅🤣😂😂😂 you saved me and my sanity! PISTONS F YEA!

  55. Redmed427x


    Acum 10 Zile

    Mr Frizzle and I have literally the same cd binder including that Twista cd and mix tapes.m wtf

  56. trillrif axegrindor

    trillrif axegrindor

    Acum 10 Zile

    because they are forged..try some metallurgy. seems like youtube is a good portion of peoples brains these days,like google one seems to remember or know fuck all

  57. octane


    Acum 10 Zile

    eheh =D Sofia Vergara's voice: 5:56 Ay Señor Jemias!!!, what a sxy mustache papihh, ;3

  58. deeez00


    Acum 10 Zile

    And here we go!

  59. Aurelius 843

    Aurelius 843

    Acum 10 Zile

    Metal is so fucking... well... metal

  60. Sam Muniz

    Sam Muniz

    Acum 10 Zile

    Real ones remember the original thumbnail

  61. Reigner John

    Reigner John

    Acum 10 Zile

    Really informative mate, keep it goin

  62. Colby Larson

    Colby Larson

    Acum 10 Zile

    I hate that he didn’t crush the forged piston in the same orientation 😂 we didn’t get to compare numbers at all

  63. madog


    Acum 11 Zile

    Don’t forget to talk about the expansion. In the motor during the run cycles of the engine.

  64. Jonathan Sawyer

    Jonathan Sawyer

    Acum 11 Zile

    Jerehmia actin a lil sus

  65. Chrispewkreme


    Acum 11 Zile

    Why is Phil Swift so strong?

  66. Ryan Buck

    Ryan Buck

    Acum 11 Zile

    Biden supporters = cast. Trump supporters = forged

  67. Sheila Dawg

    Sheila Dawg

    Acum 11 Zile

    This could have been a good, informative 5 minute video. Instead, it's unwatchable. Too bad, great subject.

  68. Crypto Junky

    Crypto Junky

    Acum 11 Zile

    I think you’ve overtaken James for the funniest guy in Donut.

  69. 350rounds


    Acum 11 Zile

    Laughs in rotary

  70. I AM GROOT 7

    I AM GROOT 7

    Acum 11 Zile

    Listening to you guys reminds me of Bill Nye the science Guy back in my elementary days. Those days I was chasing Ashley and Sally around recess time.

  71. SinkingSail


    Acum 11 Zile

    God, he is so obnoxious I can't watch this.

  72. Mike-2363


    Acum 11 Zile

    Mr. Frizzle piston his teacher's coffee.

  73. Erik Truchinskas

    Erik Truchinskas

    Acum 11 Zile

    I like the mustache it says "im not allowed within 300 yards of a school or daycare"

  74. Méďa Béďa

    Méďa Béďa

    Acum 11 Zile

    Co ten člověk hulí?

  75. Aa Bb

    Aa Bb

    Acum 11 Zile

    so acording to the press test billets are 10x straonger than forged. ok check.

  76. Enthusiastic Zestful Villainy

    Enthusiastic Zestful Villainy

    Acum 11 Zile

    Yeah... material science!

  77. vidaoTime


    Acum 11 Zile

    some inaccuracies but still good

  78. Nigel Wolfe

    Nigel Wolfe

    Acum 11 Zile

    Funny how many people say "SiliCONE" when refering to "SiliCON" Obviously TOTALLY different materials! Similar to all the folks saying "dampening" (like for shocks) when actually referring to "DAMPING" again totally different words that make one sound uber ignorant when interchanged Check 7:37 where presenter suggests that manufacturers add SILICONE (natural rubber!?!?) to Pistons. to make them "stronger"...LOL.....I am thinking NOT....That is SILICON (O is NOT long as in SiliCONE)

  79. Nigel Wolfe

    Nigel Wolfe

    Acum 11 Zile

    Pet peeve....all the morons that spend a sh*t ton of money making SMALL engines make BIG horsepower.....and they dont even race or anything....just want to waste ALL their money on their VEHICLE because they have NO BRAIN....I mean OBVIOUSLY if you want a crap load of power just buy a vehicle that has it STOCK DUHHH! But noooo they have a little engine blueprinted with forged pistons and carillo rods etc etc etc turbo etc....just FLUSHING money down the sewer hole for NO GOOD REASON WHATSOEVER!

  80. CPanic


    Acum 11 Zile

    Silicon = sand. Silicone = fake boobs. I think you used the wrong one

  81. Nc Spurgin

    Nc Spurgin

    Acum 12 Zile

    Coming from a polymer/material scientist, this is a great simplified explanation, love it! Only thing I can knock it for is the use of "silicone" vs "silicon," two VERY different things.

    • Blast Furnace

      Blast Furnace

      Acum 6 Zile

      @Lucki Si is a metalloid, not a metal.

    • Lucki


      Acum 7 Zile

      bro the metal silicone sheriff

  82. El L Cooljay

    El L Cooljay

    Acum 12 Zile

    Melting cans to make a radiator.

  83. Andres Rodriguez

    Andres Rodriguez

    Acum 12 Zile

    My girl never kisses me on the lips, only on the head...

  84. Tim


    Acum 12 Zile

    I think these episodes are way over engineered for just being on ROfilm.

  85. Tom Bittikoffer

    Tom Bittikoffer

    Acum 12 Zile

    So who gets to sue Donut this week? Quick. Someone look up if Disney owns any magic school busses?

  86. Blazin Off-road

    Blazin Off-road

    Acum 12 Zile

    I was really excited about the clips from the press channel because I wanted to see a comparison of how the two crush and deform, but the segment was entirely pointless since he did them in 2 different positions. That was pretty disappointing. Otherwise tho awesome video.

  87. Hotdog


    Acum 12 Zile

    Hey guys, don’t cast over concrete, if you spill it can spall and fling hot metal at you, get a sand box or something.

    • Hotdog


      Acum 12 Zile

      For your health

  88. Jan Binnendijk

    Jan Binnendijk

    Acum 12 Zile

    nice video.. another benefit of forged pistons is that there is no cutting through the grains, all grains remain intact.. that is what makes them stronger, and that's also why tools like spanners and wrenches are made the same way. Material science is one of the hardest subjects in engineering studies, but one of the most fascinating.. i really liked it when i was still in school...

  89. Sean Price

    Sean Price

    Acum 12 Zile

    it's silicon, not silicone. were talking pistons here, not implants.

  90. rwill45


    Acum 12 Zile

    Dave is an emotionless 2d image of a bird and i can tell he's tired of Jeremiah's shit

  91. Yannick Byce Linn

    Yannick Byce Linn

    Acum 12 Zile


  92. yo_its_gingey


    Acum 12 Zile

    Notice how in b2b they get as sweaty as possible before recording to be more intense

  93. Umindu Jayabandu

    Umindu Jayabandu

    Acum 12 Zile

    ayo im from SHARLANKA

  94. ALFABETAS999


    Acum 12 Zile

    i liked how he open the can with the flip flop xD

  95. Mitchell Meyer

    Mitchell Meyer

    Acum 12 Zile

    You can tell Mr frizzle didn't actually shrink them because you can see the shop lights. Can't fool us donut

  96. Gaurav Malewar

    Gaurav Malewar

    Acum 12 Zile

    Dude, the editing skills are God level. What are you guys doing on YT! You guys deserve a show on Prime or Netflix.

  97. tanmay baroi

    tanmay baroi

    Acum 12 Zile

    4:28 POV You're a piston in an LS1

  98. SuessLabs


    Acum 12 Zile

    Mr. Frizzle HAHAHAH!!!! That was sick, hilarious, and informative (on many levels)

  99. Kev Bacon

    Kev Bacon

    Acum 12 Zile

    Isn't a cinder block fence a wall... Lol

  100. Ben Plummer

    Ben Plummer

    Acum 12 Zile

    Did I just do drugs?