HE WAS NOT A COMMON MECHANIC, IT WAS ANOTHER LEVEL. GREAT TECHNICAL SKILLS.

the knowledge this man possesses is insane, he could design for any company it looks like.

Outstanding!! Many blessings to you and your family from Perryville Kentucky USA

Hi Le Dan, I love your work because you appreciate your build. Pls make a video like this but with ELECTRIC STARTER to make it more interesting

The engine sounds awesome when stationary. When riding it sounded a bit rough. Maybe the carburettors need tuning.

You sir a A very Talented, Young Machinist, You Should Be very Proud, Of the Things ,I have seen you Build Another Great Build.

I bet Le Dan really loves his work. My Dad would have loved a video like this.

How nice is it without music and especially what a wonderful job this man does 👏

Three ways to fix that running issue - use four carbs or use the two to feed one cylinder from each bank. That will avoid having one on compression stroke at the same time as one on exhaust stroke through the same carb. Thats why the more load/rpm you give it the worse it gets. You could change the firing order to both on one bank going off at the same time but that will double the torque loading on the crank and gearbox. You're so close - just a couple of minor mods and it will go like a champ. Top work already though.

I love these "tear-down-and rebuild films". And these guys working here sure know what they are doing.

exciting to see the engine finally mounted and hear the sound of the V4 engine. Excellent execution of your project build . As always, looking forward to the next project. Love it.

This guy surely can build any type of engine.

Я снимаю шляпу, это высший пилотаж!!! Все на глаз без чертежей!!!! 👏 👏 👏

The only project video which amazes and enthralls with the precise workmanship of very high calibre is only found on this channel. I normally skip all videos but this guy is just extremely talented ...ingenious engineering feats are part of his projects and that too from scrap. Lot of love and respect.

i cant say anything that people haven't already said about how good you are. I hope you start building your own motorcycle brand one day. You deserve it!

Your mechanical/machining engineering skills are admirable. Wish I could do this!

As always, your craftmanship never fail to amaze me Le Dan, amazing work as always

What a pleasure to see a true master at work. Astonishing.

You make something that is extremely complicated look so easy. Awesome work mate.

Absolutely stunning craftsmanship of this nature is not just art but potentially lead to bigger things. Love the V4.

every video you make just takes my breath away, you are a mechanical genius

Your engineering skills are truly amazing for someone so young, an absolute joy to watch, the sound of that V4 on startup is beautiful, so crisp and all before any adjustments, reminds me of what you hear in a MotoGP garage, well done lad, Instant subscribe, 👏👏

Fantastic sound. Another great build, well done LeDan

Khủng thật sự. Khối lượng coing việc khổng lồ , quá trời công sức bỏ ra. Thợ tiện cứng nghề lại am hiểu động cơ , hàn đẹp luôn. Chắc VN chỉ có 1 mình bạn xuất sắc như vậy.

I can't even get around to changing the points in my 74 cb360. My hats are off to you my friend. You are amazing.

It seems more complicated than build a motor from zero! I can not believe it works!!! It's incomprehensibly mesmerizing!

One of your greatest Jobs. Well done. And the sound of your Le Dan V4 is fantastic.

Watching you machine down and put the engine together proves one thing your a very skilled engineer. Top drawer results. Amazing to watch. Great bike. Thanks for the video. ❤.loved seeing you measuring components and double checking by eye ...and just using your eye because you could see what you where after..Amazing.

This is the work of a mechanical genius! Their skills always impress me! Respect!

Seriously insanely nice to see it come together as it did

No expensive parts just pure talent.

You have a lot of talent mate, so keep on building projects like this & it's good to hear the ambient noises instead of crappy music 👍👍👍👍👍👍👍

Thats some mad scientist stuff lol. One thing ive learned over my 60 years is never underestimate what a bored man with a bunch of skills can build in his home workshop. Outstanding job mate. Insane, but outstanding.👏👏

Amazing work! It's one thing to say "what if" but totally another to bring it to fruition, very nicely done.

You Sir, need an R&D job in a high flying blue chip company! What you've been achieving with these motors is pretty cool, but not hugely difficult. What's amazing is, you've achieved all these builds with the low precision tools you have around you. Imagine what you could achieve with a pro tool room! The mind boggles!

You used a hacksaw, Allan Millyard would be proud. Great work Le Dan that thing is a beast.

Sehr beeindruckend. Ich verneige mich vor diesem Könner und hoffe, bald weitere Projekte dieser Art zu sehen!

V 4 engines is perfect for motorcycles, narrow and take little space + sounds amazing and feels great to drive :)

Fantastic skills with some serious calculations.Very impressive outcome. Awesome.🫡💖

I am truly impressed with the quality of this work. By the inventiveness, and the simple means implemented to accomplish such a big modification. We should even talk about creation, so everything is changed. I just have some concerns about reliability. I tell myself that the cooling may be a little insufficient, or that some original elements may be a little weak to receive the efforts of four cylinders instead of just one. But maybe you have found solutions to avoid certain problems. It's hard to estimate based on the video when you don't know these famous engines as well as you do. Congratulations and good luck with your projects.

Sorprendente tu capacidad creativa para lograr tu objetivo ..eres muy ingenioso te felicito ..quedó espectacular y el sonido del motor ...sensacional ..saludo afectuoso desde argentina 💪💪

Dude, that sounds fantastic. can't wait to see how it runs.

WOW!watching you doing the engine caught my eye pop out !and came to the pipes converting let me felt stunted ! You one hell of greatest motor engine modifier I ever came across! Immediately I want to be fan !

Молодец парнишка, из мусора собрать мотор, да ещё переделать на четыре цилиндра это просто гениально. Спасибо за интересное видео.

Your welding skills have gotten much, much better. Especially when you consider how dirty that aluminium must be. Great job!!!

You my friend are a genus.....AMAZING V-4 = Power 💥....Thanks so very much....State side Shoe🇺🇸

Wow , brilliant work !

Поглядел я на это, позавидовал ! 50 лет назад я такого не видывал!

Bạn đúng là thiên tài, tới đây không biết bạn đã có dự án nào khủng khiếp hơn chưa Rất ngưỡng mộ về việc bạn làm

EXCELLENT......MERKEL WOULD BE PROUD OF YOU.

Can you imagine some engineer from Honda watching this? He does all this work from a modest shop...no CNC..computer CAD...outstanding work!! Keep it up!!

You have the talent to design and build your own motorcycles. Great work.

Que trabalho espetacular. Saudações do Brasil 👍

Estos weyes ya son otro nivel, saben optimizar al máximo y utilizar sus recursos, una joya!!!

Holy Grap, he´s a Genius...

<a href="#" class="seekto" data-time="1602">26:42</a>Now with this V4 engine, the motorcycle became muscular and imposing, it was really beautiful. Congratulations Le Dan, another project completed.

the missing direction is extraordinary greetings from ★Indonesia★ 🇮🇩

Awesome!!! 🎉 I was skeptical, when I saw the welds I thought “this guy has to be a machine”, and indeed you are my brother

Wow. Very impressive. Sounds awesome, like a smaller drag car engine.

I offer in constructive ideas, meant in a good ideas way.. ..the rear cylinders might need some baffle guiding plates to force air to stay around the rear cooling fins at speed, so there's time for the reduced rear banks airflow to absorb the heat, (like how was used on aircraft radial engine's cylinders), ..also maybe easier to do, slightly bigger main jets - to help with cooling, ..or/and perhaps an additional oil squirting jets into the crankcase (just below the piston barrel mouths) from another bike, to squirt some oil upwards onto/towards the undersides of the piston near TDC. Best of Luck Le Dan !!

O som do motor ficou Show!!! Parabéns! 😉👍🏆🏅💚💛🇧🇷

amazing. dude is too advanced. god bless him

That, my friend, is some serious skill. Loved every minute of this video.

Any person with this level of skill in a manual shop should be building prototypes for aerospace or major industry. If your one and only passion is a motorcycle, large motorcycle manufacturers will be recruiting you to help make their concepts come to life. It is the skilled operator of a manual shop that makes the first prototype and possibly many improvements. After that proof of concept is completed and perfected, the CNC machine will reproduce parts by the thousands or millions. Sir, my utmost respect to you for this great project.

Simplesmente PERFEITO!!! O som desse motor ficou lindo!!!

Absolutely incredible

the fact that you've made this with 125cc honda engine makes it more incredible

Acho que sou o único Brasileiro, Que admira esse Peste 👏🏻👏🏻 Se garante demais, mestre dos magos 💪🏼

I'd love to see a conversion of a head from 2 to 4 valves

this guy's projects r insane, companies have to hire him as an engineer

Your design and metal work are fantastic!

This is a masterpiece 🔥🙏🏻

astonishing work, your skills are developing even further... Have you considered building a small water dynamometer or doing any performance measurement? Would be very interesting to me, the risk for damage to these machines is my only concern. Your motors are my favorite type of art, thank you!

You absolutely amaze me, your knowledge and execution is simply unparalleled. My hats off to you sir I totally enjoyed your video.

BrOOmmMM VrOOOmmm great engine sound. I am speechless after to watch your job and what you did. Nice job man.

Words fail me in expressing how amazed I am at your skills. There's a Moto GP team out that that should hire you! And the engine sounds amazing as well.

Great work. If you haven't already done so I'd highly recommend looking up Allan Millyard. He is an absolute genius and has engineered a number of custom motorcycles with various different engines, often built from two engines he has spliced together. One of them was a Kawasaki V12!

Damn Bro😂 nice job man👏

You are the master of many trades. Respect!

Seus projetos são incríveis 🇧🇷

Really enjoy watching your builds. Very well done!! One question though.... Given the loose tolerances, how reliable are these engines, and how long do they last work regular use? Thanks

That’s crazy, I can’t even fathom the amount of planing which went into this project

I wish I had your knowledge to be able to build motors like that You are one awesome Person

Que projeto incrível 🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷

Que trabalho espetacular. Saudações do Brasil . Simplesmente PERFEITO!!! O som desse motor ficou lindo!!!.

This is the real spirit of biking. Great machining. I'm sure it will run like clockwork shortly. sounds like the carbs are fighting pressure a bit.

A V4 Cub engine is so cool. Ed March would be pleased to ride this around the world.

Insane skills! If you could make a V4 out of the popular but inexpensive kawasaki 650 parallel twin with fuel injection, that would be awesome!

simplemente asombroso! suena como honda vfr! saludos desde argentina!!

I like your video, i love your job, awesome design, powerful, very nice result. Congratulations!! You are the best.

You, sir, did some serious art there. BUT PLEASE remember to ALWAYS wear your safety flip flops in the workshop!

So good

Nếu tôi là các hãng lớn, tôi sẽ mời anh ấy đến để làm những việc lớn lao hơn nữa. Anh rất tài giỏi chúc anh có những sáng tạo hay hơn nữa. 🎉❤

Amazing engineering. Great bike. New set of tyres and on the road to adventure.

Incredible! This guy deserves some sort of an award…

Mi mayor admiración para usted y su trabajo, lo que hace es más que arte. Saludos desde Colombia.

Absolutely incredible fabrication and machining! My first concern was oiling pressure? Durability of transmission and clutch?

Amazing job. I would love to have all the tools that you have and of course the skills to correct use. Fantastic.

Great work on this and all your projects! Great skills you have! Cheers!😀👍🛠️🔧

Very cool Le Dan 😎 engine sounds great but fueling seems to be wrong. It will be better when that is fixed 🙂