Homemade JETSKI part 5 - Exhaust, Cooling system & testdrive

Part 5 of my jetski build, 3rd time she's been in the water, but the first time with its own engine! it was very complicated to work out a cooling system, with a watercooled exhaust, but it worked pretty good aside from some driveline problems, which were to be expected
Plans: homemade-madne...

[@homemade_madness]

Is the sound the best part?🤩🔥

[@corv.9706]

jawis😆

[@NealFosterHD]

It sounds awesome. Can't wait to see the finished product. I was thinking you should stick the headlights in anyway :)

[@jkingamy9737]

It is so good I could listen to that forever

[@JaviiBtk]

Bro please let us get the final video asap 👌👍

[@sport1349]

Ik vindt jou het beste deel in je Builds,ga zo door. maar neem op tijd je rustdagen. Dat is belangrijk.

[@flintlock_glockTJR]

Man I just wanna say thank you for sharing your builds with us. The amount of planning necessary to pull this off can't be put on film. The fact you don't have a million subs is criminal. 🤘

[@allanweseman5433]

I would dearly love to be your age again to have the strength to build things like this myself. I am a 76 year old former VW and Alfa Romeo mechanic who built an open frame dune buggy and 7' 10" hydroplane boat in my youth. I have four Honda motorcycles but I dreamt of putting a Yamaha V-Max engine in a jet ski and here YOU are with almost exactly what I was thinking. Here in Florida USA there are all kinds of jet skis available cheap with blown engines and the idea of transplanting a water-cooled motorcycle engine would be right up my alley. Congratulations on your build and your welding skills!

[@m3hsid10]

You are a very skilled and diligent fabricator! The amount of hours you spend to put a video like this together has to be immense. Love the project! Nice work!!!

[@حلويرضوان]

انك رائع انك مبدع هذا اقل شيء ممكن ان اقوله لك

[@dukie1616]

What an amazing build!👏 This dude is seriously talented.

[@bradleymcclintock7771]

You my friend are a very talented young man. Can't wait to see the finished product.

[@villyou4809]

Just ridiculous.Your play by play in regards to explaining the build is spot on man, you anticipated every possible question we might have had. Your quiet community is going to hate you.. Perfect.

[@jesseblanquel9233]

Wow...I am so proud of you. You are a good Engineer

[@Aleks123]

It sounds so AMAZING! The engine is perfect for that and the exhaust is awesome!

[@JuPac420]

Definitely my favorite build to follow, each episode is worth the wait, thank you for another amazing video, and great work!!

[@Dr.Reason]

Perfectly stated!

[@lehighluke]

Your builds...but especially this one...has inspired me to do a project of my own. Nothing like your projects...its a pavilion roof for my patio. Carpentry is my skill set. But it's an elaborate design...timber frame with heavy beams and lots of joinery. I swear it's because of watching you that I say "I can do this"...don't limit yourself. I get the timbers delivered this week. I am doing it all myself...I've even made a mobile crane for lifting heavy beams by myself. Thanks for the inspiration. Also...that engine sounds gnarly!

[@m0nk3yl0v3r]

Amazing the array of skill and knowledge you have to build this

[@ThantiK]

Insane that you only have 150k subs. This is exactly the kind of thing KZbin is for :)

[@TheCustomredneck]

Awesome job on the heat exchangers! I might copy that idea for my mini jet boat. Thanks for sharing!

[@lin1371]

Dude, finally waiting for you to update the video. A thank you from a Chinese guy.

[@yodasbff3395]

Your creativiy and workmanship are awesome. That exhaust system is really well done. 👍 Looking forward to more videos.

[@homemade_madness]

Thanks!💪🏻

[@Eggneck2]

Such a good engineer.. very proud of you my friend.

[@hairybustard4247]

I’m hoping to build my own jet boat in the coming months. I already have a vfr 750 engine and gearbox a boat is easy enough to pick up but I don’t have the skills or tools to fabricate the jet drive so I’m stuck with having to source a drive from a jet ski which could probably cost more than the boat I intend on buying. Thanks for your videos as they’ve answered questions I didn’t know existed. All food for thought.

[@1one3_Racing]

Awesome job! Nice of your sister to help out again!

[@homemade_madness]

Thanks! She’s my gf🙈😜

[@IoaneTebTokamarewe-um1et]

Built your jet ski have shown the skills and knowledge of a young talented professional engineer . Good luck my friend and eager to see more of your invented worth ideas

[@philippe-lebel]

It's just great. You clearly have a good feeling for making stuff.

[@underweis]

Klasse, wat een vakwerk! Gaaf om dit schitterende project zo via je video's te kunnen volgen.

[@medrifter7884]

Great job, awesome fabrication! I do have to say that if the jet drive was fully underwater I think you would have a HUGE increase in propulsion.

[@NealFosterHD]

I think when he's sitting on the back it'll be underwater

[@benpowitzky4820]

I wish you would have more videos but when you do they are awesome. You are a mad genius. Don't stop...

[@Thewatson77]

You really did a great job with the header manifold 👌🏼

[@adrianteodor7793]

You're amazing man, I can't wait to see it finished.

[@michielderuyter6011]

Had ik maar een klein beetje van jouw talent dan kon ik al heel veel maken. Echt knap werk!

[@rickvanderwolf4809]

Weer een fantastische video! Ga zo door! Zit al met smart te wachten op een nieuwe video! ; )

[@DktheWelder]

Wow you have been busy! That is a lot of work , the exhaust and cooling system is great cool sounding JetSki be strange changing through the gears

[@bahadrsengul99]

Perfect content. Modifying exhaust cooling system to double wall could be wise. Water may flow back into the engine when you deaccelerate too quickly.

[@babylon.634]

The truth is that the work is very hard, but it is very excellent and very good engineering creativity.⚓🥇

[@DSperformance96]

How this channel doesn't already have 10 million subs is beyond me. Very much a fucking amazing job!!!

[@funtyes1970]

this young man does great job but he need to do more then 1 video in a month

[@nickvandenberg509]

Respect. Heel leuk te kijken naar de skills die jij heb! Ben benieuwd als hij af is ga zo door

[@andersson.l.e]

Well done. Can't wait for the complete build.

[@wongsukri]

Many thanks to you 1st for your awesomeness idea & 2nd for your excellent idea on how you gonna make a cooler system for your engine....this already solve my problem on finding the best way to cooling my coolant's for my outboard engine...🌟🌟🌟🌟🌟👏👏👏....greeting from Sarawak, Borneo island....

[@Ghine91]

Man your skills in fabrication are really impressive! You manage enought to make everything you think work in metal-working, welding, wood-working and fabricating. Considering your young age is really impressive, my compliments! Iwish to leave you a suggestion anyway: to rise the belt shaft make new two plates made of a sigle piece each, if you want to add a piece like you did I suggest to weld it with a 7018 rod with a proper bevel because is much stronger than MAG welding, consider that are very stressed areas from the torque of the shaft.

[@chadcory]

I love your videos! I'm working on swapping a Yamaha r1 motor in my seadoo xp. And your work has gave me some ideas thanks. I like your heat exchanger and the water injected exhaust.

[@BEANIEMOTO]

Man you are so Talented you're an Absolute Genius you must be an Engineer ... INCREDIBLE!! 👍😎🤙 Beanie

[@MrRadar88]

Amazing build! You have such an imagination to even dream of such a complex project and then to have the skills and determination to achieve a dream. Looking forward to see the completed project and you enjoying it. Stay safe,

[@NovaScoria]

Great build so far, so much work, but it is paying off for you for sure.

[@tylerwatts1004]

Looking great, lots of power and should be fun! Point on the drive belt, set the tension correctly and the belt should never skip, so don't remove it and change yet. Belt will be quiet compared to other options. Maybe need a mechanical threaded adjuster to set and hold the tension properly.

[@sport1349]

Je build is geweldig, ik bewonder je elke keer meer en meer. Je verdiend sneller meer abonnees. Zou het niet helpen om de videos meer te verdelen zodat je elke Zondag een video hebt, dat bind je meer met je fans. Wat vind jij ervan Jornt.

[@homemade_madness]

Zou kunnen, maar wel veel meer werk🤔

[@sport1349]

@@homemade_madness Bedankt voor je reactie. Ik bedoelde,bv de werkzaamheden in een video niet in een keer af te spelen, maar bv in 3 keer en dan niet zo snel afspelen en dan wat langer rekken door langer iets uit te leggen e.d. dat is alleen wat meer werk met de video montage. Ik ben er van bewust dat je naast dat vele werk,ook de bestellingen van de materialen en enz enz hebt. Ik heb 30 jaren een bedrijfje gerund (engineering)en weet goed wat er zo op je af komt. Daarom heb ik zo enorm veel respect voor jou,,en hoop dat je er niet van onderdoor gaat. In een andere reactie heb ik het belangrijk gevonden dat je niet vergeet ook je rustdagen te nemen. Je moet je niet verplicht voelen om iedere 4 weken ,wat je nu doet, een video te plaatsen.Denk nog eens na wat ik hierboven bedoelde. Blijf het in alle rust deze buils maken, en zo ik zie met veel plezier. Dan kan je het volhouden.

[@scoc253]

that is a whole lot of engine for a small boat and 1 passenger. bet that should be a riot and fun to ride. awesome. keep it wild g! 💯🤙🏽👏🏽

[@erikhumble9797]

Heel erg gaaf ik ben heel benieuwd wat hij kan wanneer die klaar is je hebt het toch maar mooi voor elkaar gekregen home made waterscooter💪

[@dharmilv6625]

Amazing buddy! Can’t wait to see the full assembly

[@eggymcwolf1]

Awesome. Really enjoying this series

[@jonathanrubin3603]

Amazing . Keep up the good work . I hope to see the finished project .

[@Mirrorverse1949]

there is some serious talent here! I salute you

[@zachloewen708]

One idea for an improved drive system in replace of the belt would be a snowmobile chain-case, affordable and able to withstand a lot of power., plus if the chain were to break you wouldn’t have it potentially damage the hull.

[@benjaminpeck7070]

Thing is awesome I will be downloading the pans and building my own with a vtec 4 cyclender

[@WrenchAtHome]

Amazing build, gets better every video. Looking forward to the next episode, keep it up man!

[@daluidi5923]

The best Z generation I saw. Thanks man!

[@gerardotorres9963]

Oh my God absolutely awesome. You are amazing. Engineer man. Awesome video you are the greatest.

[@SpiderF27]

Woow, i'm exciting already. I like that sound!

[@marcelocheves]

Awesome man, for engine best performance use the same length on each exhaust pipes from engine to the big collect tube. Cheers, you are good on what you do. Sorry for my English.

[@XTJ7]

Awesome job, can't wait for the next part :) Sounds amazing!

[@dutchbiker7874]

Heel gaaf! Wat een hoop werk heb je in dit project zitten, maar het resultaat mag er nu al zijn!! Het uitlaatgeluid is prachtig🤩👍

[@pedrodurigan7486]

Really nice job man, keep on going. Looking forward to seeing the result.

[@wags9777]

I love that this jet ski has multiple gears. That will sound very unique will driving it.

[@mikewollmann]

dude.... you know ur crazy, right? what an amazing work! can't wait to see the next part X_X

[@AntonMakesStuff]

Very cool! Are you sure the belt is under proper tension? Under load the metal structure might deform and make the belt slack. I think that belt should handle that power under the right circumstances.

[@yodasbff3395]

Belt drives like that are used on experimental aircraft and they can handle a lot of power.

[@johnlottes7440]

Idler pulley would probably take care of the belt jumping. Great build.

[@ZwervenmetJuKi]

Top gedaan, vooral de uitlaat vind ik een meesterwerk👍😊

[@opposaf2894]

كم أنت رائع ومكافح أيها الشاب المجتهد الطموح واصل إن عملك رائع ،

[@andreluisnascimento2169]

Parabéns mano você e um gênio...quando vier ao Brasil traga essa máquina. André de itacuruça RJ BR

[@normanwray1341]

Pretty good idea it's interesting to me Pete it looks like you best them on land and water 💦 nice 👍😮😅😊

[@gysbertvanderwesthuizen8011]

Excellent work mate,I like the way you make progress on every episode. I will certainly be a lifelong subscriber:)

[@emanuel_erol_germann]

Hey Congrats & thanks for the tech. initiation, hope to see how you will solve the belt system problem ! Regards from 🇧🇷

[@jankanning]

Great project, i´ve seen all parts and it´s amazing what kind of skills you have. I think the result of all will make a lot of fun. Here in Germany / Bavaria i´m not allowed to drive something like this beast. Hope to see the next part soon

[@TheRandomManiacs]

Awesome! Cant wait for the next part! Maybe put the driveshaft directly on the jet?

[@waynegilchrist1596]

Great project thanks for sharing. Love the "sounds" of the engine thru your headers and exhaust system. Perhaps the belt needs to have more tension but I am sure from watching that you will fix that problem. My concern is that it seems that perhaps your boat is a little short and too small for the combined weight of the engine and yourself. She seems to sit a little too low in the water and she ploughs a bit. It does look like you almost hit "plane" but a little more rake in the hull would make it lift quicker. I have built a few boats back in the 60s and 70s so it's been a while and I am far from being a master boatwright. Keep your videos coming.

[@rollinrock6696]

Man, that things gonna fly!

[@bjcharles5147]

looking forward to your next video🙏🏾

[@sawer]

Dude this is so cool! Cant wait to see you reach your first million subs :)

[@Torch4ya]

Awesome build.

[@PRINCEVINCE1983]

Hi was thinking and wondering how hard it would be to pull this off. I stumbled across your video. Well congrats on an epic build and an epic video really well done. Nice to see an in depth build video. your hard work has payed off what an inspiration 🙌

[@Frederikfradk]

Like so many others I really enjoyed seeing your build. When will you be ready with part 6? No stress 😉

[@clintonbeasy6609]

Awesome carnt wait till its finished mate

[@mikerammelt2420]

Cool man. Your one talented guy.

[@mxrider2strokebraaap54]

Crazy machine🤪 amazing video as always!😁

[@DrDeepstack]

I was about to type a comment that you should definitely test that heat exchanger for internal leaks, but then you did, lol great work, very entertaining to watch

[@RoboCNCnl]

Geweldig, helemaal gek :)

[@creedsixteen891]

Very cool. Keep up the great work

[@ironbrats]

Awesome..waiting for part 6 🤣🤣🤣

[@ABCustoms]

Mooi werk man! Lekker kunnen oefenen met je tig machine👌🏻 Die snaar was ik al bang voor, kan altijd nog met de originele ketting. Zijn online veel industriële tandwielen in die maten te vinden. Maakt wel wat meer geluid, maar zal prima werken. Ben benieuwd naar de volgende video!

[@kene6838]

Looking good, use bigger sprockets for more contact area but I think a belt is short lived.

[@homemade_madness]

Will do, i guess we’ll see how long it lasts

[@Moefongoe]

Very cool, just saw someone make it in pla seeing it now in metal gives me better options

[@lennym1636]

That is going to be sick, (in a good way) love it...

[@waynegilchrist1596]

Beautiful watercraft you have made and quite an accomplishment. However, watching your video I'm seeing your boat is seaworthy but it doesn't appear to come to "plane" but seems to plough thru the water, of course I may have missed the segment where it did pkane. You have plenty power and it looks stable in the water so your hull isn't raked properly or a combination of things like the ratio of hull surface to weight or possibly too narrow. If you solve that you will increase it's speed and fuel economy as well. Not being a critic, you did great but hopefully helpful so you can enjoy your full potential 👍!

[@leonardoaraujo7179]

Great, project. You suppose install one FT-400 Fueltech UMC to control your eletronic ignition and injection, plus you'll have one deash bord display.

[@pimvanmunster5606]

Tip voor RVS lassen. Je hebt eigenlijk te warm gelast, hierdoor krijg je een 'verbrande' las die als grijzig uitslaat. Schroef je amperage omlaap, gebruik voldoende argon en maak je werkstuk schoon. Je zult zien dat het dan veel beter gaat.

[@tomdejonge]

Heel vet project en bizar wat je kan maken

[@AJYZF1R2010]

This is so sick I love it

[@xyic0re714]

Awesome! only problem I see is water getting in the engine oil through the exhaust. There is a small amount of time on every stroke where this will happen.

[@BinneReitsma]

Machtich, wat bisto in einbaas kwa knutseljen mei in fleks en in dekûpearsage 😅 doch it dy fuort net nei! Moai sa troch gean, no al ien fan myn favorite kanalen.

[@alvaro_builds]

This thing is a masterpiece 😍

[@homemade_madness]

🙏🏻👊🏻👊🏻

[@imamalie7657]

Mengikiti dari part 1 sampai selesai.keren bro salam dari 🇮🇩

[@SGTMARSHALL1]

Well done ✅ 👍 was concerned your jet drive prop might be the opposite hand to the engine rotation but you obviously know what you are doing, you could upgrade your belt with a timing chain and elliptical cog to improve acceleration and reduce labour on the engine

[@mhector89]

Good job 👍You should put a small turbo kit ...👍

[@posborn321]

Absolutely amazing and so interesting I dream to have a garage tools and skills to do such build. You inspire me to work hard in my young years with my girlfriend to have a lifestyle to support such projects. Question, why do you need to cool the exhaust when superbikes don't ever need to? Also, I wonder if it will sound quiet and a lot better if you put a cheap motorcycle end can/muffler on the end of the exhaust to soften the noise. So it's not obnoxiously loud. Furthermore, I can't wait to see the next video with the beefier drivetrain, I'd love to see how fast it goes in 6th gear 😁 good luck with the tuning of the carbs