Building the Worlds Smallest 100HP Jet Boat!

[@GrindHardPlumbingCo]

Thanks again to Ariat for sponsoring this video! Save 10% off your first order - bit.ly/3DcyC9D Our Ariat Favorites - bit.ly/3bQ2D2M . This build is going to be wild! What do you guys think?

[@davidjessee7701]

The thing that changes the direction is called a jetavator

[@josephnachreiner5233]

Put a winch on it please

[@rsharney1111]

Hey dude, I have a tl1000 motor+ ecu + harness and a Kawasaki jetski 550 2stroke + harness sitting around my shop. We do led lighting not motorcycle stuff so if you want it let me know. I'm sure God wants to bless me, but I have to let go of old stuff to get new stuff.

[@rsharney1111]

We also have a ton of 1/8" acrylic scraps if you need windows.

[@josephmills7186]

where is the triumph?

[@ethanwhite1974]

You guys are seriously in my top 3 favorite youtube channels list. The creativity and awesomeness is unreal. Keep up the awesome work. Cant wait for the new shop

[@GrindHardPlumbingCo]

Thanks man!! We appreciate that!

[@dwdeezul]

lowkey my favorite

[@nathanyamaha465]

What are your other 2 favs?

[@ethanwhite1974]

@@nathanyamaha465 whistlindiesel and cleetus mcfarland!

[@Starrkespada1]

@@ethanwhite1974 LFG for the Florida giraffe lmao he’s local to me 🤙🏽

[@ridethroughlifertl]

I'm honestly really looking forward to the firetruck. That thing will be such a beast. I'd guess it'll be easier to accomplish when the new shop is built.

[@GrindHardPlumbingCo]

Oh yeah! We are looking forward to working on that again now they the weather is getting better!

[@jonlake4754]

@@-G-a-b-r-i-e-l your brain doesn't work very well 🤣

[@ChanceBeard]

Oh hell yeah GrindHard. Been watching y'all for years now. Modern diesel power plant in ye ole' Firetrarch? That can always come later. Keep making ordinary lives extraordinary via extension. Your content slaps.

[@ridethroughlifertl]

@@ChanceBeard I was thinking that too. Anything they got would be better than the gas one that's in it. Way more power.

[@Grrreatbritan]

Fire truck smire truck bruh check this boat way better but yeah yeeee

[@garrettstevens2232]

Lots of potential crossovers here. I'd love to see you work with Jet Ski Brothers and their V8 Jet Ski. Also, Cleetus McFarland has done a lot with mini jet boats and I believe he even has the same 6' hull waiting to be finished. Granted Florida is a heck of a haul, but he has been talking about an Alaska trip.

[@nickbaddorf2673]

Aw yeh jetski brothers co-lab would be sweet!

[@mmartian1969]

Yup, I remember when Cleetus got that hill when they shipped Kyle’s down there. I haven’t seen anything more about the Cleetus baby boat.

[@fullloadofcummins]

I'm pretty sure this is cleetus old hual

[@garrettstevens2232]

@@fullloadofcummins I don't think it is. GHPC had theirs a year ago, according to this video. Also the hull was labeled for them. Last I saw Cleetus bought a seadoo spark for the drivetrain and the hull was down at JL performance. I think it's the same model, but not the exact same one.

[@AsjerRA]

Boosted Boys K20 jetboat 👌🏻

[@bradbowers]

hey! just some pointers right off the rip, the kawi 750 is a great motor to choose because there is a lot of internet info on both the small pin and large pin versions, just convert over to premix and discard the pump and oil system, one little plate and your converted (they are reliable if maintained but no one does lol ) your carburetors are tuned to the restriction of the spark arrestor (vacuum carbs) (restriction=vacuum= tuning) so if you get rid of it for some china cones or something, then your "pop off" on the carbs will need to be lowered! always buy mukuni brand carb rebuilds... do not skimp on china kits... you will always regret it! also the exhaust is tuned based on where the water enters and exits, i suggest not monkeying or changing it up to much. there is usually one exhaust mod you can do to gain some free hp. Hope this helps!

[@on_another_level5661]

Great info. Marine engines (especially 2 strokes) are a different beast.

[@jasoncrawford6257]

well i hope they will be doing some mods, because that is not a 100hp engine stock

[@bradbowers]

@@jasoncrawford6257 very true!

[@camerontrail7281]

@@jasoncrawford6257 yea like maybe 30 at best 😂

[@catfisher420]

Amazing engine!

[@mattycakes7954]

You guys are living my dream. Thank you for being so awesome with your amazing builds. If you guys are ever in Florida, specifically the Tampa area, I'd love to meet you all and say what's up.

[@GrindHardPlumbingCo]

Thanks man!! We appreciate that! Will let you know if we’re ever down that way!

[@TrevorDennis100]

You guys are 100% the real deal. It makes me smile just watching the enthusiasm you have, and no one could question your commitment when it comes time to send the finished projects - and a lot of the time, sending the _unfinished_ projects. Keep on doing what you are doing lads. If other people feel as happy as I do when watching your channel, then you should know you are doing something to be proud of, AND having heaps of fun while doing so.

[@amicone78]

hi guys I've been following you for a few years maybe since you started making cars with motorcycle engines and I like what you Keep it up ok thanks a lot and a hug from Italy 🇮🇹🙋🇺🇲

[@the_keeponbuilding]

Cleetus did this lioe 4 times now. Coolest part of ghp is how you make it all yourself. And how origenal everything is. Dont lose that. Keep building it yourself

[@N1RKW]

I am looking forward to absolutely every project you guys are working on! That little jet boat is going to be an absolute blast to ride! Love the idea for the mini-trailer for the mini-boat. Just an idea from a guy who really has no clue: Have you thought about locating the engine in the front of the boat and running the shaft back to the impeller as a way to improve center of gravity and maybe rider comfort? (doesn't everyone love having a spinning drive shaft next to their sensitive bits? 😁)

[@joaovilafranca4523]

thats a good point

[@Louis_m9]

The reason every single jetboat has the motor at the back is because the more weight at the rear the better. because then the intake is easier to keep in the water which = less cavitation like having more traction on the water. i wont thint the weight balence will be that bad once you include the driver weight as a rearward bias is preferred

[@Louis_m9]

just read up on it actually, and a possible issue of too much rear weight bias is porposing. which is when while the boat is on a plane the front of the boat bounces up and down. this can be fixed by adding weight to the front, having fixed trim plates at the rear of the hull, or having adjustable nozzle trim

[@N1RKW]

@@Louis_m9 - It's a lot easier to adjust the seat forward and back to adjust for porpoising than it would be to move the engine. My thinking is that the engine, being a small 2-stroke, is probably lighter than the human who will be piloting the boat, which is why I suggested putting the engine up front instead of the human.

[@anthonymayes1340]

So happy to see y'all build a mini jetboat. 3 channels have started one and y'all will actually get it done. Can't wait to see finished product! Keep up the great work

[@wangonguy62]

I'd love to see you guys meet up with Cleetus and his jet boat crew. Looking forward to more of the 6x6 Ranger. Always great content here🍻

[@bigredvt802]

A race for sure! - kzbin.info/door/h8f8vssLddD2PbnU3Ag_Bw

[@LoCoFab717]

You guys are killing it! Im excited to see the rotary trike and 2jz lawnmower finished. This boats and the dream camper are gonna be a killer combo. Keep it up

[@AhmadChelwaEdits]

You guys should definitely make a new power wheels mustang GT build soon! the Barbie mustang is actually a 2005 mustang model.. , I seen a newer version of a mustang power wheels , would be awesome if that happened! and good luck on finishing the other unfinished builds.

[@billycole2102]

Definitely going to have to add some flotation foam or something to that boat so it doesn't sink it looks so sick like it would be terrifying to drive can't wait to see how it works you guys rock

[@GrindHardPlumbingCo]

Agreed!

[@TheDuckumz]

I dunno man there is a video of 2 full grown men in one of them things and it did alright, I would imagine Jetstream designed them to be buoyant enough on its hull design alone...

[@bradley3549]

@@TheDuckumz The point is that if it gets upside down it's going under. Very much unlike a Jetski which is like a bubble and is pretty hard to sink.

[@TheDuckumz]

@@bradley3549 Ahh, i gotcha. Yeah i didnt even think about that aspect

[@AndyKPOV]

I love living so close. I get to see some of this stuff before it's released. Thank you guys for being awesome. And thanks again for being good neighbors (2 miles down the road) but its awesome to see y'all rip up and down the street every once in awhile. I have a second property near lumis/tonasket. Completely flat if you guys ever want to play. I have plenty of toys and custom go-karts too!

[@scooz14]

The problem your going to have is the donor jetski has a molded in fiberglass pump shoe. You really need a bolt in aluminum pump shoe to make this work right in the aluminum boat. Otherwise you'll have to cut the shoe out of the old hull and rivet/fiberglass it into the jetstream hull

[@1one3_Racing]

Yeah I don't think it's going to handle very well at all. But that's not the point!

[@matthewcuccia7671]

He does have a lathe, and has shown he will continue to refine something untill it suits his expectations... I believe we will see him discover and address this issue.

[@leebatt7964]

Early 90’s tigersharks are well suited for transplanting into boats, kawis not so much. That hull is crazy small, going to be difficult to cram it all in there.

[@scooz14]

@@leebatt7964 ya an early Daytonas pump shoe would be fairly easy to graft into that boat. Being that they bolt into the jetski and fit in a rectangle hole

[@brendonschomer5736]

1.37 million subs is rookie numbers for this quality content.

[@benjaminberg3031]

I wonder if Ethan asked all the girls he see how much they weigh? And if they are interested in some weight reduction. 😂

[@-CHaPPy-]

I actually watched your commercial because I love Ariat! I wear Ariat at work and on my personal time 👍 I dig with shovels all the time in this tough red rock where I live and these steel toed ariats hold up to the punishment very well! Great product and sponsorship! Gratz!

[@ciromangione424]

That tiny boat need a wooden vinyl wrap!

[@arjovenzia]

I want a pile of snow like yours. not only can you pull out a snow mobile or dirtbike, but you got friggin jetskis in there. love these mini jet boats, you lads are gonna have a wild time in this

[@LMT069]

what if the seat and gas tank were above the shaft and the engine was between your legs? mid engine style, since thrust is so high mid weight balance could help.

[@1one3_Racing]

I was thinking that. Engine way up front, sit on the shoe with the shaft between your legs. Foot throttle. I think the balance and handling are going to be way out of whack. But I know as much about jet watercraft as what Mike Finnegan has taught me.

[@LMT069]

@@1one3_Racing dog boxing it like a van will also allow it to be heat insulated, quiet, and padded for some grip on your legs to keep the driver in place. fuel lines exhaust, and shaft could all run in a tunnel.

[@45johngalt]

For some reason y'all haven't been showing up in my feed lately. However, I'm grateful to look you up and see all this awesome content!

[@freekshowgamingh60xm]

It's about time you guys got to that project. When your done you should go boating with Cleetus McFarland.

[@Ahis89]

Remember to put some wearprotector on the bottom of the boat! I remember cleetus mcfarland putting some whole boat wide and long plastic thing under the boat.. it really has saved his boat mamy times.

[@PawanNeupanepa1]

You guys are very one of my top favorite youtubers. Been watching you from very long time. Love from Nepal.

[@jesterclown86]

Never rush success already know all the projects will be awesome when they are finished up. Can't wait to see the end products.

[@bsm125]

MAN !! I want to come play with you guys & your toys, being a fabricator, I love to see everything you are doing.

[@x31omega]

Wed and friday two separate builds. Sweet. 👍👍

[@ΠάνοςΖουμπ]

You forgot to write, part 1😄😄. Greetings from Greece. Thumbs up!!

[@marcschweitzer6332]

I’m so glad someone from Michigan won!

[@Me_Nombre_Es]

I can’t wait to see the end result of this build.

[@tylorchadwickful]

Just put the engine in the front and extend the shaft instead. just build a small tunnel for the shaft with the seat right above it.

[@cheerdiver]

Agreed, the shaft has length for a purpose. I would imagine it has to do w/ fluid mechanics, preventing parasitic losses. The engineers sacrificed power loss in the longer shaft for a good reason, IMO.

[@danielcarroll5667]

Don't know what to say or how to say how great you all (sometimes aka y'all here in Maryland) are , make me smile & laugh even when things ain't going so good , thanks !

[@nicnak1608]

Hey guys just wanted to say your part in the car and driver magazine for April is sick 👍🏽

[@igokarts4510]

❤️❤️ ❤️❤️ That's awesome! I think they run tiny race boats in New Zealand. The track is literally a 3' deep trench filled with water. Guys will wreck out and just stand up waste deep in the water.

[@taepowell8821]

Trailering this behind the van project is going to be crazy ! Mini bikes mini boats and mini atvs 🔥🔥

[@jairusswint6703]

Can't wait for the Cleetus McFarland Collab!

[@Dan_Kornfeld]

Epic new project! You absolutely have to get a motorbike into the jetski hull for a jet-scooter! Keep doing what you do!

[@TheWipprSnappr]

honestly i really think yall should get into dinghy racing. It would be right up the alley of this channel

[@cadecarp11]

I belive the water jacket in the exhaust is actually a preheater for the engine so it can get up to temperature and not shock the engine with cold water.

[@cheerdiver]

Correct, it will also have the effect of slowing the gasses down, reducing power. Find a copper/ceramic coating that can help insulate heat loss.

[@nordic5490]

100% correct. Hitting the cyclinder sleeves with cold water leads to cracking.

[@reddog543211]

Awsome video guy's....I remember the projects started now because you mentioned them....you keep each video so interesting that our attention focuses on the project on hand....we are easily distracted....lol.....thanks and keep up the good builds !!

[@simpleg7559]

OMG I love that jetski. When I was 9 we had the exact same one with that same color scheme.

[@kifflama6009]

Every engine made by Kawasaki is truly magnificent!

[@vipercraft4426]

I'm so happy to see this KZbin channel grow! You guys deserve it!

[@RM_Garage]

This is gonna be sweet. If you guys need to source any random jet ski parts let me know. I used to work at a motorcycle salvage yard that had a bunch of them.

[@xxdevo2685xx]

So happy to see Edwin (TYCO) doing so well with this project.

[@karnesrussell]

Yes y'all have my vote for top 3 KZbinr chanel

[@halfwaydecentvehicles]

Omg you guys rule .... how fun utube pop culture 👏

[@themtbchannel116]

With that jet ski body you guys should make it into an amphibious quad

[@adrockey]

I can't wait for this build. I've wanting to put a jet ski motor in a aluminum canoe for years. Make the back flat first. I believe that would be dangerously fast but fun.

[@KoltFin]

I'm not really a merch guy but I might rock a grind hard jersey!

[@every1bleedsthesame809]

You guys build some of the coolest toys ever

[@musewolfman]

I just wanted to say that the Tacoma has given me a hell of a lot of inspiration for when I end up getting a truck again.

[@TheBestOrion]

Yes!!! I'm so happy you guys are finally building this 😁

[@jasonwhite8722]

Another thing to add .. Try to source a Polly bottom slider for the jet boat. It adds strength and allows it to slide over rocks and sandbars etc...you can see what I'm referring to on Cletus McFarland's YT channel.

[@johnbacha8475]

Can't wait to see the camper/boat combo all finished up!

[@thomasbailey8306]

I think maybe that little boat will need a Wing to hold you down on the water. If not that put wings on it, because Its going to FLY...LOL..HAHA..I used to have jet ski and they flat ass fly with fiberglass. Let alone on thin Aluminum...LOL.Cant wait to see this Going..Great Video Guys..

[@twodogsyyc6729]

No wonder I luv this channel so much. So beyond hyped for this build. Towing behind the colonel would so sick

[@Bigalscondosandcars]

I’ll be honest. I wasn’t following closely but this is a build I won’t miss a video on! Love jet boats. I have a yamaha twin engine jet boat but I would love a mini jet boat. I’m not skilled enough to build one though

[@jelly7310]

You should use that hull and put a 4wheeler or something inside and make an amphibious/ATV deal that floats.

[@Hellsong89]

Nah, that would wreck any usefulness of the frame. There is no jack of all trades vehicle, it just becomes master of none and suck. Cant really run same engine on land since jet uses water as coolant and there is no air flow over the engine. If they want to do something like that, it should be remotely driven thing that is its own unit, but it does not much sense to do so. That boat is already tiny and with this much power it will be dangerous to drive in any even moderate waves, so adding this amphibious system does not make much sense. Much rather build their own setup later on that is built for this transitioning, not that there is much use for one in Idaho far as i know.

[@jelly7310]

@@Hellsong89 I was talking about the jet ski hull.

[@vassilyknigge850]

You guys have been uploading so much, I can't even keep up with all lour videos. 😄

[@FordHogge]

Ariat is an amazing company

[@bcy0]

Legends! Can't wait to see how ridiculously dangerous/awesome this boat is at full send.

[@jarekmace1536]

The old jetski hull would make a great amphibious build base.

[@-Sullens-]

was having a bad day then you guys uploaded and it immediately got better

[@Grimm-Gaming]

Yall better bring that down to Florida n go boating with cleeter now!

[@GrindHardPlumbingCo]

That would be fun!

[@Grimm-Gaming]

Gotta do the collabs! Yall need all the views!

[@corey6393]

Can't wait to see this thing plying the waters of Lake Pend Orielle. Would love to be at the city beach boat launch to watch the inaugural run.

[@charleswilson9480]

Sounds like a lot of fun .. remember safety comes first ..

[@lsucody3687]

Build an amphibious land/water jet ski with light suspension and wheels!

[@brandonhaines1920]

You should watch Cleetus McFarland and watch his videos on his jet boats. I think you can get smaller jet controls on the rear end that does the same thing as the jet control you have. Great stuff.

[@momolovesyou9969]

I believe Cleetus has one of these really small hulls too but hasn't done anything with it yet.

[@brandonhaines1920]

@@momolovesyou9969 I don't know if Cleetus would ever build something that is this small tbh. He is like 6.5ft tall and him fitting in it would be a nightmare and extremely difficult knowing this. But nonetheless, I think they would get some useful tips and ideas for their build from what Cleet and Jackstand have already built.

[@momolovesyou9969]

@@brandonhaines1920 kzbin.info/www/bejne/nKGtZ4Wrl8Sao5Y that's the link to the video, they show it towards the end. like I said they haven't done anything with it yet, there were jokes about it being for Garza. Cleetus is into RC so maybe a large scale rc boat would be cool. Either way the grind hard guys will do something sweet with it.

[@ourlifeinwashington4114]

I love my Ariat work boots/cowboy boots. I wear them everywhere. Great quality and style, I bought them at the Sportsman warehouse

[@maxanstine1139]

The thong on the back that changes the direction is called a Jet or Jet propulsor. Good luck getting it to fit!

[@Throttleoutmedi4]

Awesome guys!! Stay braappy!

[@GrindHardPlumbingCo]

Thanks man!

[@XsubliminalinsanityX]

I love that Schecter Hellraiser FR on the wall in the outro!

[@JaZzDoGgyDoG23]

Your content are my "I love the internet" moments!

[@JohnHartman22]

I can't wait to see this in the water, nice addition to the mini collection!

[@shenanigainsmorgisborg6897]

I have been waiting for this video for three years!

[@stevegarmier563]

Thanks to KZbin algorithm I just found u guys and I'm glad i did. This is gonna be awesome when you guys are done with this. I'll be subscribing for sure. Can't wait to see the finished boat.

[@sherriemoon703]

If you can do this and do a video with Cletus McFarland when you compare each other’s boats. That would be epic

[@mattbrown3400]

BEEN WAITING FOR YOU GUYS TO GET ON THIS JET BOAT GAME

[@kash1085]

Yes! These things are so awesome! Cool that you guys are doing this project.

[@tfconstruction5969]

No1 best channel for me

[@fomomofo6917]

It’s funny seeing a reaction to how a jet ski works. Salt water is tough on the old systems around here. Many new ones are closed loop with a radiator now as well as turbo or supercharged. They are fast but heavy 4 strokes now. This is a cool project.

[@ptemogs]

Post this almost every time but UK viewer who found your channel by accident, (looking for a KTM engine swap for my outlaw IRS) and you guys are genuinely the only channel I actively watch now! Been following since the early Colonel Senders days. Crazy to see how much things have moved on since you started, with that..... any progress on the new shed/workshop?

[@pamdo_]

my favorite time of the week is when you guys upload keep up the great work,👍

[@Enigma-Sapiens]

Congratulations William!

[@Benzy670]

I’ve been following pretty much since day one, and it’s amazing seeing how far you guys have come. The opportunities that are opening up makes me so happy for you

[@mattketner7597]

Best Friday ever!!

[@TheTsunamilongboards]

I wanted one of these little jet boats for like five years... they are freaking amazing!!!!

[@Ameritude]

Ahhhhhhhh i absolutely cannot wait for the launching of this boat from the back of the power wheels

[@jax8646]

Sounds sick

[@GrindHardPlumbingCo]

Absolutely!!

[@amccomie]

Guys don't kill the ski-do Hull, build something out of the base, 'New project' thinking 75hp outboard 😆🔥greetings from Trinidad 🇹🇹

[@VesselFitterguy]

AWESOME!!! Enough said

[@billy1503]

Loved this video but I can’t lie I’m even more excited for the trailer build

[@austinstruble4708]

Congrats on the continued success!

[@TheAlleniverson003]

Awesome! Love watching your videos and the awesome fabrication skills.

[@brotherputts3796]

Love this project. The boat looks just like Relic's boat off the Beachcombers. A mini Relic.

[@GrindHardPlumbingCo]

Thanks man!!

[@GetCheezed]

This is my favorite project you have done 👍🏼

[@JosephJonesboy88]

You guys are awesome, one of the best channels on here and I’m always watching for you to drop new videos!! Love you guys god bless America