Got New Transmissions for the Yacht! How will they work with an LS? 

why not use the raw water pump that bolts to the front of the crankshaft?. more reliable with one less belt to contend with and should have the room since gas eng is shorter than diesel.

Oh no no no... mistakes all around, consult a boat expert PLZZZZZZZZZZZ

Boat stands for "Brake Out another Thousand " . Do you know what you call a boat with a hole in it ? ....... a sink .... do you know why boats don't like the number 5 .....because sinko..... horrific jokes aside cool build the boat looks sharp.

I hate diesels in cars. I loved the Cummins diesels in this boat. I looked forward to the rebuilds. But damn I want to see this LS build now!!! Performance and fuel consumption are gonna be interesting.

Duh

Sup w this project?

Keeps?

The springs in the dampening plate is to reduce the shock-load created when the transmission is shifted into gear and the heavy propeller and shaft isn't spinning.

Youre making a huge mistake. D is for dumb..B is for bye.

This video is back in November today is April 21 what's happening now?

Bad bad move gas yes he's must be filthy rich there is a reason why those engine in that boat

OMG, I totally overlooked that you are installing an automotive clutch on this thing. NOOOOOOO. The clutches are internal to the marine transmission! Do yourself a favor . . . STOP and overhaul the original Cummins 903s!

You know you could have bought everything you need to overhaul the original diesels for a lot less than what this conversion is going to cost. www.dieselpartsdirect.com/cummins-small-v-engine-parts You are probably going to have to use a different reduction gear ratio in the trans. You will need new props because you will be WAAAAYYYY over propped with the originals. You will probably need new shafts and cutlass bearings if not new struts, too. Are you planning to go full raw water cooling or freshwater? If raw, that engine-mounted centrifugal pump isn't going to work, you need a vane pump. If you're going to go fresh you need the intercooler and all the plumbing to go with that to include fuel coolers, oil coolers . . . Then you have to empty and clean your tanks - and if they are fiberglass, you're probably screwed because there are a lot of issues with fiberglass tanks and gasoline with ethanol in them. You'll have to replace the genset as I doubt you'll have room for a diesel tank for it. Then all your accessories need to be marinized versions because any spark they produce is going to turn the boat into fiberglass splinters if there is a fuel leak - not an issue with diesel. Also, why did you make a "catch can" for the original diesels? They are designed to suck in the blow-by and burn it. It's not like a gas engine. BTW, you lost all that oil in the one engine because it got by the cylinder walls of those two slapping pistons. All that oil got burned in the combustion chambers. There's a reason why you want a "pillow" to shove in the intake of a diesel if it runs away. There is also supposed to be an automatic shut-down for a diesel if the fire suppression system goes off - the engines will just suck all that out and keep running - a gas engine will be suffocated. And, as others have said, your fuel bill will be INSANE!

this is the single most dumb ass project I have ever seen . it is to embarrassingly dumb to watch any more of it . Just rebuild the Cumming's motors & enjoy the boat .

I bought a used Lamborghini but instead of fixing the engine I called Honda to retrofit a new engine for way less $$$ Same downgrade only your idea is actually getting done. B may be for 💥 BOOM. Please stay safe guys.

When you set out to build your jet boat and replacement for this boat, I would suggest that you purchase a software package from AeroMarine Research, called "Tunnel Boat & Vee Boat Design Program. I am preparing to build a tunnel catamaran with twin 5.7L Mercruiser I/O engines. I designed the boat prior to purchasing the software. When I plugged in my design numbers to the program, the predicted top speed was ~60 mph. Tweaking the hull design using the software, the predicted speed is now ~95mph.

Ignore Keeps, just subscribe to Baldcafe

What happened to the this project.

Caterpillar and Cummings both users 2nd belt to drive the salt water pump that way you can matter anywhere and tension that pump separately mix a lot easier and cheaper

Mercury marine 32 valve engines would of been cool

I don't know diddly about it, but I have flipped through several boating channels and in a few I have seen where some engines have 2 starters. They are only ever using one at a time, but two are installed... I am going to guess there is a switch that swaps the main power wire from one to the other.. Something you may want to look into... Again, (DIDDLY), but,,, are you sure the water pump is turning the correct direction??

Great job however will it fit in the boat??

Please say damper, not dampener. Just saying. 😇

I think it's a horrible idea to switch to gas

can't wait to see the final cost $$$$$ !

I'm going to stop watching this build now, so disappointing

What about the diesel generator you going to keep a diesel tank for it or you going to replace the diesel generator with a gas generator

It’s a nice engine

He must have a deal with Texas speed or something so he must use their engines. Imagine doing 5500rpm and going like 30mph, that will be deafening, boring, expensive AF. Please please listen to the folks that know what they are talking about(not me)!

Guess there was a significant delay in the arrival of the engines for the boat? It has been crickets since November?

You know how to fix a power boat? Buying a sailboat

Update?

For all the trouble, why not commission a boat frame and do the fitting instead of fixing all the problems of your existing boat..

We need an update! Are the engines ready to go in?

Hope your new engines are marinised, ie stainless valves etc

um you need compressed air for the plasma cutter so you need another 220 line

my freind. no offence. but. do some research. you are ruining a high quality itialian boat.

Only thing easier than becoming a boat engineer from your garage is launching a manned rocket into space. Ask Elon musk

Do you think you have enough room in the bilge for two of these engine setups? I hope so!

Running the LSX engines is gonna be bad ass, don't get me wrong, but I think it would have been sweet to run a pair of cummins 6.7ltr turbo diesels. I would have yanked all of the emissions crap off of it, upgraded the turbo, injectors, changed the intercooler over to an air to water style and upgraded all of the piping. Then I would have done through haul exhaust out the transom. Then for the transmission I wouldn't have done a reduction gearbox, I would have gone 1:1 since the cummins would be at every bit of 1100ft lbs of torque! That boat would get scootin pretty dang good with the right prop selection! Only thing I'd do with the gearboxes and props is I would have them rotate in opposite directions so they rotated towards each other, so the port side prop turning clockwise and the starboard side would turn counter clockwise. At speed its not a big deal, but at slow speed the steering is more precise. When both props turn the same direction, the boat will tend to walk sideways in the direction they're turning even when steering straight. When they spin opposite of each other then it will go perfectly straight. Either way, that boat is going to be a blast next summer. I'll probably see you out on the Willamette! I'm out on the river almost every weekend. I may even have my new boat which is a Baja H2X with a 496 H.O. EFI that I am looking at getting. Keep the videos coming bro!

You should of kept the diesels...

Nice sparky open alternators. They have two high current brushes to magnetize the rotor inside, remember? They will, together with the inevitable gas vapors in your bilge, make your boat lift off like a rocket!

This is one of the most retarded projects I have ever seen you could have had that Cummins rebuilt during the first video all because you never even checked the oil and thought no oil pressure was a broken gauge 🤣 them little ass gas motors are gonna be like pissing in the wind on that big boat

Don’t forget about the “zincs”....

B is for bad decisions

Just curious when the installment will be out? Binge watched the first ones over the last two days, craving more. Lol as a previous owner of large gas powered cabin cruisers I'm very curious to see how this all turns out. I've been wanting to step into the over 40' realm of cruising but the expense of the diesel engines and such is scary. Hoping your boat build turns out well and I can profit from this knowledge and be able to make the leap with a lot less worry of ending with a houseboat rather than one that can leave to the dock. Lol Almost bought one that was, but the whole engine nightmare gave me enough pause on pulling the trigger that it luckily sold before I was ready to commit.😁

I worked on a 27ft inboard with 2 327's, a right and left hand. I got to rebuild them both and the only difference between the left and right was how the cams were driven. The right hand had a chain and the left hand used a gear between the crank and cam. I can't remember but the cam may have been different but I don't think so. That was 43 years ago.

Why Why Why would you LS swap, fix the engines

Your raw water pump should run off of a separate belt than the serpentin because you'll be removing it in servicing it often

Twin turbocharging each engine with water to air aftercooler will put out an easy 500hp reliably. This is why virtually ALL Diesels are turbocharged.

Maybe he is hiding the gearboxes were on there way too. Plus olde wiring. Twin LS swap is cheaper then IF they can handle the pace.

👍😁 Interesting how fuel consumption will work out. That boat is a heavy old girl and then the wife. Gamble.

If it works or doesn't work.....Its youtube...... you watch he MAKES MONEY. Bottom line

m.facebook.com/groups/416725958704464/permalink/1290790981297953/

m.facebook.com/groups/416725958704464/permalink/1290790981297953/

Wearing ball caps causes hair loss. It's like a tourniquet for your scalp.

Is swap ffs 🤦‍♂️ just lost all credibility smh. There’s a reason big boats don’t run petrols anymore

Hahaha Shelby would be jealous on this beauty

THAT OLD PIECE OF JUNK ONLY LASTED 30 YEARS . NOW THIS SUPER LS IS GONNA MAYBE MAKE THREE YEARS . BABTISIM BY FIRE! OR $$$$$$$$$$$$$$

You wouldn’t have to talk so much if you didn’t repeat yourself so many times in one video... love the channel, just do the work and it will speak for itself!!👍🏻💪🏼💪🏼👊🏼

Rename this to " Backyard Butchers With No Fucking Idea "

You Sir have balls the size of church bells taking on this crazy boat project, and I’m so very down for it!

Lol nobody has a set of jumper cables or a remote starter

Wow is this for real or just entertaining? They just don’t get it

would have been cool to repower this yacht with a couple 1050-1350 merc marine racing engines..lol.. big bucks though

i have always wanted to repower an offshore powerboat with a couple bi-turbo 4.2 V8's that are in my Audi RS6 .. high tq , high hp , efficient and 440 lbs each ..and never break , built by cosworth

Bro I really missed ur face

Should have put a powerdyne Type blower on it . Doesnt need to over boost it but will give it some comfort. That belt tensioner routing will not work by the looks of it. The 3500 lb diet that that riva will have will make a big difference. like getting your big fat friend off a 300hp bass boat.

Could you possibly try to NOT jerk the camera around so much ?

Dude, its '..working from' 'off of' so wrong. A bit like putting two gearboxes in tandem in your car.

the trans should be elect

"Italian Transmission" I don't think the "German" company ZF Friedrichshafen would appreciate you calling them that. They make awesome transmissions, I have a ZF-5 in my 92 F-250.

Would be better to use two separate belts. Less stretching and breaking. Longer life

For all those who are commenting auto engines shouldn't go on a boat, The 7 marine's 627 is the worlds most powerful outboard engine made from a supercharged GM gen4 v8 block.

I am doing this because one of my closest dearest friends Tim who does exactly what you guys do with limited resources and time. Like you he is passionate about cars and knows his Sh!t lets say. I strongly urge everyone to help him out like we would these guys at the drop of a hat. Lets give some love to the mechanics from the north batteling more than just car issues. We fight the cold! I have sent money bought merch because I believe in people who believe in themselves. Please believe :) Heres his stuff hope you enjoy! us-first.info/more/S52cXhGuVJkw3eOOi1b4jA facebook.com/253industries Show some love!!

Go electric water pump makes things so my easier

Patreon is a Pseudonym for Begging Bowl. Or Freeloading.

Eventually this will fail, and those LS engines will be put into the next 2 automotive projects.. but we want to see some different engines. JZ please

Oh what waste if a beautiful boat and engine

Not all boat engines are counter rotating sometimes it's the pitch on a props

You should stay with the original engines

I hope the sea water will be easy to access

Dampening plate or damper plate? Which one is it?

Definetly not a marine alternator

I seen 2 inboard 454 on yacht like his and it flew buddy. Hater let him do his work

As long as you have the horse power and the right pitch on the prop she will fly

Guys i tell you their are alot of hater out there

Next video sponsored by Lawson bolts maybe.

As i watched this how you are mounting all of the accessories, did you give any thought to engine mounting? it is very specific how the shaft aligns to the transmission and stringer location and engine mounts to location of acessories

I don't know a lot about boats but rather than one gearbox in reverse, one in forward, do they have opposite pitch screws ? Not sure I know if they counter rotate or what ?

Sorry, Dude, but I’m done watching boat videos. I subscribed for automotive videos and that’s all I’m watching in the future.I’ll stay subbed but I’m ignoring the off-topic videos.

This is insane. If you include the man hours these things are going to have to have cost a couple hundred thousand dollars each. It’s just crazy

This IS pretty cool stuff. I’ll say it for you.

Loud and slow just how I like it I’m not a boat guy and I can tell how bad an idea this is😂

I'm going to ignore the dumbass idea of replacing diesels with gassers because everyone else has covered that and I'm just going to assume you've already done the stability calcs on removing over half the engines weight and will be locating the required ballast in the appropriate locations. Seriously, broh... just stick with cars. You don't know fuckall about what you're doing here.

Soz. Can’t go no further with this. You are just a fun boy. I like traditional, not kids stuff. Thought you would get something sensible. Good luck.

how much are you selling the cummins for and where?????

I am so seasick, after watching this video.

Using C.A.D - Cardboard Aided Design

Can you hire that surfing chipmunk for the boats debut? That's the only thing you be able to keep afloat cause this things gonna be slow...