Tesla Powering my 30yr Old Italian Yacht? And Broken Diesel Engine Diagnostics

In today's episode we're checking out the hurt diesel engine, and talking about new engine options. Check out SimpliSafe here: simplisafe.com/bisforbuild. SimpliSafe is award -winning home security that keeps your home safe around the clock. It's really reliable, easy to use, and there are no contracts.
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Music:
Fareoh - Cloud Ten

[@chrisfix]

You know what I told you on the phone but at the same time I know you’re dying to go gas. I still say rebuild and stay diesel. If you’re concerned about resale, look at the value of gas boats vs diesel. I finally got a diesel boat and will never go back to gas unless it’s outboards and even then I’d try to find a diesel version.

[@neoleomedia1676]

Yeah Chris, as a boater with a gas motor I would love to have it diesel. We own an rv with a Caterpillar C7s Diesel engine and love it way more than gas. Would love to own a diesel drive fishing boat. For now ours is gas, for now...

[@farihasajjad5587]

when did u get a boat and whens the vid coming out??

[@neoleomedia1676]

Fariha Sajjad, he’s actually an avid boater (See Instagram). He has a boat channel called ChrisFish.

[@senjalars]

Check out Oxe diesel outboard. 300hp BMW 6 cylinder diesel. :-D

[@turbomotovlog5588]

What about lesla motors and a big generator they make 400v 20 to 100kwh and bigger that run at 700 to 1500rpm and burn ⅛ of the diesel your two motors burn or forget about the tesla motors and buy a complete kit 1generator 2 motors and battery power packs and controllers probably the best option for you and with a 100 kwh at 400v push that boat to 60+ mph don't try that in not sure if the haul can take that much pressure from the water colliding with the from of the boat

[@luisvallecillo8164]

Diesel....and it’s not even a discussion. Here is a small list of reasons: Ethanol issues suck Diesel much more safe to run on a boat than gas Boat already rigged to run diesel. You would have to install ventilation, blowers and other stuff not needed with diesel Diesel much better torque and it’s not just for top end, but also for boat handling and maneuvering Diesel cheaper and you already know about the fuel expense. Stick with diesel, the next guy who buys it from you would want you to keep the diesels....

[@henryschilling1120]

Luis Vallecillo I’m with Luis on this. I had a 32’ Cris Conny I moored in Scapoose that had twin 283 Chevies. Like you said gasoline is expensive and it’s dangerous as all hell.

[@Kodiak660]

Not to mention the heat those gas engines are going to produce. He really needs to rebuild both of those diesels (or at least rebuild the problem engine and pull down and inspect the still running engine)

[@aususer415]

Give a diesel air and fuel... They will keep running... Underwater...

[@Kephartable]

This guy boats.

[@gregorytimmons4777]

Plus they should last hundreds or rather actually thousands of hours. Trouble free hours that will run hour in and hour out.

[@ryanminer8592]

Rebuild the diesels, buy a “small” boat for a fun LS/electric project.

[@theLyzhendricks]

Good idea

[@1973keith]

Spot on. If you swap for gas engines you need to seriously consider the safety aspect too. Everything needs to be intrinsically safe with added bilge blowers and auto fire extinguishers.

[@corvidflight19]

What about running an engine to power an electric generation system to power the tesla system.

[@PervertedThang]

So, after reading the comments, it seems the overwhelming consensus is to do the right/intelligent thing and rebuild the existing engines. Which means it probably won't happen.

[@will_0018]

Rebuild the original diesel engines imo. They're literally designed for that boat so should be reliable and last ages.

[@chadzentner8213]

@Pornhub Official I'd like to see them rebuild the engines themselves.

[@MegaJustintee]

@@chadzentner8213 same and at the same time give them a little uograde. Cost wise I think Diesel is far better.

[@jf11204]

@Pornhub Officialrebuild the engine, talk with the guy that rebuild them and put bigger turbo on? Mooore power baby

[@ryanfritz8869]

Electric isn't reliable, you need reliable on the water. I say either rebuild or swap to ol trusty big block chevy.

[@Habdabi]

I'd like to see B is for Build send it and make a power boat

[@ianpeters9537]

Rebuild, and reuse current engines. Use the "leftover" money to get a smaller boat, and slap a Texas Speed LS in it.

[@brysonfields2284]

Best idea i have read yet.

[@michaelcaraway2305]

Every yacht needs a tender with a Texas Speed turbocharged big block engine.

[@Kristopher110]

YES!

[@agenttwinky1372]

This is best idea so far

[@fulumukwevho4744]

Great idea

[@dirtybirddaprix1757]

Rebuild the diesel. The channel is about learning things - I'd love to learn more about a marine diesel engine.

[@bonvivant55]

The difference is the oil pan, and everything is painted.

[@billnlori3149]

Fix the Cummins and install a loud "low oil pressure" alarm. Beautiful boat by the way!!

[@richardg8651]

Would have been too easy and not KZbin worthy .

[@axleferret1584]

REBUILD THE DIESELS! This is a CABIN CRUISER and NOT a "speed boat". Too much power will likely DESTROY the boat without MASSIVE HULL REINFORCEMENTS! This is the ocean going version of a MOTORHOME RV. It is an Italian Winnebago or "Waterbago". Go ahead and do some modernization and upgrades, but do NOT try to turn this thing into a "race boat", that would be like trying to put an RV bus into a race with purpose built track cars.

[@agnusdeidrummer]

Bigger turbos

[@buttsexxor]

the twin tesla motors would complement its characteristics of a 'waterbago' by modernising and making the propulsion system incredibly reliable, while being suited to a regular cruising speed. The batteries would also give the ability to have a high power circuit on the boat, you could plug in household appliances with ease. The current large diesel fuel system and twin engines could be replaced with a single small diesel connected to an electric generator as a redundancy backup. Care and planning would need to be considered to prevent the boat sitting too low in the waterline

[@karlvonjena1480]

Hate to say it Axle, but you're not understanding the nature of the Riva. The Riva boats are not Cabin Cruisers or an "RV on the water". They are the AMG of luxury yachts. I don't think you understand what it takes to make a 40' boat that weighs more than 25,000 lbs do 40 knots on the water. That's like trying to make a luxury tour bus that will run an 11 second quarter mile. The closest thing to an RV on the water is a trawler-style boat. Big lumbering boats that have lots of living space, but max out at 25 knots. Your better 40' cabin cruiser/sport fishing boat will max out at about 30 kts. The Riva is like an AMG Mercedes: Luxury and Performance. Not the ultimate in either category, but enough of both to make you giggle every time you use it.

[@mabs503]

Repair the diesel! Get a professional estimate while the engine is still IN the boat. Then pull the engine if needed.

[@relaxinginreno]

I’m with you. Get the professional to look at it FIRST! Repairs will be cheaper than any of the other options they were considering. Then go another 30 years.

[@One_Bar]

Youric Hunt because otherwise you’re trailing a 903 around until you can find someone to drop it off with plus the mentioned possibly fixing it in place.

[@kingofl337]

@Youric Hunt They can perform some tests on the motor to see if the bottom end really needs rebuilding. That types of diesel engines are tough as nails, it could be just head gaskets, or injection pump.

[@joshkiej6601]

might be best to get both engines rebuilt, theyre 30 years old so it definitely wouldnt hurt. idk if its possible but maybe change the fuel system to common rail and he could make a lot more power too

[@Torch4ya]

It would be better to in-frame, but access is shit on that boat. What to do?

[@upnorthyooper1196]

Engine oil cooler is leaking water into the oil. Stick with diesel.

[@Rick-last1]

Here's my nickel's worth of advice: Go diesel, they last longer, and will be lower in maintenance cost per year. Having worked in a shipyard for seven years, from Volvo Pentas to EMD electric diesels,, and having my own engine rebuilding shop for a few years,, please,, go diesel. There are a few mods that can be done to diesels that will surprise you, and will be more cost efficient in the long run. Check with Banks for that, I think you might be pleasantly surprised! EDIT : Also, you might be surprised how engine monitoring has changed since this boat was built,, you can go all digital if you want.

[@TSDSurfaceDriveSystem]

Do you want to buy a diesel engine? We are a Chinese manufacturer specializing in the production of marine products such as diesel engines, propellers and ships

[@davidblalock9945]

As an experienced Diesel Mechanic, I strongly recommend that you get into the P-Pump, remove the governor springs Riva put in it, and install the OEM governor springs. 3300 is the max you should ever run those engines. 4k is like trying to run an LS at 9k.

[@OccasionalBoss]

Nice input!!! Thank you

[@barrishautomotive]

This.

[@AG-pm3tc]

Commenting for engagement, so they will see this internet gold.

[@timgrimes8502]

Very well stated, I can’t agree more I’m also a diesel mechanic. The p pump is the way to go I got one on my 12v cummins. The rebuild is the best option IMO

[@Jethrosgarage]

@@timgrimes8502 Um, how are you going to put a P pump on a PT injected dinosaur like a 903?

[@kkeennyyboii]

keep the original engines just do a full rebuild and maybe update some of the tech for better efficiency and performance

[@georgiapatriot4575]

Plus add some improved engine monitoring maybe?

[@kimnrgaardhansen9172]

I would like to se a total rebuild of the diesel engines... The only way to go.👍

[@tang0l1ma]

Hi Everyone, for what it's worth the sensible option is to rebuild both the original engines so you know for sure they are reliable. Then look at some of the sexy stuff like variable pitch propellers, engine sensors with auto shutdowns, modern gearboxes, balanced propshafts and props and the addition of a backup rudder system so you can steer it if you lose one engine. Looking forward to the next vid.

[@MJFloof]

No brainer in my mind, rebuild the diesels, upgrade your gauges, and enjoy that sweet boat while keeping its resale value.

[@HENLEY86]

Just refresh those engines, they've lasted 30 years thus far, and they are made for exactly this job

[@tallpaull9367]

yes, no brainer. maybe you could do some relatively inexpensive upgrades to them too

[@robrotondo4881]

I used to work for an authorized distributor for Cummins right down the street from Cummins South Eastern Power in Tampa. We were the shop everyone would come to after warranty was over. We rebuilt everything ourselves except the heads which we got recon from Cummins. My job was to rebuild and calibrate the injector pumps. Now while a lot of our work was done to spec, a lot of people wanted to shoot flames out the stacks too. This was easily done by raising the fuel pressures, injector flows, and turbo upgrades. Now those engines probably didn't last as long as a spec engine but those engines got their loads over the mountain no problem. What I'm trying to say is you can do a lot with the engines you have, please don't gas.

[@stevenhughes6548]

Keep what you know will work. What you have lasted 30 years, you would have gone through at least 3 change outs with gas engines. Torque outlasts hp every time. Go Diesel!

[@tomtrd51]

Rebuild the Diesel engines on this boat and build a small ev boat for fun and experimenting.

[@stephenmeservey5172]

That's a great idea. Fill the electric dinghy to pull behind it.

[@darrenswails]

Put an electric motor for the busted engine then you have a hybrid

[@stephenhenderson7277]

Yup leave the experiments for a 16 ft ski boat lol

[@kkeennyyboii]

the ev boat would be next to useless and really expensive to build and can’t be small due to the weight of the motor and battery cells

[@technomen0872]

Honestly keeping a Cummins in it is definitely the safest option. Parts are available everywhere. Even if there isn’t a shop for parts directly at the harbor you can probably get parts from a mobile equipment repair company deal (think like the people who come out to fix construction equipment, they all carry the most common parts for Cummins and probably won’t mind taking them out to the marina

[@AstroTools]

Scenario 1: "You see that B is for Boat episode?" "Oh the one where they swapped in two 408's from Texas Speed and made their own exhuast, and tuned two engines at the same time then ripped it down the river until they pushed a head gasket in the ocean?" Scenario 2: "You see that B is for Boat episode where his diesel was repaired then they got lunch?" "Nah, didn't catch that one" We're in it to win it either way, but this is B is for BUILD! Since when do we gotta choose the smartest option?

[@k.slater1797]

And very cost effective all other options are not logical

[@AxValid]

I actually learned so much in this video, I have never learned more from a video and I’m a car enthusiast/mechanic also stay Diesel

[@McTroyd]

New sub from Emelia's channel! I've found, when I don't know what I don't know, that it's better to stick with what I have. Especially with aspirations to go ocean cruising, you can never have too much power, but you can definitely have too little, while you're out on the blue water. If you're going to rebuild the engines anyway, I'd put some hours on them and give them a chance to redeem themselves. You'd even pointed out that it's a solid block, and it was designed for this application. If nothing else, it buys time to really think this through and do the proper research. You might even find you like working on diesels. Also, be very careful about automatic engine shutdowns at sea. Unlike roads, water is always moving, which means you are basically always maneuvering unless you're moored to something. A sudden engine shutdown in rough sea conditions could wreck you quickly.

[@gichiguy007]

Rebuild the existing Diesels, they are 30 years old for a reason.

[@ducatipaso1386]

Pull core, swap at engine shop, drop-in reman block...done. He making typical newbie errors. It's a learning $$$ curve.

[@stans9293]

When you are facing a large head sea for hours and hours, you will appreciate the mass and inertia of the diesels crankshaft, balancer, flywheel. Huge difference on how a big boat rides with all that weight down low in the bilge

[@darklegend4354]

i bet he is never going anywhere near out of his comfort zone...just sea show off and having fun with his friends...ive seen people renting a 57 beneteau just to go in 3 nearby ports to get drunk and fly back home.

[@butchMoreOrLess]

I'm a new subscriber and a retired truck driver with over 30 years on the road and driving diesels of all sizes. The right way for you to go with your classic Italian beauty, and keeping the value at top notch is STAY original!! Rebuild! There is no way those engines will ever take the abuse of a diesel powering a million mile truck, and when they get worn out, we rebuilt them, NOT replace with them with something other than what the truck came off the line at Detroit with. Who would want a Lamborghini with a Ford engine? Your new rebuilds will last another 30 years easy.

[@darklord1218]

I would just rebuild the ones you have. I put a 4BT Cummings in my Jeep this year. I can run it at top RPMs for hours no issues. It is still all stock so I don't go fast but it's a Jeep and I don't mind. Just nice to have that reliable diesel and good fuel mileage.

[@loluracing]

Rebuild the old ones. Seems simplest, cheapest and probably most reliable.

[@MrMadtractor]

since when do they do anything that makes sense, mostly make nice parts into junk

[@loluracing]

@@MrMadtractor I wouldn't say junk but definitely feel you on the "make sense part" lol

[@MrMadtractor]

LoLu Racing for sure man, he could probably re build the engines for not to bad

[@jadenwells6581]

Use the money you save on other projects or to upgrade other parts of the boat like electronics or lavishes

[@MrMadtractor]

Jaden Wells i’d say probably won’t be much maybe a tank of fuel, boats are not cheap. big fancy boats are even worse

[@jpcii]

I ain’t telling your business, but just rebuild the diesel.

[@AnIdiotwithaSubaru]

- And not trap all the crank pressure a diesel engine makes in a home made pcv system shared with the other engine...

[@kjangmy]

^^^^^^ What he said :) ^^^^^^^^^^

[@barkr6003]

Lol the white smoke when you bought it was the tell tell sign of head gasket failure

[@thomasbrasse3145]

REBUILD IT!!! That would be cool to watch and these are really cool motors.

[@awesome12480]

I think the smartest move is too rebuild the Diesel that’s in there.

[@danielrauh4237]

yes and learn everything about the Engine while you rebuild it. So you know on sea exactly whats maybe wrong

[@wheeln24-79]

Totally agree. I'm pretty sure there's a reason nobodys electric powered more than a surfboard until now.

[@HRM.H]

And eletric motors are known to be terribly inefficient in boats.

[@markeboy1658]

agreed

[@masonblaster3997]

@@HRM.H but it is not as cool as putting new engines in it

[@Overboostgarage]

Rebuild the Diesel engines and throw oil cleaning centrifuges on each of them to keep them running for a very long time.

[@vidznstuff1]

"Oil cleaning centrifuges"????

[@ithemaster1249]

Nnnopppeeee

[@maticsnoj5959]

Hy man, I love your vids! I like your idea! What about changing your drives to, for surface drives. That would be awesome combo with LS.

[@Luuxs]

i dont know the prices in the usa but in europe those drives new cost 100k+ each

[@rodneykandel3162]

Hey guys. I am a trucker from Ohio. The gas engine thing sounds fun. And I would love 2 big blocks belting it out across the river. But from a practical standpoint, and being a truck driver, nothing proforms like a diesel when you want something to go to work for you. And nothing is more reliable. My 2000 Mack is pushing a million miles and I run it hard. And as you said. Reliable, fuel efficient, and lower cost. I love the rumble of a V-8 but Diesel have a cool sound in there own right.

[@pearville37]

No brainer, rebuild those beasts and put them back.

[@Habdabi]

This is B is for Build though.... imagine MORE POWER!

[@kentbremner7828]

I was just gonna say maybe bigger turbos

[@AnthonyMyers1]

Dude trust me. I've done 7 high performance engines in the last 4 years in my boat. The amount of money it takes to get it right is absolutely astounding and I did most of the work myself. TRUST ME, fix the diesels or replace with newer marine diesels. Your heading down a path that could be years and never will be right.

[@jcota2003]

@some random guy my guess not knowing the commentor is that the configuration for the boat isn't quite right and the balance of performance and reliability is wrong. Boats tend to be a bit of a nightmare when you start tinkering or modifying them, on top of that their engines tend to run at consistently high output for extended periods of time, so engines for boats tend to need to not only be high performance but also be built for reliability at or near their top end. Even engines built for 24hr endurance racing aren't running at the extremely high output levels for as long as an engine in a boat. Also You don't have gears to shift through like a car on the road to reduce engine RPMs, basically the transmission is just a differential final gearing with a forward and reverse gear.

[@pauledwards9416]

Haha I’ve done 8 high performance engines in the last 4years , you trust me

[@jcota2003]

@@pauledwards9416 I bought a used boat, and repaired it. Enjoyed it for a summer and a half doing the maintenance on it and sold it to a friend. 3 things I learned, owning a boat is great until you have to fix it. Selling the boat is even better... And finally never sell a boat to anyone you want to stay friends with.

[@airfryerdeluxe5543]

While the obvious answer is to rebuild the diesel, I'm glad you're still thinking outside of the box and trying to do something different. That's what made the channel, I'm not sure why folks are surprised by this.

[@stupidusername37]

The VT903M was used in U.S. Coast Guard 41' UTB's from 1973-2005.

[@mguidice3287]

I’m a marine diesel mechanic, if you have any questions feel free to ask!! Those old Cummins are beasts

[@ryanholmes5256]

MJP jets???

[@cedricmilford5254]

Fix the current engines, and reinstall them. You’ll get a lot of mileage out of them, and you’re not going to lose a ton of $$ if you choose to sell the yacht down the road.

[@travissmith628]

Gotta agree here, the boat world is not like auto, the resale value of the boat with original engines professionally rebuilt will be much greater than that of a resto-mod'ed craft. Plus, its the cheaper option that makes the most sense, saving some pocket money to put into the single seater!

[@mpgorney]

903s are hard to find parts for, even for dealers and distributors. Best option if you don't want to go to a Cummins dealer, contact a local plant or large facility with old fire suppression systems. A lot of them were 903 powered and they may have a source for parts. Have fun!!

[@spencerpritchard6290]

Stick with diesel. There are diesel turners out there.

[@mfalme]

Rebuild the existing engines and learn about diesel that way.

[@Nathan-gj8ch]

just about all the boats I seen electric swapped sank because of little things they neglected to R&D properly like exhaust ports leaking after a few days making the ship sink in minuets. It is about the most dangerous and risky thing you can do to a sail boat that is being used for sea crossings but if you just want to cruise a river I guess that's less danger.

[@Nathan-gj8ch]

@Copter Cop I use voice to text tell it to google.

[@heavenstomurgatroyd7033]

Copter Cop it's actually "have seen", stupid......

[@fullthrottle5293]

saltwater and high voltage electricity...i mean, what could possibly go wrong?

[@JonGuy008]

Rebulid - not only does it make more financial sense but there is something cool about being able to keep something like that original

[@outlawsbank]

I totally agree

[@SUPAHSHARP]

This is the best argument by far

[@globenstine1335]

interesting tidbit. they also put cummins 903s in the Bradley fighting vehicle. (which is a tank if you didnt know)

[@markperrins9485]

We run a D4 in our boat. Single engine boat. Gota go deisel man. 39knotts 55 ltrs per hour at our comfortable cruising speed around 23-25 knots 35-40 ltrs per hour. If you can get hold of a pair of KAD44 be great or a pair of AD40’s. Reconditioned be the way forward. The AD models are basically tractor engines. No complicated engine diagnostics. Love the videos.

[@captainboathands6124]

I’m on team “keep using the stock motors”

[@JPLlewellyn]

I think rebuilding the original engines is the “smartest” play

[@autophile525i]

John Llewellyn Yeah, but where’s the fun in that?

[@pedroduran8157]

You are right on that, could be a spare Electric motor but not principal power Electric motor its not safe.

[@bocat7482]

Generators , solar cells and more battery packs for continuous charging, think like you’re building a sub. Plus fuel cells would work too.

[@pedroduran8157]

cayó i get it

[@buddameyerbuddameyer4598]

Just rebuild the cummins, they were built to run and run, and most marine engines not all but most were built to stay dormant for weeks on end, my vote rebuild, and have fun.

[@TomLentz]

The 8.1 Vortec is commonly used in marine apps, and as an irrigation pump (runs flat out all day). Might look into that?

[@dj_spaulding]

You guys should rebuild the original diesel motors. That is the safest and most reliable option and will give you the most enjoyment on the boat.

[@mizinoinovermyhead.7523]

remember that part of this isn't the cost. He can't really rebuild those marine engines himself thus going that route results in no content. On the other hand pulling cummins diesels from a couple ram 3500's and modding them, that he can do.

[@blackopsrocks]

@@mizinoinovermyhead.7523 you DEFINITELY can rebuild those engines yourself. I dont know who told him he cant. You can get an entire kit where literally the only reused component is the block and head, it comes with everything from new valves, springs, seals to cylinder liners, a new totally redone crank, you reuse rods but they send pistons and rings already fitted to the liners...it really is like legos to rebuild the older diesels like that.

[@neamanja]

@@mizinoinovermyhead.7523 well if content earns money but it burns money more it doesnt really have point think logicly

[@mizinoinovermyhead.7523]

@@blackopsrocks The issue is size my friend, those engines weigh as much as many cars you need a specialized hoist, and engine dolly to rebuild one, yes you can get the parts, but they are a different animal in size.

[@bmwnut535]

@@mizinoinovermyhead.7523 I work at a Toyota dealership and we just rebuilt 2 marine engines based on a Land Cruiser 80 diesel engine. We had to send one of the new blocks to get custom machining done, but we got it done. So I don't think that these guys can't manage if a dealership can.

[@dayVb_]

Holy shit! I've NEVER seen a KZbin comments section so unanimous.

[@watsupitsdenny]

There’s a few nice supercharged LS based options that the current ski/wakeboats use I’m sure their transmissions would also be available.

[@rereg543]

"Don't have a lot of wear on them" Rod: knock knock

[@manicdogfood]

Running a boat that size off petrol engines would be the equivalent of trying to run a car off a twisted elastic band.

[@smithdesignwerx]

Definitely rebuild, changing the motor means added hassle of reballusting boat to keep handling

[@stewartcrowe80]

that " backfire" you mentioned was probably a crankcase explosion caused by oil mist ignited by bearings runing red hot, The excess crankcase pressure created was relieved by blowing the rocker cover gasket and the oil fill cap

[@drg7503]

Diesel/upgrade to bigger spools/ upgrade fuel management system. Then once tuned look at your meat cutters for size and pitch and retune depending on top speed. You will never miss the torque if diesel. Love your racing marine mechanic in Michigan. GL.

[@davemundy7237]

Rebuild the existing engines, after a rebuild they'll last for years

[@RayFinkle]

like really.. why do anything else? Those engines are your best most cost effective option.

[@AZCRF412]

They are hard to find parts for and the parts at expensive

[@581apollo]

What about rebuilding the engines but improving them to make them more efficient like electric hybrid.

[@oak8728]

I really really wish automotive engines followed the OPs method. Like, really wish, but instead years of tweaked/paint huffing “engine builders” have made the reality factory first.

[@inkinen]

Rebuilding is the only reasonable option. Drop a couple thousand on those engines and they will last another 30 years.

[@tomasalvarez7809]

Chris my brother. Stay diesel. Rebuild those cummins and call it the day.

[@thelampire]

+1

[@vwssit]

last thing you want is something goes wrong (i mean its B is for Build) in the water, its alot harder to get help on a boat in the middle of no where in the water than in a car on the side of the road...

[@blackfly29er]

... And while the motors are being rebuilt the hull can get refreshed, and all else gets some big B is for Boat 💜

[@suzukitard]

There’s a reason everyone uses diesels for larger boats

[@samuelmayhew2749]

Rebuild for sure. They will be less problematic in the long run. Seen multiple diesels with 40,000+ hrs on them with not a lot of issues other than common things such as injectors and obviously fluid changes and little things. Like you said they are made to keep a constant rpm while delivering peak torque/hp.

[@markpetrosky3128]

Rebuild the stock engines and maybe look into a turbo upgrade

[@duncanweir8773]

@@dongdwella4922 they dont, lobster boats use em all around where I live.

[@steveredmond6468]

Me being a 27 year marine mechanic on small and large pleasure boats be happy and just fix the one damaged engine and do yourself a favor!!!!!👍

[@bendall2006]

Rebuild the engines, enjoy the boat. This is already a perfect setup, and I would love to have it. Look for a talon 22 tunnel hall boat, do a crazy build on that rather it be gas, diesel or electric! Have a cruising boat, and a 100 mph boat.

[@countryboy5829]

If you go with the batteries treat as a diesel submarine which uses a eng or a generator to charge the batteries while driving your boat, I'm prior Sonar Technician in the navy and I tracked a lot of them.

[@Frankie_M.]

I would rebuild the two original engines with higher horsepower and torque make them bulletproof and you save a ton of headaches 👍🏼👍🏼👍🏼✌🏼

[@brysonfields2284]

And money in the long run

[@connordevine9872]

Rebuild yes but no need for higher horse power or torque, if anything for reliability reduction of power is an option 20 knots is desirable 40 is being an ass hole and will get you in trouble on the water. Fun on a flat lake but on a choppy sea or river will turn into a nightmare

[@bsxxfurballxx692]

@@connordevine9872 unless your going/leaving Columbia.......😉

[@connordevine9872]

@@bsxxfurballxx692 not into drugs just comfort 🤔🤔👍👍

[@Kaufkin]

Agreed, unless there is something dramatically wrong with the existing motors, rebuild and use the money you save for other projects....

[@stefanobisello301]

Don't waste money, engine rebuilt is the best option. Then you can do some upgrades, like fuel pump, injectors and turbos. I suggest bigger oil sump. Greetings from Italy 🇮🇹

[@boattguyafloat]

903 is a boat anchor. Good luck getting parts!

[@dummiekid565]

Keep the rebuilt diesel, and love the series, hope all goes smooth with no issues

[@WWOWS]

Lol this isn’t even a real question. Rebuild update and upgrade the motors you have.

[@ghomerhust]

agreed. a full refresh, modern turbos and management system, and that sucker should run solid for another 30 years.

[@GunzCars_Games]

@@ghomerhust easy 30 years

[@brentspang9092]

Rebuild the current engines. It’s the only option that makes any sense.

[@kjangmy]

^^^^^^ What he said :) ^^^^^^^^^^

[@ramiro21541]

Yeah rebuild and put oil P gauges with alarms. Or computer controlled if possible that would be it

[@Boosted26L]

Agreed. Engine swap is just stupid

[@buggerlugz6753]

totally.

[@frayedknot21]

Definitly, only option.

[@YouvBeenThumped]

Another thing to consider, Is by going Higher in the RPM Range, Other things start to Generate more Heat like the shafts and seals.

[@tech88596]

I was going to suggest Cummins turbo but hey, they are! Rebuild & refit 😎👍

[@leeperkins84]

theres a reason big machinery runs on diesel, keep the diesles in this and buy another boat for a texas speed LS!

[@demaqples]

Rebuild the existing Diesel engines. Cheapest option by far and will more than likely be the most reliable option.

[@Mercigated]

yeah braaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

[@Habdabi]

Yeah but thats pretty boring and slow.. this is B is for Build Not S is for Snooze! More power!!!

[@Mercigated]

@@Habdabi deisel

[@mhrepoman]

Since you gotta do new bottom paint anyway, you should consider doing this stuff called smart armor made by Hullspeed. Its a protective bottom coating that protects the hull, while also drastically reducing drag. The company claims a 10-12% increase in fuel economy and top speed. I used a similar coating from the same company on the bottom of my 19'6" hallett jet boat and it actually works. You just prep the hull by sanding everywhere you want to apply the coating, use a high-bond fiberglass primer, then you can spray or roll the product on the hull. Personally I would recommend spraying it. On my boat I had to do some filling work and make sure the hull was perfect straight, then primed it, then sanded it. I did that 3 times before getting it perfect, then did 3 coats of their "F-series" product. My boat did 76 MPH on GPS before I did the work on the bottom of the hull. Granted, straightening and refinishing the hull on its own would have yielded some benefit, but after doing all the work and putting the boat back in the water, I knew right away that there was going to be a drastic difference in top speed. The engine is a Ford 460 bored .030 over with a stroker forged crank making it a 521CI BBF. Its a full roller engine and is running a holley fuel injection system. The engine did 730HP on an engine dyno and built power from 3200 all the way past 7000rpm, but i limited it at 6750 to be safe. The pump is a fully built Berkeley 12JG with a 9 vane bowl with polished runners, stainless AA impeller, inducer, race style intake grate, extended length droop snoot, custom ride plate and modified place diverter so I can throw a HUGE rooster tail. Anyway, long story short, I went from 76 MPH to 86 MPH on GPS! I still have some tuning to address as well as some other adjustments to make but im confident it will hit 90 MPH next summer with the right conditions. Best part about my boat is that it cruises at 40+ mph at 3600rpm. I highly suggest trying that product out!

[@postaboks]

They may be 30. years old, but not 30. years of wear and tear, you could say they only have 1-3 years of wear and tear, a rebuild and trim for best fuel economy is the wisest thing to do, all the best B! :)

[@m4t42]

Rebuild the existing engines. They are a reliable known quantity.

[@jnic2003]

Nah I say get some real inline 6 Cummins

[@gtoger]

Diesel. Why do boats, ships, buses, high-powered generators, all sorts of heavy-duty industrial and construction equipment and indestructible old Mercedes run with diesel instead of gasoline? Because they're built to last. Treat the diesel right (make sure it has oil pressure!) and it won't give you problems. Treat a gasoline engine right and it'll work most of the time, but not as long. Put a non-marine engine with automotive stuff in a boat? It'll be OK for a while.

[@DarrenHouston]

WOW, Almost exactly what Chris said in the video. Go call a Tow Truck!

[@635497688]

Twin Merlins like a WWII PT boat.

[@IllegallyAcquiredKIA]

How’s electric not reliable??

[@dhooter]

@@IllegallyAcquiredKIA Electricity and water dont mix well

[@OK-Z4]

stick with the Diesel Engines ...there are Fine... AND Upgrade the Propellers... there have been much upgrades since 30 Years

[@allevy2667]

Been boating a long time including at one time owning a propeller shop. My take on your situation would be to buy either new Cummins motors or Mann motors, lighter, more torque. Advantage much less maintenance than gas, and much more dependable.

[@BrewdasDM7419]

Wow, I didn't know the Volvo Penta engines were that expensive. The IPS (pods) would be really cool, with 30% improved efficiency and joystick docking. Maybe you can find a used set in Florida? It is the hurricane season. 🌀

[@jamesfurrow8983]

Rebuild the original Diesel engines, they’re so cool.

[@adamheron7796]

Well if it hasn't been said enough here is one more time--rebuild the original powerplant and show us what 40 Mph all day long looks like.

[@303Estates]

great video! question, when you looked at electric, did you recalculate performance eliminating 2 super heavy engines and huge fuel tank, and the engines related stuff, exhaust fan, transmission, etc... So, very cool video and thinking out of the box!

[@ryanpek]

Rebuild both motors. Add all the protection alarms. Show the process ! Looks fun

[@D1PAYAN]

REBUILD. THOSE. DAMN. ENGINES!! There's a reason why they are there!! I also love gasoline engines but here diesel is the one to go for in marine application!!

[@philiplevett7695]

Sounds to me like the Italians already did the thinking on this one! How about new turbo chargers on re-built engines. A resto-mod and the bonus is that you all get to learn about diesel engines...

[@kimosabbe50]

Could not have said it better.

[@playingbadgolfwell9732]

In addition to all the benefits you've already discussed with regard to diesels, marine diesels -- when well maintained -- will run around 5,000 hours between rebuilds. Also, I wouldn't worry about pulling the other engine. Just rebuild the starboard diesel and worry about the port engine whenever you need (could be years.... or well-after you sell it to someone else.)

[@bertdejesus3578]

You can install a vertical wind turbine and solar cells to charge your batteries. You can also install a small diesel generator to charge your battery....

[@Muddymikey]

Keep her stock and rebuild the Cumminses. There must be a way to monitor them electronically.

[@randomoldbloke]

Mike Rossum Murphy gauges , no electronics except alarms switches simple 100% reliable

[@randomodbuild]

For a yacht, I’d say stick with diesel. Maybe for a speed boat then go with Texas Speed. But just for cruising and reliability and the cheaper option then go with the diesel

[@itsurboijack851]

We have a 1988 33 hydra sports with dual 250 Johnson’s. It also has a deck that makes the overall-length 38 and weights 11 thousand pounds

[@itsurboijack851]

It runs a top speed of 46 mph

[@itsurboijack851]

Theses are outboard

[@lukastorr2899]

Rebuild and reuse, or stay diesel at least. I am a Officer of the Watch in the Navy, and we do huge amounts of fire risk mitigation and fire fighting training, one of the biggest mitigations is the fact that diesel is significantly less flammable than petrol, hence a huge reason why most marine stuff is diesel. Also the other engineering stuff you mentioned/has been mentioned in the comments is also super valid and in favour of diesels.

[@aidan_sp4513]

Diesels, a boat is something to enjoy and all the other options sounds like issue after issue. Keep er simple

[@tomlindo2863]

To be fair, boats inherently are issue after issue. To your point, why make more issues to have to deal with?

[@SC0TTRS]

Rebuild both Engines and refit. Hassle free sailing for years to come, piece of mind and good selling point if/when you do so.

[@richardsantilli1954]

reading these comments and listening to what this guy says ..tells me many of you guys don't know dick about boats, yachts in particular. those diesels I this boat were junk 20 yrs ago..and yachting is expensive..the guy who sold this boat to him took him for a ride. I would look for some older cats a 3208t version. they are reliable and way more common. easier to obtain parts for ..just not as much hp.

[@smokingcheddar]

@@richardsantilli1954 but that might be out of his price range

[@timpindell8178]

Find someone that knows these engines and see if they can be tuned. You can still add all your shut offs.

[@joecambodia1326]

3208? C’mon man, that’s a tonka toy motor.

[@daleho3792]

Hey if you want to use electric, you can check out the Wider 150 which uses electric pods. They run generators instead to power the motors. something to look at. FYI my perference is still diesels as gas is way expensive to run.

[@Dusty8374]

Want to see these the existing engines get rebuilt. Videos learning about these iron giants would be super interesting