Tearing Into My 14L Diesel Boat Engine To Find The Damage
8.10.2020
456 867 Näkymät
In today's episode we're tearing into my Cummins VT903M 14L diesel boat engine to see how bad the damage is and if we can fix it.
Huge thanks to Texas Speed for partnering with us on this one, check them out at www.texas-speed.com/
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Music:
Fareoh - Cloud Ten
Those pieces of rubber at the 8 minute mark is the impeller fins from the raw water pump. Most likely either from a previous failure and was replaced by an armature.
Chev it....LOL. Just order a dumpster now and get it over with. Make sure to put a fire suppression system in now because your insurance company will make you put it in later.
you should have checked the filters before starting the first long trip
VT903 is the same engine used in the M2 and M3 fighting vehicles and their variants. Good stuff there.
One question you couldn't get a tow from the slip to the hoist
I also disagree about going gas. Big mistake. Second mistake is going with a company that does not specialize in marine engines. Although I have a 454 (7.4L Merc) in my boat it does not use the same parts as a car 454 at all.
I hope you have $100,000 lying around. That's what it's going to cost to get these things properly rebuilt. Trying to do this in the backyard with people that have zero experience isn't going to cut it. That impeller was never changed because there was no room to get to the front of the motor.
I DONT AGREE...WITH NOT REPAIRING THE ENGINES..Why on eartth with you guys and the equipment you have and the money you all make, DO NOT HAVE THE CAPABILITY TO DO THIS, when a 3rd world country like the PHILIPPINES can literally do that repair on the side of the highway without breaking a sweat, with welded pipes as an engine puller and a large come along and have them drop the crank right there.....[IVE SEEN THIS DONE WITH MY OWN EYES BECAUSE THE COMPANY THAT OWNED THE TRUCK WANTED IT REPAIRED ON THE SPOT BECAUSE IT WAS MORE FEASIBLE THAN TOWING IT ....it was in a remote region], Personally i could repair this engine by myself in my own house and i dont have A MILLION SUBSCRIBERS...smh.......people here pull V10 ENGINES ALL DAY LONG [much bigger and heavier than these] with come along hoists and manual labor and the peeps here weigh 129 pounds [thats filipino men] and they manage to repair that said engine within weeks.....getting the parts from China..[IM JUST BESIDE MYSELF HOW U GUYS QUIT BECAUSE ITS NOT YOU TUBE FRIENDLY.] Then why work on boats if your not equipped or prepared for it.......smh...DONT GET OFFENDED im not busting your balls but im just shocked how you all think doing this work is harder than doing a RESTOMODDED MUSTANG....i dont see a difference....
Rubber in your cooling system is disintegrated impeller... get used to it... you must change these every year and pull the heat exchanger if you find any impeller blades. You are a babe in the woods, get a good Cummins mechanic to advise you. You have insufficient knowledge to make a good decision!
A car guy who thinks diesels can be replaced easily in a boat... NOT. Rebuild these ...
GET A CUMMINS REPAIR MANUAL.
Drop both engines at a Cummins shop. Two weeks later pickup your warrantied engines. Now you have several years of trouble free cruising.
boats going to be a fucking TURD with a gasser in it.
B is for Broken......
Two gasoline engines will kill you in a explosion. This makes only sense if you are a Drumph voter. In that case go ahead.
As user 28cruzin had greatly detailed in his comment and is 100% correct! It's a boat "Break Out Another Thousand" and any work done on it will always be expensive. When you bought the boat did you have it surveyed & did a marine mechanic check the engines? Me just looking at that engine I can see red flags. Green corrosion on the water pump & other areas. Flaking rust in areas where you don't want it. The amount of oil that you had loss, I doubt it came from where the water pump gear assembly. Seeing the color of your oil on the oil filter my guess you may have an issue with your oil cooler & I'd suspect you having issues with the aftercooler "heat exchanger" with all the fragments of rubber from the impeller are a tell sign it hasn't been serviced. I'm sure the anode is completely gone too. People in the boating industry do swaps from gas to diesel for a reason & not the other way around, for torque & fuel economy. So get ready to replace the whole fuel system including the fuel tank, transmissions, shafts, stuffing boxes, cutlass bearing, props, & gauges. Plus with gas you must install at least 2 bilge blowers. That's a heavy boat for gas engines, you better install a large fuel tank you're going to need it. Regarding the value of the boat, it will be gone. She is worth more with 2 used diesels engines than 2 brand new gas engines. Just the word diesel on a boat gains massive interest. Here in New England, any vessel that is 28' or more and has gas engines, you can't give it away. The only exception would be speed boats, then again they don't weight that much & built for speed. You're going to be on drydock for a while. Looking forward, on seeing the challenges.
🤦♂️
Wrong move DUDE.
JH diesel is disappoint.
Speaking of blowers, don’t forget to put a couple of them on the engines!
I was going to comment but now I am just leaving your channel
I wish you well. This is a very big project for non professionals.
Pull the valve train before unbolting the heads.
If you had a lot of exhaust smoke and gross oil loss, it was probably a turbo seal that caused the oil loss.
It doesn't pay to rebuild them there's no technology a set of new used diesels whichever way you go brand wize , cat, Cummings, Volvo, Perkins, will be more efficient fuel wise and power-wise and the boat will run 10 times better are you most definitely grab some more speed do your research
The "fins" are vanes.
This is painful. Those rubber "shards" are clearly the raw water impellor.
When you have oil & coolant cross contamination, the first thing you check is the oil cooler.
I agree with the decisions to go gas in this case. After this owner this boat will be scrapped its just too old, upgrade everything you can and enjoy it for a few years
oil on the dipstick says head gasket
can tell you have no marine experience, those rubber chunks are from your raw water pomp
I just saw a brand new cummins 903 marine for 15,000.00. 400 hp
I hear a lot of excuses. Gasket sets are available. Diesel engines are expensive. Very expensive. But you get to do whatever you want to do. It's no going to exceed it original design speed. This is going to be fun to watch.
I like that fact you are going with your strengths and the 468's are a good starting point, but you are DEFINITELY going to have to turbocharge (NOT SUPERCHARGE) them! You're going to need 800-1000 lb-ft at less than 4700 rpms if you want them to live and last with the marine duty cycle percentage of time over 75-85% load. Stupid-fast cars with 1000+ HP spend mere seconds at 80-100% load and 90% of their time at less than 15% load. Airplane engines are much the same way as marine engines. My "built" Continental IO-550 made 370HP and 720 lb-ft of torque at just 2800 rpms, but it spent 75% of its time over 2300 rpms. 10 lbs of twin-turbo boost should get you around 950 lb-ft and 825 HP per engine at 4700 rpms. I'm thinking a nice easy 3500 rpm cruise would get you something like 450 HP and 700 lb-ft or torque with 4000 lbs less weight to lug around. Sounds pretty doable to me. Best of luck.
Look at used gas trucks vs used diesel trucks. You’re wrecking your boat. But it’s yours, so I’ll watch. 😂
Go hybrid. Engine to charge battery's for a hi torque electric motor.
whadya think, about 2000lbs x2 compared with the LS engines? and half the torque? There seems to be a ton (pun intended) of surplus military zero-time engines out there under 10k bucks. Parts dunt seem to be rare and hard to find. Hell, I think you just wanto put a car motor in a boat. I know...your boat. But we're along for the ride, it just got a little less fun. Put some t=0 rebuilds back in there with fatter props and see what she'll do.
In the class 8 world we usually send oil samples out for analysis, costs $35.00
903s are junk
the reason ls motors have a steam piping is because they were designed by ppl like you. lol. good god. Its cool to not know but damn...basic knowledge of how diesels work would have benefitted you before u made this vid. So let me educate you a lil....what you have for a failure on the piston is called cykinder wash down! ur injectors failed and washed her down...burned all ur oil. coolant in the oil just lookin at your heat exchanger, might check your engine oil cooler....oh and twin ls engines sound dumb...hope texas speed can make a counter rotating ls to reduce torque steer.
You should have plenty of room for more fuel tanks cause your gonna need them.
Hence why they sold it. Possibly promptly as we found with our purchase later on. Allways ask many questions, you may get a tad of truth ! Good luck
wait a month and put the right motor back in
So what is the name of the saudi oil king you sleep with ?
Blew a rod! Cracked head, blown gasket! Not happy in engine compartment.
2 happiest days for a boat owner...they day they buy it and the day they sell it. Now you see why...lol. I understand the decision to go gas, but honestly....these monsters have diesels for a reason. You use the resources you have though, clearly can put two gas engines in there way cheaper...it is what it is. Shouldn't bought this hunk of sh*t to start with ...lol.
These guys are out of their depth first send the engine to a Cummins ship get a cost for rebuild and get costing for replacement engines if you are going to do a good job the replacement engines need to be the Sam hp the boat was built to run with that hp go cheap go down
rubber is water impeller
Grab a couple Caterpillars that will get the jop done and at lower the cost of Texas speed.
Fuckin right
This will save you tons of money in converting from fuel to diesel
My recommendation go online find somebody that's doing a repower, and try to find something in diesel with low hours preferably inline 6 they create monster torque
There you go , look at all the years of experience to tell you not to go with gas engines , you got to go with Cummings or Volvo's or maybe a nice set of yanmars but you got to go diesel
Gas engines , not going to happen my friend. well good luck with that
Cut your losses , sell the engines for scrap and pay the landfill fees for the fibreglass hull. 30 years is end of life.
I would donate those two engines to a diesel School
I would go with big Cummins 6 cylinders 425 HP
Repower the boat with New engines they are more efficient
So water pump failure then, hone or resleeve the block fit new rings re-build. not mega bucks. very serviceable engine 2 million miles in a truck all day long.
Yeah nahhhh
Great content and great job!
🤣🤣🤣🤣 I just can't stop smiling and honestly laughing at all these comments ... way over 4000 ... the greater part is negative, almost trash talking Chris and his decision ... guys ... its his channel, his project, his time, his money and his decision which way he wants to go, so chill and enjoy the content and his journey, any way it goes ... thats why we all are here anyways ... right? 😉 ... youtube = entertainment = bis4build 😅 Keep it comming(s) Chris 🙈🤣🤣🤣🤣
Oh lord!!
Next episode wide body kit goes on the 30 year old yacht
I'd do gas also but I'd go 632 big blocks, carbed. Carbs are safe for boats with marine carbs /arrestors and all stainless lines. Fire hazard with carbs comes from non marine starters, alternators, ignitions that dont have proper spark sheilding. More marine parts available also for big blocks than LS platform. Good luck
Oscar the grouch is your new bitch huh? Lol... jk
A couple of points for the new engines. You will need to select a gear ratio that matches the prop shaft RPM with the old engines at max RPM to the new engines max RPM, or you will need new or repitched props. You also need water jacketed exhaust manifolds. Finally, most boats are designed so the exterior deck slopes aft so water will run out through transom drains. You will be saving so much weight,aft, with the gas engines, that the trim may actually have the decks sloped forward, which will flood the boat if it rains. You could check this by simulating the new engine weights, and floating the boat to see what the trim is. I agree with your comments about the poor maintenance access on the old engines. It's a common problem on yachts.
SMH
B.O.A.T. BUST OUT ANOTHER THOUSAND!
What about Tesla powered, however, with a fuel efficient motor (generator) to supply power instead of large battery packs? Massive torque and still a good energy density with diesel
this is such a toxic comment section, let this man do what he wants to do. if you have such a problem with it go build your own marine diesel engines jesus christ.
I sub’d to watch this shit show of a boat refit
Don't forget you have to have it surfaced and fire rings put it before you put it new sleeves.
Awesome thing about diesel. Sleeves. You can start brand new
Sea pump is trash
You need to rebuild it anyway. Move on
You will need to rebuild the 468's after about 1500 hours of runtime. The Diesels can go 5000-8000 hours of runtime before a rebuild if well maintained. The problems with the Cummins 903 was not the engines fault. It was poor maintenance. Your also killing the resale value of the boat.
No shortcuts with these engines,
Liner is probably cracked boys!
Don’t do 454🤨 I work for Cummins and you are making a mistake!
you can't make the boat go faster than what the haul is designed to go. The haul design is the governing factor of how much speed you get out of it, I'm not an engineer but I know the liquid mechanics plays an important role in speed over the water.
Why not try the LS? It will be aweome or it won't. Good luck and I cant wait to see it come together!
SMH
3 ls engines will be awesome
Bad sleeve orings that's all
DAVE, GO WITH DIESEL!!!!
Keep the diesel motors totally fixable !
Oil is coming from blow bye because of the bad piston rings and you can re-sleeve that motor there’s also an oil seal on the water pump that goes to the motor which probably was leaking you can rebuild that hope this helps you guys out The motor should have a hose on the side to ventilate the crank case that’s where the oil came out and went into the bilge
Water pump impeller fell apart
This will be fun to watch.
I am pretty sure the fuel tank has to get recoated to work with the gas conversion....but don't quote me on that
That sleeve was moving too when you pushed on that piston the sleeve is f'd
These guys are a joke. Let’s put in a gas engine because we don’t know what we’re doing. That engine overheated badly. It was obviously caused by the previously failed sea water pump impeller, clogging the heat exchanger. Sloppy maintenance. There’s a reason Diesel engines cost a lot of money. They make horsepower for many many hours. A little gas engine will be junk in only a few hours trying to push a big boat.
How did someone with so little mechanical aptitude develop such a huge following in this space? The mind boggles.
A wet liner diesel engine is fundamentally designed to be super easy to rebuild and incredibly reliable. From everything you've shown the diesels need a basic rebuild where complete kits are commonly available. Instead you're going to swap in some small gas power plants? You've got to be kidding. That boat will be a dog and never as reliable. It's a yacht, not a speed boat...
Buy a new motor will be cheaper mate
if you know what you doings.
I was just curious what 14 liter engine it was. I wasn't paying attention till you said LS swap... Then it got interesting. :) I'll just say this - T is for Turbo... :D
You will never get your money out of a boat, or should i say you tubes money !!
Rubber parts looks like pieces of impeller... oh I see now they are.
GUBER A 903 IS NOT A 14L. ENGINE
Lol, you said "investment" talking about your boat.
how much did you loose?