FULL REBUILD on a Duramax that MELTED a Piston!

On today's episode of crazy finds at Dave's Auto, we have an LBZ Duramax that completely melted a piston! Come along with us as we tear this thing down, and do a freakin' sweet rebuild for this customer.
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[@Ronzer]

I've only worked on my own gasoline engines but Dave and the boys seem like they are upper echelon mechanics. I know nothing about diesel engines and I watch each of these videos completely enthralled. They explain things so well and this video was like mechanic ASMR during the build with music portion. I love this channel. Great work fellas

[@dang6234]

I honestly don't care a whole lot about diesel engines, but Dave has the amazing ability of making me want to watch every single video! Great channel!

[@shawnfinerty7345]

So true

[@Jimmyky77]

Me too, I've never owned a diesel vehicle but I enjoy the videos 👍🏻

[@EvzenKovar-i5p]

I know they’re there to earn a living foremost, but man you can tell they have so much pride in their work. It’s so great they share it with all of us.

[@textman09]

I’m a simple man. I see a notification for a new upload for Dave’s Garage I tap and enjoy

[@EvzenKovar-i5p]

This

[@bretheckenberger6044]

Amen

[@djosbun]

Perfectly said.

[@mmmontague9048]

Couldn't agree more

[@lothar52]

Amen!

[@coryreedy2752]

I’m not a mechanic, but I can sit here all day and watch these videos.

[@flaberdoopin]

I love your videos… they are so fun to watch and you teach all us so much

[@snowgorilla9789]

Glad to see youth that gets dirty hands and CARES about the job they do. Hard to find.

[@oceanmariner]

Dave's engines are much better built than any new engine from the OEMs. They don't do many of the assembly checks Dave's crew is doing. His rebuilding is more like a high end race shop. That's got to translate into more reliability.

[@trekfortruth2841]

I have never, nor will i ever build an engine. But i find your videos like this intriguing and very relaxing...something zen like watching highly skilled craftsmen in their flow.

[@bulletbuddy5153]

If I were a much younger mechanic I’d be doing everything I could to be aloud to work in you shop, the quality of the work you guys do and the professionalism there is incredible and mostly a thing of the past, when you talk to your customers you give them honesty and the integrity of your entire shop, keep up the great work and keep sharing it with us all.

[@blackbuttecruizr]

Love this channel and the excellent work y'all do!

[@donniev8181]

You can tell that Joey also takes after his dad with his attention to detail. While talking, Dave touches Joey's freshly rebuilt engine with the tip of his finger, leaving a tiny grease spot. At 16:11, Joey then notices said grease spot and immediately grabs the nearest shop rag & wipes the engine clean, lol. Great stuff

[@stevesmith8155]

Dave and Guys: these are great to watch. Melted piston is hideous, but far less cost than a gas turbine (jet engine) with a failed and melted high pressure compressor (literally mega bucks to repair). My old saying: "I love hard work, I could watch it all day long". However, I earned my retirement the old fashioned way, worked my butt off. Keep it up guys, enjoy your day!

[@MrRebar15]

*Dave's Auto Center* Bravo well done, thank-you gentlemen for taking the time to bring us along. GOD Bless.

[@davidnewton6441]

Very educational I have a Duramax 2002.

[@davidcorbit3931]

Dave..your shop is dialed in. Very nice equipment.... and clean

[@drb996]

One could only wish to find a shop as honest and reliable as this ❤

[@Bigtuna-jh9uq]

Watching that Duramax being rebuild was sublime!

[@russellvoth5161]

Great video on that melted rebuild Duramax , got love those air piston they will really help. Amazing how that piston fused to the block !

[@jiggidyjam]

Dude has way more faith in that winch than I ever would.

[@danielgentry6759]

Good to see Joey out there getting it done

[@machine7767]

I was hoping to see the block bored 0.030 over and reused, but with it also being cracked, that wasn't possible. You should look an electric drill up to the engine stand for rotating the block.

[@tysonmaggard234]

Awesome work 👍

[@HoustonRoad]

Craftsman! Efficient and precise.

[@lawman5511]

I bet Dave’s auto is a really fun place to work. The techs have the tools, the equipment location and support to turn out a really quality product. Reminds me of a factory authorized Rolex repair station, only with heavier stuff.

[@jakeblizzard6019]

This guys putting some serious bucks in this engine build with upgrades as well

[@scottbyrd2157]

Top Notch professional motor services! Very professional and organized! I wished I could get my 5.3 Chevy motor with 308k on it overhauled by you guys. Don’t think it would make the trip that far.😂

[@garywinkel1831]

Very cool, Dave. You guys do great work.

[@Jimmyky77]

I've never owned a diesel vehicle but , , , I enjoy watching the videos 👍🏻

[@cycleguy666]

Why did it only melt one piston if the turbo is pouring in oil. All pistons should have been burning oil like crazy!!

[@williamrosier5558]

Other channels uses have open doors without. Blowing. Thank you for being Xtra Clean

[@jayha7071]

I used to think dentists and mechanics were the bigger crooks out there. After watching this channel its nice to see theres still some good ones

[@riccocool]

It's the dealerships that are the problem

[@amoni1959]

Speed of Air. I like it. 😊

[@smacdiesel]

Amazing!

[@piperdoug428]

yup my 6.0 blew its turbo seal but caught it, also a Ford industrial back hoe did a runaway on me, saved it by stuffing the intake, stuck governor

[@kevinmeske9890]

So cool. I'd love to know how to do all that stuff, wow. Great job!

[@rogerfenton5210]

a bit unusual to see bolts fixing lifting chains to head , heath and safety ,but still like the out come

[@MrAlpineAssassin]

I'm curious what compound he was putting on the friction surface between the head bolt nuts and where they meet the head surface? I was always told to not put any anti-seize or similar on friction surfaces because it can throw off an applied torque. Have I been misinformed? Thanks for all your videos by the way, love watching them. Nice place you have out there!

[@markredf150]

Love these videos. I love the music even more, just wish I knew the song titles🤷🏻‍♂️

[@Hansle420]

Ty.

[@jameszeiger8533]

@davesautocentercenterville, you said EGTs more than 1350 were damaging. I assume that is a value for a diesel application? For gas motors, i believe the range required by the catalytic converter to function best is ~1300 to a tops of 1600. With that, above 1650 is quite damaging from what I have read. Any thoughts on this?

[@rd4660]

Awesome!!!

[@andrew7202]

God I love a good solid build, not a rebuild guy to any degree honestly stay away from it lol but mad respect to the guys that do it. Rebuilt my share of motors over the years mostly small engine water craft engines and I hated every second of it😂😂 they ran and chugged a long till they got sold to some out of town guy. I don’t mind redoing heads, but anything engine related tare downs and rebuilds make me cringe in pain😂respect to you guys going above and beyond anyone who needs and wants engine work I tell them you’re the guys. If I ever need engine work done I’m sending my stuff out to you

[@angelocardoc]

What percentage of Duramax's, Cummins' and Powerstrokes have major engine failures because of tunes? And how many have failures because of poor maintenance?

[@timratiobackspread9486]

Dave, are you okay with the guy working under a suspended load like that near the beginning of the video?

[@kiprose2921]

I don't know much about diesel engines. However I am in the market for a new truck with a diesel engine due to the fact I pull heavy weight trailers on a daily basis. I would truly like to know your advice, what would you purchase ? 2024 f250, or 2024 gmc 2500. Powerstroke or duramax ? Those are the trucks I am considering.

[@tdotw77]

5:50 I love how on todays melted duranax piston video, the piston damage wasn't done by the "leaking turbo seals" but what we know is the actual problem of the broken\damaged injector over spraying fuel into the hole and burning it up! Dave I don't doubt much of anything you say cause you know what you're doing well and have many decades of experience. But that previous video on this engine stated this melted piston damage was done by a turbo that had blown its seal and was sending oil into the engine causing this damage, which isn't the case. If that was the cause it would be all 8 pistons that got hot and damaged, not just one. The only thing that causes one cylinder to get too hot is too much fuel being dumped into it from bad injector like I said last video. I love to see you building the engine using @SOA dimpled pistons & I'm sure gapless @TotalSeal rings too. I wish we could see a side by side dyno, etc comparison between this and a regularly buit version? Anyways keep up the good work we'll be here waiting & warching!👌🏻👍🏻🛠️🔧🔩🛢️🦺 ✊🏻🇺🇸🦅🇺🇸✊🏻

[@sw5334]

You installed the Speed of Air pistons, did you also use the True Seal gapless rings?

[@gregpaszt4671]

Curoius how those dimpled pistons run bring down egt lot of hype like to see science and data.

[@lakestl5000]

I like how he finally puts gloves on after pulling the crank lol, damage is done to those hands for the day

[@tdotw77]

🤦🏻‍♂️🤡😂

[@donmckenzie5027]

Man I enjoyed that!

[@theglitch99]

17:54 Beastie boys beat.... Brass monkeys i think...?

[@RobertYonng]

My 440 dodge ram titanium retainers, keepers, and pads.

[@korn111685]

Excellent work from Dave’s auto. Speed of air pistons are snake oil I believe.

[@Summitclym]

Quality work can be hard to find. This customer is getting a great motor.

[@dudeman8323]

What are the comp test readings per cyl? Couldn't really make out the gauge but it looked like just over 200? Mine (LLY) hits 410psi with the starter.

[@keithmceuen8775]

I’d like to see a real test on speed of air pistons with all things equal but the dimples so same coatings not just stock vs speed of air

[@freedomfighter5095]

Hey Dave can I drop of a northstar for the “monster treatment? I will drive it out from Indiana. My daily is a ‘97 Aurora and I want to make sure it runs another 2 decades or so. I am a GM tech but would much rather pay the pros for the heavy engine rework.

[@textman09]

@@freedomfighter5095 I’d watch a video on this 🍿

[@S_Paoli]

does Dave's Auto work on BMW engines? specifically the 4-cylinder engine of recent BMW 330i.... Thanks!

[@jayadams8859]

I’m a little hesitant to buy one of their engines because of the warranty. Don’t get me wrong I see they’re well built but I also like peace of mind.

[@davidclemdis4796]

It’s simply cannot get any more professional than Dave’s auto center, For engine rebuilding ; i’ve never seen any shop that does the quality work like that that does rebuilds in a shop with standards like that.

[@will.o7002]

Dave, how does that long gauge work that he's using 7:32 ?

[@CraftySasquatch]

Teach your mechanics to use proper PPE. Gloves and safety glasses manditory. OSHA required type stuff.

[@humanresources2138]

I want to see the Audi S5 rebuild.

[@sounboy4498]

Nice!!!

[@keithmceuen8775]

How does a bad turbo only effect one cylinder

[@JamesHolland-mo7ct]

Dave - Love the channel and content, BUT having an employee under a suspended load?? No PPE worn by the employee?? Yikes!!! Room to improve IMO. Safety first...

[@robertgilmore9665]

how much does a job like that cost ? i have a l5p i would very much like to have gone through and also do you guys tune and delete diesel's

[@Latuya-y1n]

At two 3 gallons per second 😂

[@vicyoung6102]

I mean the fun part about a teardown is the teardown

[@opinionshurt2905]

I love what you do and I really enjoy this channel, but in my opinion, these young bucks in the teardown bay really need to be wearing safety glasses. You get one set of eyes in life, and yeah, even Snap-On sockets can explode.

[@Codfanatic15]

If only I had the coin to bring my duramax down for some diagnostic work. She’s got a rather unique noise on startup and while idling at temp.

[@seanmccurdy80]

The bigger question is do you have the coin to ignore a small issue that could lead to a big failure?

[@chrissnoett3060]

The Duramax doesn't get a fire ring?

[@themightywookie351c3]

Status on Lamborghini?

[@jamesdills6720]

We would love to contact you guys about our metallurgical and mechanical processes that make most of these weear and tear parts last much loinger,.. Whats the best way to contact the correct person?

[@josh33025]

You got all kinds of expensive gadgets.

[@petershulick5270]

About we just put in steel pistons instead of aluminum? And use friction modifier and oil to prevent a lot of warn. Metal in the oil from the pistons, rings and other parts of the engine? If you wanna know of the 95% reduction infriction. Product I'm referring to just send me a message. I've been using it in both my vehicles and it's been proven. I'll resume on the scales. Clinically and scientifically! In fact, project farm has tested it and said it's the only one that actually does what it says it will do performance wise

[@gulfy09]

What is it

[@logancarter2134]

Great video, would be better without the music.

[@jltcasper3]

Better put some dynamite injectors in no way would i use the originals not worth it for this much work even if they tested good

[@garnetredslt]

Uber sketchy hoisting a heavy diesel engine with those oil soaked slings and getting under it to remove the oil pan. I know a few people who were in a hurry just git at er and ended up crushed under a load. Doing things safely doesn't take much more time and it's worth it when you don't have to sit in a court room and explain how an employee died on the job.

[@omardevonlittle3817]

boys need to find some gloves... wont make it to 70

[@duancoviero9759]

Them youngsters need to put some gloves on 🧐

[@Tazinian]

Seems like you guys always get Duramax engines that are destroyed and sludged to death. Are you guys Duramax specialist is it just so happen the most cars that get destroyed are Duramax?

[@garymckinziejr7194]

Why don’t your guys wear gloves?

[@juliosantiago4915]

Love your videos but duramax are junk specially if you don’t take care of them, I own a ford super duty I change the oil every 5k and do a service the the 4x4, brakes coolant every 2 years my dealer said you are waisting your money I told the I dont care money well spend she will last for a long time 😂 please keep giving advice so we don’t fall to the manufacturer shity advice, great channel!!!

[@techs1smh13]

You're opinion. But ford is still as always #1 in recalls

[@johncrowley5612]

Go and tell Gale Banks that Duramax are junk and see how you go.

[@PurpleLEANKrabs]

Rebuilding garbage,just use a better motor that dont melt😁😁😁

[@VineV-Dutch]

3:50 young employee should be wearing gloves! Oils penetrate in his skin. Employer is responsible for that and must point it out as employee safety. Dave: you messed this one up as end responsible guy. Shop manager is also in the wrong.

[@francisschweitzer8431]

6:21 …Sprays on some foaming cutting oil and then vacuums it off before the cutter ever touches and makes a chip…. DAVE… are you seeing this???

[@Latuya-y1n]

Stage 3 oil system from oil pan helps at 5000 hp two I'll keep secret though hp wins two but it gets u out of there power temperature 🌡️🤒 sodium chloride boiling point 2669 degrees 🤔

[@VineV-Dutch]

9:00 ashame the nice package is on environmental unfriendly foam. Other: will packed and presented

[@Chupamiculo]

5:00 every diesel owner should know

[@EmilyAnderson-z5y]

Who else is excited about this content? Let's create a fan community!‍❤️❤️❤️‍ ! 🏚,