Go with the commons 12 valve Duramax is a Korean design motor

Could be avoided but nobody has money to avoid stuff like that

Thats crankcase ventilation.........the tube fell off 😂😂😂😂

ALL THESE ENGINE'S CATASTROPHIC PROBLEMS CAN BE AVOIDABLE.ALL MANUFACTURE'S need to build better car's and truck's. They have no pride or quality control. And ok since you say, it's a common problem , it's ok ,no vehicle, and that needs an engine, and a ton to fix. Í see so much damage on alot of newer engines ,. YOU SHOULDN'T HAVE TO BUY the new and improved parts from the dealers and pay to have them installed. So your pretty much saying all this engine damage could have could have been prevented or avoided. I didn't know you had to take apart new engines, for preventive maintenance. BS. I watch Dave's, and the trash that comes through his shop, and he has to make part's, that should have been done to these engines in the first place. Like the key ways he makes on cranks, and valve seat's falling out of the head. The dealer should be responsible for all this damage. I STILL DON'T GET HOW THIS COULD HAVE BEEN EASILY AVOIDED.TELL ME HOW, HOW.IM SURE THE GUY DIDN'T KEEP DRIVING IT AROUND.

One time I farted so hard I had to pull over and check under the hood and I saw something like that

Connecting rod broke off the wrist pin on the piston

It done blew up!!!😂

The valve seat had to drop due to a valve issue…?!

I would not trust those pins. That's a joke Round key ways.

Ive seen worse welded or brazed and went on to live for many many more hours. Not sure about the compacted iron blocks.

Just buy a Ford and you won't have to worry about this.

I've heard this is what happens when you let it idle for too long.

As a Ford owner with a 6L Powerstroke, I assume there are similar preventable catastrophic failures. But by preventable, you're saying that a major engine teardown is necessary. Not very many of us can afford to do that at will. We hope that our trucks just keep running for as long as possible, because just regular maintenance is expensive enough and at least with me, replacement is just out of the question. I have no doubt that you do great work but I doubt I could afford it. Edit: I should clarify, that I can financially afford to deal with some kind of catastrophic failure of a piece of my equipment. But just because I have that money in the bank doesn't mean I can afford to use it for that purpose. Maybe with that Cummins block there is an expected failure. And if it happens prematurely it should be the manufacturers responsibility to repair it or replace it. But unless I know something's coming, I can't just go tear down my engine to prevent a failure that may not even happen. When this F-350 dies, I'm switching to a 6.2 gas job.

Why hasn't GM been sued over that? Seems like a design issue.

Wait till you find out the crank on a duramax actually breaks in half 😂

Thanks Dave :)

Honestly I don’t think it’s that much of a big deal 😂😂😂😂

Ah yes, the curious case of the Cummins that came.

Disconnecting Rod

Its a CGI block what do you expect??

The piston got out to buy milk 😊

Cgi blocks, theyve announced going back to cast iron for 25

You don’t use 19+ blocks but it’s still a core?

don't make sense it's not done in the factory!

You could’ve just said one has PMR rods and one has forged rods. I’ve got a PMR 7.3 at 608k miles, I think they’re just fine. It’s the person who owns it that decides how long it’s going to last

Women in charge of checking oil level. 😹

I would not have the issue in the first place. Being a mechanic since '94, I always believed in eliminating the root cause of repeat problems. By the way, I have a key and keyway on the output shaft of my Norton engine which drives a 3 row sprocket which drives the transmission. No location is required but rotation would cause permanent damage. It's a DRIVE !

Lifter failure, needles in oil?

These engines must be the biggest peices of crap of all time. All you see are people showing what a complete lack of designed engine

VERY GOOD ENGINE

V8 DIESEL ARE JUNK CAT CUMMINS FORD INLINE 6 DIESEL ONLY ONLY MERC AND DUTZ MAKE A GOOD V8; DIESEL 😅😅

a "key way" is the ONLY way!!

How much wider bigger is the ring gap on #7 and 8 to accommodate the explanation due to the extreme heat generated in regen. mod. Wouldn't that also allow more fuel in compression stroke in to the crank and the oil deluting the oil even more.

Don't they use shear pins for a reason? If the pins don't break then the shaft will.. which would you rather replace?

Dave’s auto has been doing this

Your ripping of DavesOnline.🖕🇺🇸

I’ve been using key ways for over 100 years worked perfectly fine and some smart ass said let’s put a little pin there and save a penny

I wouldn’t trust the Isuzu engine.

My friend has diesel nope

If the balancer is torqued correctly, the pins are moot. The problem is, there is an incorrect torque spec floating on the internet of 275 lb ft, I've even seen it in Mitchell ProDemand. The correct spec is a base torque plus an angle, which, when coupled with a new balancer bolt, ends up well over 400 lb ft. If the balancer bolt isn't torqued correctly, it will sheer the pin. The thing is, if caught early, all you need is a new pin and correct torque. I guarantee your key would shear if the balancer was loose, except it would take the balancer and crank with it. Pins and keys are locators. They are not intended to stop rotation. 25 years of the Duramax engine can't be wrong. Any time I've seen one sheared, it had a new water pump. Now, if you're building a race engine, maybe, but I'm still not convinced this is needed. I think it's more a solution looking for a problem.

Bro is NOT daves engine repair

2002 7.3 Powerstroke 600k miles and counting

Or just buy a Toyota!!

“GM engineers watch this video then keep on purposely making crap”

The only way to install these is engine tear down .If it needs rebuilding hell yes this is good...If your duramax is running fine the yes you trust the factory pins

Yes I'd get it machine d

You have remove the crank to do this,😂

Mine has over 500k if it goes at this point I would just as well get a new truck

I wonder how this compares to Archoil AR9100

American and foreign vehicles are made to last just long enough! Dealers, and repair shops make bank off what vehicle manufactures Assemble to be short lived!!!