New 3.0 duramax

[SOCALCRICKETT]

Lol, been researching the new 3.0 duramax. Got kind of excited thinking about new tech on the 1/2 ton trucks till I saw this video. The oil pumps are belt driven and trans needs to be dropped to service them...




Well that secured my decision, I will keep my 2017 6.0 2500HD!!!

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[lbhsbz]

That looks like a fucking trainwreck. If GM carried forward any of the timing chain "technology" from their current DOHC V6 engines into this...they'll go to shit in short order...but wait, now...let's put 'em on the back of the engine so it's even more fucked to fix.

If you're gonna make a belt driven oil pump, drive it off the same belt as you use for the cams...and make it non-interference, so when the belt lunches, it stops running and doesn't need oil pressure anyway.

I'll keep buying gas for my pushrod motor.

 

[HB2Havasu]

A belt driven oil pump on the back of the engine? Sorry but that’s just fucking retarded. Where does GM find these engineers? On the Short Bus obviously, lol.

I was pretty stoked about getting a Duramax Tahoe next year until I read this thread

 

[copterzach]

Is that how the Dmax in the Canyon and Colorado is set up?


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[TPC]

Is that how the Dmax in the Canyon and Colorado is set up?


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The 3.6 LFX DMax variable speed oil pump is plagued with issues. Over pressure, leaks in addition to timing chain problems.

 

[lake p.a.l.]

I drove one the other day & its impressive. That video doesn't give me any warm fuzzy feelings......

 

[HCP3]

"The service on it is not that difficult... The transmission just needs to be backed off..."

Too funny. Just that simple.

 

[copterzach]

The 3.6 LFX DMax variable speed oil pump is plagued with issues. Over pressure, leaks in addition to timing chain problems.

I was thinking a Dmax Canyon would be cool to throw a little lift on and run around in....


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[SOCALCRICKETT]

I drove one the other day & its impressive. That video doesn't give me any warm fuzzy feelings......

I almost pulled the trigger on one yesterday. Drove bitchin, and great mpg. I just had that little voice in my head telling me to hold off, glad I held off after seeing this. I second thoughts after seeing the rear timing chain, but after the belt driven oil pump, Im out!

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[Carlson-jet]

I see none of you have actually worked in a factory. Decisions are not made objectively. Engineering is made up of a few departments that are in complete conflict at all times. There is no rational.

 

[JDKRXW]

Reminds me of the Northstar engines that had the starter under the intake manifold (between the V in the block).
BRILLIANT idea.

 

[TPC]

I was thinking a Dmax Canyon would be cool to throw a little lift on and run around in....


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We were interested too but dealers here won’t even stock them. Special order only and a Chevy service writer friend flagged us off the idea.

 

[pronstar]

Reminds me of the Northstar engines that had the starter under the intake manifold (between the V in the block).
BRILLIANT idea.

...or head gaskets that require engine removal.

Anything that came from the factory with a Northstar is worthless, and has been for some time.



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[pronstar]

Lol, been researching the new 3.0 duramax. Got kind of excited thinking about new tech on the 1/2 ton trucks till I saw this video. The oil pumps are belt driven and trans needs to be dropped to service them...




Well that secured my decision, I will keep my 2017 6.0 2500HD!!! View attachment 825954

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That sucks, I had high hopes...
The whole idea of an inline-6 is accessibility & ease of service.
What the hell were they thinking???

Looks like gasser V8s for me...a Fiat or Land Rover diesel scare me even more.

The “after warranty” costs for diesels also scares me...waaaay too many expensive things to break.


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[2Driver]

LOL you rarely ever let the engineer near a camera or an interview.

 

[YumaRivernaut]

I see none of you have actually worked in a factory. Decisions are not made objectively. Engineering is made up of a few departments that are in complete conflict at all times. There is no rational.

Yup.
All the nerd turd kids coming out of engineering school want to put their "stamp" or "claim to fame" on whatever it is being designed and constantly bicker over who is smarter than who. None if any I see have any real world experience and look down on Mechanics/Technicians as dumb, uneducated knuckle dragging grease monkeys, a stereotype that is perpetuated in this country by so called "intellectuals", politicians and the elitist media ad nauseam. No matter how user/repair unfriendly the design is, they're going to leave their mark on the product and defend it no matter how retarded it obviously is to everyone else.
Ever wonder why Japanese products for the most part are more user friendly and/or dependable?
Their engineers are required, fresh out of school, to spend a minimum of one year on the assembly line with the techs to experience the folly of arrogance and egotism manifested in the designs of products.
Planned obsolescence is another problem. The oil pump belt is case and point. Why would one design the timing assembly with chains that are supposedly never need maintenance and leave a belt in the system that needs to be changed out on or about 150,000 miles? Why not just run the pump with a chain as well?
Money. The dealerships will make a killing of the repairs that will keep coming back. They also do not want owners fixing their own products anymore, thereby making the procedures as difficult as possible by design.
It is really a concern, the disconnect between engineering/upper management and the people who know how the real world operates.
It's a cultural thing really.
I don't see it changing anytime soon.

 

[pronstar]

It’s almost as bad as the previous-Gen Ford trucks...”oh you need to remove the cab but its a simple procedure...”


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[boatpi]

You guys are the diesel experts I just took this photo of the front of my range rover diesel T

D6. It’s the same engine but with a slightly different supercharger used in the new F150. The tons of a torque monster, gets over 30 miles a gallon with AWD. maybe somebody can jump in with their comments about the design. It’s used throughout Europe but Ford uses their own 10 speed transmission made in USA with this engine.

I went through 10 pages on Google trying to find a bad word on this engine, nothing. It is rock solid.

 

[squeezer]

The rear drive stuff might not be as bad as it sounds. Taking a step back for a minute this engine, (And the same is true for almost all engines these days) Is not going to be serviced or repaired by a backyard mechanic all that often...Meaning that the vast majority of the time the work will be done by somebody with a lift. It is entirely possible that dropping “Sliding back” the tranny is easier than pulling all the front of the engine stuff off to get to a conventional front driven set up.

 

[Mandelon]

The Duramax in my Silverado was an Isuzu motor. I have a feeling that is why it was so good. Is this new one all Chevy designed?

 

[pronstar]

You guys are the diesel experts I just took this photo of the front of my range rover diesel T View attachment 826005 D6. It’s the same engine but with a slightly different supercharger used in the new F150. The tons of a torque monster, gets over 30 miles a gallon with AWD. maybe somebody can jump in with their comments about the design. It’s used throughout Europe but Ford uses their own 10 speed transmission made in USA with this engine.

I went through 10 pages on Google trying to find a bad word on this engine, nothing. It is rock solid.

This article says Ford redesigned the crank and crank bearings, implying it was an issue before they put it into an F150, but that’s all that comes up [emoji106]

https://www.motorreviewer.com/engine.php?engine_id=145

Everything else says the LR vehicles have electrical problems, not engine issues.


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[sintax]

...or head gaskets that require engine removal.

Anything that came from the factory with a Northstar is worthless, and has been for some time.



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haha no joke, I remember when my dads blew a head gasket due to a stripped out head bolt. He asked if I would help him r&r it, I asked which bank it was, thankfully it was the front. I would have just told him to get a new car. Still was a giant pain in the ass to remove and helicoil it, but it was not drop the engine bad.

 

[ElAzul]

 

[lbhsbz]

"The service on it is not that difficult... The transmission just needs to be backed off..."

Too funny. Just that simple.

To be fair, once you get past the "fuck, I've gotta pull the trans"....it's a handful of bellhousing bolts, 6 or so converter bolts, drivelines, a trans mount, and a few electrical plugs. Last time I did a truck trans I had it on the bench in about 40 minutes.

...but it's still fucking stupid

 

[JDKRXW]

[QUOTE="squeezer, post: 3555027, member: .Meaning that the vast majority of the time the work will be done by somebody with a lift. It is entirely possible that dropping “Sliding back” the tranny is easier than pulling all the front of the engine stuff off [/QUOTE]

Could be.......but that cut away engine model only had a sliver of the flywheel showing......and he very conveniently didn't say anything about having to either remove it, or work through the funky slots you could see in the sliver that was visible.

36,000 psi injection pressure and 10 possible pulses per stroke.......I won't be buying this engine until they've got a few years on the road.

 

[Trash]

You guys are the diesel experts I just took this photo of the front of my range rover diesel T View attachment 826005 D6. It’s the same engine but with a slightly different supercharger used in the new F150. The tons of a torque monster, gets over 30 miles a gallon with AWD. maybe somebody can jump in with their comments about the design. It’s used throughout Europe but Ford uses their own 10 speed transmission made in USA with this engine.

I went through 10 pages on Google trying to find a bad word on this engine, nothing. It is rock solid.

They are too new, not enough miles, nor enough data to make any claims as to the reliability.

 

[Bigbore500r]

Reminds me of the Northstar engines that had the starter under the intake manifold (between the V in the block).
BRILLIANT idea.

Same with Toyota Tundra V8.......

 

[Bigbore500r]

It's like there was a watercooler contest to see how much shit they could cram into the back of the engine. Why? Jesus

 

[pronstar]

Same with Toyota Tundra V8.......

A big difference:
One of those engines is in a car with zero resale value.

The other is in a truck with industry-leading resale value.


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[SHOCKtheMONKEY]

Same with Toyota Tundra V8.......

Previous gen...

 

[rush1]

This engine looks like it's based off of the old 4 cylinder Isuzu engine used in the npr trucks that was junk

 

[4Waters]

This engine looks like it's based off of the old 4 cylinder Isuzu engine used in the npr trucks that was junk

It's made by the same company

 

[Bowtiepower00]

I beat the shit outta some NPRS and never had an issue with the engine when properly maintained.

 

[rush1]

I beat the shit outta some NPRS and never had an issue with the engine when properly maintained.

We had a fleet of bread trucks with that engine and it was a disaster, they ate injection pumps and blew up all of the time and they were serviced religiously.Now the npr's that had vortecs in them were no problem

 

[77charger]

To be fair, once you get past the "fuck, I've gotta pull the trans"....it's a handful of bellhousing bolts, 6 or so converter bolts, drivelines, a trans mount, and a few electrical plugs. Last time I did a truck trans I had it on the bench in about 40 minutes.

...but it's still fucking stupid

I had to pull my t case out of my 2500hd i looked up the procedure and went to work think i had it out in about an hour or a little more.Although i spent rest day making a run to get better snap ring expanders and taking apart the case and doing the pump rub fix.But if i were to do it again it would probably be a 4-5 hour job total.Before i started i had to make a short 15mm wrench too so i could get the top bolts off.I recently cleaned the injectors fuel rails come off in about 10 minutes per side.

 

[rush1]

I had to pull my t case out of my 2500hd i looked up the procedure and went to work think i had it out in about an hour or a little more.Although i spent rest day making a run to get better snap ring expanders and taking apart the case and doing the pump rub fix.But if i were to do it again it would probably be a 4-5 hour job total.Before i started i had to make a short 15mm wrench too so i could get the top bolts off.I recently cleaned the injectors fuel rails come off in about 10 minutes per side.

Does the transfer case in the half ton do the same thing?

 

[Mandelon]

If this job takes a 10 MM socket, I'm fucked.

 

[Bowtiepower00]

We had a fleet of bread trucks with that engine and it was a disaster, they ate injection pumps and blew up all of the time and they were serviced religiously.Now the npr's that had vortecs in them were no problem

FWIW, I’m referring to the early 3.9 NPRS, they were bulletproof for my use in the construction industry. I have no experience with the newer rigs. This was before the gas engine option. Early to late 90’s rigs.

 

[77charger]

Does the transfer case in the half ton do the same thing?

Believe so it was a certain model t case in the 2000-2006 trucks

 

[DuttonDave]

I can’t wait to get a 1500 GMC Denali with that Motor... I drove one we had on the lot, and loved the power and and the mileage (30 mpg hwy). I have one coming as my company car I’m currently have a 1500 with 6.2 v8 10 spd trans. and it runs fantastic.

 

[Flying_Lavey]

It's made by the same company

No it's not. No Izusu with this 3.0

This engine looks like it's based off of the old 4 cylinder Isuzu engine used in the npr trucks that was junk

I beat the shit outta some NPRS and never had an issue with the engine when properly maintained.

This is a completely new engine designed by GM. Not Isuzu.


FWIW...... If you haven't noticed over the past 15 years or so, engines have been moving further and further into the firewall of trucks. I've have been told by many that it is for crash safety. It creates a crumple zone in front of the engine so energy can be dissipated prior to impacting the engine and pushing into the driver's lap. Not sure if that's the reasoning here for the rear mounted shit, but..... It could be part of it.

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[D19]

The Duramax in my Silverado was an Isuzu motor. I have a feeling that is why it was so good. Is this new one all Chevy designed?

Duramax is a joint venture between Izusu (40%) and GM (60%). Before Duramax, it was Detroit Diesels engines being used and they were junk compared to Powerstorke and Cummins.

 

[rush1]

Duramax is a joint venture between Izusu (40%) and GM (60%). Before Duramax, it was Detroit Diesels engines being used and they were junk compared to Powerstorke and Cummins.

What Detroit diesel? The 6.2 and then the 6.5 were never really a Detroit diesel, a Detroit is a 2 stroke as in an 8v71 and such or its a series 60 or series 50.
Now I've worked on a million 6.2 and 6.5 and yes the standyn injection pumps sucked balls , but it wsnt that bad of an engine unless you compared it to a Cummins lol

 

[rush1]

I really really want to like this new diesel because I love Tahoes/ Suburbans I just hope it's not junk

 

[rmarion]

Decisions are not made objectively. Engineering is made up of a few departments that are in complete conflict at all times. There is no rational.

sounds like our Government

 

[pronstar]

What Detroit diesel? The 6.2 and then the 6.5 were never really a Detroit diesel, a Detroit is a 2 stroke as in an 8v71 and such or its a series 60 or series 50.
Now I've worked on a million 6.2 and 6.5 and yes the standyn injection pumps sucked balls , but it wsnt that bad of an engine unless you compared it to a Cummins lol

GM loosely marketed the 6.2 and 6.5 as Detroit Diesels IIRC...but technically GM manufactured them.


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