4cyl Silverado?

Sierra Dan · May 22, 2018

What about Reliability in all of these turbo charged engines?

Mechanical maintenance/cost as miles go up?

jono20 · May 22, 2018

5 hours ago, Sierra Dan said:

What about Reliability in all of these turbo charged engines?

Mechanical maintenance/cost as miles go up?

Fair point, but I have the exact same concerns for the direct-injected cylinder deactivation V8s most of us are driving around now.

KARNUT · May 23, 2018

Part of me hopes the engine does end up being successful. Sadly we live in a day and age now where the manufacturers must take drastic steps to improve the fuel economy on everything they sell in order to meet government mandates. There is only so much fuel economy one can squeeze out of a high HP V8 engine. I want GM to be successful, same with Ford and Dodge. But that means making dependable vehicles with top of the line reliability. If they provide that, then people will tend to speak highly about a brand and the name won't be tarnished. It is how Crapota and Honda built their reputation of being the best vehicles out there. It is how the Crapota Tundra is building the reputation of being the best 1/2 ton truck out there.

I love how you mention a vehicle good reliability and call it Crapota. I’ve owned a few Toyota’s and they were perfect. I’ve owned over 100 vehicles of all brands and very few left me stranded. My biggest disappointment was the 5.7 diesel that we had (4) that GM put out. When it comes to new GM products I have a wait and see approach.. I’ve owned more GMs than anything else. Right now I have a 92 Chevy, 01 Acura, 06 Elantra, 11 Genesis, 17 Camry. All are great vehicles.

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Rock1500 · May 23, 2018

I love how you mention a vehicle good reliability and call it Crapota. I’ve owned a few Toyota’s and they were perfect. I’ve owned over 100 vehicles of all brands and very few left me stranded. My biggest disappointment was the 5.7 diesel that we had (4) that GM put out. When it comes to new GM products I have a wait and see approach.. I’ve owned more GMs than anything else. Right now I have a 92 Chevy, 01 Acura, 06 Elantra, 11 Genesis, 17 Camry. All are great vehicles.

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I agree with an engine like this, wait and see if the best way to go unless you lease.

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O_J_Simpson · May 23, 2018

8 hours ago, Sierra Dan said:

What about Reliability in all of these turbo charged engines?

Mechanical maintenance/cost as miles go up?

Turbos are proven performers over the years. You take care of them and they will last forever. Now if they have cylinder deactivation all bets are off.

j-ten-ner · May 23, 2018

30 minutes ago, O_J_Simpson said:

...Now if they have cylinder deactivation all bets are off....

"dual volute turbocharger"

I would imagine that the design of the turbo can handle this.

Go to 2:20.

jono20 · May 23, 2018

Turbo 4-cylinder I could handle.

Turbo 4-cylinder with direct injection would leave me worried.

Turbo 4-cylinder with direct injection and cylinder deactivation? I don't think I could justify buying into that nightmare.

Andy King · May 24, 2018

On 5/21/2018 at 2:02 PM, AlljackedupZ71 said:

May be fast... but it will never sound right in a full size truck. lol.....

Maybe they will have the sound of a 6.2 play on the speakers when you stomp on it.

Sierra Dan · May 24, 2018

Neighbor just traded his 2016 Ford Raptor SVT 3.5 Turbo truck for a 2018 6.2 Denali.

Turbos were acting up and misfire issue with engine. Apparently he was told by Ford Dealer that this was a common issue at higher mileage ( 58,000 )

Est. $4300 to replace/repair

This is why I questioned Turbo reliability above. Cheap way to produce power, but at what cost for repairs down the road?

Donstar · May 24, 2018

On 5/21/2018 at 2:03 PM, Colossus said:

Part of me hopes the engine does end up being successful. Sadly we live in a day and age now where the manufacturers must take drastic steps to improve the fuel economy on everything they sell in order to meet government mandates.

I also hope and expect these new engines will be successful. I have no reason to believe they won't as I have witnessed several decades of "new and improved" engines being produced. At one time a 100k mile lifespan of an engine was deemed spectacular and now it's less than a minimal expectation! I have felt automobile manufacturers have always been behind on their ability to improve fuel efficiency. I don't believe government regulations are putting technical challenges on manufacturers but an argument can be made for a potential financial strain.

I recall in the 90's, Volkswagen's were being produced with inline 4 cyl engines producing horsepower ratings that exceeded my '80's full sized extended cab pickups. I'm sure manufacturers could have produced a full sized truck with a 4 cyl motor decades ago but the mindset that we need 8 cylinder pickups needed some political incentive to overcome. We all benefit from better fuel efficiency. The fact that manufacturers can deliver this without sacrificing power is truly a bonus!

HondaHawkGT · June 20, 2018

On 5/19/2018 at 10:24 AM, Trucko20 said:

So is this essentially the same thing Ford is doing with their Ecoboost, but in a 4-cylinder? Or are there more significant differences?

This engine will have variable valve lift which Ford has not done yet I believe. Plus cylinder deactivation and dual volute turbo.

HondaHawkGT · June 20, 2018

On 5/22/2018 at 10:08 PM, jono20 said:

Turbo 4-cylinder I could handle.

Turbo 4-cylinder with direct injection would leave me worried.

Turbo 4-cylinder with direct injection and cylinder deactivation? I don't think I could justify buying into that nightmare.

Depends on how the PCV system is designed. A well designed catch can system can make a huge difference in carbon buildup too. The cylinder deactivation is different compared to other designs. As long as there's a way to disable it, shouldn't be a problem. The good think is that there's no collapsible lifters required in this style of AFM. The cam lobes shift sideways like an Audi Valvelift cam.

fondupot · June 21, 2018

i don't believe there is "no" turbo lag. No matter how hard you engineer that thing, there is gonna be turbo lag.

ExFordGuy77 · June 21, 2018

My concern with this engine is the crazy electronic cooling system. Electric rotary valve and electric water pump... not too crazy with that idea. I am curious how it'll perform though.

Nanotech Environmental · June 22, 2018

10 hours ago, fondupot said:

i don't believe there is "no" turbo lag. No matter how hard you engineer that thing, there is gonna be turbo lag.

Looking at the dyno chart, I'd say no lag. Peak torque at 1500 rpm & the flattest torque curve I've ever seen.
None of the early test reports that I've seen have mentioned any lag..........

With that torque curve, this thing could be geared the same way as my current truck and should get pretty exceptional hwy mileage & still pull better than my old 2006 fullsize. Currently, I have a 2017 w/3.42 and the 6 speed.