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  #25  
Old 09-08-2016, 10:32 AM
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Re: The end of V8 Hemi in 2019?

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Originally Posted by Sweed View Post
I disagree, the V6 is way too weak for me, for me it wasn't even a choice!
The twin turbocharged is quite a powerplant.

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  #26  
Old 09-08-2016, 10:57 AM
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Re: The end of V8 Hemi in 2019?

One area where you will see better development in turbo longevity, is some type of electric oil pump, that will keep the turbo bearings supplied with oil during spool down when the engine is shutdown. Right now with most turbo engines, much like their non turbo cousins, when the engine stops, so does the oil pressure.

The most common failure of automotive turbo's is due to hot shutdown. This occurs when the vehicle has been running at a constant speed for a period of time, and the vehicle is shut off before the turbo has had time to slow down, or cool down. A turbo can spin at speeds exceeding 150,000 rpm, (Mercedes advertises 250,000 RPM on the turbo equipped CLA 250, 4 cylinder). The faster the vehicle goes or the harder it works, the faster the turbo will spin.

If a vehicle is shutoff suddenly, the turbo will continue to spin without oil. Each time this occurs, the life of the turbo is shortened because of wear occurring from little or no lubrication. Eventually there will be enough wear to allow one of the wheels on the turbo to contact its housing. This causes the wheel to be out of balance. This causes even more contact, and the turbo is usually destroyed. Allowing the vehicle to idle for a few minutes after its been running hard, or allowing the exhaust temperature to cool to below 500 degrees will greatly reduce the risk of premature turbo failure.

If they can keep oil flowing to the turbo after shut down, this will greatly enhance the life of the turbo. And let's face it, people are not going to go through a long, time consuming shutdown procedure every time they shut off their engine. Providing ample oil pressure after shutdown will keep these things from failing.
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Old 09-08-2016, 11:02 AM
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Re: The end of V8 Hemi in 2019?

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Originally Posted by billt View Post
You cannot get unlimited mileage and time warranties with turbo's, like you can with the 5.7 HEMI.
This is probably the reason Chrysler wants to get rid to the HEMI and move to TT V6 (its a money loser), besides for fuel efficiency reasons, except everyone here has explained why V8 is more reliable than turbocharging (in general). I do agree, they will have to make turbo more reliable to win people over.
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  #28  
Old 09-08-2016, 11:08 AM
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Re: The end of V8 Hemi in 2019?

i agree you want to build your bigger cubic inches the small v6 is okay can,supercharge the heck out of them or turbo but you still have a small displacement , trailer towing fully loaded the bigger block is better.
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  #29  
Old 09-08-2016, 01:12 PM
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Re: The end of V8 Hemi in 2019?

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Originally Posted by Al_Menard View Post
It is funny how if you look at the Japanese cars etc. it it has a 300+HP V 6 people think high performance. But if it a US brand and has a V6 it is mediocre. US brands have a hard time selling the V6 as any kind of performance engine. I think Ford is trying to break that with the Eco boost label. I tow a 6000lb boat and trailer so I want the V8 or the diesel for the torque. I know someday a v6 will have it.
There are all sorts of V6's. e.g. Ferrari, Jaguar, at one end of the spectrum and the old wheezy GM v6 at the other.

Kind of a game being played to meet an official testing method, as it really don't matter a lot whether it is a turbo-whatever vs a non-turbo-bigger once you use the power the gas mileage runs in a reasonably narrow band until someone invents new physics.
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Old 09-08-2016, 01:20 PM
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Re: The end of V8 Hemi in 2019?

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Originally Posted by Shockwave View Post
Wet curious about this twin turbo engine as well . As someone who loves v8's I can't justify it in a suv anymore. Wouldn't a 3.0 or 3.6 liter twin turbo have more horsepower and torque than a 5.7 hemi?

Auidi has a 3.0 liter I believe that is supercharged and I think it gets like 450-550hp?
With multiple turbos or variable vanes, you can come pretty close to the torque/hp curve of a larger V8. Automatic oiler, water cooled turbos are old technology, just not on enough vehicles yet. Plus, there is always supercharging.

I wouldn't try to tow a boat with a Lotus 7 any more than I'd try to run a gymkhana with a 5.7 WK2.
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  #31  
Old 09-08-2016, 01:29 PM
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Re: The end of V8 Hemi in 2019?

Folks...of you payed any attention to me.or milous..you'd known this a year ago. It's in the plans to phase out the v8....

The base engine for the WL will be the 2.0 hurricane...jeep grand cherokee, charger and challenger.
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  #32  
Old 09-08-2016, 03:51 PM
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Re: The end of V8 Hemi in 2019?

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Originally Posted by billt View Post
Sure, they'll no doubt improve in longevity as time passes. The problem is to convince consumers of that. They can do it if they offer warranties just as long. But as of now they're not. Not Ford, Chrysler, Mercedes, BMW, or anyone else for that matter. If I could have gotten the same lifetime warranty with the turbo Eco Diesel in my Grand Cherokee, I'd be driving one now. But I couldn't, so I went with the HEMI.

I'll have the same attitude with any turbo gasoline engine. I'm going to keep my HEMI for a long time. But if I have to replace my truck that's quite old, (1991), I'll still be looking for a V-8..... If I don't wait too long.
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Originally Posted by billt View Post
And when they go it's EXPENSIVE. You cannot get unlimited mileage and time warranties with turbo's, like you can with the 5.7 HEMI. That isn't because they're so cheap and trouble free. Especially once they're past the factory warranty period.
Wait a second, wait a second - you can't get the lifetime warranty with the diesel???

I did not know this. This makes me very unhappy. I am close to pulling the trigger on ordering the TH with the diesel but now I'm thinking twice...argh....

I've always had the Hemi, in every Jeep I've driven except my first, and I have been happy with it, but was really looking forward to the power and mpg in the diesel.
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  #33  
Old 09-08-2016, 04:10 PM
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Re: The end of V8 Hemi in 2019?

That's right - no Lifetime warranty is available on the Diesel.
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Old 09-08-2016, 04:28 PM
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Re: The end of V8 Hemi in 2019?

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Originally Posted by Scottina06 View Post
Folks...of you payed any attention to me.or milous..you'd known this a year ago. It's in the plans to phase out the v8....

The base engine for the WL will be the 2.0 hurricane...jeep grand cherokee, charger and challenger.
Some of us are getting old. We paid attention to both of you. We understood exactly what you said.

But it is a year later ... we forgot.


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Old 09-08-2016, 05:03 PM
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Re: The end of V8 Hemi in 2019?

Hahahaha
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Old 09-08-2016, 05:41 PM
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Re: The end of V8 Hemi in 2019?

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Originally Posted by tkln View Post
Wait a second, wait a second - you can't get the lifetime warranty with the diesel???

I did not know this. This makes me very unhappy. I am close to pulling the trigger on ordering the TH with the diesel but now I'm thinking twice...argh....

I've always had the Hemi, in every Jeep I've driven except my first, and I have been happy with it, but was really looking forward to the power and mpg in the diesel.
I was in the same boat. I wanted the diesel, but when I found out you could not get the Lifetime Warranty with the Eco Diesel, that killed it for me. The HEMI it was. I don't understand it because one of the reasons for going diesel is longevity. But it's not there warranty wise. And diesels can cost a fortune if and when they go south. It just wasn't worth the gamble. Especially with the unlimited time and distance warranty with the HEMI.
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