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  #25  
Old 02-15-2014, 06:59 PM
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Re: WK2 Hemi 0-60

look up page 3 of the diesel grand Cherokee not quite grand thread
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  #26  
Old 02-17-2014, 07:08 PM
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Re: WK2 Hemi 0-60

Was the road level? I can imagine getting better 0-60 going downhill compared to others.
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  #27  
Old 02-19-2014, 10:25 AM
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Quote:
Originally Posted by dubwarren View Post
All I know is I dusted an 11 Acura mdx. His was a v6 though. A protein snack for my hemi.
That's what I drive, but I follow here because I talked my sister into the GC when we decided not to buy one. All MDXs are V6. 0-60 in 7.0 seconds. The '14 Jeep does it in about 6.6, so not too much dusting or snacking

The Explorer Sport eats your hemi for a protein snack with a 5.7sec 0-60 and the same horsepower as the hemi.
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  #28  
Old 02-19-2014, 10:51 AM
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Re: WK2 Hemi 0-60

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Originally Posted by Bmwister View Post
For the record, this is not my vehicle in the video but I'd say mine moves out about the same or a tick quicker.

I've stated my opinion in other threads that many of the "published" acceleration times were simply a repeat of factory estimates (7.5 for the Hemi, 8.5 for the Pentastar). Many online "road tests" repeating these numbers (without empirical measurement) sort of makes the numbers a de facto standard when they are not.

Regarding published times: In the very few cases where a magazine actually performed a timed test, they did so with a well-abused press pool vehicle. Having worked for a manufacturer and handled press pool vehicles I can unequivocally state they are beaten up and abused and only sometimes was a fresh vehicle provided to R&T, C&D or MT for testing. In other words there is not enough data to accurately assess road performance.
A while back (5 years?) I had an LS1 F-body. It had around 70K miles on it when I got it. I was curious how slow it was compared to new, so I started digging.

I found several dyno's which showed 290-310rwhp on bone-stock 100K+ mile vehicles.

My dealership also sold a 1998 Camaro Z28 with 113K miles on it. Bone stock + a Flowmaster muffler (known to cost 10rwhp on the dyno, for that vehicle). I watched it with my own eyes run a 13.1@103mph on drag-radials. With street tires, the new owner claimed 13.3-13.4@104-105.

This is what these cars were running brand new.

So, while I cannot say that the 5.7L Hemi is the same, I can say that I feel very strongly that modern engines do not lose power just because they have 100K+ miles and are flogged on. This has been also proven with many long-term test vehicles, where the testers perform acceleration tests when they acquire the vehicle, and again when they hit 20K+ miles. I have seen vehicles "get faster" by a tenth or two, or a half a mph or so, and I have seen them get slower by the same margin. This holds true for every vehicle I have ever seen "long term test data" for, across the spectrum of Japanese 4-cylinder cars, to Corvettes.

Again, this is not about the Dodge 5.7L, but I think some parallels are certainly fair to be drawn.
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  #29  
Old 02-19-2014, 01:01 PM
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Re: WK2 Hemi 0-60

Quote:
Originally Posted by overlanding View Post
That's what I drive, but I follow here because I talked my sister into the GC when we decided not to buy one. All MDXs are V6. 0-60 in 7.0 seconds. The '14 Jeep does it in about 6.6, so not too much dusting or snacking

The Explorer Sport eats your hemi for a protein snack with a 5.7sec 0-60 and the same horsepower as the hemi.
Now take that Explorer offroad and see what happens.
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Old 02-19-2014, 01:14 PM
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Quote:
Originally Posted by devilsadvocate View Post
Now take that Explorer offroad and see what happens.
Aren't we talking about 0-60 times? I'm not trying to do a pro or con, I was just comparing them because the ecoboost has like the same exact hp and two less gears. Although it's geared more towards performance I get that. I have owned an explorer sport, it was a terrible vehicle so I'm not trying to one up the GC.
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  #31  
Old 02-19-2014, 01:28 PM
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Re: WK2 Hemi 0-60

OK so lets run them hard 100k miles and see how that goes! while we are at it just turn the Eco boost engine off at night right after coming off the expressway with no cool down or spin down (on the turbo) time...
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  #32  
Old 02-19-2014, 02:18 PM
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Sensitive much?
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  #33  
Old 02-19-2014, 03:59 PM
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Re: WK2 Hemi 0-60

Quote:
Originally Posted by overlanding View Post
Aren't we talking about 0-60 times? I'm not trying to do a pro or con, I was just comparing them because the ecoboost has like the same exact hp and two less gears. Although it's geared more towards performance I get that. I have owned an explorer sport, it was a terrible vehicle so I'm not trying to one up the GC.
Yes and no. It is important to compare like with like. One reason many of us won't consider the SRT is that it removes much of the 4WD functions and capabilities that are the reason we buy a Jeep. But 0-60 time it blows away everything we are discussing. It is the same reason we don't bring up Corvettes when we're discussing 0-60 here.

The reason that the SRT gets rid of the 4WD functionality is that all of that stuff weighs a lot and has performance implications. That is also a large reason the Explorer Sport does so much better despite having the same HP.

So my point is not to write off those that are faster, but to level set regarding the topic. When the Range Rovers do the same or better but retain the offroad capabilities then I perk up. When an SUV removes offroad capabilities to lose weight which helps performance then that is far less interesting.
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Old 02-19-2014, 07:39 PM
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You're talking about corvettes, range rovers and the SRT. All I did was compare two American SUVs of similar weight with the same hp. The guy I commented was talking about eating an acura MDX, so I mentioned a few that are faster and suddenly that's a problem. Having owned a 2012 GC hemi, explorer sport and the MDX I do know that a 2011-13 hemi GC isn't faster than the MDX.

My point is, no one had a problem with a GC beating a different SUV and I point out a more so similar SUV and suddenly I'm wrong and people are throwing digs. Ironic.
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Old 02-19-2014, 07:45 PM
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Re: WK2 Hemi 0-60

And if it didn't have so much throttle lag it might be quicker than my WJ 4.7L!
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Old 02-19-2014, 09:18 PM
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Re: WK2 Hemi 0-60

Quote:
Originally Posted by overlanding View Post
You're talking about corvettes, range rovers and the SRT. All I did was compare two American SUVs of similar weight with the same hp. The guy I commented was talking about eating an acura MDX, so I mentioned a few that are faster and suddenly that's a problem. Having owned a 2012 GC hemi, explorer sport and the MDX I do know that a 2011-13 hemi GC isn't faster than the MDX.

My point is, no one had a problem with a GC beating a different SUV and I point out a more so similar SUV and suddenly I'm wrong and people are throwing digs. Ironic.
Back when I was hooning around on the street, we had a saying "Anything can happen on the street".

Well, it's true. I remember numerous races I had (in my past, mind you...) where the other guy got a slight hit, or I was in a gear too high by maybe 800rpm, or any number of things that you wouldn't think would matter. It does. Hugely.

I raced a 2002 Mustang GT in my 2001 WS.6 one time. WE rolled onto it after a corner, and he kept up pretty darn good!

I was stunned and sad.

Anyway, we lined them up again and hit it on his honk, both of us in our preferred gears, and by 100, I had left him by 2 buslengths. A raging stomping for which he made no excuse.

What I'm trying to say is that instrumented testing doesn't mean crap on the street often times, so yes, I think that the poster who said they beat an MDX really did do so, it really was racing, and it really was as bad as he says. Maybe the MDX was in a really crappy spot rpm/gear-wise? Maybe the traction control cut the guy. Maybe...

On the street anything is possible.
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