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  #181  
Old 05-02-2012, 10:19 AM
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Re: Advice needed.. V6 or V8?

The Pentastar is one of the best engines, no doubt about that; it's the transmission and software behind it that suck. Just like the transmission and software behind the Hemi suck. And to say I'm sure glad I didn't get the Hemi because of the "MDS issue" makes about as much sense as saying I'm sure glad I didn't get the Pentastar because of the shuddering/lagging/hunting gears issue.
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  #182  
Old 05-02-2012, 11:21 AM
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Re: Advice needed.. V6 or V8?

The Mercedes W5A580 transmission is one of the smoothest 5-speeds around. My 2012 GC has none of the transmissions issues you mention. And in our company fleet with many 2011-12 GC's (mostly 3.6L, with a few 5.7 Hemis), our mechanics cannot recall a single complaint about transmission shuttering, erratic shifting or hunting on the 3.6L/5 speeds. I have personally driven many of our GC's on extended trips the past 2 years and have never had an issue with engines or tranmissions (now, tires are a separate issue).

Sounds like you have an issue with yours, that you wish others to share. And I don't think you will get a lot of GC owner's agreeing.

I will be interested to drive the 8-speed in the 2014 models GC's. We already have several of the 2012 Charger 3.6L/8-speeds in our fleet. I have driven a few and find it does tend to hunt more than the 5-speed in hilly freeway areas, but it does add about 2 mpg on the RWD Charger models.

From WK2Jeeps.com and AllPar.com:

"The W5A580 debuted in 1995 Mercedes-Benz passenger vehicles and is known to be one of the smoothest, most fuel-efficient and cost-effective transmissions in the industry. Its unique three-channel torque converter helps provide an exceptionally smooth ride and shifting, while reducing fuel consumption. A $455 million upgrade project at the Indiana Transmission Plant was started in 2001 and completed in 2003. The 600,000 SF plant was designed to produce around 400,000 of the W5A580 transmissions per year for the North American market. The transmission project was the first joint effort between the company's American and German wings after the Chrysler Corp. and Daimler-Benz merge in 1998.

A broad ratio spread from First to the Fifth was selected to minimize fuel consumption and reduce powertrain noise during cruising. An aggressive First-gear ratio provides excellent launch performance, and evenly spaced gear ratios provide smooth acceleration through the gears. "
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  #183  
Old 05-02-2012, 11:43 AM
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Re: Advice needed.. V6 or V8?

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Originally Posted by Yadkin View Post
Apparently mine wasn't one of the 657 vehicles that were affected. Not exactly a design defect.
Exactly my point...so how can you lump all V8s together as having MDS issues? It is obviously not a widespread problem.
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  #184  
Old 05-02-2012, 11:44 AM
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Re: Advice needed.. V6 or V8?

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Originally Posted by Justal13 View Post
The Mercedes W5A580 transmission is one of the smoothest 5-speeds around. My 2012 GC has none of the transmissions issues you mention. And in our company fleet with many 2011-12 GC's (mostly 3.6L, with a few 5.7 Hemis), our mechanics cannot recall a single complaint about transmission shuttering, erratic shifting or hunting on the 3.6L/5 speeds. I have personally driven many of our GC's on extended trips the past 2 years and have never had an issue with engines or tranmissions (now, tires are a separate issue).

Sounds like you have an issue with yours, that you wish others to share. And I don't think you will get a lot of GC owner's agreeing.
Of course yours doesn't, of course they can't and of course you haven't. The transmission and/or software tuning have been some of the biggest universal complaints with the WK2 thus far. Jeep has even issued more than one TSB for these issues you've heard nothing about. But my point was, it's pretty silly for someone to say they wouldn't buy the 6 or the 8 because of a certain issue that may or may not affect everyone.
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  #185  
Old 05-02-2012, 11:47 AM
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Re: Advice needed.. V6 or V8?

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Originally Posted by 77rednecktruck View Post
I can agree with the Pentastar being one of the best engines. It makes a lot of power and has been reliable. It just doesn't compare power wise to the v8 in a heavy suv.

bigger is always better
To each his own. I prefer the slendar, athletic type.
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  #186  
Old 05-02-2012, 11:55 AM
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Re: Advice needed.. V6 or V8?

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Originally Posted by bmrisko View Post
Exactly my point...so how can you lump all V8s together as having MDS issues? It is obviously not a widespread problem.
In my opinion, as an engineer and a shade-tree mechanic, "turning off" half of the cylinders while they are still moving up and down is inherently a poor concept. I could list lots of things that could go wrong, and I'm sure Chrysler learned from GM's debacle with it, but still, why bother when turbocharging a smaller engine can do a better job? There are also the inherent inefficiencies, and based on the EPA numbers those were not overcome in this design.
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  #187  
Old 05-02-2012, 12:39 PM
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Re: Advice needed.. V6 or V8?

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Originally Posted by Yadkin View Post
In my opinion, as an engineer and a shade-tree mechanic, "turning off" half of the cylinders while they are still moving up and down is inherently a poor concept. I could list lots of things that could go wrong, and I'm sure Chrysler learned from GM's debacle with it, but still, why bother when turbocharging a smaller engine can do a better job? There are also the inherent inefficiencies, and based on the EPA numbers those were not overcome in this design.
The issue always comes back to $$$. It was probably all Chrysler could do to develop the Pentastar during and post-bankruptcy. But at least they could equalize the cost by spreading it out across models. And you see it's taking a few years for the 8-speed to roll out across-the-board. I'm sure they would love to replace the aging Hemi with a smaller, more efficient, forced-induction V8 or V6 (gasp!), but that's a lot of money to spend for a relatively-small market; even when you factor-in the bigger sellers like the Ram brand. Eventually they'll have no choice, as they can only put on Band-Aids (like MDS, or the '13 Ram 1500's start/stop, grille shutters, etc.) for so long. And who knows, MDS may still stick around. Acura just debuted it on the RDX to much fanfare.
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  #188  
Old 05-02-2012, 12:41 PM
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Re: Advice needed.. V6 or V8?

Go with the V8.

I have an '11 with a V6. The missus just bought a '12 with a V8. I know I've sung the praises of the V6, and it's a damn fine engine. But honestly, knowing the wife has a vehicle that could kick mine's arse in the 1/4 sucks. (that being said, she'll never take her precious little JGC the places I take mine!)
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  #189  
Old 05-02-2012, 12:48 PM
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Re: Advice needed.. V6 or V8?

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Originally Posted by SMG1 View Post
The issue always comes back to $$$. It was probably all Chrysler could do to develop the Pentastar during and post-bankruptcy. But at least they could equalize the cost by spreading it out across models. And you see it's taking a few years for the 8-speed to roll out across-the-board. I'm sure they would love to replace the aging Hemi with a smaller, more efficient, forced-induction V8 or V6 (gasp!), but that's a lot of money to spend for a relatively-small market; even when you factor-in the bigger sellers like the Ram brand. Eventually they'll have no choice, as they can only put on Band-Aids (like MDS, or the '13 Ram 1500's start/stop, grille shutters, etc.) for so long. And who knows, MDS may still stick around. Acura just debuted it on the RDX to much fanfare.
I think a new V8 would be a seller if was as nice as the new Ford 5.0, which makes 84HP/ liter.
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  #190  
Old 05-02-2012, 06:53 PM
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Re: Advice needed.. V6 or V8?

As I posted earlier, I had remorse with the V6. I bought it in December and just picked up the V8 today. Don't get me wrong, it was a good engine, smooth, quiet.

So I have only driven home from the dealer, most of it highway. I'll post more feedback when I get some more miles with it. Already in stop and go traffic I can tell I get back to speed without it fighting or getting stuck in a lull. That was my biggest complaint.
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  #191  
Old 05-02-2012, 07:08 PM
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Re: Advice needed.. V6 or V8?

V6, I6 what's the difference. Its still a 3 liter 6 something and pretty interchangable. But I'm a speed power freak. The V8 is small for me but the SRT just seemed to much more expensive to splurge for. I'd rather save the cash, put a new big block in there, and beat an SRT8 for less. Maybe a 440 block stroked to 528 CI with 650 hp? No replacement for displacement.
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  #192  
Old 05-02-2012, 07:23 PM
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Re: Advice needed.. V6 or V8?

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Originally Posted by fundguy View Post
The V8 is small for me but the SRT just seemed to much more expensive to splurge for. I'd rather save the cash, put a new big block in there, and beat an SRT8 for less. Maybe a 440 block stroked to 528 CI with 650 hp? No replacement for displacement.
Please tell me my sarcasm meter is broken and you're just joking.
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