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  #85  
Old 03-27-2013, 06:01 AM
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Re: V-6 or V-8 on 2014-- Opinions

Lol...I think Bill meant if your that hung up about it that you need to seek Professional Help..Bad Bill...lol.

Yes 87 might retard the engine, but would do the same in the V6 and yes to dropping horses. How many you ask? I don't think anyone knows with the 2014 unless you take it on a dyno to check. It will adjust when it detects something has changed, the computer takes care of this. Who knows what happens if you mix 87/89 but truly why would you want to do that. If your worried about the few horses that you will lose then go with the V8 and less MPG. If your not so worried about that stuff and want the extra MPG, then get the V6.

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  #86  
Old 03-27-2013, 06:03 AM
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Re: V-6 or V-8 on 2014-- Opinions

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Originally Posted by john150 View Post
I am seeking help....on this board. Does anyone know what is the actual effect of using 87 octane with the hemi? I've heard it automatically retards the timing and drops some horses. How much? And when does it go back..usually you dont have a full tank of one grade of gas. What happens if you gas up with 89 and had a half tank of 87 or vice versa?
The computer doesn't measure octane, it senses knocking. It doesn't matter if you mix different octane fuels. As I just mentioned in another thread, at higher altitudes cars require lower octane due to thinner air ... lower compression.

With 87, the timing would not be retarded full time. Mostly when the engine is under strain ... hard acceleration or steep inclines. If you ever had a car that pinged on occasion, you know the circumstances that would cause the change in timing,
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Old 03-27-2013, 06:19 AM
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Re: V-6 or V-8 on 2014-- Opinions

Can the MDS on the V-8 be disengaged so it never drops to 4 cylinders? Does it go along with the ECO mode?
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  #88  
Old 03-27-2013, 06:30 AM
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Re: V-6 or V-8 on 2014-- Opinions

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Originally Posted by john150 View Post
Can the MDS on the V-8 be disengaged so it never drops to 4 cylinders? Does it go along with the ECO mode?
I'm not sure. I Googled it awhile back and there are conflicting stories. A couple of folks (or the same person using different screen names) claim the dealer can turn it off with the scan tool. Others say some tuners can do it, but it seems they might cause the check engine light to turn on.

Interesting that a few claim it causes a vibration at low speed that is often mistaken for a transmission hunting for the correct gear.

Good question John. I hope we get a definitive answer ... and the answer is yes.
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  #89  
Old 03-27-2013, 02:11 PM
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Re: V-6 or V-8 on 2014-- Opinions

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Originally Posted by seanster View Post
Old-school thought to a long thread: The more powerful engine has to work less.

The "gain" in the GC V6 (3 MPG) is negligible, to me, ...
Actually the smaller Pentastar engine with DOHC is designed to be better breathing, produces more HP/ displacement, plus it's a lot lighter so traveling down the road at the same speed as the Hemi, the Pentastar is the one working less.

I went by the EPA combined for 2012, and the difference is 15 mpg on midgrade v. 19 mpg on regular. So it's about a 30% fuel cost savings, which is huge. Since I drive at least 20k miles in a year, the savings is about $1200. That doesn't include the reduced capitalization and maintenance costs, which are also significant.
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Old 03-27-2013, 03:55 PM
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Hi, as an owner of a 2012 crd, i would suggest waiting for the crd, believe me it is the best of both worlds,v8 like performance and economy better than the v6, also there is going to be a lot of regrets by owners that don't wait to at least test drive the crd, extra outlay to buy but i can promise you that you'll have an extra smile every time you drive.
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Old 03-27-2013, 04:14 PM
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Re: V-6 or V-8 on 2014-- Opinions

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Originally Posted by Clubby360 View Post
Hi, as an owner of a 2012 crd, i would suggest waiting for the crd, believe me it is the best of both worlds,v8 like performance and economy better than the v6, also there is going to be a lot of regrets by owners that don't wait to at least test drive the crd, extra outlay to buy but i can promise you that you'll have an extra smile every time you drive.
I have never driven a CRD nor will I probably every. Some people have no reason for it.
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  #92  
Old 03-27-2013, 04:17 PM
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Re: V-6 or V-8 on 2014-- Opinions

V-6 costs a couple thousand less out of the gate. Due to lighter weight it handles much better and does not have that heavy nose you get with a V-8 + 4WD.

At 100,000 miles a V-6 will still be on it's original plugs, while the V-8 will have gone through 48 of them.

Using regular gas in a V-8 will reduce the power that buyers said they need. Going up hills or in hot weather the knock sensor will dial back torque.

V-6 is designed for mid range pulling power. The Hemi was designed during much less fuel efficient days.

No need to go under the car to replace the v-6 oil filter. No mess, as it is right on the top forward of the engine.

New 8 speed is well fitted for the v-6. Allows the smaller engine to be more fuel efficient, and use its power well.

Only reason to buy a V-8 is if you are towing or if you are rich enough pay a bunch more to get a better "feeling" engine.
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  #93  
Old 03-27-2013, 04:20 PM
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Re: V-6 or V-8 on 2014-- Opinions

Quote:
Originally Posted by Uncle Paul View Post
V-6 costs a couple thousand less out of the gate. Due to lighter weight it handles much better and does not have that heavy nose you get with a V-8 + 4WD.

At 100,000 miles a V-6 will still be on it's original plugs, while the V-8 will have gone through 48 of them.

Using regular gas in a V-8 will reduce the power that buyers said they need. Going up hills or in hot weather the knock sensor will dial back torque.

V-6 is designed for mid range pulling power. The Hemi was designed during much less fuel efficient days.

No need to go under the car to replace the v-6 oil filter. No mess, as it is right on the top forward of the engine.

New 8 speed is well fitted for the v-6. Allows the smaller engine to be more fuel efficient, and use its power well.

Only reason to buy a V-8 is if you are towing or if you are rich enough pay a bunch more to get a better "feeling" engine.
Wow...well said!!
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  #94  
Old 03-27-2013, 05:03 PM
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Quote:
Originally Posted by Uncle Paul View Post
V-6 costs a couple thousand less out of the gate. Due to lighter weight it handles much better and does not have that heavy nose you get with a V-8 + 4WD.

At 100,000 miles a V-6 will still be on it's original plugs, while the V-8 will have gone through 48 of them.

Using regular gas in a V-8 will reduce the power that buyers said they need. Going up hills or in hot weather the knock sensor will dial back torque.

V-6 is designed for mid range pulling power. The Hemi was designed during much less fuel efficient days.

No need to go under the car to replace the v-6 oil filter. No mess, as it is right on the top forward of the engine.

New 8 speed is well fitted for the v-6. Allows the smaller engine to be more fuel efficient, and use its power well.

Only reason to buy a V-8 is if you are towing or if you are rich enough pay a bunch more to get a better "feeling" engine.

WOW! Who knew the V6 has soooo many advantages over the 5.7. Crazy! And here I am, hooked on a feeling.....
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Old 03-27-2013, 07:49 PM
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We are more than happy with our '14 V6. I have a Camaro SS to give me that hooked on a feeling in the seat of my pants.
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Old 03-27-2013, 08:40 PM
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Re: V-6 or V-8 on 2014-- Opinions

Quote:
Originally Posted by Uncle Paul View Post

Only reason to buy a V-8 is if you are towing or if you are rich enough pay a bunch more to get a better "feeling" engine.
This subject comes up annually here and the point that gets missed by the short sighted is the most important Jeep reason to buy the V8. You can't get Quadra Drive with a V6. Sorry but the V6 just doesn't cut it for other than a "fair" weather mall cruiser unless you mod it, and if that's all that you need then it is certainly a satisfactory and very good vehicle. Have a good day


PS, you missed how many cylinder heads the V6 goes through in 100,000 miles. I suspect that will be a substantial ownership cost and hit on resale that is not being considered in the analysis... just saying that in your haste you missed or dismissed a few important considerations.

And those of us with the V8 save some cash by getting rid of all those Camaros and Mustangs that just sit in the garage. I got rid of my SLK because I was always choosing to drive the V8 WK2 instead... start thinking out of the box here. If you are going to put together a nice story, don't be the master of the obvious while leaving out important chapters. Thats a signature of being lazy or full of yourself dude...
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