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  #25  
Old 03-20-2017, 02:59 PM
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Re: Ice. Which setting to use?

Quote:
Originally Posted by 2014RedHemiGC View Post
The engine difference shouldn't make much difference except for perhaps the V8's better low rpm torque. The bigger difference would be the V8's available QuadraDrive sysytem which wasn't previously available with the V6.
I don't think low rpm torque is what you want or need in snow. That's one of the reasons why Snow Mode tells the trans to start in 2nd gear.

As for QDII, it's an option for both engines, no? I know that the TrailHawk has it standard on all engines.

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  #26  
Old 03-20-2017, 03:09 PM
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Re: Ice. Which setting to use?

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Originally Posted by RocketTR View Post
I don't think low rpm torque is what you want or need in snow. That's one of the reasons why Snow Mode tells the trans to start in 2nd gear.

As for QDII, it's an option for both engines, no? I know that the TrailHawk has it standard on all engines.
prior to 2017 ELSD (QDII) was not available on any v6 only the V8 and diesel as an option was probably what he meant.
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Old 03-20-2017, 03:09 PM
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Ice. Which setting to use?

For those with ACC / FCW the round sensor is being hold in place by 3 small plastic clips (part# 68085813AA ). Extremely easy to knock this thing out of alignment. Don't ask why I know this...
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  #28  
Old 03-20-2017, 03:37 PM
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Re: Ice. Which setting to use?

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Originally Posted by silvermax04 View Post
prior to 2017 ELSD (QDII) was not available on any v6 only the V8 and diesel as an option was probably what he meant.
Exactly! That's why I said "previously" not available.
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Old 03-21-2017, 07:31 AM
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Re: Ice. Which setting to use?

Quote:
Originally Posted by 2014RedHemiGC View Post
Exactly! That's why I said "previously" not available.
That's fine, but my point is that saying the V8 is somehow better in snow doesn't make sense. Why? Well, a V8 and a V6 could both be equipped with QTII, in which case they would be on even playing fields. And as mentioned, QDII is now available on the V6, which means that a V6 Grand Cherokee could have QDII while a V8 Grand Cherokee could have QTII, giving the advantage to the V6 vehicle in that situation.

BTW, I'd love to see the numbers on this, but my guess is that the vast majority of 2014 and newer V8 Grand Cherokees have QTII.

So I know the V6 TrailHawk comes with QDII standard, but can you get QDII on any other trim level with the V6?
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  #30  
Old 03-21-2017, 09:01 AM
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Re: Ice. Which setting to use?

Quote:
Originally Posted by RocketTR View Post

So I know the V6 TrailHawk comes with QDII standard, but can you get QDII on any other trim level with the V6?
Overland has it as an option, I believe.
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  #31  
Old 03-22-2017, 11:46 AM
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Re: Ice. Which setting to use?

There are 2 reasons I could imagine the V8 "might" be better in snow than the V6;
1. the greater weight of the V8 allowing more traction (given otherwise identical vehicles).
2. likely turning less rpm when working, so, if the tires do start to spin they are spinning at a lower initial speed (hypothetically, 3rd gear low rpm in V8 vs 2nd gear higher rpm in V6), therefore affording more initial traction, allowing an easier opportunity to modulate/recover and get back into "hooked up" driving. This "theory of mine" is in keeping with the trans starting out in 2nd gear when in snow mode, again, lower rpm...
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  #32  
Old 03-22-2017, 02:52 PM
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Re: Ice. Which setting to use?

Thanks Mike. You bring up some very good points.
The GC is heavy to begin with, so in snow mode with 50/50 torque split, the extra weight of the Hemi could help front wheel traction. The Hemi does rev less with more torque available on take-off. Snow mode starts in 2nd gear and uses traction control to help the tires hook up and not spin.

While out for dinner a couple of weeks ago, it started to pour rain on the snow-packed laneway. Needless to say, it turned into a slippery sheet of ice. I had trouble shuffling out to the car. Unbelievably, my Hemi in snow mode, had no trouble getting up the sloped laneway by basically just letting it crawl up the hill off-idle.
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