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Why no Quadra-Drive II on a V6?

8K views 20 replies 10 participants last post by  Lingohocken 
#1 ·
Does anyone know why you can only get Quadra-Drive II (with ELSD) only if you upgrade to the HEMI? Is the V6 not powerful enough? Is it just a lame marketing thing to get people to buy the more expensive HEMI? ...or are there actually technical reasons why this just isn't even possible with the V6?
 
#4 ·
I don't think the lack of Quadra-Drive II with the V6 is due to technical reasons, but rather due to production problems.

Here is my reasoning:
1. Quadra-Drive II was offered as a stand-alone option pick for for Overland V6 model on the Jeep.ca web site back in June for several weeks, before it was taken out in early July. Sounds too long to have been just a web site error.
2. My local dealer was certain that the V6 Overland could be ordered with Quadra-Drive II (either as a stand alone option or with the ORGII package) in early July, according to his info. Unfortunately, at the time I wanted to hold for the Limited V6 with Quadra-Drive II, which was hoped to be offered 'soon.' So far no dice.
3. According to Milous and other posters to this site, the WK2 production at JNAP is running about 800 per day on average, with 70% choosing the V6. That means they need 560 V6 engines per day to meet demand.
4. But, according to posters on this site also, the Trenton plant is making about 400 Pentastars per day. Given that there were also early production problems back in April/May in Trenton, the Pentastars must be in constrained supply.
5. Adding to the problem, the Pentastar is supposed to be featured in other new models this fall (why did it not appear in the new Wrangler?). The shortage will only get worse until Trenton and, later, Mexican production ramp up.

So, I believe that Chrysler is restricting several enticing option groups for sale only with the Hemi V8 for now. Hopefully, since I do not tow, want the better fuel economy and have heavy snow and a long lane to deal with, I will be able to buy a Quadra-Drive II with V6 sometime later on.

Meantime, we wait. Milous, any comments?
 
#6 ·
Well this question came up twice in the Sept. 8 chat with Jeep Engineers, and they pretty well put the question to rest (for now at least).

See answers #42 and #67 of the chat (hopefully these numbers will not change). To paraphrase their answers about whether QDII and V6 would be offered together:

JeepEngineer1: Not offered due to "Durability of driveline."

JeepEngineer2: "Not currently in the plan."

So at least I can stop dreaming. Better to know the truth, even if bitter.
 
#7 ·
I'd like to hear them explain the durability thing..... The engine must be the weakest link because there's no way that satanic pentastar motor could work the QD more than the hemi.
 
#12 ·
Milous:

The 400 Pentastars per day figure came from the August 25 post from Marlon JB2 (Post No. 29 in the thread "Hell, It's easy to build an Overland").

But I am happy to hear that production is better than that. 700 per day would meet the demand for the WK2 at least.

Thanks for the update.
 
#17 ·
I don't do much offroad, but what I do is serious stuff and absolutely requires the low speed found in the QDII's transfer case (supposedly lacking in the QD1). What earthly use is a Jeep without a low-gear option transfer case?

Hef, you may well be right, but if so they should use the beefier half-shafts as part of the QDII layout.

Am I missing something here, or does the choice simply come down to V8 with two-speed transfer box, or V6 without?
 
#18 ·
I think you are confusing QTII and QDII. Both use the same transfer case, but QD adds the rear limited slip diff. Both have 4Lo and SelecTerrain. QTII will control the slip via brake application to both ends. Judgment on the effectiveness of either system is yet to be determined. As to QTI, there are many that won't ever engage 4Lo, even with systems that have that. Hell, there are many that purchase 4x2 versions, especially in the southern states.
 
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