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  #13  
Old 09-09-2010, 09:45 AM
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Re: Why no Quadra-Drive II on a V6?

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Originally Posted by Marlin View Post
Yeah, when i read the "durablity of driveline" i wondered the same... Durability of what?
Unfortunately no further explanation was forthcoming. Maybe next time we can ask one of them to expand on that for us?
I wonder if it's the transmission. The Mercedes W5A580 may not be up to the task; I can't imagine that it would be the engine itself.
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Old 09-09-2010, 10:03 AM
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Re: Why no Quadra-Drive II on a V6?

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Originally Posted by Technosavant View Post
I wonder if it's the transmission. The Mercedes W5A580 may not be up to the task; I can't imagine that it would be the engine itself.
Interesting rumination. If so, the existing 5-speed might be preferable just for its longevity, at least for drivers who like to kick ass.
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Old 09-09-2010, 10:49 AM
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Re: Why no Quadra-Drive II on a V6?

Possibly the axle half-shafts? The specs note the diameter difference with the V6, and possibly with power quickly shifting from side to side, they don't handle the torque as well?
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Old 09-09-2010, 05:19 PM
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Re: Why no Quadra-Drive II on a V6?

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Originally Posted by Technosavant View Post
I wonder if it's the transmission. The Mercedes W5A580 may not be up to the task; I can't imagine that it would be the engine itself.
I doubt that, since the "same" tranny is used in the current SRT8 and behind the very torquey diesels.... unless of course the V6 version has downrated internals, but I would have thought that would normally bring a different code number.
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Old 09-10-2010, 02:36 PM
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Re: Why no Quadra-Drive II on a V6?

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Originally Posted by Jim Hef View Post
Possibly the axle half-shafts? The specs note the diameter difference with the V6, and possibly with power quickly shifting from side to side, they don't handle the torque as well?
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?
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Old 09-10-2010, 03:07 PM
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Re: Why no Quadra-Drive II on a V6?

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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Old 09-10-2010, 03:13 PM
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Re: Why no Quadra-Drive II on a V6?

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Originally Posted by Jim Hef View Post
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.
Beat me to it.

Also, I do believe you can get QTII in the Laredo by getting the Offroad Adventure I and still have the V6. Therefore, have the 4Lo ability with the V6
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Old 09-10-2010, 03:36 PM
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Re: Why no Quadra-Drive II on a V6?

OffRoad II is listed as available on the Laredo also, and not just for the V8.
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Old 09-10-2010, 03:56 PM
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Re: Why no Quadra-Drive II on a V6?

Thanks. Better that I'm missing the mark than Jeep!
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