Will the JK ever get more power? - Page 2 - JeepForum.com
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post #16 of 37 Old 11-14-2006, 11:54 AM
Karamba
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Quote:
Originally Posted by chris269
Your already talking 30K for a ruby whats another 2 to 3K to have a V8. It's worth it.
One of the reasons: CAFE.

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post #17 of 37 Old 11-14-2006, 12:24 PM
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Quote:
Originally Posted by Karamba
One of the reasons: CAFE.
OK so whats CAFE
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post #18 of 37 Old 11-14-2006, 12:40 PM
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Quote:
Originally Posted by chris269
OK so whats CAFE
http://www.nhtsa.dot.gov/Cars/rules/CAFE/overview.htm

Corporate Average Fuel Economy (CAFE) is the sales weighted average fuel economy, expressed in miles per gallon (mpg), of a manufacturer’s fleet of passenger cars or light trucks with a gross vehicle weight rating (GVWR) of 8,500 lbs. or less, manufactured for sale in the United States, for any given model year. Fuel economy is defined as the average mileage traveled by an automobile per gallon of gasoline (or equivalent amount of other fuel) consumed as measured in accordance with the testing and evaluation protocol set forth by the Environmental Protection Agency (EPA).

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post #19 of 37 Old 11-14-2006, 01:05 PM
chris269
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Quote:
Originally Posted by Karamba
One of the reasons: CAFE.

So what does the price have to do with fuel economy
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post #20 of 37 Old 11-14-2006, 01:36 PM
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Quote:
Originally Posted by chris269
So what does the price have to do with fuel economy
Its not the cost of how much more it would cost a consumer to get the V8, its the opportunity cost for the manufactor.

Dropping a V8 in the Wrangler would hurt Chrysler's corporate truck CAFE average. If im not mistaken, for light trucks/SUVs, it much maintain a corporate average of 22.5 mpg. If it dips under that, they face some hefty fines. So to counter the drop, they might have to offer a 4 cylinder version as well.(i.e.)

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post #21 of 37 Old 11-14-2006, 01:39 PM
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Quote:
Originally Posted by SecondTJ
Its not the cost of how much more it would cost a consumer to get the V8, its the opportunity cost for the manufactor.

Dropping a V8 in the Wrangler would hurt Chrysler's corporate truck CAFE average. If im not mistaken, for light trucks/SUVs, it much maintain a corporate average of 22.5 mpg. If it dips under that, they face some hefty fines. So to counter the drop, they might have to offer a 4 cylinder version as well.(i.e.)
I thought that's why they have the compass and patriot.

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post #22 of 37 Old 11-15-2006, 06:07 AM
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did you know the a corvette with it's 400 hp if driven correctly will get 30mpg so don't give me this crap of they need this or they need that. just make it happen and give us our Hemi
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post #23 of 37 Old 11-15-2006, 06:28 AM
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Quote:
Originally Posted by chris269
did you know the a corvette with it's 400 hp if driven correctly will get 30mpg so don't give me this crap of they need this or they need that. just make it happen and give us our Hemi
Aerodynamics has a bit to do with that... the vette doesn't take much to push it thru the wind. A Jeep is a different story. That's not to say that it couldn't be made to do better than the 6cyl though!


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post #24 of 37 Old 11-15-2006, 07:30 AM
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Quote:
Originally Posted by chris269
did you know the a corvette with it's 400 hp if driven correctly will get 30mpg so don't give me this crap of they need this or they need that. just make it happen and give us our Hemi
Not only is it aerodynamics like nezzr said, your talking a brick vs a plane almost.
But the 6th gear ratio in the T-56 trans is .5:1 that is very high, the thing only revs at just over 1000 on the highway with that gear. In which case it can pull 28-29 mpg.

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post #25 of 37 Old 11-15-2006, 07:50 AM
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Just put a Hemi in it.
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post #26 of 37 Old 11-15-2006, 09:21 AM
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Originally Posted by 03jeeper78
I thought that's why they have the compass and patriot.
Yes, if im not mistaken the Compass is just a Caliber rebadged. But its also classified as a car, not a truck.

I'm not sure about the patriot, but DCX needs the sales of these to offest the volume they lost with the Neon. Plus all the big trucks they sell, and they just came out with the Aspen, a rebadged Durango that sucks gas down.

Quote:
Originally Posted by chris269
Just put a Hemi in it.

only way your going to get it, is by doing a swap yourself.

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post #27 of 37 Old 11-15-2006, 09:29 AM
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what i dont get is chevy's 5.3 v8 gets 15-17 mpg in a 4x4 platform. why cant DC get a V8, back the fuel off and get it up around 20mpg? the jeeps not that heavy, a jeep with a v8 should have no problem getting 20mpg if designed and driven right.

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post #28 of 37 Old 11-15-2006, 09:49 AM
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Call me ignorant but why can't they offer the Diesel here in the US when they are already putting a diesel engine in Jeeps for the over sea markets? How tough would it be to get the engine up to us standards if it's simply an emmissions thing?

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post #29 of 37 Old 11-15-2006, 10:01 AM
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Quote:
Originally Posted by firefly
Call me ignorant but why can't they offer the Diesel here in the US when they are already putting a diesel engine in Jeeps for the over sea markets? How tough would it be to get the engine up to us standards if it's simply an emmissions thing?
Give it a couple years yet. Diesels are getting better, but are not quite there yet.

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post #30 of 37 Old 11-15-2006, 11:25 AM
chris269
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Quote:
Originally Posted by Jakemd98
what i dont get is chevy's 5.3 v8 gets 15-17 mpg in a 4x4 platform. why cant DC get a V8, back the fuel off and get it up around 20mpg? the jeeps not that heavy, a jeep with a v8 should have no problem getting 20mpg if designed and driven right.
Thats what i was saying. they can make it fuel efficient. were not talking about a fire breather, 300hp max.
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