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Author Topic: Pentastar JK  (Read 4060 times)

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Offline chrisfranklin

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Pentastar JK
« on: August 27, 2011, 03:31:51 PM »
Searched around and didn't see it discussed here, but it looks like the 2012 JKs are set-up pretty well with their Pentastar 3.6 V6s.   

I don't really need one, but if I was in the market for a new Wrangler, I'd probably get a 2dr 6spd, maybe Rubicon
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor

Offline Jeffy

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Re: Pentastar JK
« Reply #1 on: August 27, 2011, 04:36:53 PM »
Not for what they want.
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Offline chrisfranklin

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Re: Pentastar JK
« Reply #2 on: August 27, 2011, 05:12:29 PM »
They are pricey, 2 Dr Rubicon probably low 30s by the time you are out the door.  But the JK Pentastar Rubicon brings a few features that might make it worthwhile for the dough.  Not saying its a steal or anything  :lol:   Of course, then it's all new and pretty and you don't want to use it and bang it up while you're paying for it. 

Maybe I'll buy a 2012 model in 2017 -- my YJ was a '94 bought in '99 ...
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor

Offline chardrc

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Re: Pentastar JK
« Reply #3 on: August 27, 2011, 05:13:29 PM »
anyone else see the exhaust downpipe on the pentistar? has a nice loop in it for added rock hitting ability.
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1990 YJ 4cly, ax5, 2.5 inch BDS lift, 31 MTr\'s,  Powertrax-lockers all around, track-bars removed, boomerang shackles, warn m8000 winch, electric fan. [sold but not forgotten]

2007 jk Rubicon 2dr

RT

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Re: Pentastar JK
« Reply #4 on: August 27, 2011, 07:48:46 PM »
They're too overengineered for jeepers. Overengineering=expensive+hard to work on. Which is pretty much everything a jeep shouldn't be. However, my mom did get a 2011 and I'm jealous of it's cushiness from time to time.
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Offline chrisfranklin

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Re: Pentastar JK
« Reply #5 on: August 28, 2011, 03:32:25 AM »
But other than the power windows and the Rubicon's driver-controlled sway disconnect, what makes it engineered any more than a TJ or TJ Rubicon? 
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor

Offline chrisfranklin

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Re: Pentastar JK
« Reply #6 on: August 28, 2011, 12:03:05 PM »
Correction:  Forgot about the electronic throttle
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor

Offline chrisfranklin

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Re: Pentastar JK
« Reply #7 on: August 28, 2011, 03:21:34 PM »
Correction:  And the Dash screen
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor

Offline chrisfranklin

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Re: Pentastar JK
« Reply #8 on: August 28, 2011, 04:00:10 PM »
Quote from: chardrc on August 27, 2011, 05:13:29 PM
anyone else see the exhaust downpipe on the pentistar? has a nice loop in it for added rock hitting ability.

Guess they really wanted the exhaust tubing equal-length...Gives the after-market something to do, at least...

If Jeep got everything perfect, they'd be fascists  :wall: :lol: 
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor

Offline chardrc

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Re: Pentastar JK
« Reply #9 on: August 28, 2011, 05:47:26 PM »
still don't understand why they are going with integrated manifolds on the new v6 engines (gm is doing the same thing) would think that would keep more heat in the head and ultimately be more restrictive and have no possibility of equal length for each cyl.
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1990 YJ 4cly, ax5, 2.5 inch BDS lift, 31 MTr\'s,  Powertrax-lockers all around, track-bars removed, boomerang shackles, warn m8000 winch, electric fan. [sold but not forgotten]

2007 jk Rubicon 2dr

RT

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Re: Pentastar JK
« Reply #10 on: August 28, 2011, 06:43:22 PM »
Quote from: chrisfranklin on August 28, 2011, 03:32:25 AM
But other than the power windows and the Rubicon's driver-controlled sway disconnect, what makes it engineered any more than a TJ or TJ Rubicon? 

Ok, the computer controlled climate controll, the plastic body, the massive alloy wheels, thinner body panelling, the entire motor (3.7 v6DOHC, or 3.6 Pentastar DOHC) are both expensive and more difficult to work on than the 2.5l, 2.4l, 4.0i, and 4,2L. And are more optimized for street driving (the decision to use a v motor instead of an inline motor)  the level of difficulty of working on the vehicle is also higher, especially some of the body work when compared to my TJ. Everything on my TJ is straight up bolt on and can come off on it's own, but on my mom's jeep for example I'm going to have to take off her grill and frame guard to even get to change her front bumper. You also have electronic traction/handling control (like an FJ). The list goes on dude, that's why the new jeeps are so expensive to buy and modify. I like them, but I'll only get one used or if the price drops considerably.
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Offline chrisfranklin

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Re: Pentastar JK
« Reply #11 on: August 28, 2011, 08:19:07 PM »
The traction/stability deal has got to be a pull-the-fuse type deal, maybe same for computer-controlled climate control.  Even so, if the computerized stuff is sealed up, it can last.   It might be a long way from state-of-the-art in a few years, but it'll probably still work. 

Body panel thickness: Mine looks at a rock and it gets a dent, so guess the JKs get it worse than that. 
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor

RT

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Re: Pentastar JK
« Reply #12 on: August 28, 2011, 08:29:54 PM »
It's more of a cost and complexity thing than a taste thing. JK's are in no way fake jeeps, just hard and expensive to work on.
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Torch_Ind

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Re: Pentastar JK
« Reply #13 on: August 28, 2011, 08:55:03 PM »
Quote from: RT on August 28, 2011, 08:29:54 PM
It's more of a cost and complexity thing than a taste thing. JK's are in no way fake jeeps, just hard and expensive to work on.

 :thumb:
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Offline chrisfranklin

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Re: Pentastar JK
« Reply #14 on: August 29, 2011, 12:33:14 AM »
Ok, so it's complicated. 

Pentastar did apparently win a little engineering regards from Wards:

http://wardsauto.com/reports/2011/tenbest/chrysler/index.html

http://wardsautoworld.com/ar/auto_versatility_nvh_hallmarks/

This is kind of surprising me: 

http://www.autoblog.com/2011/06/09/maserati-getting-twin-turbo-pentastar-v6/

“The Jeep is America's only real sports car.” - Enzo Ferrari.  ...Don't think even He would have ever expected a new Maserati sedan and a new Jeep to be shipping with variations of the same power-plant.  :eek:  :lol:
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'94 YJ S 5spd, Borla Exhaust, CarSound Cat., PS Ceramic-coated Headers, Airraid intake, 62mm TB, Intake Manifold bored/ceramic-coated, 19lb injectors, Sharp's Adj. FPR, MeanGreen Starter, D30 Aussie locker, 31" Destination MTs, Warn XD9000, Cibie headlights, armor
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