Sold the rubi !
JK Freak
Joined: Feb 2011
Posts: 849
Likes: 0
From: Long Island, NY
Thread Starter
JK Enthusiast
Joined: Jul 2012
Posts: 131
Likes: 0
From: Michigan
I admit I liked the jeep but it started ticking and the 3.6 makes me nervous I don't have time to deal with motor issues . So to respond to comet hope there's a jeep around to pull me out , hope its running 
JK Junkie
Joined: Dec 2012
Posts: 2,203
Likes: 4
From: Jacksonville NC
You will be back.. Can't take the top and doors off a pickup. I know because I had a Colorado with a 6" Rancho suspension lift with 35's.
I have a 3.6L no problems at all. Unless you have a 2012 I would not worrie about the head issue.
I have a 3.6L no problems at all. Unless you have a 2012 I would not worrie about the head issue.
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Joined: Jun 2011
Posts: 11,054
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From: Hendersonville, Tennessee
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JK Junkie
Joined: Nov 2007
Posts: 2,192
Likes: 2
From: SoCal
Just My Old School Training How Can Plastic Be A Classic ?
The Pentastar 3.6 liter V6 engine
The Pentastar engines have an open deck design, the open deck makes manufacturing cheaper, at the cost of upper cylinder support, which in turn allows Block Harmonics, that high-pressure die cast aluminum design don't like, movement of aluminum no matter how small (equals fatigue).
Oil pressure and temperature sensors are on the oil filter housing assembly, which is mounted on top, between the heads; the oil cooler (a plate-style coolant to oil heat exchanger) is mounted to the oil filter housing. Three piston oil cooler jets are mounted to the engine block (each cools two pistons) and attached to the main oil gallery. Oil cooling is a necessity for the pentastar engine and Chrysler missed the mark by not understanding what the Jeep does when on the trail, it collects all sorts of debris, from dusty dirt to mud and what ever the engine compartment can collect, restricting or clogging the oil cooler and heads, creating heat build up ( heat build up equals fatigue )
The cylinder heads are made of aluminum, with unique left and right castings and integrated exhaust manifolds. The valves have pressed-in powdered metal guides, which are not serviceable. The integrated exhaust manifold doesn’t allow air cooling (external exhaust manifolds allows cooling by air flow cooling the manifold and head )
For me this doesn’t fit the Jeep application at all, unless your going to buy one every 4 to 6 years, which big business has lead this country into believing.
The Jeep owner mods the vehicle to their liking (at their expense) and who wants to do this every 4 or 6 years. Chrysler has missed the mark of understanding a jeepers personality, a Jeep is part of the their family something they don't trade in.
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The Pentastar 3.6 liter V6 engine
The Pentastar engines have an open deck design, the open deck makes manufacturing cheaper, at the cost of upper cylinder support, which in turn allows Block Harmonics, that high-pressure die cast aluminum design don't like, movement of aluminum no matter how small (equals fatigue).
Oil pressure and temperature sensors are on the oil filter housing assembly, which is mounted on top, between the heads; the oil cooler (a plate-style coolant to oil heat exchanger) is mounted to the oil filter housing. Three piston oil cooler jets are mounted to the engine block (each cools two pistons) and attached to the main oil gallery. Oil cooling is a necessity for the pentastar engine and Chrysler missed the mark by not understanding what the Jeep does when on the trail, it collects all sorts of debris, from dusty dirt to mud and what ever the engine compartment can collect, restricting or clogging the oil cooler and heads, creating heat build up ( heat build up equals fatigue )
The cylinder heads are made of aluminum, with unique left and right castings and integrated exhaust manifolds. The valves have pressed-in powdered metal guides, which are not serviceable. The integrated exhaust manifold doesn’t allow air cooling (external exhaust manifolds allows cooling by air flow cooling the manifold and head )
For me this doesn’t fit the Jeep application at all, unless your going to buy one every 4 to 6 years, which big business has lead this country into believing.
The Jeep owner mods the vehicle to their liking (at their expense) and who wants to do this every 4 or 6 years. Chrysler has missed the mark of understanding a jeepers personality, a Jeep is part of the their family something they don't trade in.
33
JK Super Freak
Joined: Jun 2011
Posts: 1,435
Likes: 2
From: south carolina
i really hope the issues with this engine are resolved , the open deck design is , in my mind , just crazy for higher hp applications . for honda civics maybe , but what do i know im not an engineer . the integrated head manifold design is another with heat transfer being inhibited . ill keep my 3.8 , rugged , simple and slow as hell. cannot understand putting a dohc vvt all aluminum engine in what is considered the premier off road vehicle . these things should be briggs and stratton simple
JK Super Freak
Joined: Mar 2010
Posts: 1,182
Likes: 0
From: Ontario Canada
Just My Old School Training How Can Plastic Be A Classic ?
The Pentastar 3.6 liter V6 engine
The Pentastar engines have an open deck design, the open deck makes manufacturing cheaper, at the cost of upper cylinder support, which in turn allows Block Harmonics, that high-pressure die cast aluminum design don't like, movement of aluminum no matter how small (equals fatigue).
Oil pressure and temperature sensors are on the oil filter housing assembly, which is mounted on top, between the heads; the oil cooler (a plate-style coolant to oil heat exchanger) is mounted to the oil filter housing. Three piston oil cooler jets are mounted to the engine block (each cools two pistons) and attached to the main oil gallery. Oil cooling is a necessity for the pentastar engine and Chrysler missed the mark by not understanding what the Jeep does when on the trail, it collects all sorts of debris, from dusty dirt to mud and what ever the engine compartment can collect, restricting or clogging the oil cooler and heads, creating heat build up ( heat build up equals fatigue )
The cylinder heads are made of aluminum, with unique left and right castings and integrated exhaust manifolds. The valves have pressed-in powdered metal guides, which are not serviceable. The integrated exhaust manifold doesn’t allow air cooling (external exhaust manifolds allows cooling by air flow cooling the manifold and head )
For me this doesn’t fit the Jeep application at all, unless your going to buy one every 4 to 6 years, which big business has lead this country into believing.
The Jeep owner mods the vehicle to their liking (at their expense) and who wants to do this every 4 or 6 years. Chrysler has missed the mark of understanding a jeepers personality, a Jeep is part of the their family something they don't trade in.
33
The Pentastar 3.6 liter V6 engine
The Pentastar engines have an open deck design, the open deck makes manufacturing cheaper, at the cost of upper cylinder support, which in turn allows Block Harmonics, that high-pressure die cast aluminum design don't like, movement of aluminum no matter how small (equals fatigue).
Oil pressure and temperature sensors are on the oil filter housing assembly, which is mounted on top, between the heads; the oil cooler (a plate-style coolant to oil heat exchanger) is mounted to the oil filter housing. Three piston oil cooler jets are mounted to the engine block (each cools two pistons) and attached to the main oil gallery. Oil cooling is a necessity for the pentastar engine and Chrysler missed the mark by not understanding what the Jeep does when on the trail, it collects all sorts of debris, from dusty dirt to mud and what ever the engine compartment can collect, restricting or clogging the oil cooler and heads, creating heat build up ( heat build up equals fatigue )
The cylinder heads are made of aluminum, with unique left and right castings and integrated exhaust manifolds. The valves have pressed-in powdered metal guides, which are not serviceable. The integrated exhaust manifold doesn’t allow air cooling (external exhaust manifolds allows cooling by air flow cooling the manifold and head )
For me this doesn’t fit the Jeep application at all, unless your going to buy one every 4 to 6 years, which big business has lead this country into believing.
The Jeep owner mods the vehicle to their liking (at their expense) and who wants to do this every 4 or 6 years. Chrysler has missed the mark of understanding a jeepers personality, a Jeep is part of the their family something they don't trade in.
33
^^the statement on Jeeps are part of the family is so true and no other vehicle I have owned has ever shared this. I too will hand on to my 3.8 as long as I can and then some
Had no idea of this open deck design.... Cool more to read up on.
Cheers