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Old 03-02-2013, 11:13 PM   #91
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Quote:
Originally Posted by Apexeater View Post
Yeah, i'm not sure how the topic of minivans keeps coming up. Still there has been some great info on here.

I will have to drive one to see how it goes. I think it may work for what i want.
Yeah, some people seem to be fixated on mini vans, 1/4 mile times, 0-60, etc.

Yeah, try them out. If you’re gong to wheel it with 35s then you will need to re-gear an 07-11, but it may be hard to find a used re-geared one to test drive (unless you meet up with some that has done it already). With the automatic in 12+ you can probably get away with the stock 4.10s and 35s.

It all depends on the cash you have to spend on the entire package and the deals you can find out there.

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Old 03-02-2013, 11:21 PM   #92
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I love how some people can justify anything that they dont have as useless. I bet if your jeep only had 4HI you'd probably be in the camp that knocked on the 4LO saying it's pointless and you dont need that much power and torque on the trail. Throwing blanket statements is the worst thing you can do! Why wouldn't more power help on some trails???? Not everything is flat or muddy, sometimes you gotta climb mammoth hills and you need that power. And not everyone that wants a stronger engine is a boy racer that never sees the dirt! But hey, if power is so useless offroad, why dont you swap a neon engine in your rig, that way you can get good mileage on the trail too

Did I ever say more power was useless?

And
Ahhhh did someone get pissy? Trust me I have been up a hill or two. My jeep has only been in 4 high three times, and I know for a fact that there is way more to a rig then the motor.

But what do I know? Last month I was laying on my back at 1 in the morning puting in the third tranny in a week on a KOH rig that came in 14'th and I am laying in a hote room in College Sration Tx after a dirt riot race that the same rig came in Second. And guess what this rig only puts 285hp to the ground. There are a whole lot more rigs that make way more power out there coming in behind it.


I guess I am a damed fool because I am fixing to build a lightweight 4.8 rig over the next year also to run with 6.0s.


Point is, it is not all about the motor, and I never have said that having more power is a bad thing. But having more power does not make your jeep better unless you are going to drag race.


I have posted a pic or two on this forum of my rig riding around on the bunny slopes. Where are your pics?

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Old 03-02-2013, 11:29 PM   #93
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Originally Posted by joe002
Yeah, some people seem to be fixated on mini vans, 1/4 mile times, 0-60, etc.

Yeah, try them out. If you’re gong to wheel it with 35s then you will need to re-gear an 07-11, but it may be hard to find a used re-geared one to test drive (unless you meet up with some that has done it already). With the automatic in 12+ you can probably get away with the stock 4.10s and 35s.

It all depends on the cash you have to spend on the entire package and the deals you can find out there.
Im Running 35s on my 12, and have no plans to rehear until I go 37s, then I'll go with 4.88s. The jeep drives great with the stock 4.10s
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Old 03-02-2013, 11:30 PM   #94
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Oh and bloodfart you might want to read the whole thread.... especially the parts where I said people were closed minded and thank that whatever they have is the best there is.

And being in 4 low will not give you any more power.

And being in 4 low will also not give you more torque. You only have whatever the motor puts out - drive line loss.
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Old 03-02-2013, 11:37 PM   #95
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Im Running 35s on my 12, and have no plans to rehear until I go 37s, then I'll go with 4.88s. The jeep drives great with the stock 4.10s
Yeah, I've read/heard that you are OK, I just haven't driven one myself.

Some said that 4.10s and 35s would be OK in my '08, but after trying it that way for a while I wasn't happy with it. After putting on the 5.38s I'm happy.
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Old 03-02-2013, 11:40 PM   #96
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I put the 3.8 in my last Jeep through a 5 minute torture test and it passed with flying colors.
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Old 03-03-2013, 12:02 AM   #97
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Oh and bloodfart you might want to read the whole thread.... especially the parts where I said people were closed minded and thank that whatever they have is the best there is.

And being in 4 low will not give you any more power.

And being in 4 low will also not give you more torque. You only have whatever the motor puts out - drive line loss.
Oh and more power is a huge pluss in the mud. Not sure why someone who knows everything could get that one wrong.
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Old 03-03-2013, 04:11 AM   #98
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After many hours of driving the two (3.6 & 3.8) here is what I noticed:

My 2013 JK sport 6spd (Intake + Exhaust + 3.21 gears + 33" tires)

On road:

WOT, a lot faster but requires you to spin the engine, power is felt above 5000RPM.
Highway cruising in 6th gear is a PITA, there is just no power. I have to downshift to 5th and somtimes 4th just to get me going.

Offroad:

3.6 has a slight edge in the sand dunes because of the higher HP's.
3.6 tends to overheat quicker (dunes require power thus the tendancy to rev higher creates this)

Cousins 2010 JK Islander edition 6spd (Intake + Exhaust + 3.73 gears + Bully dog tune + stock tires)

On road:

WOT, slower and power tends to die up top.
Highway cruising is much better with usable power in 6th gear (may be due to 3.73's)
Feels it has more torque coming out of a stop and city driving (lower RPM's).

Offroad:

Better at keeping engine temps low.
Overall performance is very close.



I like my 3.6 better
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Old 03-03-2013, 11:11 AM   #99
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On the freeway sure it makes a difference but believe it or not lots of folks dont just drive there jeeps on the freeway.
Believe it or not but a lot of Jeep owners spend MORE time driving their Jeeps ON the road than OFF. I have yet to find a 23 mile unpaved trail from my driveway to my work parking lot, 28 miles away.

I believe I'd rather have a Jeep setup for where I drive it 99% of the time.
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Old 03-03-2013, 11:22 AM   #100
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Believe it or not but a lot of Jeep owners spend MORE time driving their Jeeps ON the road than OFF. I have yet to find a 23 mile unpaved trail from my driveway to my work parking lot, 28 miles away.

I believe I'd rather have a Jeep setup for where I drive it 99% of the time.
Did you read the whole thread?
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Old 03-03-2013, 11:30 AM   #101
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I think many (most?) Jeep owners use their Jeep as a car. They need a DD and want to use the Jeep for it - no problem. For them, things like: MPG, 0-60, 1/4 mile, looks, etc. may be the most important part of the Jeep.

Some Jeep owners got their Jeep to take it off-road. I’ve been able to buy a car for my DD and we use the Jeep to go off-road. For off-roading other things are more important: clearance, armor, gearing, suspension, etc. It also depends on the type of off-roading you do. Out here in AZ it’s typically dry and rocky, so we have our Jeep setup for crawling over rocks. If you do sand or mud then you may want/need a different setup. You obviously have to drive on a road to get to the trails, but unlike driving to work when you’re wheeling you typically go with a group and your need to use high acceleration and worry about MPG improvements is limited as you are running with a group of Jeeps not a Corvette club.
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Old 03-03-2013, 12:11 PM   #102
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I would say 90% of the folks here are using their JK as a DD. Not too many folks can afford to make a dedicated trail rig out of a new $30k Jeep.So yea the power of the 3.6 is very useful and does come in to play for most .
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Old 03-03-2013, 02:30 PM   #103
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Seems you had your mind made up all along, just needed confirmation.
Not at all, I started this topic with the thought that I should avoid the 3.8. Now after getting some good information from people who paid attention to my stated goals and what the question really was I now have some options. Some of those options have inherent pluses and minus's, that is up to me to determine which is the better route. And you are right, it is all good.

What I have gathered from this topic is:
3.8 is a fair engine for the road but has some limitations. But for the trail it is more than capable but may need re-gearing depending on tire size.

3.6 is the stronger, faster engine, with the better tranny but has it's own problems (head issue, additional cost).
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Old 03-03-2013, 02:33 PM   #104
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^^^ sounds about right
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Old 03-03-2013, 03:19 PM   #105
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As usual, a very entertaining thread. I drove both and opted for the 3.6. Both were IMO capable but once you add in the full warranty and the new car smell the 2013 seemed like the smart choice.

Best of luck to ya.
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Old 03-03-2013, 03:22 PM   #106
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^^^ sounds about right
+1
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Old 03-03-2013, 03:46 PM   #107
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OP, for what you will be doing, I would think the "package" would be more important than the engine/tranny. For example, a 3.8 Rubicon in a color you love and with the features and price you want would be better than a 3.6 Sport in a color and price you don't love.

This is exactly why I bought my '10 JKU Islander: I think the interior is more "Jeepy," I was able to save about $3k over a Sport while getting more features (dual top/upgraded audio/Islander package/tow, etc.), and I love the color.

When it came down to it, the performance of the 3.6 over the 3.8 was not worth the other stuff.

Good luck!

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Old 03-03-2013, 11:32 PM   #108
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can't we all just get along the 4.0 has so far proven to be the most reliable Engine yet & the 3.8 not to shaby it's self but not perfect I hope the 3.6 will be the most reliable one yet because it has the best power but it sure got a sh£#^y start on reliability only time will tell shoot if your not happy with what you have you can drop a LSX in it or a Hemi whatever
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Old 03-04-2013, 10:07 AM   #109
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Lower gears would really help with 6th on the freeway and driving in general. I am sure you know that but just in case . . .

NC


Quote:
Originally Posted by Moha View Post
After many hours of driving the two (3.6 & 3.8) here is what I noticed:

My 2013 JK sport 6spd (Intake + Exhaust + 3.21 gears + 33" tires)

On road:

WOT, a lot faster but requires you to spin the engine, power is felt above 5000RPM.
Highway cruising in 6th gear is a PITA, there is just no power. I have to downshift to 5th and somtimes 4th just to get me going.

Offroad:

3.6 has a slight edge in the sand dunes because of the higher HP's.
3.6 tends to overheat quicker (dunes require power thus the tendancy to rev higher creates this)

Cousins 2010 JK Islander edition 6spd (Intake + Exhaust + 3.73 gears + Bully dog tune + stock tires)

On road:

WOT, slower and power tends to die up top.
Highway cruising is much better with usable power in 6th gear (may be due to 3.73's)
Feels it has more torque coming out of a stop and city driving (lower RPM's).

Offroad:

Better at keeping engine temps low.
Overall performance is very close.



I like my 3.6 better

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