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Old 10-09-2011, 03:46 PM
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Engine performance mods for the 3.6...any idea as to timeline?

Just curious about 3.6 performance mods. Has anyone heard about programming, exhaust, superchargers coming out for the 3.6? An article I read recently about the engine design explained that headers won't be much of an improvment due to the configuration of the exhaust manifolds and heads...

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Old 10-09-2011, 04:14 PM   #2
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I read in either JP mag or Petersen's 4Wheel & Off-Road, I get both, that it will be easy for Chrysler to add a turbo to it, so it they do we could probably make that a mod too.

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Old 10-09-2011, 05:32 PM   #3
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I read in either JP mag or Petersen's 4Wheel & Off-Road, I get both, that it will be easy for Chrysler to add a turbo to it, so it they do we could probably make that a mod too.
Lol yeah i read that too. Coming from owning several turbocharged cars I would have to go ahead and say that would be slightly less than practical for offroad use. Trying to power over a big rock and the turbo starts to provide boost at exactly the Wong time lol. I could be wrong but I'll keep my turbos on the street.
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Old 10-09-2011, 06:06 PM   #4
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I didn't think about a turbo for off-road. You take your Jeep off-road!!!

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Old 10-09-2011, 07:46 PM   #5
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Originally Posted by mccarter1128 View Post
Just curious about 3.6 performance mods. Has anyone heard about programming, exhaust, superchargers coming out for the 3.6? An article I read recently about the engine design explained that headers won't be much of an improvment due to the configuration of the exhaust manifolds and heads...
I have 2012 JKU Rubicon automatic, I see no need for more power. That is reason why I bought the 3.6 with auto in the first place, it has more power than I need or want.
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Old 10-09-2011, 07:52 PM   #6
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Lol yeah i read that too. Coming from owning several turbocharged cars I would have to go ahead and say that would be slightly less than practical for offroad use. Trying to power over a big rock and the turbo starts to provide boost at exactly the Wong time lol. I could be wrong but I'll keep my turbos on the street.
there are a few rigs that use turbos off road. it is all about how it is set up.
on a performance car, power down low is useless, so they are set up for boost to kick in up high. so as long as it is set up properly, it will be golden for offroading
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Old 10-09-2011, 08:02 PM   #7
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there are a few rigs that use turbos off road. it is all about how it is set up.
on a performance car, power down low is useless, so they are set up for boost to kick in up high. so as long as it is set up properly, it will be golden for offroading
Gotcha. Yah my eagle talon has a big ol garett ball bearing turbo. She doesn't spool till about 4000 rpm,but pulls good till redline lol that's a small 2 liter though. I guess smaller turbo(s) could provide boost and better low end power much sooner on a larger engine.
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Old 10-09-2011, 09:36 PM   #8
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MORE power for the potent new 3.6?!?!? Dear God, lads... think of the children!
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Old 10-09-2011, 09:49 PM   #9
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there are a few rigs that use turbos off road. it is all about how it is set up.
on a performance car, power down low is useless, so they are set up for boost to kick in up high. so as long as it is set up properly, it will be golden for offroading

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Old 10-09-2011, 10:49 PM   #10
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MORE power for the potent new 3.6?!?!? Dear God, lads... think of the children!
That's funny!

I just tested a 12 out and was looking was looking for the Omg factor!

Not really,,,I could tell there was more,,but not tons. Not close to what I thought it would have been.

Then I got out and looked at the sticker,,,it had 3.21's....I have 3.73's..

Dis this dumb down the 12 ? From what I should have expected ?

Would a 12 with 3.73's make a bigger gain in power that I was expecting from my 2010 jeep?

I was very very impressed with the inside thou! Like the auto shifter too.

It's a very nice ride now,,,,but ya I was expecting the Omg factor.
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Old 10-10-2011, 12:48 AM   #11
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That's funny!

I just tested a 12 out and was looking was looking for the Omg factor!

Not really,,,I could tell there was more,,but not tons. Not close to what I thought it would have been.

Then I got out and looked at the sticker,,,it had 3.21's....I have 3.73's..

Dis this dumb down the 12 ? From what I should have expected ?

Would a 12 with 3.73's make a bigger gain in power that I was expecting from my 2010 jeep?

I was very very impressed with the inside thou! Like the auto shifter too.

It's a very nice ride now,,,,but ya I was expecting the Omg factor.
The Rubi stick-shift is stock with 4.10. That oughta do it for ya! The Rubi is the only model with Dana 44 f/r tho, so you may have to go aftermarket on the other models. Check with your dealer.
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Old 10-10-2011, 01:08 AM   #12
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Originally Posted by mccarter1128 View Post
Just curious about 3.6 performance mods. Has anyone heard about programming, exhaust, superchargers coming out for the 3.6? An article I read recently about the engine design explained that headers won't be much of an improvment due to the configuration of the exhaust manifolds and heads...
How about 420HP for a 3.2L version? That's with twin turbos, which you probably won't see in the Wrangler. The 'Phoenix' engine has been in development since 2006 and deployed in 2010, so the aftermarket should be on this engine already.

Go to pentastars dot com to get a better idea of what's coming. I would expect at least another year to find performance mods tuned for low-end offroad use tho.
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Old 10-10-2011, 09:56 AM   #13
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on a performance car, power down low is useless,

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Old 10-10-2011, 10:18 AM   #14
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Never thought about a turbo for the 3.6, only a positive displacement blower for rock crawling. However, this is a Wrangler not a dragster so yes, a small turbo which spools almost instantaneously makes a lot of sense (and shouldn't be very expensive). Gear it right with a great tune and that's a honey of a set up! Turbos can make HUGE torque down low if set up properly, many car companies have done this out of the box.
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Old 10-10-2011, 11:29 AM   #15
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ok, not useless, but you do see what im saying yes?
all those high reving imports dont need the low end grunt of a rock crawler, so are not set up to provide it.
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Old 10-10-2011, 11:38 AM   #16
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That's funny!

I just tested a 12 out and was looking was looking for the Omg factor!

Not really,,,I could tell there was more,,but not tons. Not close to what I thought it would have been.

Then I got out and looked at the sticker,,,it had 3.21's....I have 3.73's..

Dis this dumb down the 12 ? From what I should have expected ?

Would a 12 with 3.73's make a bigger gain in power that I was expecting from my 2010 jeep?

I was very very impressed with the inside thou! Like the auto shifter too.

It's a very nice ride now,,,,but ya I was expecting the Omg factor.
I'm considering a 2012 with 3.21's....mostly because of the highway fuel economy. However, I bet a Rubi with 4.10's would have given you a "wow" feel.
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Old 10-10-2011, 02:52 PM   #17
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No stick for me anymore,,, getting OLD!

My AFE drop in filter has a noticable gain in my wrangler. I just took it out and replaced the paper filter while I had a warrenty replacement,,just to be safe.

And I need to get the AFE back in.

I will do another test latter with 3.73's. However they had an Overland GC on the showroom with air suspenion!! WOW that was sharp. And they were having a big sale!

I told them get me outta my Wrangler, and into this for $30 more a month and I will do it!
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Old 10-10-2011, 03:32 PM   #18
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That's funny!

I just tested a 12 out and was looking was looking for the Omg factor!

Not really,,,I could tell there was more,,but not tons. Not close to what I thought it would have been.

Then I got out and looked at the sticker,,,it had 3.21's....I have 3.73's..

Dis this dumb down the 12 ? From what I should have expected ?

Would a 12 with 3.73's make a bigger gain in power that I was expecting from my 2010 jeep?

I was very very impressed with the inside thou! Like the auto shifter too.

It's a very nice ride now,,,,but ya I was expecting the Omg factor.
I did the same thing when I bought mine...drove both...seems pretty equal to me, whats the big deal??? Maybe its after break in, maybe I`m just driving mine harder than the demo, or maybe it was the gears but after driving my `12 for 6 weeks (and I did own an 07 Rubi for 3 years) the performance is much better, and noticibly better fuel mileage.
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Old 10-10-2011, 06:12 PM   #19
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ok, not useless, but you do see what im saying yes?
all those high reving imports dont need the low end grunt of a rock crawler, so are not set up to provide it.
Well, I had a 05 Subaru Forester XT, 5 speed, modded, ran low 13's. It would pull a 1.6 60" every time, due to a 4.44 final drive ratio and a quick spooling turbo. Pretty much everything had to run me down on the street, because it would hook and book with the AWD. It would run out of steam above 5500, but by that point, it didn't really matter too much. It was seriously one of the hardest launching cars I've ever owned, and I've had a bunch of quick cars. Bring it up to 4500 rpm, dump the clutch and make sure you're hard up against the seat.
My 55 Chevy runs a pretty healthy little small block. It will barely spin the tires out of the hole, but once it hits about 3500 rpm, it's GONE. It will trap 117mph in the 1/4, but it's a little lazy off a light.
So really, it depends where your particular car's strengths are. In a Jeep, torque is king.
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Old 10-10-2011, 07:56 PM   #20
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Never thought about a turbo for the 3.6, only a positive displacement blower for rock crawling. However, this is a Wrangler not a dragster so yes, a small turbo which spools almost instantaneously makes a lot of sense (and shouldn't be very expensive). Gear it right with a great tune and that's a honey of a set up! Turbos can make HUGE torque down low if set up properly, many car companies have done this out of the box.

The only problem with is that it can hurt performance up top because the turbo starts to loose PSI due to the CFM output of the turbo being lower than the CFM intake of the motor. Perfect example is Evo x (which I owned and auto-x solo) Full boost to 25psi and bleeded off to 21-19psi by redline depending on weather.
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Old 10-10-2011, 09:34 PM   #21
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The only problem with is that it can hurt performance up top because the turbo starts to loose PSI due to the CFM output of the turbo being lower than the CFM intake of the motor. Perfect example is Evo x (which I owned and auto-x solo) Full boost to 25psi and bleeded off to 21-19psi by redline depending on weather.
The concern is for low end anyway, moot point.
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Old 10-10-2011, 10:57 PM   #22
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Never thought about a turbo for the 3.6, only a positive displacement blower for rock crawling. However, this is a Wrangler not a dragster so yes, a small turbo which spools almost instantaneously makes a lot of sense (and shouldn't be very expensive). Gear it right with a great tune and that's a honey of a set up! Turbos can make HUGE torque down low if set up properly, many car companies have done this out of the box.
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The concern is for low end anyway, moot point.

It still negatively effects the motor even being down low. Point I'm making is need to have a turbo that will not choke the motor at any rpm or load range. You also don't want to generate too much tq too quickly its a balancing act.

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