Re gearing a Jeep (who is the go to shop for swapping gearing in axles)?

[Brian]

Wow.
I could barely get my STOCK (2009) 4 door Rubicon up to 80mph on a flat road.

The pentastar (2012+) engine really made a difference for the 4door. First time I drove it it was like night and day.


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[Brian]

Cold air intakes are a GREAT way to suck water into your motor while doing a water crossing or puddle jumping.

Yep, that's why I haven't pulled the trigger. Considered a snorkel even at one point as another option.

If I only knew someone else with a heavy 2012+ who also has a lead foot that had done the swap to 4.88s or 5.13s I would feel better. Hate to spend all that cash and end up with a jeep that won't keep up with freeway traffic, or lost several mpg at speed. I have no doubt wheeling and mountain driving will be better, but I still drive it a lot around town too.


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[Jeffrey Lebowski]

The pentastar (2012+) engine really made a difference for the 4door. First time I drove it it was like night and day.

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Mine was such a dud. Always in the damn shop. Bought it new with the "lifetime" powertrain warranty, which was worthless.
It makes me sick, it was my 6th consecutive jeep… and last. (Edit: And other than 2 CTDs which were "extra" cars, I'd only owned jeep to that point, excluding my wife's cars and even she had one at one point).

But I have many friends who had great luck with JKs.

[newracer]

My 07 JKU Rubicon has plenty of power but it is totally stock.

[newracer]

Yep, that's why I haven't pulled the trigger. Considered a snorkel even at one point as another option.

If I only knew someone else with a heavy 2012+ who also has a lead foot that had done the swap to 4.88s or 5.13s I would feel better. Hate to spend all that cash and end up with a jeep that won't keep up with freeway traffic, or lost several mpg at speed. I have no doubt wheeling and mountain driving will be better, but I still drive it a lot around town too.


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Maybe a programmer would give you the little extra you are looking for.

[Brian]

Maybe a programmer would give you the little extra you are looking for.

That's a good point. My lift kit came with an AEV procal that helped out the tuning and speedo, etc. quite a bit but I don't think it can do as much as a superchips or something. I should look into that.

[Irving]

Unless things are different, I don't think "chips" do much for naturally aspirated vehicles compared to boosted ones.

[Jeffrey Lebowski]

My 07 JKU Rubicon has plenty of power but it is totally stock.

All mine had were neoprene seat covers and quadrabling floor mats.


Edit: Admittedly I'd hop in it after driving around in a 1 ton diesel, but still.
It wasn't horrible. I had a 4 cyl (lifted, locked, etc) YJ with a 3sp auto. That was horrible in CO.
I didn't really get the complaints some folks had about them in the mtns, we took it and it was fine.
But getting up to 80 or going "fast?" No. It was a very underpowered, but average SUV-ish sort of car.

[Brian]

All mine had were neoprene seat covers and quadrabling floor mats.


Edit: Admittedly I'd hop in it after driving around in a 1 ton diesel, but still.
It wasn't horrible. I had a 4 cyl (lifted, locked, etc) YJ with a 3sp auto. That was horrible in CO.
I didn't really get the complaints some folks had about them in the mtns, we took it and it was fine.
But getting up to 80 or going "fast?" No. It was a very underpowered, but average SUV-ish sort of car.

Don't tell my wife but I hit 95mph eastbound on 470 tonight coming home when I had the music cranked and I wasn't paying too much attention. Glad I didn't meet my friend with the flashy lights. Even with the heavy 37s and 4.5" lift, it was stable. Not that I'd recommend driving stupid though. Darn that long-haired rock and roll music.

[newracer]

It was the seat covers.

I agree they are not great but I don't think they are as bad as most people say. They are basically a heavy brick on 4 wheels.