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Unread 03-25-2013, 10:15 PM   #16
2jhanna
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Quote:
Originally Posted by 32vld View Post
Braking is the same, steering same. Now with those 3.21's if you keep the trans out of 6 gear or OD going up hills you should still have power to tow 3,500 lbs.

My 05 TJU with 6 cyl and 3.42's rated to tow 3,500.
I tend to agree, (and I haven't done the math) if you don't use OD (manual or auto) the net gearing should be close to 3.73.

32vid- your `05 LJ should have 3.73 gears.

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Unread 03-26-2013, 12:17 AM   #17
OCS12
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I'd be shocked to think an unlimited JK couldn't handle that little pop up. Granted, I don't hit the highway with this, but my little 3.07 geared TJ can tow this fella around easily.
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Unread 03-26-2013, 06:02 AM   #18
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Quote:
Originally Posted by 2jhanna View Post
I tend to agree, (and I haven't done the math) if you don't use OD (manual or auto) the net gearing should be close to 3.73.

32vid- your `05 LJ should have 3.73 gears.
That should pretty much do it. I wouldn't tow a heavy trailer with that setup but a camper should be fine.
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Unread 03-26-2013, 06:10 AM   #19
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Quote:
Originally Posted by OCS12 View Post
I'd be shocked to think an unlimited JK couldn't handle that little pop up. Granted, I don't hit the highway with this, but my little 3.07 geared TJ can tow this fella around easily.
Nice rollbar
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Unread 03-26-2013, 06:12 AM   #20
Prot
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Do you have a two door or a four door. If you read the specifications, the four door has a 3,500 pound towing capacity. Wheelbase is a big factor, not just power or gearing.

If you bought a two door, trade it in for a four.

$3,000 to regearing? What kind of shop quoted you that? Regearing normally is around $1,300.

FWIW, my 2007 Sahara came with 4.10 gears from the factory. On these newer models, you can only get 4.10 from the factory in a Rubicon. When I went to 35's, I had it regeared to 5.13 a few months later.
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Unread 03-26-2013, 07:07 AM   #21
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@Prot : I have a 4 doors sahara. I took my info from the user manual : http://www.jeep.com/download/pdf/ug/...ler-UG-1st.pdf : Page 51, 1st line. The 3000$ regearing cost is the price from two local chrysler dealer. I'm in Canada, maybe it's more expensive around here.

@32vld : So that means that if I stay in the 1st to 5th gear I would stay close to a 3.73 ratio and be okay?

Thanks everyone for your comments, it's really helping me dealing with this!
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Unread 03-26-2013, 07:17 AM   #22
bogleparsons
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I dont get it. My Xterra has 3.13 gear ratio and is rated for #5000
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Unread 03-26-2013, 07:20 AM   #23
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I don't get it too. When I say that I tow less than a mini cooper, it's the truth. A certain model of the mini cooper can tow 1400lbs.

Now I'm thinking about asking Chrysler directly to confirm me that my wrangler is limited to 1000lbs, there must be an error somewhere...
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Unread 03-26-2013, 08:09 AM   #24
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sounds like they just want as close to zero liability as they can get.
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Unread 03-26-2013, 08:32 AM   #25
2jhanna
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someone can correct/confirm my math and/or logic, but my thinking...

given a NSG370 6 speed manual with a 1.0 5th gear ratio and a 0.84 6th gear ratio.

a 3.21 rear axle gearing running in 5th tranny gear, should be net equivalent torque as 3.82 rear axle gearing, vs running in 6th gear.

or am I "way off base" in my logic ???
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Unread 03-26-2013, 09:16 AM   #26
Filthy-Beast
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Quote:
Originally Posted by bogleparsons View Post
I dont get it. My Xterra has 3.13 gear ratio and is rated for #5000
Not the same at all. You have to also take into account transmission gear ratios, tire size, wheelbase, brakes.

Quote:
Originally Posted by fchabot View Post
A certain model of the mini cooper can tow 1400lbs.
with the proper gear ratios.

The manual has to cover you pulling 3500#on any road, think rocky mountains. Maintain full capabilities, like the use of overdrive on flat roads. It's simple they do not want to warranty a vehicle that is pulling 3500# with 3.21 gears. They'd have a bunch of people complaining about performance, loss of gears and gas mileage. Just like my F150 can pull a lot more with 3.73 gears than it can with 3.21 gears.

the JKU should not be sold with 3.21 gears, but by doing so they increase the fleets CAFE average ratings and get consumers who actual compare gas mileage ratings before buying a square box to drive down the highway at 70.
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[B][URL="http://www.jeepforum.com/forum/f22/beast-2-build-13-jkur-1460311/"]13 JKUR Build thread[/URL][/B]

[COLOR="red"][B]For Sale:[/B][/COLOR] [URL="http://www.jeepforum.com/forum/f129/jk-4dr-black-painted-hard-top-1000-a-1541186/"][COLOR="Blue"]2013 4dr JK Painted black Hard Top[/COLOR][/URL] [URL="http://www.jeepforum.com/forum/f127/jkur-18-59-springs-shocks-1557427/"][COLOR="Purple"]JKUR 18/59 springs and shocks[/COLOR][/URL]

[SIZE="1"][B]97 TJ:[/B] daughter 1 - 2.5L, Auto, 2" BB, 31" GY Duratrac
[B]98 TJ:[/B] Daugher 2 - 4.0L, 5spd, D44 rear
[B]06 LJ Rubicon:[/B] mine - Rokmen full up-armor, 8 adjustable CAs, front bumper, sliders, corners, Shrockworks rear bumper, 3" AEV/BDS lift, Currie HD stearing and Antirock, MT/r - k 35x12.5, SuperWinch, MC Overlines, York OBA
[B]13 JKU Rubicon:[/B] Wife's for now, Ace Rock rails & rear bumper tire carrier, Truck Lites, MC Game changer 3.5 lift, RR skids, PSC Brawler front bumper, Warn 9.5cti-s, 35" GY MTRs[/SIZE]
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Unread 03-26-2013, 09:22 AM   #27
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Im with the guy.....why does Jeep should'nt pop out crappy cars? Example: 2 wheel drives or AWD WK with a crappy low powered engine.

When you buy a Jeep, there are certain expectancies. Jeep keeps lowering the bar. That is why I sold my 2006 and bought a 1996.
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Unread 03-26-2013, 09:31 AM   #28
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Quote:
Originally Posted by misfit77 View Post
...When you buy a Jeep, there are certain expectancies....
Yeah, like 20 mpg and plenty of room for soccer balls!
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[B][URL="http://www.jeepforum.com/forum/f22/beast-2-build-13-jkur-1460311/"]13 JKUR Build thread[/URL][/B]

[COLOR="red"][B]For Sale:[/B][/COLOR] [URL="http://www.jeepforum.com/forum/f129/jk-4dr-black-painted-hard-top-1000-a-1541186/"][COLOR="Blue"]2013 4dr JK Painted black Hard Top[/COLOR][/URL] [URL="http://www.jeepforum.com/forum/f127/jkur-18-59-springs-shocks-1557427/"][COLOR="Purple"]JKUR 18/59 springs and shocks[/COLOR][/URL]

[SIZE="1"][B]97 TJ:[/B] daughter 1 - 2.5L, Auto, 2" BB, 31" GY Duratrac
[B]98 TJ:[/B] Daugher 2 - 4.0L, 5spd, D44 rear
[B]06 LJ Rubicon:[/B] mine - Rokmen full up-armor, 8 adjustable CAs, front bumper, sliders, corners, Shrockworks rear bumper, 3" AEV/BDS lift, Currie HD stearing and Antirock, MT/r - k 35x12.5, SuperWinch, MC Overlines, York OBA
[B]13 JKU Rubicon:[/B] Wife's for now, Ace Rock rails & rear bumper tire carrier, Truck Lites, MC Game changer 3.5 lift, RR skids, PSC Brawler front bumper, Warn 9.5cti-s, 35" GY MTRs[/SIZE]
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Unread 03-26-2013, 10:11 AM   #29
VBRubicon
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Quote:
Originally Posted by misfit77 View Post
Im with the guy.....why does Jeep should'nt pop out crappy cars? Example: 2 wheel drives or AWD WK with a crappy low powered engine.

When you buy a Jeep, there are certain expectancies. Jeep keeps lowering the bar. That is why I sold my 2006 and bought a 1996.
Not sure if you've noticed but that phenomenon isn't strictly Jeep biased...

Something about decreasing quality, outsourcing, cheaper parts/labor in general that yield higher profit margins or some crazy **** of the sort.



What we need is James Cameron to raise the bar.

Eh? Eh? Anyone??
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Unread 03-26-2013, 10:29 AM   #30
jay-h
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Quote:
Originally Posted by 2jhanna View Post
someone can correct/confirm my math and/or logic, but my thinking...

given a NSG370 6 speed manual with a 1.0 5th gear ratio and a 0.84 6th gear ratio.

a 3.21 rear axle gearing running in 5th tranny gear, should be net equivalent torque as 3.82 rear axle gearing, vs running in 6th gear.

or am I "way off base" in my logic ???
You are correct
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