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Gears and Lockers


This is a discussion on Gears and Lockers within the TJ Forum forums, part of the Wrangler Forum category!
Originally Posted by gixxerphil hey freak check this out hope it helps. Jeep Ratio Calculators Your chart is generic and ...


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Old 06-13-2010, 05:05 PM   #11 (permalink)
 
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Originally Posted by gixxerphil View Post
hey freak check this out hope it helps.
Jeep Ratio Calculators
Your chart is generic and not accurate for all vehicles. I could not find what vehicle your chart pertains to. When considering gears, the chart needs to be vehicle specific with the correct engine, transmission, tire size and speed taken into consideration.

I know we're talking TJ's in this thread, but check out your chart and compare it to the JK specific charts, one automatic and the other manual. Use my JK with a 3.8L engine, manual transmission, 33" tire size and the 4.56 gears as an example to see the differences. Also note the performance difference between gears as shown in the chart I posted and the one you posted.

The generic non vehicle specific chart....



The JK specific chart showing both the auto and manual....


Note: If your chart is for the TJ, I apologize... but it still needs to show the 2.5L and the 4.0L engine as well as being an auto or manual.


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Last edited by AZ Outlaws; 06-14-2010 at 06:03 PM.
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Old 06-14-2010, 05:08 PM   #12 (permalink)
 
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I wouldn't reccomend any thing other than a selectable locker for the front if you see any snow or rain where you are, in a short wheelbase they can get kinda squirrelly when they suddenly lock or unlock on you, not worth saving a few bucks IMO.
Stick with the 4:88's unless you plan on going to a larger tire in your near future, you will be much happier on & off road!
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Old 06-14-2010, 05:58 PM   #13 (permalink)
 
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I'm running 33's on my JK and just regeared from 3.21 to 4.56 and couldn't be happier. Just right both on and off road... a very good compromise.


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Old 06-15-2010, 12:20 AM   #14 (permalink)
 
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either 4.56 or 4.11 is probably best for said application.
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Old 06-30-2010, 09:23 PM   #15 (permalink)
 
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Originally Posted by CT99XJ View Post
either 4.56 or 4.11 is probably best for said application.
I had 4.10's with 33's in my TJ, sucked IMO. With the 35's the OP posted I think even 4.56's wouldn't be to fun.


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Old 06-30-2010, 09:57 PM   #16 (permalink)
 
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i have a powertrax locker in my 500HP chevelle and i give it hell all the time and still works great. my ASE master certified technition automotive teacher has run them on the paved and dirt track putting hellashious power to them and hasnt let them down. they use this material thats like 70% stronger than titanium or something. they are pricy though. but you should research them and watch the videos
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Old 07-01-2010, 12:48 PM   #17 (permalink)
 
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x2 on Powertrax. Full carrier lockers are too pricey.

As to the gears, someone mentioned 4.10 sucked with 33's... It all depends on what you're doing with the vehicle. You can do swimmingly offroad with 5.38 to give you that little extra bit of power, but the pinion will be the size of a pea compared to 4.10 or 4.11. 4.56 is also a good offroad gear, but if the vehicle gets daily driven a lot, the gas mileage will not be great and the engine RPMs will be too high for constant throttle.

To prove the point, here's some numbers from some rigs in my local club:

5.13's with 33's: 2800rpm @65mph

4.56's with 33's: 2600rpm @65mph

4.11's with 33's: 2300rpm @65mph

3.55's with 33's: 1950rpm @75mph


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Old 07-07-2010, 07:27 PM   #18 (permalink)
 
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Don't fall for the hype "70% stronger than titanium",
titanium is only marginally stronger than A5 plate & weaker than stainless, it's benefit is strength to weight ratio.
Don't get me wrong, powertrax is a great unit but not bulletproof, seen several exploded into junk metal, and anyone who has installed one knows they are not light, it's a pretty substantial chunk of alloy, it's just a marketing gimmick to make it sound indestructible.
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Old 07-07-2010, 08:50 PM   #19 (permalink)
 
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^--- that. However, they're really durable.


As long as they're not in a Turdy-Five


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Old 09-02-2010, 12:28 PM   #20 (permalink)
 
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To answer your question properly one needs more details:
1. Tire size intended to be used.
2. DD or Trail rig.
3. You gonna keep these axles or you gonna upgrade some day.
General thoughts:
As stated, selectable in the front.
Detroit/Spool in the rear.
"IF" you are gonna upgrade axles some time in the future, a winch may be a better buy right now. My .02


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