regearing question(s)
08-29-2009, 05:54 PM
#31
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A 6 speed, at 1100 feet above sea level, with 3.73s, you will loose some rear wheel horsepower with the lower rpms from running 32s, but the lower chart applies to you.
So you'd go from 2500 rpms at 70 mph to 2300 rpms. Not the end of the world. It won't be great in windy situations or if you tow anything. It wouldn't be that great at higher elevations (i.e. Colorado or Montana). You would just rarely use 6th gear anymore if that were the case.
So you'd go from 2500 rpms at 70 mph to 2300 rpms. Not the end of the world. It won't be great in windy situations or if you tow anything. It wouldn't be that great at higher elevations (i.e. Colorado or Montana). You would just rarely use 6th gear anymore if that were the case.
I do have to grab 5th as it is now on occassion going up slight grades when towing 1500-2000lbs anyway at 70mph.
Now if I do put rubi wheels on, and it drops my rpm's to 2300 at 70mph, without towing...will I see a touch of gas milage increase or decrease???
With less RPM's you would think better gas milage but maybe the rubi BFG MT tires don't roll as well and the wheels n tires are heavier. Hummmm. Overthinking but I'm anal, and like to know & understand details.
I might go with a custom wheel 16 x 8, then put on 265/75/16's for 31.7 tall or 235/85/ 16 for 31.6 tall. Not quite a 32' but I think a rubicon suspension sits a half inch or full inch taller so, I might be proportionally equivlent anyway to make my X sit almost like a factory rubi in a way
I guess then get a dealer to flash adjust the speedo with a few minutes of their time being wacked an hr labor.
09-04-2009, 03:35 PM
#32
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Got my new gears installed today and wow what a difference! It's like driving an entirely different vehicle. Much more torque. I am very pleased. I do not understand why they even offer the 3.21 ratio.
09-05-2009, 03:40 AM
#33
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I bet it's for gas mileage
Total speculation on my part, but it's the only rational explanation for the 3.21 I can think of.
09-05-2009, 03:43 AM
#34
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BTW Same here
09-05-2009, 03:44 AM
#35
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Yep, you are probably right.
The installer asked me if I wanted to take the 3.21s with me and I told him that I know I will never want them back and I cannot imagine anyone actually giving me money for them.
The installer asked me if I wanted to take the 3.21s with me and I told him that I know I will never want them back and I cannot imagine anyone actually giving me money for them.
09-05-2009, 03:55 AM
#36
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The gear chart on this thread is the best I've ever seen. Most of them leave several unnecessary variables like OD and transmission options.
It's so complete it's almost funny. I'd LOVE to have a rig that needed 7.17 gears. It wouldn't be a speed demon, but I bet I could crush locomotives with it!
It's so complete it's almost funny. I'd LOVE to have a rig that needed 7.17 gears.
It wouldn't be a speed demon, but I bet I could crush locomotives with it!
09-05-2009, 03:57 AM
#37
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Oh, and Robert, you asked me to post about the AEV Procal. Well, after getting my Jeep back from regearing, I drove it home, threw a few dip switches on the AEV, turned on the ignition, plugged the AEV in, horn beeped twice and speedometer was correct again. Yes, it is that simple.
The unit will let you change your axle ratio, tire size (from 24" to 54"), low tire pressure threshold (for the sensors), one touch lane change (tap you signal lever and it will make your turn signal blink three times), control your daytime running lamps by changing which lights are on or even turning them completely off
, turn on/off your auto sway bar system (if you have one), clear error codes, change engine idle speed, and center your steering wheel. Not bad for $130. It locks to your VIN the first time you use it and the only way to unlock it is to reset everything back to factory spec.
The unit will let you change your axle ratio, tire size (from 24" to 54"), low tire pressure threshold (for the sensors), one touch lane change (tap you signal lever and it will make your turn signal blink three times), control your daytime running lamps by changing which lights are on or even turning them completely off
, turn on/off your auto sway bar system (if you have one), clear error codes, change engine idle speed, and center your steering wheel. Not bad for $130. It locks to your VIN the first time you use it and the only way to unlock it is to reset everything back to factory spec.
09-05-2009, 02:27 PM
#39
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I'm running 4.56 gears with the stock 32" tires and love it. I will probably go with 33's next. I am at 2500 rpm in 6th at 60 mph. Lots of power in every gear now. !st gear is only useful if you are stopped. A slow rolling turn can be done in 2nd or 3rd easily. 6th gear will now accelerate uphill.
09-05-2009, 04:23 PM
#40
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Here is a list of the gear ratios that the AEV programmer will do:
3.07:1
3.21:1
3.55:1
3.73:1
4.10:1
4.56:1
4.88:1
5.13:1
5.38:1
5.67:1