What are the stock axles on a Jeep YJ?
Identifying the axles in YJs is pretty simple since there were no options for it. Every YJ came with a Dana 30 up front and a Dana 35 in the rear. TJ Wranglers will have either a Dana 30 in the front and a Dana 35 in the rear unless you have a Rubicon model. In which case you’ll have 44s front and back.
What’s the gear ratio on a Honda Wrangler?
Some of the possible ratios include 3.07, 3.55, 3.73, and 4.10. Wranglers that are equipped with the Rubicon package typically come with the 4.10 gear set in their Dana 44 axles. The chart below shows the relationship between gear ratios and tire size.
What happens when you change gears on a wrangler?
Your Wrangler’s gear ratio has an affect on how much torque and horsepower is available to you across the RPM band. Changing your gears shifts the power band forward or backwards, and can compensate for modifications like larger tires. What Does a New Set of Gears Do?
Do you need ring and pinion gears on Wrangler?
Unless you’re familiar with wrenching on your Wrangler (more than oil changes and filter swaps), we highly recommend bringing your Jeep to a professional to have ring and pinion gears installed. What follows is a simplified version of how to install gears in your Jeep.
When do you need to upgrade a wrangler differential?
Certain differentials can only accommodate certain size ring gears. Generally, the higher numerically you go in gears, the bigger the ring gear. Should you need to upgrade the differential’s carrier, this is the time to decide if you want to upgrade to lockers.
When do you change the gear ratio on a jeep?
When you change tires on your Jeep from the stock size to the larger tires to give your lifted Jeep the look you want, a change in gear ratio is necessary to give you the optimum power ratio. There is a direct correlation between tire size and the gear ratio. Here is a chart that shows optimal gear ratios for lifted Jeeps with larger tires.
What kind of gear set does a Wrangler have?
Wranglers that are equipped with the Rubicon package typically come with the 4.10 gear set in their Dana 44 axles. The chart below shows the relationship between gear ratios and tire size. The numbers across the top are gear ratios, the numbers down the left side are tire sizes in inches, and the 4 digit numbers in the white boxes show RPM.
What should I change in my Jeep Wrangler?
Depending on how you use your Jeep, you may want to consider changing out your differential’s ring and pinion gears for a set more appropriate to your build. Whether you need the MPGs or the horsepower, and new set of gears can change the attitude of your rig.
How do you calculate tire and gear ratio?
A basic method to calculate is to mutiply .12 by your tire diameter. (.12 X 38″ = 4.56) The below table can be used to get a rough idea on gear ratios. The colors represent ideal RPM’s at highway speeds (65).