Ring And Pinion Tooth Count Chart

Gear ratio and tire diameter charts are ideal for making your car as efficient as possible.

Ring and pinion tooth count chart.

It may be necessary to run an engineering tap to chase the threads to clean. When ration is 3 0 the car uses ring and pinion teeth at 39 and 13 respectively. You should be able to find your gear ratio listed on the axle tag however if that has gone missing you can simply count the number of teeth on each gear and divide the number of ring gear teeth by the number of pinion gear teeth. The following table contains a list of common axles along with their ring and pinion tooth count and ratios.

Dividing the ring gear tooth count by the pinion tooth count e g ring gear tooth count 35t pinion gear tooth count 10t. Count the number of teeth on the pinion gear and count the number of teeth on the ring gear. The biggest ration is 6 0 that have pinion teeth 5 and the ring teeth are 30. This ring and pinion does share some components and can be adapted into an earlier dana 44 but requires some work different bearings and spacers.

The result is your gear ratio exa. Axle ring gear teeth. Automatic transmission rpms tend to be a little higher and transmissions with an overdrive tend to be a little lower. Divide the ring gear tooth count by the pinion tooth count to get your ratio.

It was typically used in the back of jeep jks isuzus and nissan pickups. A good way to calculate this is to multiply 12 by your jeeps tire diameter example. You will notice that while many of them are identical a few have a different number of teeth on each gear that results in a minor shift up or down in the final gear ratio. This ring and pinion is significantly stronger with a better pinion to ring gear tooth contact patch and angle.

Many differential cases have many thousands of miles of service. Check all threads in the case for wear. This type of ratio is referred to as non hunting because any given pinion tooth always contacts the same three ring gear teeth per revolution. 12 x 38 4 56.

The ratio consists of several numbers between 2 73 and 6 00 that you see on chart. Ring gear teeth pinion gear teeth 41 11 3 73. Gear ratio and tire size calculator 4x4 and jeep ring pinion when you change your tire size you need to make sure you have the right gearing to get optimal fuel economy and power. The ford 9 inch axle came from the factory with ratios that are whole numbers such as 3 0 1 which was achieved with a 39 tooth ring gear meshing with a 13 tooth pinion gear.