How do I know what gear ratio I need?
To find the gear ratio, divide the big number by the little number. In the example to the left, 37 ÷ 12 = 3.083333. These are 3.08 gears.
How do you calculate ring and pinion gear ratio?
Count the number of teeth on the pinion gear and count the number of teeth on the ring gear. Divide the ring gear teeth number by the number of teeth on the pinion. The result is your gear ratio. Note: you may need to round off the number.
Will VIN number tell me gear ratio?
While it may be possible to derive information about an auto’s gearbox ratio from its VIN, that depends largely on the information the manufacturer includes in the vehicle descriptor section (VDS) of the VIN.
What is the best gear ratio for 1/4 mile?
A 4.10 gear would be your best bet to get because it will push the weight out of the hole and it would be easier to adjust your MPH with tire size.
What’s the difference between 4.10 and 3.73 gears?
4.10s are going to accelerate faster and decelerate faster on lift. However the trade off is greater fuel consumption per mile driven and higher engine speed per given road speed. In basic terms the 4.10s will feel quicker and 3.73 will feel faster.
What is a good gear ratio for highway driving?
For on-highway linehaul, the range tightens to a fuel friendly 2.26 through 3.42 for the most common ratios. “For on-highway, direct drive, it starts all the way down at 2.26 and up to 3.08 or larger,” Garrison says. “Getting into the mid- and upper-threes is starting to get more unusual these days.”
How do I know what rear gear ratio I have?
Turn the wheel TWO revolutions and count the number of driveshaft turns. The number of driveshaft rotations will help you determine your rear axle ratio. For example, if it turned 3 and a half times, it’s a 3.50:1 ratio. If it turned 4 and a quarter times, it’s a 4.25:1 ratio.
Can you replace just the pinion gear?
Yes. Ring and Pinion gears come in matched sets and must be replaced at the same time.
How do I know if my pinion gear is bad?
Regular “clunking” or loud “clicking” every few feet may indicate a broken ring or pinion gear tooth. “Banging, clicking or clunking” while cornering can be caused by broken cornering gears commonly called “spider gears”, lack of sufficient positraction lubrication, or worn positraction clutches.
Where does the pinion go on a Toyota 4×4?
If the CD is too short, the pinion sits too high in the case and rides more toward the toe of the ring gear. If the CD is too long, the pinion sits low and rides more toward the heel of the ring gear. Proper CD will allow the pinion to mate more evenly in the middle of the ring gear width for optimum mesh and strength.
How do you install ring gear on Toyota?
If needed, use your drift to tap on the teeth edge to spin the ring slightly to line up the bolt holes. Install two bolts snugly to hold the ring gear in place. Do not use the ring gear bolts to pull the ring gear onto the carrier.
How do you get bearings out of a Toyota gear swap?
Use a brass drift or steel punch in the middle of the pinion end to drive the pinion out of the housing. In some cases, the assembly will simply fall apart. In other cases, the bearings may be stubborn and you may need to resort to a press to lightly push the pinion out.
How do you check backlash on Toyota gear?
Backlash is typically checked using a dial or test indicator. The measurement is made on the face of the one of the ring gear teeth, perpendicular to its meshing surface. With the pinion held steady, the ring gear is rocked back and forth, and the play between the pinion and ring gears is measured.