What should rear pinion angle?
According to Currie, the average car crafter should strive for between 1 and 3 degrees between the tailshaft of the transmission and driveshaft, and 1 to 3 degrees between the driveshaft and pinion. Furthermore, the two angles should be nearly equal (between 1 and 3 degrees), but always opposite (see crude diagram).
How do you fix pinion angle?
If you are using a four-link rear suspension the pinion angle is easily adjusted by changing the lengths of the bars that locate the rear axle. However, if you have mounted your rear axle on a pair of parallel leaf springs things are a bit more complicated than simply adjusting a couple of rods.
What is the maximum pinion angle?
In order to minimize power loss and vibration in an offset configuration, the pinion centerline and the transmission centerline need to be parallel. In general, the largest angle for racing applications should be 2 degrees and the centerlines should be parallel within a few 1/10 of a degree.
What does changing pinion angle do?
For these guys, pinion angle is used to adjust how hard they hit the tire on a launch. Remove the bind, or in other words have the correct pinion angle, and you’ll hit the tire harder because the suspension will move that much more freely.
Can pinion angle cause hop?
Short answer: No. Contrary to popular belief, pinion angle has NO effect on wheel hop or traction.
How much does pinion angle change under load?
The angles should be equal (parallel) when the pinion is under load, not when the car is sitting static. When you’re accelerating the pinion will/should rise 2 to 3 degrees, if it is not aligned under a load it will vibrate.
How do you adjust pinion depth?
Pinion Depth – The distance from the face of the pinion gear to the centerline of the ring gear. This is adjusted by adding or subtracting shims to the inner pinion bearing.
Does lowering a car change pinion angle?
Yes, lowering the rear suspension changes your pinion angle and affects how your LCAs respond (squat) under hard acceleration.
How do you calculate driveline angles?
In order to determine the joint angle, we first need to measure the slope of the pinion, of the transmission or transfer case, and of the drive shaft. The differences are the net joint angles. For example, if your drive shaft is 20 degrees and your transfer case is 5 degrees down, your joint angle is 15 degrees.
How tight should a pinion nut be?
Be careful a quarter turn past optimum is way too tight. You only want 12-20 in. lbs of torque on the free spinning pinion. If you go too tight, the only thing to do is take it apart and crush a new sleeve.
What supports the pinion gear in the differential housing?
The pinion gear is supported by two bearings, at for and aft, that are mounted in the differential housing. The bearings are set to a specific preload when the differential is assembled. The depth in which the pinion gear protrudes into the differential housing is also preset when the differential is assembled.
How do you replace front pinion seal?
Slide the pinion yoke off the pinion shaft and set it aside. Using a small flat screwdriver, bend the outer metal ring of the seal to help loosen it then pry it out of the bore. Pack the cavity behind the seal with lithium grease then install the new seal into the bore.
What is a pinion gear bearing?
A Pinion Bearing is the bearing on the Pinion shaft holding it into the Differential Case, (Pumpkin). Now the Pinion Gear on the Pinion Input Shaft can be shimmed at or near the Pinion Bearing, to make it fit better, or Mesh into the Ring Gear, transferring power to the internal Cluster,…
What is differential rebuild?
Differential Rebuilding. When a differential fails or has been damaged, fixing it requires taking the differential apart and replacing the broken or damaged gears, as well as any other components that may have suffered damage from the failed components.