Lunchbox lockers provide reliable 100% lock-up traction at a low cost. The simplicity and ingenuity living within the Spartan Locker makes it better than conventional lunchbox lockers. The Spartan Locker’s patent-pending design replaces the spider gears in a standard carrier case without using the thrust washers, but the unit’s most revolutionary attribute is its spring-and-pin design. This...
Before proceeding with your drivetrain project, it is essential to check your shipment to ensure that everything is in order. Conducting a thorough inspection helps identify any potential issues, verify the contents, and address any discrepancies or damage. As always, check the contents against the packing slip or order. Review the packing slip, invoice, or order confirmation to ensure all...
How you go about measuring an axle depends on the axle type. Axles with yokes (front axle shafts) are measured from the center of the u-joint bore to the end of the splines. Semi-float and C-clip-equipped axle shafts are measured from the end of the shaft to the outer edge of the mounting flange. Full-float designs are measured from the spline ends to the front surface of the mounting flange....
When you’re driving in a normal manner a positraction limited slip differential is pre-loaded and provides equal traction to both wheels. Mashing the throttle, taking a tight corner aggressively, or working through loose gravel trails will result in the limited slip differential applying more torque where it’s needed. This enhances the grip, control, and predictability of the vehicle....
This quick primer of tech tips is designed to be informational for less experienced installers and a refresher course for seasoned differential technicians. The focus is on time-saving tricks and advice when assembling and setting up a differential, concentrating on preparation, assembly, setting pinion depth, backlash, and more. Anatomy Of A Gear Tooth In...
It has come to our attention that many customers are experiencing gear failure with the 5.38 gear ratio in a Suzuki Samurai. Through extensive independent laboratory metallurgical testing and testing in our own shop we have determined it necessary to set these particular gears up differently! Standard setups usually call for approximately a .052″ pinion depth shim. We recommend starting...
If you do a fair amount of differentials the odds are pretty good that you have come across a spun carrier bearing or two in you time. Most people think that this means you need to hunt for a new housing or drop out but that’s not the case in most instances. There are two different fixes for this problem depending on what style of housing your working on. It’s very common to find a Ford 9”...
There are several types of rear ends that use a threaded side adjuster be it a single adjuster or one on both sides of carrier. The most commonly known rears with this type of carrier adjustment are the Chrysler 7.25-8.25-8.75-9.25, Ford 9”, GM 8.25” IFS, Suzuki Samurai, & Toyota. The GM 9.5” is a little different than most as one side uses shims but the other side is the threaded...
In many cases it is necessary to grind one or more teeth on a ring gear in order to reinstall the cross pin in many c-clip style rearends. In most cases this will not interfere with the contact pattern of the gear or decrease the strength in any way as long as it is done properly. In some rare instances you may need to grind as much as ¼ of one or two teeth away. Although we have seen vehicles...
Some gear sets get chipped or nicked during the manufacturing process or during shipping. In most cases these blemishes are outside the contact pattern, and they can be removed with a few minutes of careful polishing. First thing is to determine if the nick is in the pattern. If this isn’t obvious by looking at the gear, you can install the set into the housing and run a quick pattern check....
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