Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. Rotate the pinion when tightening the nut to seat the bearings evenly. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. On the other hand, if there is too much backlash then this will also lead to excessive mechanical wear due to increased friction and noise as the teeth continually rub against each other. It's essential that you use enough force while tightening down the pinion nut so that your component will stay securely attached; however, it's equally important not to over-torque the part, which could cause permanent damage or deformation. . Well help you determine the correct flexplate for your Chevy engine in this buyers guide. There is a difference, but you cant see it unless you set both units on their side, and then measure the distance from that surface to the face where the ring gear attaches. That does not describe how tight the pinion nut needs to be however. The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. if it is under twents hold the yoke with a pipe wrench and tighten just a little at at time till the torque wrench reads a constant 20 inch pounds for the revolutions. But for all intents and purposes, the 10-bolt rearend is a great unit for a street/strip car, and can be stout enough to handle even the occasional abuse delivered by use at the racetrack. So, when adjusting preload, if it is too loose then the shims should be removed. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. To begin, the yoke or coupler must be attached to the pinion shaft. This is all with the old crush sleeve. (Note: The 7.5 GM rear used different pinion bearings in 1979-80 vs. the 81-up axles, so you want to make sure that the old bearings match up to your new pinion bearings). We started by getting a rebuilt kit from Motive Gear . Save Share. Since listing them all within this article is impossible, well be focusing only on visual identification. Carrier Cap Bolts. . Only 1 nut, it all depends on if your using a new crush collar or not and if your just swapping out the pinion yoke or a full rebuild. I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. This website uses cookies or similar technologies to enhance your browsing experience. This axle was found in various vehicles from Chevrolets and Pontiacs to Oldsmobiles and Buicks with some of these models continuing production well into the early 80's. For inquiries about our products and services, please fill out the form below. Some of the most popular GM vehicles have come with 10-bolt rear ends. This is especially true when it comes to cycling. You can rest assured knowing that your axle is secured with this high quality product. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. 9 Minutes Read /
Pinion Nut Torque Spec. It is estimated that this specific axle saw use on over 11 million vehicles during its reign of production making it one of the most popular axles ever created by GM for their consumer market line up. When additional shims are added, this increases the total width of the retainer assembly, pushing the bearing cones further away from their respective cups and as a result reducing drag on them. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. This results in improved performance, longer life span and more efficient operation of the system. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. Uses 28 or 30 spline c-clip axles. This means that extra care and attention needs to be taken when installing these components so that they do not become damaged or rendered unusable. 14 TO 19. It was first developed for racing cars where superior control on fast corners is essential for success; however, today torque vectoring differentials can be found in many production vehicles as well due to their exceptional performance benefits. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. High-Performance Differentials, Axles & Drivelines, How to Measure and ID Differetial Housings, Filling Trim Holes in Car Body: Sheet Metal Welding Tips, Q&A With Our Race Experts: Tuning and Maintenance Tips, Small Block and Big Block Chevy Engine Flexplate Guide, How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions, Chevy C10 Driveshaft Length Measuring Guide, GM Steering Column Compatibility, Interchange & Repair Guide. It should be noted that while this axle is suitable for everyday driving and light duty applications, it must be upgraded if you plan on doing any serious racing or off-road activities with your vehicle. It said you want this to be from 5-35. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. Unfortunately, once the tension on this type of sleeve has been released during installation it cannot be re-used since it will no longer hold the proper tension. The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. We look forward to serving you! BACK LASH 0.000". This process must be done carefully, gradually increasing the tightness of the nut in increments until it reaches the desired torque level required to rotate the pinion correctly. We have your differential parts in stock ready to ship today. I have a 2001 2500 HD. This high quality product ensures that your vehicle's rear axle assembly will remain securely fastened and properly aligned during operation, giving you peace of mind when driving on the roads or tracks. 6 TO 10. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. grade 8. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. The distinction between these two types of torque can be useful for assessing how well a car will perform in different situations: cars with higher levels of low-end torque are typically better suited for starting from standstill or accelerating quickly; whereas cars with greater amounts of high-end torque are likely more suitable for reaching faster top speeds over long distances. :yipi: Thats it?? Skip to main content. Preload plays an important role in many machine designs for its ability to reduce wear and tear on critical components while improving efficiency and accuracy. With one nut per package and a 7/8-16 thread size, this pinion nut is made from strong steel and has a sleek black finish for a nice look. Again, this would be okay in a daily driver or cruiser application, but if installed behind an engine with horsepower numbers climbing into the 400 range, you can plan on an eventual failure. 10.50 PINION NUT: GM . 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. Zach got enlisted by a friend to help rebuild the 7.5" factory 10 Bolt rear in the G-Body Monte that he is working on, so naturally it became a teaching moment. The lower end of this range will give you a cadence of 90 rpm which translates to an average speed of 30 km/h while the upper end will get you going up to 34 km/h. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. This strength comes from its larger pinion shaft diameter which measures 1.625 inches with 30 splines, 13 percent larger than the 1.438 inch diameter and 25 spline pinion shaft found on a 10-bolt axle. 1988 C1500 Silverado, 5.7L with some go fast parts. Typically, 10-bolt differentials are specific to a series of gears. Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. Check the pinion preload by rotating the pinion with a torque wrench. The purpose of preloading a bearing is to eliminate any existing clearance that has been designed into standard ball bearings by utilizing tension or compression loads applied directly onto each component within the assembly. Mine is leaking. on new bearings, or 1.2 Nm (10 inch lbs.) Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. The distance between the lower center bolt on the cover and either adjacent bolt is 3 3/4 inches. The PYN10 - 10-Bolt 8.5" Pinion Nut is perfect for 30 spline pinions, providing a dependable and secure connection between the driveshaft and differential ring gear. When it comes to adjusting the backlash of your vehicle's pinion gear and carrier, there are a few rules of thumb to keep in mind. I need the torque on the pinion nut for the rear differential. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. If your just swapping the pinion yoke out or putting in a new pinion seal and your re-using the old crush collar, just tighten the nut back down till ALL the slop is gone and then tighten about a 1/4 turn more to make sure there is tension on the old crush collar. The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. Originally, gear ratios ranged from 2.41 through 4.10. That way, you dont unknowingly spend money on something you really do not want. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. The only torque you should be concerned with is the torque it takes to rotate the pinion gear alone, 8-14 inch pounds for old bearings, 16-29 in/lbs. First I measured the old crush sleeve as a starting point. This is also likely to reduce run times due to lower temperatures as theres less load being put on your vehicles engine when compared to running with a bigger pinion and smaller spur gear combination. Step 1: To seat, torque nut to 50 (lb-ft) while . Record pinion flange rotating torque, with a torque wrench. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. On the other hand, reducing the size of the pinion or increasing the size of spur gear will result in decreased top speed but with an increase in acceleration. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. The small torque . Nov 18, 2016. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles.