There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: Talk to the experts. If the nut is loose then the crush sleeve must be changed. Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. with an impact. Our Mopar flexplate buyers guide will help. While deciding on the ideal gear ratio for your bike, it's important to consider that a lower value will provide more comfortable pedaling, as you'll be able to spin the pedals at a higher cadence. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) Not only has the 10-bolt rearend proved its worth in high-performance, high-horsepower applications, but it has also been found to be a great unit for street/strip cars. Quaility Gears provide guaranteed performance. Pinion nut has no torque spec. Thats usually proven when used in high-performance, high-horsepower applications. This means that turning the pedals at the front will turn the back wheel 4.55 times over, which requires quite a bit of effort but allows for fast movement once achieved. Cover Bolts: 25 ft lbs. With its strong construction and durable material, the PYN10 10-bolt 8.5" pinion nut makes for an excellent choice for those looking for reliable performance in even the most extreme environments. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. By Albert. for new bearings. Rotate the pinion when tightening the nut to seat the bearings evenly. If your mom is lunch, then yes, I've eaten lunch twice today. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . . Pinion Bearing Preload (New) (inch/lbs) Pinion Bearing Preload (Used) (inch/lbs) Backlash (.001 in) Ring Gear Bolt Torque (Foot lbs.) May 22, 2021 / Are all GM 10 bolts the same? GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. 4.replace seal. With the exception of truck differentials with 30-spline axles, andthosecarrying 2.41 and 2.73 gears (series two), the differentials will support all gear ratios without having to change carriers. You keep on tightening the pinion nut until you are within the in-lb. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. Torque Specs on Dana 60. JavaScript is disabled. This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. Used bearings 10 to 14 inch pounds. By doing this, it allows for the desired amount of pressure or preload to be applied on these bearings so they are able to work in harmony with each other within their particular drivetrain system. Find the torque thats on it before hand and tighten it down to that afterwards. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonalprotrusion at the top. 14 TO 19. Replace original worn or damaged nuts each time a gear set is changed. We look forward to serving you! Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. When it comes to suspension, preload is an important factor. Talk to the experts. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. The tension between the bearings of a crush sleeve is a very important factor in its performance, as it helps to ensure that the bearing stays correctly set and does not move or become misaligned. The pinion bearing preload is an important component of the drivetrain system, as it works to ensure that the pinion gear's tapered bearings are running smoothly and efficiently. The large flanges are easy to grip and make installation or removal easier than ever before, allowing you to easily tighten or loosen the nut without fear of it slipping away. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. That way, you dont unknowingly spend money on something you really do not want. Vendor Part Number. In addition, if a crush sleeve is over-crushed during installation then it must be discarded and replaced with a new one as it will no longer be able to provide the necessary level of tension between the bearings for them to function properly. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. Currie 60/70 : Torque . Find the application and ratio you need? BACK LASH 0.000". With careful consideration, selecting an appropriate option for your driving style can make a world of difference when it comes to performance and efficiency behind the wheel. The pinion nut needs to be torqued to 250 ft/lbs. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. Whats The Reason Enthusiasts Cant Get, Yes I Am A Dinosaur, And Why I Feel Electric Cars, Rare Rides: The 1969 Chevrolet Camaro COPO, SPEC Clutches: For That Next Engine Swap Or OEM Upgrade, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop Shop, Moroso Anti-Roll Kit Is The Right Tool For The Dragstrip, Why You Need A Proper Fuel Tank Vent In Your Ride, Fenix Is A Next-Gen 69 Camaro With 1,180 Horsepower. It was used in different models by all GM divisions with the exception of Cadillac. Depending on what you're using it for, there is an axle size to suit; 7.5/7.625-, 8.2-, 8.5- or 8.6-inches from smallest to largest respectively, so no matter how much horsepower you need to support, there is an option available to fit your needs perfectly and provide excellent strength and reliability even under heavy loads and high speeds. to do this. Not only will you be getting the best quality performance with JEGS Pinion Nut, but you'll also have the convenience of knowing it's made to fit GM 8.875 inch 12-bolt car and truck axles. Uses 28 or 30 spline c-clip axles. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. :yipi: Thats it?? This is an 8.2 BOP axle. GM: .035. I reused the old crush sleeve and just added a thin shim out of the set to be able to get the pinion preload using the old crush sleeve. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? This is in contrast to high-end torque, which describes how much power and force is produced by an engine at higher RPMs, such as 4000 or 6000. . Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. Skip to main content. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. Search Car Torque Specifications by Engine or Model 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. . 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. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. But, did you know there is more than one style of 10-bolt rearend? When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Back off left-side adjusting nut approximately 2 slots. If a bearing system is designed to have no clearance, then preloading is necessary. Crankshaft Main Bearing Cap Bolts 70. At West Coast Differentials we are committed to making your experience with us totally enjoyable. How involved is the process of changing it? I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. Oct 29, 2001. Additionally, vehicles with higher torque have better control over their handling due to stronger low-end acceleration which makes them safer on roads and highways. For the street/strip car, the 10-bolt rearend is a great choice. I have a 2001 2500 HD. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. For over a decade, the 8.5-inch 10-bolt was widely used as an axle in many cars and trucks produced by General Motors. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. The reliability of the axle tube and . You will need a torque meter in inch-lb. Then use lock-tight on the threads and tighten the nut back to where it was. . It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. These protrusions are larger than those on the 7.5 rearend. #5. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. The following table contains the proper specifications for all popular axles. The 8.5-inch and 8.6-inch 10-bolt rears are stout and effective differentials that can handle more power than either the 7.5 or 8.2-inch rears. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. How a GM 10-Bolt Differential Goes Bad. SPEC Clutches: For That Next Engine Swap Or OEM, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop, Moroso Anti-Roll Kit Is The Right Tool For The, Steer Your Classic Ride Straight With A New CPP Steering, NEW LS Bellhousing For Magnum And T56-Shifted Hot, Fenix Is A Next-Gen 69 Camaro With 1,180, A Brothers Quarrel Results In This Fine 1955 Chevy, Is This Barn Find The Worlds First Corvette? Axle Retainer Plate Nuts: 3/8" Grade 8 - 45 ft lbs. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. While adjusting preload can provide some relief from overly-stiff or soft springs, ultimately you should replace the springs themselves if they dont provide the desired level of performance. Is a GM 10 bolt rear end good? 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. Lighter and more efficient than its Ford 9-inch and Dana 60 rivals, the 12-bolt enjoys as much use amongst brand-loyal off-roaders as it . Furthermore, its thread size of 1 7/16"-20 makes it compatible with nearly all GM style rear ends from 1955 to present day models. 8-11 in/lbs for broken in bearings is acceptable. 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. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Both axles use a third member that contains the differential, which is made up of the . If youre building a street car and want to improve performance, we all know the drill. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. Alternate Description. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. 2/3 drop, HP Tuned, Built 60e, 4.10s, Yukon Duragrip, etc. DIFF MODEL. The closer the teeth count is between the two gears, the higher the speed output will be; conversely, if there is a greater difference in tooth count, then more torque will be generated. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. Not only is it important to keep the backlash variation under 0.005?, but in an ideal world, no variation should be present at all. Mine was a pita. For a better experience, please enable JavaScript in your browser before proceeding. Not only has Chevrolet taken the initiative to buy back some of their 2017-2019 Chevy Bolt electric vehicles (EVs) due to safety recalls, but they have also gone above and beyond by reimbursing owners the full purchase price for their vehicle. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. I then assembled the pinion, inner bearing, shim pack in the carrier then pressed on the outer bearing using a 20 t press then installed the yoke washer and nut. Take Zach R. for instance. By Albert. range. If it checks out you can put your axles back in, C clips on, cross pin and bolt and you are ready to put the cover on and fill it with rear end lube! When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. 2008 Sprinter 2500 170 - camper van. 8 & 9 BOLTS Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. lbs. 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. Mine is leaking. With the pinion bearing properly lubricated, increase or decrease . Pinion Nut Size: 1-1/4" Featured Products: GM 8.2"/8.5"/8.6" (Chevy) 10 Bolt / Aluminum Girdle Cover / TA Performance / TA_1807 . By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. See other Red Line Oil Products that we recommend. Copyright 2023 Sierra Gear & Axle - Web Design by Zenxeon Technologies, Backlash for Aftermarket gears .006 -.012, Instructions Differential Installation & Setup, Differential Setup & Torque Specifications, GM RPO Codes Axle & Ratio Identification, Measurement Axle Shaft Length & Bolt Circle. The 8-inch Ford rear axle was used from the early 1960s to 1980 in small and mid-size passenger cars with six- and small-block V-8 engines. 12 Bolt Rear Axle Torque Specs. This is a metal spacer, usually made of brass or aluminum, that is used to put tension between the bearings in order to keep them properly spaced and aligned. 9 Minutes Read / Another way to tell the difference between an 8.2 and an 8.5 rearend is to pull the cover and look at the bolt holding the spider gear crosspin. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . Record pinion flange rotating torque, with a torque wrench. The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. It also uses a 10 5/8-inch irregular-shaped cover. In addition, if the sleeve is over-crushed during installation then it must also be discarded and replaced with a new one as crushing it too much can cause damage to other components within your transmission. For that reason,many enthusiasts are considering the 10-bolt. Final torque on the pinion nut is necessary to compress the crush sleeve. Fords small block and big block engine families have their share of flexplate differences. By continuing to use our website, you agree to our Privacy Policy. You can use this instead of the crush sleeve. Save Share. minimum is 181 ft-lbs., maximum 325 ft-lbs., keep cranking till you get within the range of 7.8-11.3 in-lbs of preload torque on the pinion. Some guys even go to the trouble of making a set-up bearing so you dont have to press on and remove the pinion bearing to try different shims. A full range of pinion gears is offered for the Chevy 10- and 12-bolt axle assemblies so you are able to select the correct gear set for your vehicle, application, and setup. . Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. If it takes a 1/2-inch wrench to remove it, its an 8.2. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. Sometimes, pinion bearing preload can be a tricky procedure. 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.