We talked to a few of our in-house race experts about ways to make this racing season your best one yet! does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . For 30 spline pinion axles, PYN10 offers a 10-bolt 8.5" pinion nut that is designed to provide secure and reliable performance in the toughest of conditions. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. This one is not as easy as it sounds. Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/553/e/driveshaftThe differential Pinion Flange is part of the universal joint that connects the drive . This is especially true when it comes to cycling. We have your differential parts in stock ready to ship today. RING GEAR TORQUE FOOR LBS. 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? If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. The more torque produced, the less energy needed to move the car forward. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Mikz86TA. Find the torque thats on it before hand and tighten it down to that afterwards. Call 800.979.0122, 7am-10pm, everyday. 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. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). An 8.2 (shown) will have the same contour as the cover. The distance between the lower center bolt on the cover and either adjacent bolt is 3 3/4 inches. 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. The torque required to seat the nut is very large, possible 200 ft-lbs or more. Good luck finding one of these, however, as they are very popular among performance enthusiasts. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. Some builders . 5 - 8 : Ring Gear Bolt Torque (Foot lbs) 120 : Bearing Cap Torque (Foot lbs) 135 : Pinion Nut Torque: Tighten as necessary to obtain correct preload: Pinion Bearing Retainer Torque (Foot lbs) :65 : . Upon initial . This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. It has a black oxide finish that ensures corrosion resistance while its construction of hardened steel ensures durability even under extreme conditions. The pinion diameter is 1.438 inches, and has 25 splines. Differential cap bolt torque: 90 ft*lb. 2008 Sprinter 2500 170 - camper van. Lifted78Chevy. Mine is leaking. 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. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Skip to main content. If you're just starting out your adventure with single speed or fixed gear bikes then it's best to opt for ratios around 2.7-2.8 as they are easier on your legs and can help build up strength gradually as you continue cycling further and faster each time. 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. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. Axle Type Cover Bolts FT. LBS. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. Reports from multiple Chevy Bolt owners confirm that on May 28th, 2021, Chevrolet began taking steps to rectify any potential issues with these cars by paying off the original cost and allowing them to be taken off of the road. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. checking the pre load with the inch lb torque . I don't use it on the bearing cap bolts. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. The pinion on the left is part of a 4.11:1 gear set; the one on the right is a 3.08:1 pinion. 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. 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. Pinion preload (new bearings): 17 - 30 in*lb. For bearings that are already in use, set preload at 15 inch-pounds; if they are new bearings then you should aim for 25 inch-pounds when setting preload. How a GM 10-Bolt Differential Goes Bad. Ford 9 inch Torque Specs for Ford 9 inch center Section torque specs. The 10-bolt GM rear end has been used in many different applications since its introduction in 1968 and continues to be highly regarded as one of the toughest axles available today due to its proven durability and versatility over decades of use in a variety of situations requiring extreme performance requirements from street racing too off roading adventures. 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. Is a GM 10 Bolt rear end good? Since listing them all within this article is impossible, well be focusing only on visual identification. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. Cover Bolts: 25 ft lbs. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. 7/16" x all lengths 60-65 ft lb. 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. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. TORQUE-TENSION REFERENCE GUIDE Printed in U.S.A. Supply Part Number: 9702365 AS 06/14 Torque Poster . While the 8.5-inch rearend was used on vehicles up to 1999, The 8.6-inch (8.625) was used on 2000 and later-year trucks. Pinion Nut Torque Spec. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. 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 nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. JavaScript is disabled. 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. Uses 28 or 30 spline c-clip axles. 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. What happens if you have too much backlash in differential. If the nut is loose then the crush sleeve must be changed. By continuing to use our website, you agree to our Privacy Policy. 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. Alternatively, shims can also be used to adjust the pinion depth. 3.08 and numerically lower gears = 1.660-inch, 3.23 and numerically higher gears = 1.950- inch, 2.73 and numerically lower gears = 1.615-inch, 3.08 and numerically higher gears = 2.00-inch, 2.56 and numerically lower gears = 1.530-inch, 2.73 and numerically higher gears = 1.720-inch. To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. Typically, 10-bolt differentials are specific to a series of gears. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. Is a GM 10 bolt rear end good? on new bearings, or 1.2 Nm (10 inch lbs.) big gear head. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. Now that we know our pinion depth shim is correct we can do the final assembly. You can replace the pinion seal without changing the crush sleeve. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 Axle Retainer Plate Nuts: 3/8" Grade 8 - 45 ft lbs. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. You will need to know that there are different series of differentials (seriestwo and three). 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. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. Take Zach R. for instance. First I measured the old crush sleeve as a starting point. If it takes a 5/16-inch wrench to remove it, its an 8.5. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. What is the torque specs on pinion nut? The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. You can simulate pinion bearing preload by tightening the pinion nut until the proper amount of drag is felt with only motor oil on the pinion . We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. on old bearings. I have a leaky pinion seal and housing seal so I am planning on replacing the seals in the very near future. The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. sny 00235 converted Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . The GM 8.5" 10 Bolt axle, also known as the GM 8.6" axle or GM 10-Bolt, is available in many front and rear axle . The pinion nut needs to be torqued to 250 ft/lbs. Bearing Cap Torque (Foot Lbs.) Not sure what to do here but I know I'm looking at a boat load of parts I do not have the money for right now so not sure what the hell I'm going to do. We will safeguard your e-mail and only send content you request. Step 1: To seat, torque nut to 50 (lb-ft) while . Im gonna go buy a good manual for shit like this. On top of that, many pickup owners find that making such modifications also provides them with a greater sense of control over their vehicles capabilities, allowing them to feel more confident and secure on their journey no matter what lies ahead on Oct 5 2022. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. for new bearings. After it has been properly crushed (by checking the rotating resistance of 19-22 inch pounds on the pinion) there should be at least 150 pounds torque on the pinion nut (or else you pull it apart get another crush sleeve and start over). We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. 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. Known alternatively as the GM 8.875-inch (referring to its ring gear diameter), Chevrolet's 12-bolt rear end is one of the most celebrated in the American hot-rodding scene. The specified preload needs to be obtained by carefully crushing the spacer with just enough force from turning the pinion nut in order for it not to be too loose or too tight, as either one can cause serious damage if done incorrectly. I've put a rachet strap to the axle, hit it with a hammer prayed from the inside but it won't budge enough for the c clip to clear the spider gear. I will attempt to cover the necessary steps in building a differential for a GM 10 bolt rear end with an 8.5/8.6 ring gear. The unique design and shape make installation easier while providing ample strength for off-road applications. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. 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. 1. Part Number. DIFF MODEL. Ford 9 inch torque specs; Gear Ratio Calculator; Order Forms. The pinion nut is designed to securely fasten the components together while also providing an effective seal against contamination from dirt, dust and other debris. Axle Images: Axle Details. 24-32 INCH pounds?? The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. 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. Then after getting the proper gear patterns you put the new crush sleeve and seal in place and tighten the pinion nut to force the crush sleeve. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. 2429 Mercantile Drive Suite A Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. When it comes to suspension, preload is an important factor. 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. Sierra Gear & Axle is a premium line of light-duty differential parts. When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. You have to do it a little differently though. This is zero backlash. In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. . 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. 12 Bolt Rear Axle Torque Specs. Sometimes, you need to push yourself. At West Coast Differentials we are committed to making your experience with us totally enjoyable. Gear oil is nasty stuff, mostly in smell. Generally speaking, these torque specifications will fall between 20-30 ft/lbs; however, for most applications ARB recommends a torque specification of right around 25 ft/lbs. I need the torque on the pinion nut for the rear differential. I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Increasing the size of the pinion or decreasing the size of spur gear will result in increased top speed for your vehicle; however this will come at cost to acceleration and increase temperatures from increased load. It said you want this to be from 5-35. 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. As well as many other third member torque specs from Strange. Follow along as we show how to measure and install a C10 one piece driveshaft. Pinion Nut FT. LBS. you have it pretty much. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. Connecting Rod Cap Nuts 38. Backlash arises when two gear teeth mesh together in order to transmit power from one shaft to another; the teeth need some play to avoid jamming and ensure smooth operation. Many times when you are rebuilding an existing rear end you want to save the original pinion bearing shim and re use it under the new bearing. Well show you what to look for in this buyers guide. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! 35-Spline Pinion - 250 ft lbs. It has to be drained to get a peak inside. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. While a carrier-bearing girdle is available for the 8.2-inch rearend and does give some support to the housing it doesnt provide a reliable and suitably strong solution. OEM bolts have thread locker on the threads. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. (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). Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. For the street/strip car, the 10-bolt rearend is a great choice. These are considered highway gears that are good for top speed, not for off-the-line performance. 10.50 PINION NUT: GM . Would this be the same How to write up for my truck? When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. 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. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. It is well known that altering the gear ratio of a vehicle, whether it be through changing the pinion or spur gear, can have a significant effect on performance. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) 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. On the other hand, if preload is too tight then you'll need to take out the pinion gear and add extra shims in order to reduce bearing pressure against the races. It also has an inner diameter of 1 3/16", allowing it to accommodate most 30 spline yokes without any extra modifications or components needed. 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. 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.) Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. Constructed from high quality steel, the PYN10 features an integral washer design that ensures proper alignment of the bearing preload during installation and prevents damage to both the yoke and bearings. How involved is the process of changing it? Record pinion flange rotating torque, with a torque wrench. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. It is robust enough to withstand any punishment inflicted on it by racetrack use. Not sure the torque specs on the carrier bearing caps, we red lock-tight them and hit them with the impact pretty hard at work. I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. MODEL 20. GM: .035. They say ignorance is bliss but I say it's just damn expensive. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. Tightening Torque Clamp Load (lbs.) How tight should a pinion nut be? The ideal amount of torque required on a pinion nut when installing an axle depends on many factors, but typically you should aim for 110-125 ft/lbs of torque unless otherwise specified by step #6 during the installation process. If you installed a new seal, add 1 or 2 in-oz. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. As the speedometer rises, each gear shift is accompanied by an even more intense sensation of power, making every drive exhilarating and unforgettable. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. 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. Have a seal puller if possible, makes getting the old one out a lot easier. 1/2" T-bolts - 50 ft lbs. 440-500 lbs ft and I wouldn't tackle it bring it somewhere where they know what they are doing..I have a four foot torque wrench that goes to 500 but thats one hell of a grunt and you have to hold the flange while doing this. Furthermore, this action reflects positively on the company's overall commitment to providing reliable transportation services while ensuring its customers' safety remains paramount at all times. 8 to 11 in-lbs. There is an anomaly to the corporate 8.5-inch axle assembly that was used in some 1971 and 1972 Buick, Oldsmobile, a few 1969 through 1972 Pontiac vehicles, as well as the 1970 through 1972 Monte Carlo. The reliability of the axle tube and . While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. It also uses a 10 5/8-inch irregular-shaped cover. So, when adjusting preload, if it is too loose then the shims should be removed. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . Assemblers must decide for themselves how much leeway they are willing to allow in this area and assess whether the potential results would warrant such leniency. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. Thanks Mike, Id appreciate it. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs.
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pinion nut torque specs gm 10 bolt