Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. GM: .035. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. Or some do it by feel. One intimidating part for a lot of guys is the rear end. 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. Tightening Torque Clamp Load (lbs.) Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. This gives us confidence in the quality of the parts we sell. This distance must be precise; if it is too small, the gears will bind together and cause mechanical stress which can lead to premature wear or failure. You have to do it a little differently though. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. Record pinion flange rotating torque, with a torque wrench. This is especially true when it comes to cycling. DANA SPICER: .035. Crankshaft Pulley to Crankshaft bolt 77. I need the torque on the pinion nut for the rear differential. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. #5. 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. 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 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. The engine roars and the tires dig into the pavement as they work to move your car forward, pushing you back into your seat with tremendous force. 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? Backlash refers to the distance between two mating gear teeth when they are not engaged. Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. 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. 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. TORQUE SPECIFICATIONS. If youre building a street car and want to improve performance, we all know the drill. You tighten it until the bearing preload is correct. The Fora platform includes forum software by XenForo. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. This versatility makes it a great choice for those who want to take their car from the street to the track without worrying about its durability. If it takes a 5/16-inch wrench to remove it, its an 8.5. Connecting Rod Cap Nuts 38. This is an 8.2 BOP axle. Once you give everything a thorough inspection you can begin the re-assembly process. Alternatively, shims can also be used to adjust the pinion depth. CAP TORQUE. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. 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. 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. 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. on old bearings. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. Bearing Cap Torque (Foot Lbs.) Axle Retainer Plate Nuts: 3/8" Grade 8 - 45 ft lbs. If in doubt, consult our staff of differential parts specialists. 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. Over 6,000 Automotive Torque Specs. . The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. FSM says 181-325 ft-lbs. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. 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. 8 to 11 in-lbs. This sleeve must be replaced every time the pinion nut is torqued. 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 . When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. You will need to know that there are different series of differentials (seriestwo and three). The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . What is the torque specs on pinion nut? Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. 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. 3. remove yoke from splines. checking the pre load with the inch lb torque . Oct 29, 2001. This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. Find the application and ratio you need? Would this be the same How to write up for my truck? Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. 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. He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. 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. LBS. Doing a gear ratio change but not sure what you want? 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. increments until rotating torque is achieved. Save Share. For a better experience, please enable JavaScript in your browser before proceeding. 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. On the other hand, if the preload is set too loose it can cause a whining noise to originate from within the rear end as well as abnormal gear wear due to excessive movement between the two components - eventually leading to failure. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. 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. RING GEAR TORQUE FOOR LBS. It has been proven to be reliable in high-performance and high-horsepower applications, but it can also handle occasional abuse from use on the racetrack. This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. Torque Specs on Dana 60. A forum community dedicated to all General Motors truck owners and enthusiasts. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Take Zach R. for instance. . Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. Locate a Sierra Gear & Axle Distributor near you. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. It said you want this to be from 5-35. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. But, did you know there is more than one style of 10-bolt rearend? This ring and pinion install kit comes with new pinion bearings, carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. :yipi: Thats it?? 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. Differential cap bolt torque: 90 ft*lb. .006" to .010" 120 ft-lbs. May 22, 2021 / Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. I don't use it on the bearing cap bolts. . Pinion Nut FT. LBS. 12 Bolt Rear Axle Torque Specs. Nut secures driveshaft yoke to pinion gear. Talk to the experts. First I measured the old crush sleeve as a starting point. Shop Differential Pinion Bearing Spacers and Sleeves at Summit Racing. The reliability of the axle tube and . 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. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. Torque measures the amount of force that is generated when the engine rotates at a certain speed. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. Here is my related question at almost 1 a.m. and torn down in driveway need to get to work: There was quite a chance that you have crushed the sleeve beyond the preload spec to make it hard to turn. Typically, 10-bolt differentials are specific to a series of gears. BACK LASH 0.000". Pin. 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. 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. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. By continuing to use our website, you agree to our Privacy Policy. This heavy-duty nut is made with high quality materials and manufactured to exacting standards, ensuring it stands up to whatever you throw at it. 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. The date and location of manufacture coding changed in 1971. The torque it takes to crush . Mgrotel, nice cliff notes. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. 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. After that we removed the old bearings and cleaned all the parts up in the solvent tank. GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . Sometimes, you need to push yourself. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. It saved me time and effort trying to crush a brand new crush sleeve. 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. (note make sure the pinion bearing is well oiled when doing this procedure.) Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. Some builders . big gear head. How a GM 10-Bolt Differential Goes Bad. The control arm-mounting ears on top of this 7.5 rearend denotes it is usable for any 1978-88 GM A or G-body intermediate like a Cutlass, Monte Carlo, El Camino, Malibu, Regal, or Grand Prix. FORD: .020. CRAWLPEDIA Off-Road Encyclopedia. This essential part is designed for use on vehicles with a 1 1/4 inch socket and 7/8 x 14 thread that can be found in many common automotive applications such as differential covers, yokes, and axle shafts. 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. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. Good luck finding one of these, however, as they are very popular among performance enthusiasts. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. 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. Sie Bear Caps FT. LBS; AMC 20 Well help you determine the correct flexplate for your Chevy engine in this buyers guide. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. 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. Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. We will safeguard your e-mail and only send content you request. 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 preload (new bearings): 17 - 30 in*lb. Pinion Bearing Preload (New) (inch/lbs) Pinion Bearing Preload (Used) (inch/lbs) Backlash (.001 in) Ring Gear Bolt Torque (Foot lbs.) . Most 8.5-inch 10-bolt rearends have two extruded, cast-in lugs on the bottom of the differential housing at the 5:00 and 7:00 positions. Ford 9 inch Torque Specs for Ford 9 inch center Section torque specs. 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. 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. 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. 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. Peter - I'm retired but work part time as a pain in the ass. Follow along as we show how to measure and install a C10 one piece driveshaft. 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. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. Original gear ratios in pickups can range from 2.41:1 all the way up to 4.10:1, offering a wide variety of options depending on your needs and preferences. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. If it takes a 1/2-inch wrench to remove it, its an 8.2. 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. Once you have obtained your desired setting, it is important to apply preload while rotating the pinion in order to ensure proper engagement with its mating components. 6 TO 10. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Install left-side adjusting nut lock, washer, and bolt. Sometimes, pinion bearing preload can be a tricky procedure. There are several differentials for the 10-bolt rearend. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. Then use lock-tight on the threads and tighten the nut back to where it was. Read More. 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. What happens if you have too much backlash in differential. 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. Just get a couple sacrificial pinion bearings and open them up a little so you don't have to press them on and off the pinion and add/remove shims until you get the correct preload shown on page 2 of the set up manual. So, when adjusting preload, if it is too loose then the shims should be removed. This will ensure that your backlash is correct without having to swap the shims. 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. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. The correct way to do this is to use the yoke lock (part of the setup tool kit we bought) and use a breaker bar with a cheater pipe. West Coast Differentials has been distributing quality differential and axle parts since 1982. For inquiries about our products and services, please fill out the form below. extended cab crew cab p 14 8 6 gm rear axle specifications 10 bolt cont, what are the torque specs on silverado rear diff cover you need rear axle pinion nut torque specs for a 98 chevy 12 ton pickup 2wd the nut is generally torqued to 260 300 ft lbs or 25 inch, proper torque specs for 2002 chevy silverado 1500 44 hub assembly to steering . Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . Additionally, this nut features a thread pitch of 11/16 x 20 which allows for easy removal during maintenance periods or when replacing bearings or other components within your axle assembly.
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