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 like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . 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. An important step I like to take is to assemble the pinion and differential case without the crush sleeve or the new pinion nut. Sometimes, pinion bearing preload can be a tricky procedure. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. You will need a torque meter in inch-lb. Our Mopar flexplate buyers guide will help. 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. Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . 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. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. 8-11 in/lbs for broken in bearings is acceptable. Pinion Nut FT. LBS. without any detrimental effects occurring. With the pinion bearing properly lubricated, increase or decrease . Although the 7.5-inch 10-bolt closely resembles the 8.5-inch housing, you can positively identify the Chevy7.5-inchrearend by measuring it. 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. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 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. PINION PRELOAD NEW INCH LBS. Low-end torque refers to the amount of power and force generated by an engine at low revolutions per minute (RPMs), usually between 2000 and 3000. This applies to all types of vehicles with any type of gearing system regardless of pitch or size it doesnt matter which one you change as long as you can adjust it accordingly. On the other hand, if your backlash is too wide you will need to adjust by moving the carrier towards the pinion with a similar measurement technique. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. 35-Spline Pinion - 250 ft lbs. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. Fords small block and big block engine families have their share of flexplate differences. 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. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. JavaScript is disabled. 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. 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. 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. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. By asking ourselves what makes us different than other companies, our answer is that we deliver the level of customer service that other companies only promise. Introduction. 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. Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. What is the torque specs on pinion nut? West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! Follow along as Zach works over the old 10 bolt and brings it back to life. Therefore, when building a performance car or truck that will be subjected to higher than normal stresses and torque loads, such as those produced by high horse power engines or increased traction created by sticky drag racing tires, it may be beneficial to choose a 12-bolt instead of a 10-bolt axle assembly in order to ensure maximum strength and reliability. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. I have a 2004 Chevy Silverado 1500, 4.8L engine, 4x4, single cab, 6' bed, what are the torque specs for the drive shaft bolts that bolt the drive shaft into the rear end yolk? TORQUE SPECIFICATIONS. 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. Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. This method works every time is done precisely as described. Are all GM 10 bolts the same? As an added reference, Speedway Motors also offers a great book from CarTech, titled "High-Performance Differentials, Axles & Drivelines" that helps with step by step breakdowns of the process. There are several differentials for the 10-bolt rearend. They say ignorance is bliss but I say it's just damn expensive. 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. As the speedometer rises, each gear shift is accompanied by an even more intense sensation of power, making every drive exhilarating and unforgettable. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. 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. 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 . 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. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. Continue tightening the pinion nut to collapse the spacer and preload the bearings. Cover Bolts: 25 ft lbs. These are two pinion gears for the 8.5-inch 10-bolt. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . Recheck the torque to turn the pinion until it gets to the point where the amount of torque it takes to turn the pinion is between 15-25 in. One thing often overlooked is the RTV sealant that needs to be applied to the splines (otherwise rear end grease can leak past the splines), and locktite on the new pinion nut. Some pinion nuts require a special procedure to be properly installed. 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. The pinion diameter is 1.438 inches, and has 25 splines. Bear Preload IN. For reference use at own risk. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. The amount of backlash varies depending on the quality and cost of the gearhead; more expensive precision gearheads have nearly zero backlash, while an inexpensive model may have as much as one degree or more. The torque it takes to crush . Torque Specs on Dana 60. All of the parts we sell are also used every day in our busy service shop. 1. remove d shaft straps push shaft aside. to do this. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. CRAWLPEDIA Off-Road Encyclopedia. I have a 1993 Suburban K1500. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. The OEM pinion nut is 1 1/4 inches. Tighten bolt to 20 ft/lbs. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . . Alternate Description. By Albert. But, did you know there is more than one style of 10-bolt rearend? The Fora platform includes forum software by XenForo. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. Install left-side adjusting nut lock, washer, and 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 Series 3 carriers are good for use with 2.73 and lower gears (numerically higher), so 3.08 and 3.73 gears work well. 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. 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. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. Currie 60/70 : Torque . Dana Technical Service Specs. 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. 3. remove yoke from splines. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. OEM bolts have thread locker on the threads. We have your differential parts in stock ready to ship today. 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. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. 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. Now that the hard part is done you can re install the carrier with the shims in place, torque the bearing caps and run one more contact pattern to make sure everything is good to go. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. 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! 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. 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. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. We will safeguard your e-mail and only send content you request. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. 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. 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. When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. lbs.) I used an 18" breaker bar with a 2 foot pipe on the end of it in order . The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. How a GM 10-Bolt Differential Goes Bad. Vendor Part Number. 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. 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. I have seen street 12 bolts that . Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. Ring Gear Diameter: 8.500Cover Bolts: 10Ring Gear Bolts: 10Ax . sny 00235 converted The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. Would this be the same How to write up for my truck? 2 ways. 5. put back together and tight pinion nut to specified torque. in order to compensate for the drag of the new seal, the nut should be tightened more until the rotational torque of the pinion slightly exceeds what was recorded earlier, but not by more that 5 in/lbs. 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. The reason why it's so hard to turn the pinion nut is because not only are you crushing the crush collar but you're also pressing the outer pinion bearing onto the pinion gear. . This gives us confidence in the quality of the parts we sell. 7.25 12-14: 6-7: 6-10: 55: 50: 8 IFS: 12-15: 6-8: 6-10: 55: 60: 8.25 12-15: 6-8: 6-10: 55: 60: 8.75 - 41 Case: 13-15: 6-8: 6-10: 55: 90: 8.75 - 42 Case: 15-25: 7 . PINION NUT GM 7.5 8.5. The 12-bolt is generally considered to be the stronger of the two rear axles. Looking for a driveshaft for your 67-72 C10? It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Then use lock-tight on the threads and tighten the nut back to where it was. GM: .035. for new bearings. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! ALL72156. Part Number. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. Its strength and durability make it an ideal choice for those who want to take their car out for some fun on the track without having to worry about its performance or reliability. 2/3 drop, HP Tuned, Built 60e, 4.10s, Yukon Duragrip, etc. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. 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. Have a seal puller if possible, makes getting the old one out a lot easier. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. The more torque produced, the less energy needed to move the car forward. After that we removed the old bearings and cleaned all the parts up in the solvent tank. This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. Chevy Hardcore NEWSLETTER - SIGN UP FREE! 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. 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. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. New bearings 19 to 22 inch pounds. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. That's all fine and dandy but my pinnion was chewing it's way through the carrier and now I can't get the passenger side c clip to drop out. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. . 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.