Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. So, when adjusting preload, if it is too loose then the shims should be removed. 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. 2 ways. Here's a link to when I did mine. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? 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. ALL72156. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. Step 1: To seat, torque nut to 50 (lb-ft) while spinning hub. ALL72156. . 9 Minutes Read /
1988 C1500 Silverado, 5.7L with some go fast parts. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. How do you fix a loose pinion bearing preload? The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. West Coast Differentials has been distributing quality differential and axle parts since 1982. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. This is all with the old crush sleeve. If it takes a 5/16-inch wrench to remove it, its an 8.5. 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. Pinion preload (used bearings): 8 - 10 in*lb. Talk to the experts. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. 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. 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. You can rest assured knowing that your axle is secured with this high quality product. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. You tighten it until the bearing preload is correct. 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 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. Some builders . With the pinion bearing properly lubricated, increase or decrease . 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. FSM says 181-325 ft-lbs. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! 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. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. Find the torque thats on it before hand and tighten it down to that afterwards. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. This gives us confidence in the quality of the parts we sell. Next remove the nut and change the seal. It said you want this to be from 5-35. Tightening Torque Clamp Load (lbs.) Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . We are available to help Monday thru Friday from 8 AM to 5 PM Pacific Standard Time, and most orders placed by 4 PM ship out the SAME DAY! 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . The covers on the 8.5-inch rearends are often 11 inches round with a bulge on the drivers side to accommodate the ring gear. Speedway also offers the . 3. remove yoke from splines. This is an 8.2 BOP axle. A forum community dedicated to all General Motors truck owners and enthusiasts. I have been taking it to ~250-300 ft lbs. lbs.) Unfortunately, once this tension has been released the crush sleeve cannot hold it again. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. What happens if you have too much backlash in differential. The "feel" people are way more experienced that you or I so the top one is re-commended. 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. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. Talk to the experts. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. Doing a gear ratio change but not sure what you want? Backlash refers to the distance between two mating gear teeth when they are not engaged. DIFF MODEL. The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. What is the torque specs on pinion nut? This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. 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. 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. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. #5. 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! 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. It is important to follow the instructions that came with your differential cover, as torque specifications can vary drastically depending on the material and grade of fastener used as well as the material of the diff cover itself. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. FORD: .020. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. Gear Ratio Finder - Find the ideal axle gear ratio for your new larger or smaller tires. Carrier Cap Bolts. 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 . It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. 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. 4.replace seal. The following are recommended Differential Set-Up Specifications for various differentials. 7/16" x all lengths 60-65 ft lb. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. Take Zach R. for instance. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. It was used in different models by all GM divisions with the exception of Cadillac. Well show you what to look for in this buyers guide. Introduction. PINION NUT GM 7.5 8.5. We have your differential parts in stock ready to ship today. Axle Type Cover Bolts FT. LBS. stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. 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. I have seen street 12 bolts that . West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! Pinion Nut Torque Spec. 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. TORQUE-TENSION REFERENCE GUIDE Printed in U.S.A. Supply Part Number: 9702365 AS 06/14 Torque Poster . Thats usually proven when used in high-performance, high-horsepower applications. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. You Make The, SEMA 2022: GEARWRENCH Leveled Up With Distinct Quality Hand, Reignite Your Cat Eye Silverado Headlights With, SEMA 2022: Paragon Corvette Adds Performance Parts To, PRI 2022: FuelTech Talks About The Tech Of The FT700, PRI 2022: Concept Performance Now Offers Aluminum LTR, PRI 2022: Get Locked In With Forgeline Beadlock, Creative Automotion: The Art of Farmtruck &, Randy Bolig The Media Mover And Shaker Behind Chevy, How Ken Lingenfelters Love for Corvettes Benefits So, Shop Tour: Prestige Motorsports Is Your One-Stop Hot Rod, Full Factory Tour: How Edelbrock Makes Its Cast Aluminum, HOLY SHIP! Pinion Nut FT. LBS. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. Sie Bear Caps FT. LBS; AMC 20 Dana Technical Service Specs. If it takes a 1/2-inch wrench to remove it, its an 8.2. Furthermore, this process helps improve performance by increasing load capacity due to preventing misalignment caused by environmental factors such as vibration or thermal expansion of parts over time; additionally it also allows for smoother operation with less noise generation compared to regular ball bearings with their built-in clearances leading ultimately to higher durability rates since theres less overall wear and tear on individual components throughout long term use. 10.50 PINION NUT: GM . This website uses cookies or similar technologies to enhance your browsing experience. 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. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. Crankshaft Pulley to Hub Bolts 37. Have a seal puller if possible, makes getting the old one out a lot easier. We show you how to keep that old GM transmission when swapping in an LS engine. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. 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). ft. 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. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. MOPAR: 8.75" x 1.75" pinion: .090. . We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. 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. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. Locate a Sierra Gear & Axle Distributor near you. It is important to note that if possible, it is best practice to use an old or used pinion nut for this operation, as new ones can often bind when tightened too much. All rights reserved. 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. Mikz86TA. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. How a GM 10-Bolt Differential Goes Bad. 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 . There were an untold number of 8.2-inch axle assemblies built, and although it is only marginally stronger than the 7.5-inch rearend, it does have some aftermarket support. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. The torque required to seat the nut is very large, possible 200 ft-lbs or more. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. For inquiries about our products and services, please fill out the form below. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This tension is achieved through a collapsible spacer which is placed between the bearings and then compressed by turning the pinion gear nut. 5. put back together and tight pinion nut to specified torque. Install left-side adjusting nut lock, washer, and bolt. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). 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. Additionally, its unique thread pattern provides torque retention while eliminating any possibility of loosening or vibrating off over time due to vibration or shock loads. 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. 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. 14 bolts and 10 bolts are different, not sure about changing seals though. At West Coast Differentials we are committed to making your experience with us totally enjoyable. I thought the pinion nut would be more like 50-75 FOOT pounds? 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. This allows you to put the pinion gear in, set the pinion bearing pre-load, set the backlash and then run a contact pattern without the chance of compressing the crush sleeve too much. An 8.2 (shown) will have the same contour as the cover. 35-Spline Pinion - 250 ft lbs. It also uses a 10 5/8-inch irregular-shaped cover. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. Our Mopar flexplate buyers guide will help. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Our LS swap adapter kits make it easy! 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. Crankshaft Main Bearing Cap Bolts 70. 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. I don't use it on the bearing cap bolts. 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. 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. Replace original worn or damaged nuts each time a gear set is changed. 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. 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. Skip to main content. LBS. The pinion nut needs to be torqued to 250 ft/lbs. to do this. 1. Sometimes, pinion bearing preload can be a tricky procedure. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. 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. 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. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. There are several differentials for the 10-bolt rearend. 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. 1/2" T-bolts - 50 ft lbs. 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. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Or some do it by feel. Looking for a driveshaft for your 67-72 C10? 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. 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. 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. They say ignorance is bliss but I say it's just damn expensive. checking the pre load with the inch lb torque . Thanks Mike, Id appreciate it. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! Oct 20, 2011. Quaility Gears provide guaranteed performance. You will need a torque meter in inch-lb. If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. 1/2" x all lengths 100-110 ft lb. PINION PRELOAD NEW INCH LBS. The torque it takes to crush . The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. It involves placing a collapsible spacer between the bearings of the pinion gear, then using a torque wrench to tighten the pinion nut until it reaches the correct amount of pressure or preload on the bearings. Cover Bolts: 25 ft lbs. A higher engine power combined with more torque enables cars to accelerate faster while using less fuel - making it much more efficient and cost-effective in the long run. First introduced in 1970 as a corporate replacement for the older 8.2-inch 10-bolt or 12-bolt 8.875-inch axles, its popularity quickly spread to nearly every GM division aside from Cadillac throughout the 70s. GM: .035. RING GEAR TORQUE FOOR LBS. 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.