you have it pretty much. Cover Bolts: 25 ft lbs. 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. GM: .035. They say ignorance is bliss but I say it's just damn expensive. 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.) From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. For that reason,many enthusiasts are considering the 10-bolt. I was able to pull the old crush sleeve from the pinion gear shaft without damaging it, so I just reused it and added a 0.51mm shim to it. Have a seal puller if possible, makes getting the old one out a lot easier. GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . GM 10.5" 14 Bolt: 20 to 35 in-lbs. At West Coast Differentials we are committed to making your experience with us totally enjoyable. Find the application and ratio you need? This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. . Is that really all it takes? Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. Speedway also offers the . Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. It has a black oxide finish that ensures corrosion resistance while its construction of hardened steel ensures durability even under extreme conditions. #5. 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. PINION PRELOAD NEW INCH LBS. Nov 18, 2016. Our Mopar flexplate buyers guide will help. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. This sleeve must be replaced every time the pinion nut is torqued. 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. The pinion diameter is 1.438 inches, and has 25 splines. Doing a gear ratio change but not sure what you want? 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. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. Sometimes, pinion bearing preload can be a tricky procedure. Continue tightening the pinion nut to collapse the spacer and preload the bearings. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. Edit: Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 We look forward to serving you! 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. 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. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. 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. Tightening Torque Clamp Load (lbs.) . EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. For reference use at own risk. 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. You will need a torque meter in inch-lb. What is the gear ratio on a 10 bolt rear end? Well show you what to look for in this buyers guide. When looking at the housing from the rear, an 8.5 will have two squared off chunks of casting hanging on each side near the bottom of the differential. Most 8.2 factory covers also have the strangeprotrusionat the top. 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. 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. Dana Technical Service Specs. Many mechanics use an impact gun while others insist the nut should be torqued by hand. Upon initial . 2/3 drop, HP Tuned, Built 60e, 4.10s, Yukon Duragrip, etc. (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). The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. Gear oil is nasty stuff, mostly in smell. Jul 2, 2020 / 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. If it takes a 5/16-inch wrench to remove it, its an 8.5. 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 number of teeth on each of these gears determines how much rotational force is converted into torque or speed. You will need to know that there are different series of differentials (seriestwo and three). The 8.5-inch is often referred to as the "GM corporate 10-bolt" because of its multiple uses, and the 8.5-inch is a semi-float axle, meaning it has only one axle bearing per side, mounted inside the axle tube. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. 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 website uses cookies or similar technologies to enhance your browsing experience. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. Call 800.979.0122, 7am-10pm, everyday. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. Looking for a driveshaft for your 67-72 C10? CRAWLPEDIA Off-Road Encyclopedia. ft. 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. Reply Quote. If in doubt, consult our staff of differential parts specialists. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. 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 is a 32mm or 1 1/4" so you need a socket and adapters for that. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. Differential cap bolt torque: 90 ft*lb. Not only was the 10-bolt assembly used in low performance applications, but it was also utilized in a variety of different vehicles ranging from Camaros, Chevelles and Impalas to even the earlier Chevy IIs. 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. 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. It said you want this to be from 5-35. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. 14 bolts and 10 bolts are different, not sure about changing seals though. Once properly secured in place, you should have no further issues with your pinion nut installation. Part Number. The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). checking the pre load with the inch lb torque . Final torque on the pinion nut is necessary to compress the crush sleeve. The small torque . with an impact. 8-11 in/lbs for broken in bearings is acceptable. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. 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. :yipi: Thats it?? Rotate the pinion when tightening the nut to seat the bearings evenly. How tight should a pinion nut be? Axle Images: Axle Details. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. If the nut is loose then the crush sleeve must be changed. You can use this instead of the crush sleeve. When it comes to suspension, preload is an important factor. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. 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. . Record pinion flange rotating torque, with a torque wrench. Talk to the experts. Currie 60/70 : Torque . If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. I have seen street 12 bolts that . The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). Back off left-side adjusting nut approximately 2 slots. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8.2 BOP rearend. 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. Bear Preload IN. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. 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. All of the parts we sell are also used every day in our busy service shop. As well as many other third member torque specs from Strange. MODEL 20. 1/2" x all lengths 100-110 ft lb. Automotive Chassis Torque Specs. Mikz86TA. 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. Check the pinion preload by rotating the pinion with a torque wrench. It also has an inner diameter of 1 . 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. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. 3/8" T-bolt - 30 ft lbs. The "feel" people are way more experienced that you or I so the top one is re-commended. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. 5. put back together and tight pinion nut to specified torque. 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. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) 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. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. The rotational torque spec is between 15-19. 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. Crankshaft Pulley to Crankshaft bolt 77. 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. West Coast Differentials has been distributing quality differential and axle parts since 1982. Some pinion nuts require a special procedure to be properly installed. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. MOPAR: 8.75" x 1.75" pinion: .090. . He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. Used bearings 10 to 14 inch pounds. May 22, 2021 / 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. ALL72156. 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. (note make sure the pinion bearing is well oiled when doing this procedure.) We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. Skip to main content. .006" to .010" 120 ft-lbs. 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. JavaScript is disabled. 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. increments until rotating torque is achieved. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. 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. This is an 8.2 BOP axle. Pinion preload (used bearings): 8 - 10 in*lb. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. TORQUE SPECIFICATIONS. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. on old bearings. If you installed a new seal, add 1 or 2 in-oz. GENERAL MOTORS: APPLICATION: FT-LBS / ( N-m) AXLE SHAFT FLANGE BOLT 'S' BODY CAR: 27 (37) TRUCKS: 60 (82) AXLE SPINDLE NUT 'A' BODY: 192 (261) 'C' 'E' 'H' & 'K' BODIES : 180 (245) 'J' & 'L' BODIES . 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. While engine power is an indicator of a vehicle's ability to accelerate quickly and reach high top speeds, torque is an indication of how efficiently it can move. sny 00235 converted I have been taking it to ~250-300 ft lbs. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! If used in a daily driver or cruiser application, the 7.5-inch rearend should survive behind an engine with 350hp, if traction is limited during spirited driving. Pin. . What is the torque specs on pinion nut? Next remove the nut and change the seal. Now that we know our pinion depth shim is correct we can do the final assembly. Use oil on the pinion nut washer surface during all assemblies . It was used in different models by all GM divisions with the exception of Cadillac. In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. . 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 . I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. 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. 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. Some of the most popular GM vehicles have come with 10-bolt rear ends. Pinion Nut FT. LBS. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. 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. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. 4.replace seal. Give us a try, we think you'll be glad you did! Good info on this site from what I've seen so far, kudos. It also uses a 10 5/8-inch irregular-shaped cover. 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. Search Car Torque Specifications by Engine or Model That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. 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. 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 . I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. These are two pinion gears for the 8.5-inch 10-bolt. Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. 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. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. The 12-bolt is generally considered to be the stronger of the two rear axles. 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. for new bearings. 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 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. Camshaft thrust Plate bolts 106 in-lbs. 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. BACK LASH 0.000". It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. 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. 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. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 24-32 INCH pounds?? Oct 29, 2001. Setup Specifications. 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. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. 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. 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. 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. The following table contains the proper specifications for all popular axles. With one nut per package and a 7/8-16 thread size, this pinion nut is made from strong steel and has a sleek black finish for a nice look. Pinion nut torque (shimmed preload style): 250 ft*lb. While this article focuses specifically on the GM 8.5 10-bolt rear differential, the parts and processes described herein cover most differential housings.Built from the 1970s through today (the 8.6" 10-bolt is still used in most GM . The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 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. Call 800.979.0122, 7am-10pm, everyday. For inquiries about our products and services, please fill out the form below. Save Share. 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. With its strong construction and corrosion resistant coating, the PYN10 provides reliable performance for years to come, making it one of the best choices you can make when securing your vehicle's rear axle assembly. I have a 2001 2500 HD. The pinion diameter is 1.438 inches, and has 25 splines. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. We started by getting a rebuilt kit from Motive Gear . When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. New bearings 19 to 22 inch pounds. Im gonna go buy a good manual for shit like this. 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. 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. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more!
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