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. Search Car Torque Specifications by Engine or Model Back off left-side adjusting nut approximately 2 slots. without any detrimental effects occurring. GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . 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 shaft diameter is 1.625 inches and will have either 28 or 30 splines. 10.50 PINION NUT: GM . Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. 2008 Sprinter 2500 170 - camper van. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! (note make sure the pinion bearing is well oiled when doing this procedure.) These are incredibly robust pieces of machinery that can handle a surprising amount of power, as long as you use the right axle for your application. ExtCab96S_Dime . The pinion diameter is 1.438 inches, and has 25 splines. 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. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. Sometimes it feels like youre in a race car when you accelerate hard with a high-torque vehicle. Sometimes, pinion bearing preload can be a tricky procedure. 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. 8 to 11 in-lbs. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. Is a GM 10 bolt rear end good? 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 am also replacing all the bearings on my son's 97 Chevy rear end. you have it pretty much. New bearings 19 to 22 inch pounds. 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. 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. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. This means that extra care and attention needs to be taken when installing these components so that they do not become damaged or rendered unusable. 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. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. This results in improved performance, longer life span and more efficient operation of the system. This tension is achieved through a collapsible spacer which is placed between the bearings and then compressed by turning the pinion gear nut. It also has an inner diameter of 1 . 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. 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. What happens if you have too much backlash in differential. Step 1: To seat, torque nut to 50 (lb-ft) while spinning hub. Torque Specs on Dana 60. When it comes to suspension, preload is an important factor. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! checking the pre load with the inch lb torque . Over 6,000 Automotive Torque Specs. big gear head. The date and location of manufacture coding changed in 1971. Chevy Hardcore NEWSLETTER - SIGN UP FREE! Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. West Coast Differentials has been distributing quality differential and axle parts since 1982. This is zero backlash. So, when adjusting preload, if it is too loose then the shims should be removed. 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. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking 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. 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. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. Unfortunately, once this tension has been released the crush sleeve cannot hold it again. Good luck finding one of these, however, as they are very popular among performance enthusiasts. 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. Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. If i missed any thing PLEASE tell me. 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. Find the application and ratio you need? Install left-side adjusting nut lock, washer, and bolt. 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. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. You can replace the pinion seal without changing the crush sleeve. It also uses a 10 5/8-inch irregular-shaped cover. This is especially true when it comes to cycling. That way, you dont unknowingly spend money on something you really do not want. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. 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. Crankshaft Pulley to Hub Bolts 37. CRAWLPEDIA Off-Road Encyclopedia. . In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. 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. 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. Continue tightening the pinion nut to collapse the spacer and preload the bearings. 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. Mikz86TA. Introduction. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. By Albert. Ring gear bolt torque: 110 ft*lb. 8-Inch Ford Rear End Torque Specifications. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. Part Number. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. Step 1: To seat, torque nut to 50 (lb-ft) while . They say ignorance is bliss but I say it's just damn expensive. Axle Type Cover Bolts FT. LBS. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. Call 800.979.0122, 7am-10pm, everyday. One will want to torque the pinion nut to 190- 240 ft lbs (Small Diff's) D60 and larger 225 -350 Ft lbs with the proper preload achieved. 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. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. 12 Bolt Rear Axle Torque Specs. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. 2. unbolt pinion nut. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! How do you fix a loose pinion bearing preload? This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. PINION NUT GM 7.5 8.5. 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. Pinion preload (used bearings): 8 - 10 in*lb. Ring gear bolts. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . Is a GM 10 bolt rear end good? GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. increments until rotating torque is achieved. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. It was in the 30-35 I "think" from GM. 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. Axle Images: Axle Details. lbs.) Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). 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. Tightening Torque Clamp Load 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? I have seen street 12 bolts that . 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. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. BOP stands for Buick/Oldsmobile/Pontiac. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. 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. 9 Minutes Read / It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. You will need a torque meter in inch-lb. 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. Part Number. Upgrade your cam, intake, headers, stall converter, and the list goes on from there. Doing a gear ratio change but not sure what you want? Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. Pin. Carrier Cap Bolts. 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. 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. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. There is no way to happiness.happiness is the way. 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. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: It also uses a 10 5/8-inch irregular-shaped cover. Some builders . See other Red Line Oil Products that we recommend. Or some do it by feel. If it takes more than 25 in lbs to turn the pinion, then you have tightened it too much and you need to back the nut off. These are considered highway gears that are good for top speed, not for off-the-line performance. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. Mine was a pita. Locate a Sierra Gear & Axle Distributor near you. An 8.2 (shown) will have the same contour as the cover. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. 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. We show you how to keep that old GM transmission when swapping in an LS engine. 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 . If it takes a 5/16-inch wrench to remove it, its an 8.5. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. The more torque produced, the less energy needed to move the car forward. ALL72156. with an impact. 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. stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . 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 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. By continuing to use our website, you agree to our Privacy Policy. The unique design and shape make installation easier while providing ample strength for off-road applications. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. 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. It is important to keep in mind that this can change dramatically based on specific materials used or other variables so it is critical to be sure to consult any instruction manual included with your differential cover before attempting any installation. Next remove the nut and change the seal. Order our high performance synthetic oil and friction additive combo kit at time of order for ring and pinion or bearing overhaul kit and pay only $49.95 plus S&H, a $54.00 value. 3/8" x all lengths 45-50 ft lb. I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. 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. The "feel" people are way more experienced that you or I so the top one is re-commended. 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. This is an 8.2 BOP axle. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. 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. . 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. FORD: .020. 2429 Mercantile Drive Suite A for new bearings. If your mom is lunch, then yes, I've eaten lunch twice today. Pinion preload (new bearings): 17 - 30 in*lb. . This gives us confidence in the quality of the parts we sell. 7/16" x all lengths 60-65 ft lb. 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 : . Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. 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 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. .006" to .010" 120 ft-lbs. 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. 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. 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. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. Once properly secured in place, you should have no further issues with your pinion nut installation. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. The torque required to seat the nut is very large, possible 200 ft-lbs or more. 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 have a 1993 Suburban K1500. 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. ALL72156. 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. 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. Try our Differential Gear Calculator. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! Would this be the same How to write up for my truck? 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. 5. put back together and tight pinion nut to specified torque. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. 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. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. We look forward to serving you! How tight should a pinion nut be? Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. 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. Speedway also offers the . These protrusions are larger than those on the 7.5 rearend. 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. 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. 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. How involved is the process of changing it? For that reason,many enthusiasts are considering the 10-bolt. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. Follow along as Zach works over the old 10 bolt and brings it back to life. 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. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. The PYN10 is a 30 spline pinion nut designed for this purpose, and it is specifically made to be used with vehicles that have a 30 spline pinion in their 10-bolt 8.5" rear end assembly. Check the pinion preload by rotating the pinion with a torque wrench. The torque it takes to crush . I used an 18" breaker bar with a 2 foot pipe on the end of it in order . Follow along as we show how to measure and install a C10 one piece driveshaft. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . 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. Well show you what to look for in this buyers guide. Talk to the experts. DIFF MODEL. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. Then use lock-tight on the threads and tighten the nut back to where it was. 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. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. I have been taking it to ~250-300 ft lbs. Mgrotel, nice cliff notes. 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.