Therefore when dealing with these types of sleeves it's important to make sure they are installed correctly so as not to compromise its integrity or longevity. First I measured the old crush sleeve as a starting point. The distinction between these two types of torque can be useful for assessing how well a car will perform in different situations: cars with higher levels of low-end torque are typically better suited for starting from standstill or accelerating quickly; whereas cars with greater amounts of high-end torque are likely more suitable for reaching faster top speeds over long distances. 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.) OEM bolts have thread locker on the threads. The following table contains the proper specifications for all popular axles. 1/2" x all lengths 100-110 ft lb. If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! 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 X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). Used bearings 10 to 14 inch pounds. 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. Would this be the same How to write up for my truck? For the street/strip car, the 10-bolt rearend is a great choice. He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. 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. Crankshaft Main Bearing Cap Bolts 70. increments until rotating torque is achieved. How a GM 10-Bolt Differential Goes Bad. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. 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. That way, you dont unknowingly spend money on something you really do not want. For inquiries about our products and services, please fill out the form below. Thanks Mike, Id appreciate it. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. Once properly secured in place, you should have no further issues with your pinion nut installation. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . range. The torque it takes to crush . 8-Inch Ford Rear End Torque Specifications. 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. 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. ALL72156. 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. Here's a link to when I did mine. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Sometimes it feels like youre in a race car when you accelerate hard with a high-torque vehicle. Pinion preload (new bearings): 17 - 30 in*lb. 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. Preloading a bearing eliminates the clearance, which increases stiffness and reduces friction. If a bearing system is designed to have no clearance, then preloading is necessary. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. 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 number of teeth on each of these gears determines how much rotational force is converted into torque or speed. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Differential cap bolt torque: 90 ft*lb. big gear head. We talked to a few of our in-house race experts about ways to make this racing season your best one yet! Now that we know our pinion depth shim is correct we can do the final assembly. PDF TORQUE-TENSION REFERENCE GUIDE - Fastenal This article is a compilation of information and and specs relating to the venerable GM Corporate 14 Bolt full-floating rear axle - also referred to as the 10.5" (after the size of the ring gear in inches) or just simply the "14b" for short. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. It was used in different models by all GM divisions with the exception of Cadillac. Pinion Nut FT. LBS. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. Crankshaft Pulley to Hub Bolts 37. History and Identification of Chevy 10 and 12 Bolt Chevy Differentials Pinion Nut 8.2 in GM 10-Bolt | Allstar Performance This ring and pinion install kit comes with new pinion bearings, carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. By Albert. 3/8" T-bolt - 30 ft lbs. CRAWLPEDIA Off-Road Encyclopedia. You keep on tightening the pinion nut until you are within the in-lb. GM 8.6" differentials can be installed in a GM 8.5" axle with the proper conversion bearings. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. Edit: Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . It is robust enough to withstand any punishment inflicted on it by racetrack use. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. What are the torque spec on pinion for a 1996 chevy k1500? - JustAnswer Step 1: To seat, torque nut to 50 (lb-ft) while . West Coast Differentials has been distributing quality differential and axle parts since 1982. This is very important, because if you go too far the crush sleeve will be ruined. to do this. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. 2008 Sprinter 2500 170 - camper van. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. You will need a torque meter in inch-lb. 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. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Yukon Gear & Axle SK CSGM8.5 Yukon Gear & Axle Crush Sleeve Eliminator Kits | Summit Racing. Call 800.979.0122, 7am-10pm, everyday. Reply Quote. Over 6,000 Automotive Torque Specs. 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. 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. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. The amount you tighten the nut (with or without the crush sleeve) is based on the amount of force measured in inch pounds it takes to rotate the pinion. Not only has the 10-bolt rearend proved its worth in high-performance, high-horsepower applications, but it has also been found to be a great unit for street/strip cars. TORQUE SPECIFICATIONS. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. If youre looking for a good.economical 10-bolt rearend to rebuild or install into your hot rod, you will need to be able to accurately identify thedifferent units so you dont accidentally come home with a 7.5 or 8.2-inch differential. 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. The rotational torque spec is between 15-19. The easiest way to tell the difference is by looking at the brakes. Quaility Gears provide guaranteed performance. This will cause the bearings to press more firmly against the races, thereby increasing preload tension. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. It has to be drained to get a peak inside. JavaScript is disabled. After that we removed the old bearings and cleaned all the parts up in the solvent tank. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. How to Replace Pinion Seal & Yoke 1994-2004 Chevy S-10 It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. GM 10-bolt 8.5-inch Differentials | Hemmings ExtCab96S_Dime . The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. If it takes a 5/16-inch wrench to remove it, its an 8.5. As well as many other third member torque specs from Strange. 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. . 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. 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. 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. Nut secures driveshaft yoke to pinion gear. Not only will you be getting the best quality performance with JEGS Pinion Nut, but you'll also have the convenience of knowing it's made to fit GM 8.875 inch 12-bolt car and truck axles. 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. One intimidating part for a lot of guys is the rear end. 5. put back together and tight pinion nut to specified torque. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. It said you want this to be from 5-35. Follow along as Zach works over the old 10 bolt and brings it back to life. Originally, gear ratios ranged from 2.41 through 4.10. 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. Use oil on the pinion nut washer surface during all assemblies . Setup Specifications. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. Good luck finding one of these, however, as they are very popular among performance enthusiasts. I've put a rachet strap to the axle, hit it with a hammer prayed from the inside but it won't budge enough for the c clip to clear the spider gear. 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. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. 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.
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