VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. 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. Camshaft thrust Plate bolts 106 in-lbs. This process helps increase longevity of both the pinion gear and its tapered bearings while also providing optimal performance from both components at all times. Unfortunately, once this tension has been released the crush sleeve cannot hold it again. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. What size is pinion nut Silverado? That does not describe how tight the pinion nut needs to be however. 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 . 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. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. By Albert. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. 14 TO 19. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. 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. 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. All rights reserved. Upgrade your cam, intake, headers, stall converter, and the list goes on from there. Chevy Hardcore NEWSLETTER - SIGN UP FREE! 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.) I like to slowly tighten the new pinion nut until I take up all of the front to back free play. Yukon Gear's Pinion Nut makes any job more efficient by ensuring your parts remain secure while providing superior protection from contaminants. Is that really all it takes? 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 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. Over 6,000 Automotive Torque Specs. When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. 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. To begin, the yoke or coupler must be attached to the pinion shaft. 2008 Sprinter 2500 170 - camper van. 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 need the torque on the pinion nut for the rear differential. 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. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. 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. Choosing a higher ratio will provide more power and torque for pulling heavier loads or navigating steep grades with ease, while lower gears are better suited for those tackling long stretches of open highway or cruising around town at slower speeds. ft. Most 8.2 factory covers also have the strangeprotrusionat the top. Reply Quote. I have a 1993 Suburban K1500. In addition, if the sleeve is over-crushed during installation then it must also be discarded and replaced with a new one as crushing it too much can cause damage to other components within your transmission. .006" to .010" 120 ft-lbs. 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. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. 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. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 What is the torque specs on pinion nut? lbs. One intimidating part for a lot of guys is the rear end. Tightening Torque Clamp Load (lbs.) Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. For a better experience, please enable JavaScript in your browser before proceeding. 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. These are two pinion gears for the 8.5-inch 10-bolt. Originally, gear ratios ranged from 2.41 through 4.10. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. 9 Minutes Read / This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. Try our Differential Gear Calculator. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). 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. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. We will safeguard your e-mail and only send content you request. You tighten it until the bearing preload is correct. 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. Follow along as we show how to measure and install a C10 one piece driveshaft. A forum community dedicated to all General Motors truck owners and enthusiasts. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. We think top-notch customer service is the most important thing we do. I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. It's got a 350 with a 10-bolt rear end. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. 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. 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. 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. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). The easiest way to tell the difference is by looking at the brakes. The small torque . It saved me time and effort trying to crush a brand new crush sleeve. ExtCab96S_Dime . Shop Differential Pinion Bearing Spacers and Sleeves at Summit Racing. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. Jul 2, 2020 / It said you want this to be from 5-35. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. The 8-inch Ford rear axle was used from the early 1960s to 1980 in small and mid-size passenger cars with six- and small-block V-8 engines. When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. Oct 29, 2001. MODEL 20. 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. In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? Use oil on the pinion nut washer surface during all assemblies . Is a GM 10 bolt rear end good? Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. Copyright 2023 Sierra Gear & Axle - Web Design by Zenxeon Technologies, Backlash for Aftermarket gears .006 -.012, Instructions Differential Installation & Setup, Differential Setup & Torque Specifications, GM RPO Codes Axle & Ratio Identification, Measurement Axle Shaft Length & Bolt Circle. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. 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. 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? We talked to a few of our in-house race experts about ways to make this racing season your best one yet! I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. The pinion nut needs to be torqued to 250 ft/lbs. Here's a link to when I did mine. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. If the nut is loose then the crush sleeve must be changed. 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. Find the application and ratio you need? Uses 28 or 30 spline c-clip axles. 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. Edit: The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. Call 800.979.0122, 7am-10pm, everyday. This is an 8.2 BOP axle. 8-Inch Ford Rear End Torque Specifications. If in doubt, consult our staff of differential parts specialists. Save Share. Oct 20, 2011. Pinion bearing preload is measured in inch-pounds, and is a measure of the rolling resistance of the pinion bearings after proper torque has been applied to the pinion nut. This sleeve must be replaced every time the pinion nut is torqued. 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. 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. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Pinion preload (new bearings): 17 - 30 in*lb. 3. remove yoke from splines. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. Introduction. Differential cap bolt torque: 90 ft*lb. The OEM pinion nut is 1 1/4 inches. 2. unbolt pinion nut. 9 Minutes Read / Some of the most popular GM vehicles have come with 10-bolt rear ends. sny 00235 converted Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) Sometimes, pinion bearing preload can be a tricky procedure. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! 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. 2 ways. Next remove the nut and change the seal. Some builders . OEM bolts have thread locker on the threads. lbs.) (note make sure the pinion bearing is well oiled when doing this procedure.) 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. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. It also has an inner diameter of 1 . 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. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Backlash refers to the distance between two mating gear teeth when they are not engaged. 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 . 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. Mine was a pita. grade 8. 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. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . The Fora platform includes forum software by XenForo. 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. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Have a seal puller if possible, makes getting the old one out a lot easier. 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. CHECK FREQUENTLY as you progressivley tighten the pinion nut. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use.
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