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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. It also has an inner diameter of 1 . When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. 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. The more torque produced, the less energy needed to move the car forward. . FSM says 181-325 ft-lbs. Record pinion flange rotating torque, with a torque wrench. 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. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. Is that really all it takes? It was in the 30-35 I "think" from GM. The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. This is all with the old crush sleeve. 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 . Pinion nut has no torque spec. This sleeve must be replaced every time the pinion nut is torqued. Maintaining your car's paint finish is essential to keep it looking great. Or some do it by feel. Bear Preload IN. 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. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. 1. remove d shaft straps push shaft aside. Alternate Description. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. Original gear ratios in pickups can range from 2.41:1 all the way up to 4.10:1, offering a wide variety of options depending on your needs and preferences. 24-32 INCH pounds?? When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. Ring gear bolts. The pinion nut should then be secured and tightened until there is no bearing play at all. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. Preload doesn't have any effect on spring stiffness; rather, its used as a way of compensating for springs that are too soft or too stiff. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . you have it pretty much. Try our Differential Gear Calculator. 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. in order to compensate for the drag of the new seal, the nut should be tightened more until the rotational torque of the pinion slightly exceeds what was recorded earlier, but not by more that 5 in/lbs. Order before 4PM and most parts ship out the SAME DAY. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. Next remove the nut and change the seal. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). . A forum community dedicated to all General Motors truck owners and enthusiasts. 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. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. 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. Is a GM 10 bolt rear end good? Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. 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. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. Furthermore, this action reflects positively on the company's overall commitment to providing reliable transportation services while ensuring its customers' safety remains paramount at all times. Our Mopar flexplate buyers guide will help. 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. Skip to main content. You can rest assured knowing that your axle is secured with this high quality product. Once you give everything a thorough inspection you can begin the re-assembly process. 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 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. 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 : . 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. Allstar Pinion Nut GM 7.5 8.5 ALL72156. Upon initial . I agree that the preload needs to be about 30 inch pounds. 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. Once you have obtained your desired setting, it is important to apply preload while rotating the pinion in order to ensure proper engagement with its mating components. Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. Pinion Nut FT. LBS. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. 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. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. What is the torque specs on pinion nut? range. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. 9 Minutes Read / Crankshaft Main Bearing Cap Bolts 70. .006" to .010" 120 ft-lbs. Both axles use a third member that contains the differential, which is made up of the . The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. On the other hand, reducing the size of the pinion or increasing the size of spur gear will result in decreased top speed but with an increase in acceleration. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. Talk to the experts. Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) I got the price for the seal, and it is near $9. I have seen street 12 bolts that . 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). By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. All of the parts we sell are also used every day in our busy service shop. The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. with an impact. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. Just think, now when you and Drew drive out to Moab, you can sit and take a nap every other time Drew has to fuel. Check the pinion preload by rotating the pinion with a torque wrench. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. 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. Mgrotel, nice cliff notes. 4.replace seal. However, when you have new gears, a new posi unit, and other variables like mixing housings with differentials you might have to try multiple shims to get a good pattern. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. If the nut is loose then the crush sleeve must be changed. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! It was used in different models by all GM divisions with the exception of Cadillac. 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. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. It is well known that altering the gear ratio of a vehicle, whether it be through changing the pinion or spur gear, can have a significant effect on performance. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. 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. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. What happens if you have too much backlash in differential. :yipi: Thats it?? 35-Spline Pinion - 250 ft lbs. Step 1: To seat, torque nut to 50 (lb-ft) while . MOPAR: 8.75" x 1.75" pinion: .090. . However, the gears will not interchange with a Chevy 8.2. Call 800.979.0122, 7am-10pm, everyday. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . It said you want this to be from 5-35. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. Many mechanics use an impact gun while others insist the nut should be torqued by hand. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. 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. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit.