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). Increasing the size of the pinion or decreasing the size of spur gear will result in increased top speed for your vehicle; however this will come at cost to acceleration and increase temperatures from increased load. 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. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. GM 8.6" differentials can be installed in a GM 8.5" axle with the proper conversion bearings. MOPAR: 8.75" x 1.75" pinion: .090. . Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . 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. It also uses a 10 5/8-inch irregular-shaped cover. grade 8. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 For reference use at own risk. 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. We look forward to serving you! 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 an 8.2 BOP axle. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. If it checks out you can put your axles back in, C clips on, cross pin and bolt and you are ready to put the cover on and fill it with rear end lube! . It saved me time and effort trying to crush a brand new crush sleeve. We will safeguard your e-mail and only send content you request. So, when adjusting preload, if it is too loose then the shims should be removed. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. Crankshaft Pulley to Crankshaft bolt 77. TORQUE-TENSION REFERENCE GUIDE Printed in U.S.A. Supply Part Number: 9702365 AS 06/14 Torque Poster . . Pinion preload (new bearings): 17 - 30 in*lb. 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. 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. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. :yipi: Thats it?? Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. PINION NUT GM 7.5 8.5. 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. Ring gear bolt torque: 110 ft*lb. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . There were an untold number of 8.2-inch axle assemblies built, and although it is only marginally stronger than the 7.5-inch rearend, it does have some aftermarket support. DIFF MODEL. Is that really all it takes? Back off left-side adjusting nut approximately 2 slots. If it takes a 1/2-inch wrench to remove it, its an 8.2. West Coast Differentials has been distributing quality differential and axle parts since 1982. 7/16" x all lengths 60-65 ft lb. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. Quaility Gears provide guaranteed performance. 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. 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. ExtCab96S_Dime . How a GM 10-Bolt Differential Goes Bad. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. . It was used in different models by all GM divisions with the exception of Cadillac. 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. The torque required to seat the nut is very large, possible 200 ft-lbs or more. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . Our Mopar flexplate buyers guide will help. By Albert. Pinion nut has no torque spec. 2023 Power Automedia. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. The pinion diameter is 1.438 inches, and has 25 splines. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. We are available to help Monday thru Friday from 8 AM to 5 PM Pacific Standard Time, and most orders placed by 4 PM ship out the SAME DAY! Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . Try our Differential Gear Calculator. This one is not as easy as it sounds. Jul 2, 2020 /
SPEC Clutches: For That Next Engine Swap Or OEM, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop, Moroso Anti-Roll Kit Is The Right Tool For The, Steer Your Classic Ride Straight With A New CPP Steering, NEW LS Bellhousing For Magnum And T56-Shifted Hot, Fenix Is A Next-Gen 69 Camaro With 1,180, A Brothers Quarrel Results In This Fine 1955 Chevy, Is This Barn Find The Worlds First Corvette? Some pinion nuts require a special procedure to be properly installed. 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. 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. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonalprotrusion at the top. 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. . Originally, gear ratios ranged from 2.41 through 4.10. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. 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. What is the torque specs on pinion nut? Maintaining your car's paint finish is essential to keep it looking great. 1988 C1500 Silverado, 5.7L with some go fast parts. Reply Quote. That way, you dont unknowingly spend money on something you really do not want. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. 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. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Mikz86TA. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. Now that we know our pinion depth shim is correct we can do the final assembly. Assemblers must decide for themselves how much leeway they are willing to allow in this area and assess whether the potential results would warrant such leniency. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. 9 Minutes Read /
Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. Check the pinion preload by rotating the pinion with a torque wrench. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. .006" to .010" 120 ft-lbs. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? 8-Inch Ford Rear End Torque Specifications. Most 8.2 factory covers also have the strangeprotrusionat the top. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. These protrusions are larger than those on the 7.5 rearend. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. Fords small block and big block engine families have their share of flexplate differences. 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. 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. 14 bolts and 10 bolts are different, not sure about changing seals though. 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. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. Upon initial . EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . Preloading a bearing eliminates the clearance, which increases stiffness and reduces friction. Upgrade your cam, intake, headers, stall converter, and the list goes on from there. 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. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). Unfortunately, once this tension has been released the crush sleeve cannot hold it again. 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. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. Shop Differential Pinion Bearing Spacers and Sleeves at Summit Racing. 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. What is the gear ratio on a 10 bolt rear end? 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.
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