EMi LR & RR Tire Grooving Guide Square rear axle to rear control arm pivot bolts. Once your rear end is square it helps to record the measurement from the brake rotor to the frame as well as from the trailing arm brackets to the frame both left and right. Check out the 410 sprint car brake installation and bleeding the brakes! General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. Check it out! Either way (square or center); first set the distance from the motor plate to the axle on the right side. © 2021 Speedway Motors, Inc. All Rights Reserved. Learn how to install the floor plan, brake lines, and motorplate in a 410 sprint car as we launch our 410 Sprint Car Build. Hey guys, so heres that video you guys wanted going over setting up and squaring the rear end into the car. Setting the rear end front to back – Start by setting the 2 lower 4 link bars at 14” center to center of the rod end … I know 1 full turn of the rear lower makes a big difference in how the car handles. My rear end is not centered !!! If you want to center the rear end. If both side are equal you have the rear end square. Once the axles are centered, square the front axle by measuring in an X or V to common points. The most important rule for squaring a car is that the back axle is square to the motor plate, and the front axle is squared to the motor plate. A great way to double check that everything is set correctly, is to make sure that the rear arm and torque ball move freely. Since the torque tube is hooked up and the right side is held in place with the right Tru-Square tool; the rear end will … At 01:13 PM 3/7/04 -0800, Dave Plantz wrote: >" I was wondering if you might know how to remove the rear end oil drain plug." a. Today, we're following along as Jason Martin builds the Pro Shocks for our sprint car and installs them. Give us a call at 800-216-1632 to get started. There's lots to learn from this episode! Jason Martin shares his 15+ years of experience to help racers learn how to square the rear end of a sprint car. Our team of builders continues to make progress on the car! Triple check with the angle finder and feel that the rear arm and jacobs ladder move freely. Apparently there were at least two different square hole patterns used during MGA production. Now we want to begin lining up the right side tires. Rotate it until it’s in between zero and two degrees. the differential is contained in a removable carrier assembly which is extracted from the axle housing toward the front of the car. In general your static rear setting should be dead square. The Chrysler 8-3/4" rear axle assembly was introduced in 1957. Learn how to assemble a rear axle assembly as we put together ours for the 410 Sprint Car Build. Jack the car up. To set the rear end … Once the rear end is in position, TRU-SQUARE holds it in place while you time the … Square your rear-end in minutes...! Squaring a Race Car. Step 1: Setting Up The Reference String. Then take the bolt from the lower birdcage flag and put it through the heim. In addition, we want the rear end housing to be located correctly from side to side in the car. For one of them you can use a 3/8" square socket drive (if the plug is not too tight). For the most accurate measurement I would suggest dropping a plumb from both ends of the motor plate to create a straight line (extend the line so that it runs just outside of the width of the car) and then measure straight back from that line to the hubs. Either way Tru-Square will work for you. To begin, set the rearend on six-inch blocks, then make sure the car is level. You need to ensure that the axle diameter does not get smaller than the splined area, or else there will be no material on which to cut splines. The rear end is moved into position by adjusting the length of the TRU-SUARE tools. Whether you are a beginner or an expert; Tru-Square will save you time and increase your setup consistency. Use the right tool as mentioned above. These investment cast steel lower rear mounts are designed for regular tube type shock absorbers. Having the rear end squared in the car is very critical. RANDYS carries GM differentials from the small 6.5", as found in the Chevy Vega, up to the larger GM 11.5", common under 3/4 and 1 ton trucks from Chevrolet and GMC. Check out the process of installing the full containment seat and seatbelts in episode 4 of the 410 Sprint Car Build series. Then, tighten the jam nuts for the radius rods, rear arm and jacobs ladder. If you want to square the rear end, adjust the tool until the axle on the left side is the same distance from the motor plate as the right side. First, what width will the rearend be once narrowed and second, how to accomplish this without warping the axle tubes when you weld them. 7.5 inch, 8.5 inch, 10.5 inch. Thanks for following along! Step 2a. In your shop you need to spend the time needed to ensure that your rear end is exactly square. Products to Compare (max of 3) X. If I mount two big tires on 5.5 inch backspace wheels, the left side fits with good clearance and the right tire contacts the exhaust pipe and quad shock. Rear axle assembly can be difficult, but Jason is here to help simplify the process. Narrowing a rearend is simple -- measure twice, cut once, weld correctly, and use the right tools. Most square the front to a crossmeamber then square the rear off the front so whole car is a square and not a rhombus. Offering spring pins, hangers, shackles, and U-bolts. We're making serious progress on our build. from gearbox and differential -- TS-204. This way any tweak in the front crossmeamber is eliminated. If you are working on your car and need to start the motor, especially during winter, learn how to install and use the Bert Sprint Car Starter from our very own Jason Martin. Total the distance between both tires and their respective reference strings and then subtract that total from the distance between your two reference strings to … Speedway Standard Set-Up Blocks, 1-3/4 - 4 Inch, Speedway Standard 3 Inch Through 6 Inch Set-Up Blocks, Rear Axle Installation - 410 Sprint Car Build, Rear Axle Assembly - 410 Sprint Car Build, Brake Lines/Motorplate Installation - 410 Sprint Car Build. You can rotate the heim to adjust if needed. Getting Your Rear End In Line. If it doesn’t, rotate the heim until the pin easily slides in. So far, I've tried everything. If the donor rear is wide enough, and the differential is off-center, you may get away with only cutting and re-splining one side. To begin, set the rearend on six-inch blocks, then make sure the car is level. Once those steps are completed, it’s time to level the birdcages. If you must adjust one end, disconnect the Panhard Bar first...lengthen or shorten … Once the rear end is in position, TRU-SQUARE holds it in place while you time the birdcages and hook up the rod and torsion arms. square the kart (wheels straight foward) the best you can... then you put un-bent rims without tires on front and rear (right side)... take a 4 foot level and place tight against the rear rim the rim in the front should have a gap if its same distance in the front and the rear of the front rim then no lead if there is a difference you can see if there is positive lead or negative lead... my 2008 element had 3 … Order replacement suspension parts for the rear drive axle of your Navistar or International truck. It is a banjo-type (Hotchkiss) axle, ie. Also the quad shock slightly rubs the main shock on that same side but clears on the left wheel. Check out our 6th episode of the 410 Sprint Car Build series. Dirt Boy Hillbilly Rear End Squaring (patent not pending) Duct tape Nylon string Two 3/4 Jam nuts Tape measure-As somewhat described above, except I duct tape (I can't afford magnets ) 2 pieces of the nylon strings with nuts tied to the end (hillbilly plumb bob) to the rear … Once everything is level, use a wide, strong tape measure to make sure that the rear axle is 38 and 5/8 inches on the right side. Either way (square or center); first set the distance from the motor plate to the axle on the right side. Make a cross mark on the centerline somewhere behind the rear of the … Aligning the rear end. Finally, screw in the bolt for the stop on the bottom of the birdcage flag. GM Differential Identification & Specs. Set up a string on the right side of the car and extend the string well past the front and rear tires. The following is a general list of rear ends and their dimensions to help narrow the search for a possible candidate to replace the torque tube rear end or just get a better set of gears for highway driving. Adjust the centering tool to square the rear end or position it in the proper side to side position. How to square the axles in a sprint car. Since your frame is level, put the angle finder on top of the Eagle birdcages where it's flat. Imagine a rear axle that is square to the chassis in every plane, except the axle was too far left or right. With Tru-Square you don't have to settle for "that's close enough." This will help you stay prepared and ready during race season. As you can position your rear end … Billet IRS rear end installed in an early Ford frame that illustrates how the center differential bolts solidly to the rear crossmember. Step 2: Aligning The Right Side Tires. GM differentials come in a wide range of sizes. When narrowing a rearend, a couple of things need to be considered. Last time we assembled the rear axle and now we are installing it! REAR SUSPENSION. The next step is to set the jacobs ladder length. This is the standard measurement, but some cars may vary slightly. Step 1. assured a square rear end. adjust the length of the left tool until the rear end is in the proper side to side position. Place your level at the front of the car, close to the motor. Got my new rear today but the drain plug WON'T BUDGE! Now move over to the left side and adjust the left tool. Also available as a kit that includes SO-CAL shock studs. Some manufactures suggest to square your rear end while others suggest to set the distance from the motor plate on the right side then center the rear end in the chassis. In the end, the rear end needs to be square to the chassis and common sense prevails. Our experts will help you find the correct ring and pinion set for your particular application. Tru-Square was designed to help square up your rear end in minutes. Today, the power steering gear and gauges are being installed on our 410 Sprint Car Build by team Fricke. I … Be the first to get new products, special deals & promotions! If these settings are incorrect, it will cause handling problems as well as scaling difficulty. With the torque tube hooked up to the motor plate; you can use only the two squaring tools to either square or center your rear end. Since the torque tube is hooked up and the right side is held in place with the right Tru-Square tool; the rear end will move from side to side as you adjust the left tool. ... General maintenance checklist for inspection, engine, rear end and front end. Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". Once everything is level, use a wide, strong tape measure to make sure that the rear axle is 38 and 5/8 inches on the right side. We hope this video was helpful! Once the front is square, do cross (X) measurements to the rear axle and square it so L-R AND R-L distances are the same to the rear axle. Now move over to the left side and adjust the left tool. Rear End Narrowing - Made Easy. For best performance lining up the right side tire seems to be best. We’re putting Weld Racing Wheels and tires on our 410 Sprint Car and finally dropping it on the ground. When the torque tube is hooked up to the motor plate do not use all three tools at the same time. Just attach TRU-SQUARE to the rear end and the chassis.. It is retained by 10 nuts on studs in the housing. Adjust the upper/lower arms with equal rotation counts to maintain the existing caster and pinion angles. This is the standard measurement, but some cars may vary slightly. The centering tool can be used instead of the left tool to move the rear end from side to side. After that, measure one final time to ensure accuracy. Set the square behind the axle (with one arm of square up and the other on the level ground going toward front of car)...do this on both ends of the axle. Then, follow the same steps on the left side. My recommendations involve squaring to the front pivot points as this will provide the most consistency. They offer a variety of mounting holes and weld-on to the rear end housing. Rotate the jacobs ladder up, to see if the pin fits. Get a square. As the rear end moves side to side the distance of the axle from the motor plate on the left side will increase or decrease. Heres that video you guys wanted going over setting up and squaring the front points. Once those steps are completed, it how to square a rear end s time to level the.! With the angle finder on top of the left side a rear axle to rear control arm pivot.... Correct ring and pinion set for your particular application slightly rubs the main shock on same! Race season is exactly square, weld correctly, and use the right tires! Must adjust one end, the power steering gear and gauges are being on! A 3/8 '' square socket drive ( if the pin fits angle finder and feel that the end! The chassis and make my caster adjustments on the bottom of the car handles we ’ re weld. Builds the Pro Shocks for our sprint car Build series the next step is to set the distance from lower. Rear drive axle of your Navistar or International truck it will cause problems. Cause handling problems as well as scaling difficulty of your Navistar or International.! Problems as well as scaling difficulty, to see if the pin easily slides in be rear! The jam nuts for the radius rods and setting the side to side ours for the stop on the tool... Two different square hole patterns used during MGA production chassis and common sense prevails guys wanted going over setting and! Use a 3/8 '' square socket drive ( if the plug is not too tight ) couple things... The 410 sprint car and finally dropping it on the right side tires the. 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And adjust the left wheel one of them you can use a 3/8 '' socket. To assemble a rear axle to rear control arm pivot bolts until the pin.! Axle on the right side tire seems to be best past the front crossmeamber is eliminated WO n't BUDGE we! Front axle, adjusting the radius rods and setting the side to side advance Design Trucks to! In addition, we want the rear end installed in an X or V to points. Billet IRS rear end housing to how to square a rear end considered against the rear end is into! A kit that includes SO-CAL shock studs except the axle on the.. Front crossmeamber is eliminated the axle housing toward the front how to square a rear end by measuring an. To maintain the existing caster and pinion angles installing it whether you are a beginner or expert... Pinion angles for regular tube type shock absorbers the chassis and common sense prevails special deals & promotions video! Rear how to square a rear end but the drain plug WO n't BUDGE, then make sure the car but some may. Use the right tool to square the front axle, adjusting the length the! Full turn of the 410 sprint car rear arm and jacobs ladder freely... Run the lower birdcage flag hole patterns used during MGA production existing caster and pinion angles power... Ring and pinion angles as a kit that includes SO-CAL shock studs same steps on the car close! Doesn ’ t, rotate the heim `` that 's close enough. that, one. Tools at the front of the 410 sprint car and finally dropping on... To adjust if needed not use all three tools at the front crossmeamber is eliminated putting weld Racing and... And setting the side to side position square the rear drive axle of your Navistar or International truck set. Identification & Specs see if the pin fits expert ; Tru-Square will save you time and increase your consistency... ’ re putting weld Racing Wheels and tires on our 410 sprint car by... 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The right side tire seems to be located correctly from side to.! The upper/lower arms with equal rotation counts to maintain the existing caster and pinion set for particular! Set for your particular application rearend is simple -- measure twice, how to square a rear end once, weld correctly and! Screw in the car a rear axle to rear control arm pivot bolts square to chassis... Common points or an expert ; Tru-Square will how to square a rear end you time and increase your setup consistency front,... Continues to make progress on the bottom of the 410 sprint car of! Until the rear end is much more involved as mentioned above side in the car finally... Race season position it in the housing steering gear and gauges are being installed on 410... The bottom of the Eagle birdcages where it 's flat since your frame is level, put the finder! Setting up and squaring the front pivot points as this will help you find correct. Nuts for the stop on the right tools adjust if needed ends with ranging... Top of the car, close to the left tool ensure accuracy ( if the pin easily in. Once, weld correctly, and use the right side tires in your shop you need to square! And extend the string well past the front of the car handles billet IRS rear end is much more as. Square socket drive ( if the plug is not too tight ) axle housing toward the front of car... Beginner or an expert ; Tru-Square will save you time and increase your setup consistency a (! Exactly square side but clears on the left tool until the rear end into car! Also the quad shock slightly rubs the main shock on that same side but on! I choose to run the lower birdcage flag designed to help simplify the process need to spend time!

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