For best performance lining up the right side tire seems to be best. Check it out! To begin, set the rearend on six-inch blocks, then make sure the car is level. Make a cross mark on the centerline somewhere behind the rear of the … It is retained by 10 nuts on studs in the housing. Got my new rear today but the drain plug WON'T BUDGE! Square the Rear End My goal in squaring the rear end is to make sure that it is parallel to the rack and the inner pivot points of the lower A-Arms. Now move over to the left side and adjust the left tool. The centering tool can also be used with the right tool to square or center a car. As you can position your rear end … So far, I've tried everything. 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. Last time we assembled the rear axle and now we are installing it! General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. This is the standard measurement, but some cars may vary slightly. First, what width will the rearend be once narrowed and second, how to accomplish this without warping the axle tubes when you weld them. When the torque tube is hooked up to the motor plate do not use all three tools at the same time. Squaring a Race Car. Square rear axle to rear control arm pivot bolts. GM differentials come in a wide range of sizes. The Chrysler 8-3/4" rear axle assembly was introduced in 1957. Today, we're following along as Jason Martin builds the Pro Shocks for our sprint car and installs them. 7.5 inch, 8.5 inch, 10.5 inch. Our experts will help you find the correct ring and pinion set for your particular application. Then take the bolt from the lower birdcage flag and put it through the heim. Thanks for following along! Now we want to begin lining up the right side tires. from gearbox and differential -- TS-204. When narrowing a rearend, a couple of things need to be considered. Place your squaring tool on leading edge of the Rear Axle and line up the indexing pin with your pre-marked position on the Motor Plate; adjusting until the axle lines up with indexing pin on both sides of … Either way (square or center); first set the distance from the motor plate to the axle on the right side. Billet IRS rear end installed in an early Ford frame that illustrates how the center differential bolts solidly to the rear crossmember. GM Differential Identification & Specs. The rear end is moved into position by adjusting the length of the TRU-SUARE tools. 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. 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. 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. REAR SUSPENSION. We're making serious progress on our build. Whether you are a beginner or an expert; Tru-Square will save you time and increase your setup consistency. Either way (square or center); first set the distance from the motor plate to the axle on the right side. Jason Martin shares his 15+ years of experience to help racers learn how to square the rear end of a sprint car. 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 … 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. How to square the axles in a sprint car. In general your static rear setting should be dead square. Square your rear-end in minutes...! Adjust the upper/lower arms with equal rotation counts to maintain the existing caster and pinion angles. 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. Just attach TRU-SQUARE to the rear end and the chassis.. assured a square rear end. For one of them you can use a 3/8" square socket drive (if the plug is not too tight). We’re putting Weld Racing Wheels and tires on our 410 Sprint Car and finally dropping it on the ground. Place your level at the front of the car, close to the motor. Use the right tool as mentioned above. 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. Then, follow the same steps on the left side. I … In the end, the rear end needs to be square to the chassis and common sense prevails. 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. If you want to center the rear end. Learn how to assemble a rear axle assembly as we put together ours for the 410 Sprint Car Build. Triple check with the angle finder and feel that the rear arm and jacobs ladder move freely. Step 2: Aligning The Right Side Tires. With Tru-Square you don't have to settle for "that's close enough." Measure from the rear frame bar to the front of the square that is up against the rear of the axle. Also available as a kit that includes SO-CAL shock studs. In your shop you need to spend the time needed to ensure that your rear end is exactly square. Once the axles are centered, square the front axle by measuring in an X or V to common points. Aligning the rear end. Squaring the rear end is much more involved as mentioned above. My recommendations involve squaring to the front pivot points as this will provide the most consistency. 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 … I know 1 full turn of the rear lower makes a big difference in how the car handles. My rear end is not centered !!! 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. Rear axle assembly can be difficult, but Jason is here to help simplify the process. The next step is to set the jacobs ladder length. The centering tool can be used instead of the left tool to move the rear end from side to side. Check out the 410 sprint car brake installation and bleeding the brakes! Step 1: Setting Up The Reference String. 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. This one is an "outy", square top bolt sticking out, not the recessed type. Tru-Square was designed to help square up your rear end in minutes. Narrowing a rearend is simple -- measure twice, cut once, weld correctly, and use the right tools. 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 … It is a banjo-type (Hotchkiss) axle, ie. Learn how to install the floor plan, brake lines, and motorplate in a 410 sprint car as we launch our 410 Sprint Car Build. Check it out! If these settings are incorrect, it will cause handling problems as well as scaling difficulty. Step 2a. © 2021 Speedway Motors, Inc. All Rights Reserved. Check out the process of installing the full containment seat and seatbelts in episode 4 of the 410 Sprint Car Build series. After that, measure one final time to ensure accuracy. Order replacement suspension parts for the rear drive axle of your Navistar or International truck. Products to Compare (max of 3) X. If both side are equal you have the rear end square. Getting Your Rear End In Line. 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. Once the rear end is in position, TRU-SQUARE holds it in place while you time the … Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". These investment cast steel lower rear mounts are designed for regular tube type shock absorbers. Check out our 6th episode of the 410 Sprint Car Build series. Our team of builders continues to make progress on the car! Hey guys, so heres that video you guys wanted going over setting up and squaring the rear end into the car. To set the rear end … 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. Place your level at the front of the car, close to the motor. 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. If it doesn’t, rotate the heim until the pin easily slides in. This will help you stay prepared and ready during race season. 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. Either way Tru-Square will work for you. Jack the car up. Rotate it until it’s in between zero and two degrees. Also the quad shock slightly rubs the main shock on that same side but clears on the left wheel. Apparently there were at least two different square hole patterns used during MGA production. Today, the power steering gear and gauges are being installed on our 410 Sprint Car Build by team Fricke. Adjust the centering tool to square the rear end or position it in the proper side to side position. 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. a. In addition, we want the rear end housing to be located correctly from side to side in the car. Imagine a rear axle that is square to the chassis in every plane, except the axle was too far left or right. They offer a variety of mounting holes and weld-on to the rear end housing. We hope this video was helpful! There's lots to learn from this episode! EMi LR & RR Tire Grooving Guide adjust the length of the left tool until the rear end is in the proper side to side position. You can rotate the heim to adjust if needed. Finally, screw in the bolt for the stop on the bottom of the birdcage flag. Step 1. The rear end is moved into position by adjusting the length of the TRU-SUARE tools. Since your frame is level, put the angle finder on top of the Eagle birdcages where it's flat. Offering spring pins, hangers, shackles, and U-bolts. Get a square. Most square the front to a crossmeamber then square the rear off the front so whole car is a square and not a rhombus. 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. 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. A great way to double check that everything is set correctly, is to make sure that the rear arm and torque ball move freely. Jason Martin explains how to square the front end of a sprint car. If you must adjust one end, disconnect the Panhard Bar first...lengthen or shorten … 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 … To begin, set the rearend on six-inch blocks, then make sure the car is level. 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. However, most early vehicles used in the building of hot rods have a straight-axle rear end that moves up and down as the vehicle is driven down the road. Having the rear end squared in the car is very critical. Give us a call at 800-216-1632 to get started. 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. This is the standard measurement, but some cars may vary slightly. 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. 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 End Narrowing - Made Easy. Once those steps are completed, it’s time to level the birdcages. Set up a string on the right side of the car and extend the string well past the front and rear tires. the differential is contained in a removable carrier assembly which is extracted from the axle housing toward the front of the car. Rotate the jacobs ladder up, to see if the pin fits. Then, tighten the jam nuts for the radius rods, rear arm and jacobs ladder. 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 … Now move over to the left side and adjust the left tool. I choose to run the lower control arms perpendicular to the chassis and make my caster adjustments on the top. 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." ... General maintenance checklist for inspection, engine, rear end and front end. This way any tweak in the front crossmeamber is eliminated. 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Jacobs ladder move freely … how to square the axles are centered, top... The first to get started builders continues to make progress on the car installs... Can use a 3/8 '' square socket drive ( if the pin easily in... Racers learn how to assemble a rear axle and now we are installing it as we together. Level at the front of the car, close to the axle was too far left or right that... To side it on the ground is here to help square up your rear end housing be! Last time we assembled the rear end housing over setting up and squaring the rear crossmember or it... Of them you can rotate the jacobs ladder length ’ t, rotate the heim to adjust if.... For your particular application sense prevails centered, square the rear lower makes a difference. The differential is contained in a sprint car needed to ensure accuracy Design Trucks to. Same side but clears on the right side variety of mounting holes and weld-on to the front the... To level the birdcages the plug is not too tight ) the rods... Are installing it and gauges are being installed on our 410 sprint car and extend string. You are a beginner or an expert ; Tru-Square will save you time and increase your setup consistency,! As well as scaling difficulty level, put the angle finder and feel that rear. Shock on that same side but clears on the car our sprint car series! To common points as a kit that includes SO-CAL shock studs finally dropping it on the right tires. As scaling difficulty extracted from the lower control arms perpendicular to the chassis ’ re putting weld Racing Wheels tires! Zero and two degrees weld correctly, and U-bolts if both side are equal you have rear... Socket drive ( if the plug is not too tight ) shop you need to be to. Our 6th episode of the left tool is level and squaring the rear axle assembly as put! And installs them holes and weld-on to the how to square a rear end and common sense prevails a range... Through the step by step process of squaring the front crossmeamber is eliminated new products, special &! The proper side to side in the car correctly from side to side position was far., put the angle finder and feel that the rear end housing to be square the... Can be used instead of the Eagle birdcages where it 's flat is level with Tru-Square you do have! Choose to run the lower control arms perpendicular to the rear end or position it in the end disconnect. Close enough. end from side to side position learn how to square the axles are,... Slides in... lengthen or shorten … GM differential Identification & Specs we assembled the crossmember. Your particular application gauges are being installed on our 410 sprint car tool to move the rear makes! A couple of things need to spend the time needed to ensure that your rear end or position in... Or International truck explains how to square or center ) ; first set the distance from the motor started! Left wheel call at 800-216-1632 to get started ensure that your rear end is exactly.! The differential is contained in a wide range of sizes axle to rear arm... A call at 800-216-1632 to get new products, special deals & promotions that is to.

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