Other types, such as digital angle gauges, are far more expensive. Urethane bushings don’t distort like rubber bushings, so they keep the springs in proper position. Coil-spring and coil-over rear suspensions locate the rear-end housing with links commonly known as trailing arms or control arms. In 2003, it was in the United States again, this time from San Francisco to Miami. They come in stock and lowered heights. Get it as soon as Mon, Dec 21. When the Fox Body launched, the Mustang swapped out its leaf springs for coil springs. It turns out that pinion angles are not a Jedi secret, though they differ for each application. Don’t worry about this too much as its integrated into the frame design and isn’t adjustable. That only leaves 1.25 inches, or room to play with wheel backspace/offset and tire sizes— and that’s not much! This four-bar set-up has a weld-in support brace (with integral driveshaft safety loop) for the front of the links and a weld-in support brace for the integrated coil-overs; adjustable panhard bar; and optional sway bar. Rear suspension diagram for VW FOX 2004-on - 5Z . Place jack stands safely under the rear axle to compress the suspension as if the car were on the ground. If you add the transmission angle at 3 degrees to the pinion angle of 3 degrees, it would add up to 6 degrees combined. During wrap-up, the 6 degrees can become 8 or more degrees, which exceeds the maximum allowable range totaling 7 degrees. Let’s be honest, deciding on a suspension system for your SN95 or Fox-body can be pretty overwhelming – especially if you’re not a suspension expert. Still, even with coil springs, the Mustang was often criticized for its “ancient” rear suspension technology. A set of 2.5-inch lowered 800-lb springs were used in the front and a set of 1.75–inch-drop 300-lb coils are assisted by an in-car controlled Air-Lift bag system (to help with the weight of extra fuel). There should not be any visible play between the U-joint and its end caps. They have had a blast at these events, which consist of approximately six days of driving to each destination city along the route and huge parties at each stop that rival the untouchable Hollywood parties you only hear about. Truck Department 951.737.2999. Made in the USA. Plus, you also add the necessary bearings, seals, and shims. https://www.foxstang.com/battery-relocation-in-a-fox-body-mustang These are better than stock, but are not the only designs available. When pulling in and out of driveways at an angle, you will get some binding in the front spring eye. A rigid cradle is bolted to the frame and underbody structure using existing factory bolt locations. 79-93 Fox-Body Mustang 9-inch Rearend Builder $3,872.00 Complete, ready to bolt-in Currie ® 9-inch Rearend for 1979 thru 1993 Fox-body Mustang, Zephyr, Capri and Fairmont The benefits are not only the lower stance; you also get lower roll steer (steering changes induced by body roll), decreased torsional spring twist, decreased lateral movement, and a lower roll center (an imaginary line the body and frame pivot on during body roll). This Tech Tip is From the Full Book, HOW TO REBUILD THE SMALL-BLOCK FORD. Here you can see the basic parts of a multi-leaf spring. 1967-81 Camaro, Firebird, 1968-74 Nova Hydroformed Subframe. This is very unsafe. If you don’t care about an extremely comfortable ride, you can completely do away with flexible bushings and install solid bushings made of aluminum and Delrin. Competition & Street Ladder Bar Package. These angles should add up to a maximum of 7 degrees. 95. We also offer installation services at our Santee, California shop. The next order of business was the suspension and braking. Those needle bearings need to rotate in order for the U-joint to operate reliably and smoothly. There are many different schools of thought in this area of suspension tuning. You’d be surprised how many times you get it wrong using a worn-out balancer or … [Click here to read more...], Parts selection is one of the most important elements of engine building because all parts must operate in concert with one another. or something like an early Chevelle or a GTO, it has a triangulated four-link rear suspension.This type of suspension has coil springs and upper and lower trailing arms (also called control arms).The upper arms are angled to form the triangle that gives the suspension its name. Production passenger cars and basic street cars operate fine with parallel pinion and transmission shaft angles. Rear Suspension. The most common way to lower the rear of a car with leaf-spring rear suspension is to install lowering blocks. FOX Factory GmbH info@foxracingshox.de ph +49 6331 14983-0; Benelux SABMA Suspension Center info@sabma.com ph +32.87.30.63.60; Brazil Dax Bike contato@daxbike.com ph 086 3131-7600; Bulgaria Rom-Eurotrade S.R.L. AEM Silver Brute Force Air Intake w/ MAF (1987-93 5.0L V8) $293.99 $198.99 Add to cart McLeod Racing. At this point, the maximum tolerable angle of 7 degrees has been exceeded. Aftermarket coil springs are available from many different manufacturers. Hot rod shops and seasoned backyard mechanics commonly overlook pinion angles. Rear Suspension Kits Morrison Offers The Widest Selection anywhere. An Edelbrock Performer intake and Holley 670 Street Avenger fed the big 4V heads. The digital SmartTool is more expensive. $12.07 -15%. In the U.S., Ford Motor Company has not used parallel leaf springs in any car line since 1980, but they are still used in trucks. The axle needs to have limited fore and aft movement. You’re either swapping in an AOD, AODE, or 4R70W, or you’re removing and reinstalling one. A mono-leaf spring would only have one leaf. We are on a mission to "Save the Foxes". Give your Fox Body suspension an aggressive stance with a set of performance lowering springs from Ford Racing, Steeda, BBK, and Eibach. It may raise your eyebrows a little, but the C4 Chevy Corvette IRS is lightweight, a completely self-contained unit, and has proven its great potential for street and track use. In this case, you can move the housing and relocate the rear axle mount pads to locate it on top of the leaf spring. This manual is every 1979-93 Mustang exploded part diagram from the original Ford manuals. For example, think of the transmission angle set at 3 degrees down and the pinion angle set up 3 degrees to run parallel with the transmission. In these cases, one end may require a solid bushing and a spherical bearing in the other end. DVS Restorations has done all the homework on adapting Cobra IRS units into 1965 through 1970 Mustangs, including all the custom brackets and modifications necessary for each Mustang year. Kevin didn’t want to change the interior too much, but knew he had to install some high-tech equipment to keep the team on the correct course and out of as much trouble as possible. Position Show All Front Rear Sub Brand Roll Control SuperPro SPF. This proved to be a problem for the Cobra IRS, since the width of a 2000 Cobra R IRS is approximately 65 inches from hub to hub. In fact, the IRS made it onto a few test Falcons back in 1964 because the Mustang wasn’t even available yet. Using only one upper link means that the link and its attaching mount must be extremely strong. The Thunderbird and Cougar IRS subframes are not the same as the Cobra units. The most common link system is the four-link. AirBar lowers the car approximately 2 inches, with a deflated height typically 5 to 6 inches lower than stock. Instead of replacing the upper control arms on your Fox-body with the typical boxed or adjustable arms, a company named Real Speed Parts offers a product called Pro Link. The most common way to lower the rear of a leaf spring car is to install lowering blocks – basically a spacer that goes between the spring and the rear-end housing. See how the main leaf is on top and then curls down. 1970-81 Camaro, Firebird, 1968-72 A-Body Front Coilover Conversion Kit. Ford V-8s have always struggled to make power because they’ve always been limited by factory cylinder head design. Since urethane is denser than rubber, some people feel the ride becomes too harsh, especially when using them in the rear spring eye. VW FOX 2004-on - 5Z . It also needs to have limited travel from side to side. ATV Suspension | FOX Fox Factory Inc. uses cookies to improve your browsing experience on our website. There is an alternative to welding the adjustable perch, too. Rear suspension diagram for VW FOX 2004-on - 5Z . The coil springs and shocks do not attach to the subframe, so you need to fabricate mounts in the receiving chassis. This U-joint is also made of a stronger steel than the standard-duty U-joint. If you ever see Kevin’s Restomod with rally stickers plastered all over it, you can expect to see some expensive exotics close behind and putting some power down to catch up. This design allows one tire to travel and move independently without affecting the other tire. This is an off-road U-joint. At the very least, do some homework to increase your own knowledge before spending your hard-earned money on parts that might not work well together. 3.9 out of 5 stars 16. This picture shows phasing angles that should be used for most leaf-spring Restomods. The 2000 Cobra “R” unit (considered to be the best of the best) has larger 31-spline axles, 3.55:1 gear ratio, Gerodisc hydromechanical limited-slip unit (stronger and designed to handle the more powerful Cobra R DOHC 5.4-liter engine), improved CV Joints, improved upper camber slot location, and harder-durometer rubber frame mounts. This makes lowering a car with blocks very easy. Rear frame supports (adjustable) These improve handling, traction, and all-around suspension performance by eliminating unwanted chassis flex and reinforcing the trailing arm mounts. Leaf-spring bushings come in three types: rubber, urethane, and solid. Disassemble the rear end to clean all metal debris from inside the axle housing, and then reassemble the rear end. It was never intended to bear the load and weight of the vehicle, so the lower shock mount should be beefed up a bit. To reduce the friction and noise, some manufacturers include anti-friction pads between the leaves to improve ride quality for street use. Pinion Angle Adjustment For CoilSpring Suspensions. Real Speed Parts offers adjustable heavy-duty lower control arms to round out a completely adjustable Fox-body rear suspension. 1979-93 Fox-Body Mustang Experts! The Cobra IRS is mounted to a bolt-in subframe. The body is much stronger since the fitting hole is not located near the center. Fox Shock Parts for a sandrail, rock Crawler, KOH, Ultra4, truck, UTV, side-by-side, dune buggy, mini buggy, manx, king of the hammers, 4x4 or Jeep . I am going to go over pinion and transmission angles. Kevin built a custom console to match the footprint of the original one, but it’s large enough to house the sound system, a laptop with GPS Co-Pilot software, a video screen for the front-and rear-facing cameras, and a fire extinguisher. And i do know most exahaust will bolt on except for the most part axle-back. This system has proven itself on the track, and now on the street. Maximum Motorsports rear suspension component kits upgrade the handling of 1979-1993 Fox Body Mustangs through the use of advanced design chassis components. Made in the USA. The spherical bearings offer full range of motion without bind or the possibility of distortion. Leaf springs are not only an easy way to locate the differential housing, but they can also mean the difference between a comfortable or a harsh, uncontrollable ride. All things related to the Fox Body Mustang: Tech articles, fox body history, restoration guides and readers rides. The anti-roll bar assembly includes a large 1-1/4”-diameter, heat-treated ... strut body, creating a durable means of adjusting spring preload and ride height. Pinion Angle Adjustment For LeafSpring Suspensions. It’s completely serviceable, with a zerk fitting located on the body between two of the legs. (Photo courtesy Martz Chassis, Inc.), Bret Voelkel’s ‘69 Mustang is shown tearing up the road course with its Air Ride Technologies AirBar four-link rear suspension and ShockWave front suspension kit. They are designed specifically for Fox Body models just like yours. Each of these builds shows what can be done with both the 351C and 400 … [Click here to read more...], Once you have disassembled the engine, selected the best parts, and finished the machine work, it may seem as if the toughest part of a rebuild is over, but it isn’t. Now that you know how to measure pinion angle, it’s time to find the optimum pinion angle. Autocross Fox Body Mustang Mod List: Engine/driveline. This is something to look for in a spring, since Restomods are meant to be driven as much as possible. The next step up in performance is to replace the rubber spring-eye bushings with urethane bushings. Since the rear end is mounted to the leaf springs, the springs try to change from their typical arc shape to the shape of an “S” as the rear-end housing rotates upward. Total Control Product’s rear suspension system has a right and left lower link, a short lower torque arm, and a Watt’s link mounted under differential housing. Since the car was going to need top-end power to compete with cars that not only have over a 200-mph top speed, but actually drive that fast during the event, Kevin needed to modify the original 351C 4V. Now that you know how to measure pinion angle, it’s time to find the optimum pinion angle. This system has been tested at speeds over 150 mph on Martz’s Mustang shop car. Aftermarket companies offer many different spring configurations. At this point, the front and rear of the car have to be raised evenly. Both angles are equally important when it comes to optimum suspension tuning. Some manufacturers design their systems to produce more or less oversteer than the others. However, don’t forget about the rear half of the leaf spring unit. • 351C-4V closed wedge chamber (bolt-fulcrum rockers) The panhard bar attaches to the axle on one side and the frame rail on the other. Trucks typically have the rear-end housing located under the leaf spring. If you have to run more than a 2-inch block, you should check into getting some lowered leaf springs. Some are better for drag racing than they are for running on a road course. The 3-link design, as well as the four-link, needs some type of side-to-side axle locating mechanism, such as a panhard bar or a Watt’s link. Ford developed … [Click here to read more...], Although transmission installation and adjustment appears straight-forward, you should take an orderly, methodical approach to ensure success. rear control arms are differant for sure. The company information is listed in the Source Guide in the back of this book. Frequent re-fueling stops are a great way to kill time between legs of the race, so Kevin installed a 22-gallon secondary fuel cell in the trunk. This is the standard U-joint. To get the ride height correct, you should fill the fuel tank. The 351C block castings, despite different casting numbers, are all basically the same casting and can all be converted to four-bolt main caps with help from a … [Click here to read more...], Adjusting ignition timing must be performed with a timing light with an accurate harmonic balancer. Kevin would like to thank his wife Joy for finding this car and standing by while he put senseless amounts of money and time into racing his car cross-country for no one’s happiness but his own. This is the Hot Rods to Hell Inc. The Cobra IRS makes the Fox Body Mustang platform handle like a true sports car. However, the hole for the zerk fitting can be a weak area when a lot of torque is applied. Written by Tony Huntimer and Posted with Permission of CarTechBooks. Some rear trailing arms are designed to keep the rear axle housing in a certain position for proper geometry and articulation with a certain degree of bind. 1994-2004 Mustang Suspension & Chassis. Öhlins is the number 1 suspension manufacturer of suspension for motorcycle and cars within aftermarket, OEM and motorsport with over 300 motorsport titles. Front Suspension for 1935-36 Trucks ; Front Suspension for 1938-41 Commercial ; Front Suspension for 1942-47 Commercial ; Front Suspension for 1938-39 Trucks ; Front Suspension for 1940-47 Trucks ; Wheels Our chassis system was designed to give you unprecedented performance. Finding the flat surface on the transmission and the pinion yoke is easy, but there may not be space to place your gauge. Both show that the rack is very close to zero degrees, which means the suspension is loaded correctly. If the car is not level on the rack and resting on all four tires, your readings will not be accurate. Eliminate the wandering feel and improve your straight-line and cornering ability with increased caster/camber angles better suited for today's wider wheels and tires. A spring with more front bias will require more leverage to bow the front half of the leaf spring than the leverage required to bow the rear. $13.80 $ 13. bryce menzies back-to-back v2r overall winner! 1979-1993 Fox Body Mustang Suspension & Chassis Parts. All this is needed, while still allowing the axle to move up and down. The analog gauge on the left can be purchased from most hardware stores. Using a urethane bushing in the front and rear spring eyes increases the transfer of road shock to the car. With the engine turned off, but in gear, physically attempt to rotate the driveshaft clockwise and counterclockwise. All Models Exc. Each has different characteristics, so do your research and choose the best option for your car and the type of driving you’re doing. The way to combat wrap-up is to install a set of leaf springs designed with more front bias. For a car that is set up for handling around corners, the optimum pinion angle is different than if you were setting your car up for serious drag racing. In these cases, one end may require a solid bushing and a spherical bearing in the other end. Another company may offer less front bias (less front spring strength), causing the leaves to wrap up easier under hard acceleration. Here, a straight bar was pressed up against the seal with the magnetic-base angle gauge attached to read the transmission tail-shaft angle. With the exception of all the high-tech gear, Grant steering wheel, and AutoMeter tachometer, vacuum, and trans temp gauges, the interior is all un-restored original and in excellent shape. Like most Fox-body coilover kits, the rear remains a divorced setup, but the unique upper spring perches feature adjustable ride height. One dead end led to another, until he eventually found the man who was the head of the IRS project. Log In / Register Order Status. The trailing arms on a coil-spring suspension typically limit the amount of pinion lift (where the front of the differential tilts upward), so pinion angle can be set at 1.5 degrees down. Many factory suspensions, such as the '78-88 GM G-body (Chevy Monte Carlo and Malibu, Buick Regal, Pontiac Grand Prix, and Olds Cutlass) and Fox-body Mustangs, suffer from severe roll bind. Different spring rates are also available. Purchase fully adjustable aftermarket control or trailing arms. The center and sides are not attached. The rates are determined by the vehicle’s weight, model, year, and performance level. It evolved through a number of sub-models, trim levels, and drivetrain combinations during its production life. The system in this image shows a torque absorber to take out some of the shock caused by hard acceleration and deceleration. A combined pinion angle of 3 degrees and transmission angle at 2.5 degrees add up to 5.5 degrees, which does not exceed the maximum. This is not the easy or preferred method, but it is an alternative for people without welders. The Detroit Speed Fox Body Mustang Track Bar adds a critical link to keep the rear axle stable during hard cornering. This will eventually cause strange drivetrain vibrations that are hard to pinpoint. When it comes to locating the live axle, the concept is basic. There are quite a few aftermarket companies producing lowered rear leaf springs. For this example we used a 10-second street/strip Fox body, that weighs between 2,800-3,200 pounds. The factory 4-link is completely ineffective at locating the axle side-to-side as the suspension arms travel vertically. Position Part Name Part No. To round out the overdrive, Kevin installed a 31-spline 3.50:1 gear set in the Ford 9-inch rear end. The spring effectiveness is affected by bias. The rear half of the leaf spring is responsible for the ride quality. The differential is shown with a torsional load from acceleration. If you run parallel phasing angles like some old-school street rodders have been using, you can easily run into problems. The following is a list of a few of the cars equipped with coil spring rear suspensions: 1979 to present Mustangs; 1965 to 1978 LTDs and Galaxies; 1972 to 1979 Torinos and Rancheros; 1967 to 1988 Thunderbirds; 1965 to 1978 Marquis and Monterey; 1979 to 1986 Capris; 1974 to 1988 Cougars; 1972 to 1976 Montegos; 1978 to 1983 Zephyrs; 1968 to 1979 Lincolns; and more models and years. HOW TO BUILD FORD RESTOMOD STREET MACHINES, The Ultimate Ford Transmission Torque Converters Guide, How to Install Ford C4 and C6 Transmissions: Step by Step, How to Disassemble Ford 4.6L & 5.4L Engines – Step-by-Step, How to Build a 500 Horsepower Ford 351 Cleveland Engine, How to Assembly Ford 4.6L & 5.4L Engines – Step-by-Step, Ford Small-Block Rebuild: Torque Specs, Sequences, and Alignment, Ford FE Engine Intake Manifolds: The Ultimate Guide, Ford Cylinder Heads and Valvetrain Interchange: Small-Block, Ford C4 and C6 Transmission Trouble Shooting Guide, Ford Axle History and Identification: Ford Differentials, Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting, Ford AOD Transmission Installation and Swapping Guide, Ford 9 Inch Differential Guide: Third-Member Assembly, Ford 351 Cleveland Engines: Block Identification Guide, Ford 351 Cleveland Engine Ignition Guide: Timing, 4.6L & 5.4L Ford Rebuild Cheat Sheet: Selecting Parts, 4.6L & 5.4L Ford Rebuild Cheat Sheet: Before You Begin, 351 Cleveland Cylinder Heads Guide: Factory Iron Heads. Mono-leaf springs are laid on the table with the arc facing down, opposite of the direction they’re mounted on a car.
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