Don't ask them to act as springs (unless you're stuck with the dilemmas I presented in #1 or #2). For these two reasons we recommend running a longer lower spring on coilovers. 2 1/2 ID Coil Over Springs. How To Choose. The upper mount is a direct bolt-in and requires no cutting, welding or fabrication utilizing a 2-1/2” coil over spring. A solid-axle rear suspension is a bit more forgiving, because the shocks are bolted directly to the rearend housing. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance. Rear coilover shocks have always been a good way to add a lot of adjustability and tuning to the rear of a drag car but few people understand the process to installing them and setting them up. Remember this rule when selecting spring rates:. The Drag Race spec coilovers are specially tuned for the needs of drag racers, and feature special valving and spring rates. Without helpers, the main spring may not re-seat properly and will cause a sudden change to that corner weight/height. I hear people all the time attempt to compensate for wrong spring rates with shock valving. High spring rates are essential in taming the weight of a 3900lb Lexus RCF. Lane Carey pulling the front wheels on stock bias ply tires in the F. just need to measure your springs, see what it weights and calculate a spring rate. When choosing coilovers with the correct spring rate for the front of your car, you will want to first have the vehicle at ride height so the shocks are positioned within the aforementioned small 3- to 4-inch window of travel. So what are the ins and outs of tuning your suspension for drag racing. I see no reason to run a higher rate spring on one side accept for compensation on what is really happening. I typically use a 125 spring on cars say 3200 lbs and under. Its trailer trashy, cheap and dirty but it works for alot of the "poorer" Sport FWD competitors. The most popular leaf spring race cars are Novas, early F-body Camaros and Firebirds, early Mustangs, most Mopar muscle cars, and S-10/Sonoma trucks, but can they compete with their four-link peers? That’s the biggest question. With proven performance on the drag strip, the Ksport Version DR system will reduce your E. That means that each front spring takes 200lbs of pressure to compress one inch. Single Adjustable: The less expensive units are Single Adjustable shocks. front and rear. If you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximize weight transfer to the rear and therefore onto the rear tires. 99 the Blox Drag Coilovers prove themselves time and time again to be a solid option for the racers that want solid performance on the drag strip at a reasonable price for their wallet. From developing lightweight brake components, directional calipers and superior brake pad compounds, they are now proud to introduce the …. Fit's the front 64-. A higher number will produce a stiffer ride, but better handling. Think of a coil spring as a big "slinky" toy. May 2000 -Rear sway bars, wheel & axle offsets, consistant handling, gear ratio & RPM. For handling performance we recommend a 175# spring. What is spring rate? Spring rate refers to the amount of weight that is needed to compress a spring one inch. SPOHN G-BODY REAR COIL OVER KITS (78-87) Available with single or double adjustable shocks $590 to $790. At this point the load on the spring is 400 lbs. 0" Fox Performance series shocks and deliver a very low quality ride. I see other issues as far as different weight left to right front to rear. 44 x 500R = 1220 Divide that answer by the correct (T) value in chart 1220 ÷ 2. They can be used for optimizing your suspension for street, drag, drift or scca. Learn how to properly setup your coilovers for the best starting point of a completely adjusted and fine tuned suspension. DRAG RACE COILOVER SHOCKS. One can sort of guess but knowing the actual ratio is required for the math. I have anti roll bar which is not good to use with moroso drag springs because of different spring rates. Modern ride quality and handling for early Mustangs, Falcons, Cougars, Comets, Fairlanes and other 60’s – 70’s Ford, Mercury – AMC/AMX and Chevrolet products. The overlap extends over the high stress area of the spring emulating a parabolic type spring. » Available in 125#, 150#, & 175# Rates Fitment: UPR front, rear coil over kits and any coil over kit using a 2. If the car is not really heavy, you'll probably find the 175lb stiff for drag racing too. The "motion ratio" is the mechanical advantage (lever ratio) that the wheel has over the spring in compressing it. If you have a choice of spring rates, run the stiffest ones you have. SW's strut front frame package is designed to simplify installation for the do-it-yourselfer. LOVELLS 350 mm Rear Springs-PAIR 400 lb Fixed Rate Spring 350 MM ride height measured from center of wheel hub to lip of fender+-5MM (5mm each way dependant on vehicle accessories and build. Roller suspension improves road racing lap times, drag racing 60′ times and Street Performance. For drag racing and street/strip applications we recommend a 150# spring. Our DRAG-LAUNCH kits are engineered to do one thing: provide maximum traction to the drive wheels, front or rear, import or domestic. Don't worry Don, I'm not going to beat you up. Almost any aftermarket suspension company that makes coilovers can piece together a kit for you if you give them the right dimensions. These double adjustable twin-tube shocks have 324 valving options with 18 adjustment positions for compression and 18 adjustment positions for rebound. It is easier to achieve handling and performance with a lower spring rate and a "stiff" stabilizer bar or shock. Finding out the optimal rear spring rates will mostly be a matter of how much you want to vary the dynamic ride height in the back. With easily accessible adjustment knobs for fine tuning your compression/rebound and separately adjustable ride height, having a performance coilover system couldn’t be any easier. We manufacture and distribute the world famous Caltracs traction bars, Split-Mono Leaf spring kits as well as CR Series 9 Way Adj Rear Shocks. i have strange fronts and double adjustable strange rears. Normally, I set my bikes up with the same suspension geometry as a '91-'92 GSXR 1100 and use a 550 lb. For street use, I suggest increasing the front spring rate to a minimum of 300# and more likely 350#. The spring rates and internal valving of the ExV dampers have been completely refined for excellent ride quality and sports driving. Drag racers can properly set-up their suspension, which is often overlooked, by adjusting their vehicle s ride height and corner weights to compensate for front end lift and rear end squatting. 2 1/2 ID Coil Over Springs. BC Racing steps up again to provide a 2-Way adjustable Coilover with a remote reservoir at a great price. Any help would be appreciated. You can also order help springs as part of a complete coilover kit. Then there's the added convenience of the rear shocks remote preload adjuster on Select Models, especially handy for those occasional two-up. The D2 DRAG Series suspension kits are designed to help you reduce your 1/4 mile time through the use of drag-specific valving and spring rates which increase your car's traction properties. Top 3 Drag Suspension Coilovers for FWD Honda / Acura. I use 450# springs on the front and 350# springs on the rear for road course racing. Everything was mounted on the car, but besides the car being loaded on and off the trailer to have 3 dyno pulls, the coilovers have no miles. Coil Spring Technical Information Coil springs are the most common used spring in most all motor-sports today. Ford Mustang 10 Inch Coil Over Spring These are the same 10 inch Coil Over Springs we include in our Coil Over Kits and Tubular K-member Kits. For these two reasons we recommend running a longer lower spring on coilovers. Normally, I set my bikes up with the same suspension geometry as a '91-'92 GSXR 1100 and use a 550 lb. SPRING RATE CHARTS The charts below are a general guideline for selecting spring rates. Tuning Front Suspension with Spring Rate. Having spent most of my years drag racing in muscle cars with coil springs, I decided to contact John Calvert (from Calvert Racing Sus-pensions) to get some ideas on the latest technology in making rear-wheel-drive cars with leaf-spring rear suspensions hook, even though the same old issues still exist of setting pinion angle, preload, getting. Just installed a set of these on my own GN on 11-24-12. 3k rear these numbers dont make sence to me. Single Adjustable: The less expensive units are Single Adjustable shocks. Buy BC Racing BR Type Coilovers (A-34-BR) for a 1997-2001 Acura Integra (Rear Eye) DC2. At Integra Racing Shocks and Springs, we bring years of racing knowledge to the products we sell. The shocks are JRI's Sportsman series. Read how tuning your car for the track can. in the rear. Raising the spring seat to. Street driving, drag racing, autocross, and the open-track: an MM Coil-over Kit will improveyour 1979-2004 Mustang's rear suspension. The most popular leaf spring race cars are Novas, early F-body Camaros and Firebirds, early Mustangs, most Mopar muscle cars, and S-10/Sonoma trucks, but can they compete with their four-link peers? That’s the biggest question. High Rear Spring Rates: If the spring rate at the rear of the car is too high, the car tends to have oversteer handling characteristics, especially on throttle applications at corner exits. Specially designed spring rates allows for a stiffer rear spring to allow you to put power down to the pavement quicker. AFCO racing and performance parts began over 30 years ago with a simple need for better suspension. Drag racing, circle track, muscle car and high performance. When in doubt, choose a lower spring rate. BC Racing steps up again to provide a 2-Way adjustable Coilover with a remote reservoir at a great price. This car is mainly a drag car, but i do want to drive it on the street a little and maybe try it on a road course if I find the time. 1982-2000 Camaro/Firebird Viking Rear Coilovers Founders Performance. A detailed explanation of how coilover springs work, how to calculate your spring rate, how to fix incorrect springs and how to set up your coilover springs by Ben Brazda, owner of Filthy. For street use - start at setting 5 and adjust toward 11 to reduce rebound or adjust towards 1 to increase the rebound rate. We ended up with a recommended 375 lb spring for the rear and a preload of 0. Express shipping and best service on BC Racing V1-VM Coilovers for Nissan Cefiro A31 (88-94), from official BC Racing Suspensions distributor. "For the rear, you'll see everything from 65 pound to 200 pound springs on a 12-inch long shock up to a 14-inch long shock. At Integra Racing Shocks and Springs, we bring years of racing knowledge to the products we sell. Easily accessible adjustment knobs allow for fine tuning your suspension's compression and rebound. I typically use a 125 spring on cars say 3200 lbs and under. The car will see more track duty than street. When choosing a spring, you will also have to consider the spring rates. Pit Stop USA is The Online Motorsports Superstore! We have auto racing springs from AFCO Racing Products, Eibach, Hypercoils, Landrum Spring Service, Carrera / QA1 Motorsports, Pro Shocks Pro Springs and Suspension Spring Specialists. The purpose of non-linear springs is to provide more compliance in the suspension over rough surfaces. For drag racing - Start at 5 on the rebound setting - If using a 4-link rear ends, start at setting 7 on the rebound adjustment. Check out our entire inventory of drag racing shocks. Can someone explain the significant disparity between the front and rear rates?. Drag Kit Includes: Rear Split Mono Leaf Springs: The Split-Mono leaf spring overlaps 12", extending 6" on each side of the axle tube. Team Z Motorsports components are featured on and under some of the fastest street and strip cars in the country. "Drag springs" are simply long springs with a low spring rate. Most of our 4-links are sold in complete rear suspension packages. Other spring rates are available up to 350#, call to place orders with custom spring rates. Tire clearance is not a good reason to raise a vehicle. JEGS lightweight aluminum Coil-Over Shocks are double adjustable and suitable for almost any application. What's the best off the shelf drag launch springs. Greatly improves 60-ft times and high speed stability. Then at the top of the page there is a link for the spring rate calculator. When choosing a spring, you will also have to consider the spring rates. So if you choose a 8K spring and dampening rate, you can go as high as a 10K spring and as low as 6K with the perfect dampening rate. Pedders 90/10 Drag Racing Strut (for motorsport use only) 1385R Compression Rates are designed to help transfer weight from the front of the car to the rear. Without helpers, the main spring may not re-seat properly and will cause a sudden change to that corner weight/height. Corvette Shocks and Coilovers Corvette Coilovers - Drag Racing FeatherLight Generation Coilovers - Pfadt Racing : 1997-2013 C5, C6 & Z06 Following in the footsteps of the recent launch of our premier Double Adjustable coilover the Feather Light Generation DAs, we are announcing the little brother with many of the same. Street driving, drag racing, autocross, and the open-track: an MM Coil-over Kit will improveyour 1979-2004 Mustang's rear suspension. 2 1/2 ID Coil Over Springs. Generally, rear springs are anywhere from 3 to 4 times stiffer than front springs?! This comes as a surprise to me as I always thought that front springs were much more stiff than rear springs as they had to support the oscilating mass of the engine. These springs have a very low rate and collapse under the car's weight. Today, we're a manufacturer known for leading the industry with new, innovative and winning engineered parts for racing and performance suspension, exhaust, brakes and cooling. This works well for most applications and represents a good starting point for nearly all. The overlap extends over the high stress area of the spring emulating a parabolic type spring. Suspension superstore. has the finest springs available today. this is for improved handling, not Track/Race use…. Our race-proven drag coilovers feature a 6061-T6 aluminum construction, corrosion resistant shock bodies, and retain 36 ways of adjustment. Don't worry Don, I'm not going to beat you up. Having spent most of my years drag racing in muscle cars with coil springs, I decided to contact John Calvert (from Calvert Racing Sus-pensions) to get some ideas on the latest technology in making rear-wheel-drive cars with leaf-spring rear suspensions hook, even though the same old issues still exist of setting pinion angle, preload, getting. BC Racing BR Type ADJUSTABLE Coilover for 92-00 LEXUS SC300/SC400 - (C-15) NEW! Brand new Description The BC Racing BR series coilovers by BCRacingPower. Torque arm, with a shackle link to the frame forward of the rear axle. Rear Spring Rate: 7 kg/mm (392 in/lbs). What's the best off the shelf drag launch springs. Then at the top of the page there is a link for the spring rate calculator. What is spring rate? Spring rate refers to the amount of weight that is needed to compress a spring one inch. QA1-TC-1958-P 12 position single adjustable Stocker Star drag racing shocks. The Tuner Series. MM coil over kit on all 4. There has been a theory that spring rates change (pounds per inch of compression). Aside from considering the stiffer Drag Coilovers - The direction I am going for now is a slightly higher front [rather than higher rear] for [hopefully] better weight transfer. Drag racing, circle track, muscle car and high performance. The hard work culminated into a shock that is highly responsive, consistent, and can be easily adjusted to adapt to slight changes in atmospheric conditions. Accessories Decals. RedS13Coupe wrote: I'd say going with autoxfil's suggestion of coilovers and trading/testing spring rates on forums would be your best bet otherwise you are gonna have to know wheel loads, roll rates, roll axis to CG height, buncha random stuff like that to calculate how much it rolls under load and how much you want to let it. Other forms of motorsports use the spring frequency as a profile for each type of racing involved. Progressive (variable rate springs): These springs are sometimes called variable Rate springs. For the back, the spring rate calculator recommended a 200 lb spring and a 1. With proven performance on the drag strip, the Ksport Version DR system will reduce your E. 4 kg/mm | 246 lb/in s14 Coilovers Apexi N-1 Coilovers. Outrace the competition in your drag racing events with our 8300 Drag Double Adjustable Coil Over. They include the 4-link with frame and housing brackets, coil-over rear shocks with springs rate-matched to your application and a choice of a Panhard Bar (for street use) or diagonal link (race). For those of you who want to do your own spring rate calculations, there are some good online resources for this including Eibach's suspension worksheet, which does an excellent job of explaining the different measurements required and how these allow you to calculate key variables including Motion Ratio (the mechanical advantage or lever ratio that the wheel has over the spring in. Enter your suspension measurements in the white boxes below. If we find the calculated Spring Rate with a 2. 5", and 3" ID coilovers, made with extremely linear rate as well as the most amount of stroke in the industry. Long stroke & long spring enable to absorb chassis vibration & bear extreme G-force when turning. #1 Best Bang for the Buck: Blox Pro Series Drag Coilovers. Think of a coil spring as a big "slinky" toy. Over 10 years of Research & Development involved in the design of the spring proprietary blend of spring steel. Some teams in American late model racing prefer the single leaf rear suspension. The higher the spring rate and shorter the spring, the less movement you will get from your suspension. AFCO Chassis and Suspension parts in-stock with same-day shipping. Carefully chosen spring rates help distribute weight more optimally when launching for improved sixty-foots and quarter-mile times. Mainly want to set it up for drag racing. Multiply that answer by the current spring rate 500 lb/in 2. Rear Spring Rates For Drag Racing? Best of 1. has the finest springs available today. D2 Racing is a world leader in suspension applications including their world famous coilovers, new patented air suspension, affordable lowering springs and much more!. Tuning Front Suspension with Spring Rate. The in-house Viking engineering and product development team consistently push beyond the forefront of technological advancement and quality in suspension systems and components. *Yellow fields denote calculated cells; you do not have to enter values in them Click here to download the spring rate calculator in an Excel format. Viking Performance specializes in high quality performance shock absorbers, high-travel coil springs, rod ends, spherical bearings and related suspension components. From developing lightweight brake components, directional calipers and superior brake pad compounds, they are now proud to introduce the …. "Rear suspension members may also create leverage against the rear coil springs and affect wheel rate. Re: What's the best drag setup for Leaf spring suspension? with a spring-over setup I could use a couple of offroader tricks rather than ladder bars. In drag racing, softer springs are typically chosen because they will allow your Mustang to transfer weight to the rear wheels, enhancing traction. Drag Racing Axles, Ford 9 inch Rear Ends, Drag Race Struts, Drag Racing Shocks, Racing Axles, Drag Race Brakes, Rear Axles, Dana 60, Ring and Pinion. 5", and 3" ID coilovers, made with extremely linear rate as well as the most amount of stroke in the industry. I'm ordering a four link and need to know ASAP so i can i get it shipped. Figure 3: Stock RCF Rear Suspension with "Divorced" Rear Springs The main problem with a divorced spring rear suspension is the inability to adequately increase spring rates in the rear due to the reduced motion ratio of the inboard spring location. 2019 *** Each BLOX Racing coilover system is designed with specifically matched spring rates and shock valving to offer enthusiasts unparalleled handling characteristics, while maintaining suitable ride comfort and quality. Many spring rates are available, from moderately soft to extremely stiff, in 25 lb/in. The Watts linkage or panhard bar arrangement is best for lateral location, and allows adjustment for rear roll centre height. » Available in 125#, 150#, & 175# Rates Fitment: UPR front, rear coil over kits and any coil over kit using a 2. We want you to be 100% happy with the products you got. If you have adjustable rear shocks, dial up the compression damping. Slingshot Shocks $ 1,999. A progressive-rate spring allows a single spring to exhibit multiple spring rates. For a Drag Radial setup, is it better to have a soft spring to support the car like a 100lbs/inch spring compressed 7 inches, or a firm spring such as a 350lbs/inch spring compressed 2 inches?. The hard work culminated into a shock that is highly responsive, consistent, and can be easily adjusted to adapt to slight changes in atmospheric conditions. There has been a theory that spring rates change (pounds per inch of compression). Torque arm, with a shackle link to the frame forward of the rear axle. Dampening settings may vary a bit if you have SS coilovers and/or the 7k/6k spring rates. Megan Racing Lowering Springs - RSX Base/Type S 05-06 Megan Racing Performance Lowering Springs are constructed of SAE 9254 Cold Wounded Steel, one of the strongest materials available. Blox Drag Series Coilovers - 92-00 Civic / 94-01 Integra ***PREORDER - ETA LATE AUG. Now in stock and shipping, D2 Coilovers and Air Suspension for 2016+ Civic Sedan, Coupe and Hatchback. After hundreds of hard drag launches during testing, spring rates and damper lengths were chosen to allow for extra front end lift and rear end squat. We like the 4 link rear suspension because of its ability to properly locate the rear axle no matter how soft we want to make the spring. I am looking for options on what people have used front and rear for spring rates, on street driven cars. We specialize in lowering kits including coilovers, air ride kits, lowering springs, and more. I wanted to start this thread to see who out there is using leafs and in the end find out how they are working for everyone. BC Racing Coilovers for Megane RS III 250/ 265/ 275 (BR Series) BR Series Street and Circuit Coilover Pillowball upper mount Camber adjustable top mounts Aluminium top plates 30 way adjustable damping Adjustable spring platform Height adjustment via bottom mount to retain full damper travel Bearing mounted upper front spring platform Dust boot to protect damper seals * some features are. and 60 ft times. 4-Link Rear Suspension Packages. These monotubes have 30 levels of adjustment which simultaneously adjust rebound. Porsche 993 JRZ Pro Coilovers with Reservoirs JRZ Pro Coilovers - 3-4k Miles on them - Double adjustable RS Pro units with 500lbs Front & 700lbs. Therefore, a typical design problem is formed. don't know of any coil springs designed directly for a s-10 for drag racing. Bump Springs Designed to replace rubber bump stops, Swift bump springs are engineered to utilize a higher amount of shock stroke travel via a consistent linear rate. QA1-TC-1958-P 12 position single adjustable Stocker Star drag racing shocks. Lane Carey pulling the front wheels on stock bias ply tires in the F. This works well for most applications and represents a good starting point for nearly all. would i be looking for a faster rebound shock up front and lower spring rate in back? really appreciate the help!. Here's how spring rates work: Say you have a front rate of 200lb/in. Figure 3: Stock RCF Rear Suspension with "Divorced" Rear Springs The main problem with a divorced spring rear suspension is the inability to adequately increase spring rates in the rear due to the reduced motion ratio of the inboard spring location. THE PHYSICS OF RACING. Easily accessible adjustment knobs allow for fine tuning your suspension's compression and rebound. 25" in the front and 0. Buy MAZDA RX2 / CAPELLA 1970-1978 XYZ Racing Super Sport Coilovers - Rear Only with Free Delivery from PSR featuring 5 Year Warranty, 30 Way Adjustable Dampening and 5-way adjustability: Spring, Body, Bump, Rebound and Camber. Arm above the spring, mounted to the same bolt that the leaf spring is bolted on with. Find Racing Springs and get Free Shipping on Orders Over $99 at Summit Racing!. Front Shock Adjustment Procedure (Aluminum Body). - Spring Rate: 10kg Front / 5kg Rear - 15 Levels of Adjustable Damper Strength - Aluminum Brackets paired with rubber bushing top mounts - Rubber Dust Covers - Adjustable Ride Height - Conservative Spring Rates. 84 at 139 MPH with Opentracker products. Whether you are looking for a luxury ride or a sport tuned performance suspension, the 2005-2014 Ford Mustang BR Series Coilovers with Swift Spring Upgrade (E-09-BR-SW) are the right choice for your vehicle. some people have posted to run stock shocks up front and stock rear springs out back. In reality, springs support the vehicle and shocks can only dampen the springs' movements, slowing down. The coilovers are treated with zinc electroplating to combat corrosion. Or maybe you just want to lower your stance for the show. HOTCHKIS SPORT SUSPENSION SYSTEMS, PARTS, AND COMPLETE BOLT-IN PACKAGES. Megan Racing coilovers have springs that are made of SAE-9254 Steel, and are tested over 500,000 times by compression inspection. Features; Upper Mounts are Finished in Black Oxide. The "motion ratio" is the mechanical advantage (lever ratio) that the wheel has over the spring in compressing it. Read how tuning your car for the track can. Improvements to the stock suspension can be targeted to road racing or drag racing. With our extensive range of motorsport spring sizes and rates—our ERS double-spring system is unsurpassed in performance and flexibility. Some teams in American late model racing prefer the single leaf rear suspension. Do the job correctly and alter the outer or inner fender panel, as necessary. Suspension Basics and Drag Racing Dynamics March 12, 2015 by Muscle Car DiY This chapter explains the basic physics occurring on the starting line when you launch your car, along with why it does (or doesn't do) what it should. Tokico D-spec front struts and Bilstein shocks in the rear. Custom suspension kits are our specialty. -Optional SWIFT Spring upgrade available -Signature Series comes preset with spring preload recommended ride height out the box Valving and spring rates custom-built to your application. Coil springs support the weight of the vehicle and allow the body to move up and down. The package is pretty compact compared to old-school spring and shock suspension systems. Our race-proven drag coilovers feature a 6061-T6 aluminum construction, corrosion resistant shock bodies, and retain 36 ways of adjustmen. Re: What's the best drag setup for Leaf spring suspension? with a spring-over setup I could use a couple of offroader tricks rather than ladder bars. In all racing events & road condition Rally Cross is the most aggressive one. DRAG RACE COILOVER SHOCKS. Rally Asphalt. Since 1986 Suspension Spring Specialist, Inc. Torque arm, with a shackle link to the frame forward of the rear axle. At Integra Racing Shocks and Springs, we bring years of racing knowledge to the products we sell. When in doubt, choose a lower spring rate. Spring Rates Recommendation (Fortune Auto 500 Coilovers) I am about to order coilovers and need some help with spring rate recommendations for the Fortune Auto 500 Coilovers for my 2007 STI. "The Trick Springs have a lower spring rate and are a taller. Öhlins is the number 1 suspension manufacturer of suspension for motorcycle and cars within aftermarket, OEM and motorsport with over 300 motorsport titles. Or maybe you just want to lower your stance for the show. Gravel Rally damper is mainly design for Rally Racing or Rally Cross. As the spring is compressed, the coils on the tightly wound side will collapse first, coming into contact with each other. BC Racing H-02-BR BR Type Coilovers BC Racing BR Type Coilovers (H-02-BR) for a 00-05 Golf IV, 99-04 Jetta IV and 98-10 New Beetle. I was cruising parts4vws. Shop Drag Racing Coilovers and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Many Rates and Lengths Available for Front or Rear Coil-Over Shocks/Struts; Price is for a pair of springs (2) Since there are many options for spring lengths and rates / Please Call or Email us to order Springs. Roller suspension improves road racing lap times, drag racing 60′ times and Street Performance. Pit Stop USA is The Online Motorsports Superstore! We have auto racing springs from AFCO Racing Products, Eibach, Hypercoils, Landrum Spring Service, Carrera / QA1 Motorsports, Pro Shocks Pro Springs and Suspension Spring Specialists. Variable rate (progressive) springs are easy to identify, because one end of the spring is wound tighter than the other end. Too much and it's too stiff and won't transfer weight regardless of the shock settings, too little and you'll have a saggy ass because you are riding on the compressed shock. I just changed the rear spring in my bike based on this calculator and I was able to set the sag right. Now in stock and shipping, D2 Coilovers and Air Suspension for 2016+ Civic Sedan, Coupe and Hatchback. Shop Drag Racing Coilovers and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. From balanced setups to various different spring rates, you'll find out all. The upper mount is a direct bolt-in and requires no cutting, welding or fabrication utilizing a 2-1/2” coil over spring. Energy Suspension poly urethane bushings supplied for rear eyes. Pit Stop USA is The Online Motorsports Superstore! We have auto racing springs from AFCO Racing Products, Eibach, Hypercoils, Landrum Spring Service, Carrera / QA1 Motorsports, Pro Shocks Pro Springs and Suspension Spring Specialists. Strange Dual Caliper Spindle Mount Brake Kit (Pro Series 2) for TRZ Spindle / Strange Strut $ 1,075. For road racing where you do not need want a lot of body roll, you would want a smaller spring and higher spring rates. Having spent most of my years drag racing in muscle cars with coil springs, I decided to contact John Calvert (from Calvert Racing Sus-pensions) to get some ideas on the latest technology in making rear-wheel-drive cars with leaf-spring rear suspensions hook, even though the same old issues still exist of setting pinion angle, preload, getting. Stiffer rear springs give you a more consistent handling through the corners, while softer rear springs will give less drag on the straights. There has been a theory that spring rates change (pounds per inch of compression). All of our coilover kits also include Helper springs. Here you will find only the highest quality drag racing suspension components available. Double Adjustable Rear Shock Adjustment Procedure (Aluminum Body) Baseline adjustment procedures for aluminum body rear shocks. SPRING RATE CHARTS The charts below are a general guideline for selecting spring rates. Don't worry Don, I'm not going to beat you up. BC Racing BR Series Coilovers are perfect for driving your car on the street and occasional road course duty. what spring rates are upfront? 13 kg springs front and 15 kg springs rear. These springs are designed with low initial spring rates but rapidly increase as the spring is compressed. For road racing where you do not need want a lot of body roll, you would want a smaller spring and higher spring rates. Drag Race Front and Rear Lowering Coilovers with 0. and 60 ft times. Kontrol Pro is the perfect choice for people that want a lowered stance, improved handling and response. Hey everyone, recently I bought some BC Racing coilovers used from a local forum member, the spring rates are 10k front 12k rear, and were custom valved for the 12k spring rates. Without helpers, the main spring may not re-seat properly and will cause a sudden change to that corner weight/height. Advertise with ProbeTalk - click here to find out how! Advertise with Possible Rear Big Brake Setup. When choosing a spring, you will also have to consider the spring rates. Spring Rates & Valving. Stock Height HD Front Springs-PAIR 165 lb Fixed Rate Spring 360 MM ride height measured from center of wheel hub to lip of fender+-5MM (5mm each way dependant on vehicle accessories and build quality). » Available in 125#, 150#, & 175# Rates Fitment: UPR front, rear coil over kits and any coil over kit using a 2. The D2 DRAG Series suspension kits are designed to help you reduce your 1/4 mile time through the use of drag-specific valving and spring rates which increase your car's traction properties. The in-house Viking engineering and product development team consistently push beyond the forefront of technological advancement and quality in suspension systems and components. 84 at 139 MPH with Opentracker products. Now in stock and shipping, D2 Coilovers and Air Suspension for 2016+ Civic Sedan, Coupe and Hatchback. Check out our entire inventory of drag racing shocks. The explosion of FWD Honda Drag Racing over the last 10 years continues to move to new levels each and every year. To put these rates into perspective, the stock 9-leaf rear spring was 196 lbs, and the HD F41 rear spring was 330. Also, with a supplemental coilover. A higher number will produce a stiffer ride, but better handling. For 89-91. the required spring rate and pair that with a good set of adjustable shocks. I was just curious why the steeda coilovers seem to have gone the other way. Whatever your custom suspension needs, Summit Racing Equipment has coilover springs in every height, inside/outside diameter, spring rate, and application you need. I'm looking for a good stance also. An aftermarket coilover is typically comprised of a spring, damper, and top-hat. I typically use a 125 spring on cars say 3200 lbs and under. 7k front/ 5. Threaded spring seats allow installation of spring rates that differ from the baseline spring rate for the purpose of performance tuning. I drive through MA and NH daily. With easily accessible adjustment knobs for fine tuning your compression/rebound and separately adjustable ride height, having a performance coilover system couldn’t be any easier. For road racing/handling, 170# - 200# or a variable rate. Suspension Basics and Drag Racing Dynamics March 12, 2015 by Muscle Car DiY This chapter explains the basic physics occurring on the starting line when you launch your car, along with why it does (or doesn't do) what it should. Its the perfect set up for drag and road racing. If you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximize weight transfer to the rear and therefore onto the rear tires. Read all about how to choose the propper spring rate for your suspension system and adjustment tips from Chassisworks. A high rate rear suspension will then allow the rear tires to unload with a minimum of angular travel. Just installed a set of these on my own GN on 11-24-12. I have a futura I am taking to the strip and looking for some help with rear spring selection. Spring rates may vary depending on applications, usage and personal preference. We like the 4 link rear suspension because of its ability to properly locate the rear axle no matter how soft we want to make the spring. Re: What's the best drag setup for Leaf spring suspension? with a spring-over setup I could use a couple of offroader tricks rather than ladder bars. They are Eibach's ERS Linear Main Spring with a 150 pound spring rate. has been designing and manufacturing coil springs for the automotive racing industry. Express shipping and best service on BC Racing V1-VM Coilovers for Nissan Cefiro A31 (88-94), from official BC Racing Suspensions distributor. Improve handling for aggressively set-up Mustangs without degrading ride quality. Landrum Performance Springs offers a range of aftermarket suspension springs used primarily in Circle Track Racing, Drag Racing, Off-Road Racing & Powersports markets. How To Master Traction in Your Leaf Spring Car Part IV July 5, 2016 Wayne Scraba Drag Race 101 , Guest Columns , How-To and Tech Tips , Tech , Tech Tips 0 Over the past several issues, we've taken a close look at the hardware that's pretty much proven to make your leaf spring car hook hard and go straight. Pit Stop USA is The Online Motorsports Superstore! We have auto racing springs from AFCO Racing Products, Eibach, Hypercoils, Landrum Spring Service, Carrera / QA1 Motorsports, Pro Shocks Pro Springs and Suspension Spring Specialists. Specially designed spring rates allows for a stiffer rear spring to allow you to put power down to the pavement quicker. BC Racing North America, one of the largest distributors of custom automotive aftermarket suspension products globally, offers more than 1100 unique suspension kits direct to consumer and through distribution and supply chains. I think those C/O rates would be really soft on a street car but that is the calculation. The very first thing you need to do is determine how you are going to use your Corvette. Double vs Single adjustable shocks.