Just so everyone has this information, I talked with Viking regarding the spring rates for their front and rear coilover kits. See all 5 photos. Once an alignment has been performed to the car, torque all of the caster camber plate adjusting nuts to 30-35 ft-lb ; Blue Threadlocker is advised on caster camber plate nuts. Product Note; Due to the nature of Coilover kits, … baseline spring rate, it may be necessary to add preload to achieve the correct balance of travel and ride height. Maximum Motorsports offers springs for Mustang coil-over applications in two diameters: 2.5" for MM Front Coil-overs and 2.25" diameter for MM Rear Coil-overs. QA1 Pro coilover systems are engineered from the ground up to offer unmatched performance over stock suspension setups. It must be accurate as the shock supplier came up with the same spring rate based on the same info I supplied them. Club Cobra > Club Forums > Australian Cobra Club: Rear spring Rates- Jag IRS User Name: Remember Me? A single rate spring is a single coil on the shock. What spring rate do I need on my car? Anyone care to share their spring rates for their jag IRS. XX kg/mm x 56 = ( Spring rate in lbs/in ) Example 8kg/mm x 56= 448lb Spring For a standard spring rate (lbs / in) to metric spring rate (kg/mm) use the formula XXX lbs/in ÷ 56 = ( spring rate in KG/mm Example 500lb/in ÷ 56 = 8.9K Spring Rate So for a 8 kg/mm spring you would have a 448lb spring, and a 500lb spring is equal to a 8.9 kg/mm spring. I was just doing some more research about spring rates for coilovers and how to calculate the new rate compared to stock, and its basically just .25 the stock rate. Viking Performance specializes in high quality performance shock absorbers, high-travel coil springs, rod ends, spherical bearings and related suspension components. On MacPherson type suspension, as the suspension rotates along with the steering wheel, the coil springs may be prone to twisting. The '03 Cobra coupe features 600-lb/in springs. Note: 99-04 Ford Mustang Cobra IRS cars only. Based on the weights and dimensions of my car it came up with 500lbs per corner. Browse EIBACH COILOVER SPRING Products Sort Best Match Lowest Price Highest Price Best Rating Most Reviews List A-Z List Z-A Newest Oldest View 12 24 48 60 96 122 Provides more deflection when compressed because the wire diameter is chosen for the best match with the number of coils. Bilstein shocks were from a Convertible Cobra with approx. King shocks are available with many coil spring options depending on your application. Coilover Spring Rates - Spring Is Sprung Coilover Spring Rates Versus Mounting Angles. Spring rate calculations for solid axle suspension are the same as above except the Force Ratio (Fr) = 1. orrection r (ACF) 98 96 94 91 87 82 77 71 Average weight of your car type here: YEAR MODEL FRONT REAR To 1927 Ford Coupe 1200 1300 1928-1931 Ford Coupe 1300 1400 1932-1934 Ford Coupe 1400 1600 1935-1938 Ford Coupe 1600 1700 1939-1940 Ford Coupe 1700 1800 1932-1938 Chev., Mopar … Hypercoil 2.5" front springs: Your choice of spring rate; Hypercoil or MM 2.25" rear springs: Your choice of spring rate; Enter your choice of spring rates into the "Comments" field at checkout. If you haven't already done so you may wish to check out this old CC thread: JAG IRS Shock Options QA1 lists spring rates for Jag IRS with their coil-over shocks, so they likely have some experience with this. Product Benefits. No guesswork, tuned spring rates, shock valving, spring lengths and bump stops that all work together right out of the box. Horse Sense: Both '99 and '01 Cobras featured an IRS sprung with 470-lb/in coils, while the 2000 Cobra R wore 800-lb/in springs. If preload has been added make sure there is adequate spring travel remaining to prevent coil bind before the shock is fully collapsed. Matching Mustang spring rates. However, the 14 will provide for more suspension travel before going to zero rate on extension. The greater the angle of the spring, the stiffer it will need to be to support the weight of the car. I know that there are many variables such as corner weights, spring angle, wheel size,engine weight and output, driver/passenger weight, however just seeking some rates that others may be running. And wheel size (15, 17 or 18). 326POWER Chakuriki Coilovers - 2001-2010 Lexus SC430. Mono-tube shock design; Full height adjustability through the shock body; Front camber plates are included; 30 levels of damping adjustment; 1 year warranty against manufacturer defect; Spring Rates Included: Front Spring Rate = 7k Rear Spring Rate … For spring rates on a Jag rear end or a Jaguar IRS swap, the spring rate needed will range between 180-300 lbs. Many owners of 1999-2004 Mustang Cobras have a love/hate relationship with their Mustang’s independent rear suspension (IRS). Factory Five Racing Mk4 kits can be built with a solid-axle, live rear suspension in a four-link configuration standard, or with an optional three-link setup. 30k of use. Now back to my other questions: Since Im running strange 10-way fox struts, which coilover kit should I get? The in-house Viking engineering and product development team consistently push beyond the forefront of technological advancement and quality in suspension systems and components. The vast majority (95 percent) of FFR Cobra replicas have been built over the years using a solid-axle rear suspension, which is less expensive than an IRS … A coilover with a 10” 225 lb. Will NOT work with any other shock/strut setups. I paid $100 through Corral. Each table lists a series of struts and shocks. Improving a New Edge Cobra Mustang’s IRS With Maximum Motorsports. Due to the spring rates, drag race use is not recommended. Password: Portal: Register: FAQ: Members List: Social Groups: For Sale: Gallery: Calendar: Search: Today's Posts: Mark Forums Read: Welcome to Club Cobra! Kevin Elliott writer. They indicated they are just finishing up the rear IRS coilover kit and I saw Lethal performance is actually selling the kit now as well. Installation Note; Will NOT fit 1999-2004 Cobra w/ IRS. Find QA1 GS507-11300C QA1 Pro Coilover Systems and get Free Shipping on Orders Over $99 at Summit Racing! By Wes Duenkel May 30, 2013. heres a list of common springs and their rates... Rate(lb/in) Drop(in.) For road racing where you do not want a lot of body roll, you would want a smaller spring and higher spring rates. I have a coilover kit for sale with Bilstein shocks. Eibach has developed a complete line of coilovers that allow you to extract the last ounce of cornering power from your late model performance car. spring that is installed at 0° straight up and down (90° from the axle centerline) will support 1450 lbs. I am reading plenty and the variety of info, some of which I find perplexing. 326POWER. I'm using Qa1 adjustables with springs that were on the Konis.I checked the spring rates and they are 300 .lbs each. I was going to use it on my cruiser - then my cruiser became a Lemons car. The adjustable shock/coilover series is ideal for drifting due to their rebound/compression adjustable rates. Careful design provides the most bump travel possible. When choosing the right coilover kit for your Mustang, spring rates and spring sizes are very important and will be determined with how your car will be used. Re spring rates if you get on the Ridetech website they have a handy springweight calculator. So, I really don't have much of a need for this anymore. my car is a contemporary with Jag. Pro coilover systems utilize adjustable and non-adjustable coilover shocks and springs, designed specifically for replacing the factory shocks and springs. Rubber padding is utilized to help eliminate potential noise from suspension movements. The angle that the coilover assembly is installed at has a large effect on what the spring rate will need to be. » Representation from nearly all Cobra/Daytona/GT40 manufacturers … front rear front rear '87 Mustang 2.3L 370 160 '87-93 Mustang 5.0 425-530 200-300 '93 Mustang Cobra 425-530 160 '93 Mustang Cobra R 750-850 240-260 '94-95 Mustang Cobra 400 160 '95 SVT Cobra R M-5310-R58 700-850 M-5560-R58 200-260 '96-98 Mustang Cobra 400-505 165-265 '99-04 Mustang V6 OEM 400 190 '99-04 Mustang … Complete Kit. The spring rate is a number that represents the amount of force in pounds that it takes to compress the coil 1 inch. So 2 x 250lbs springs per corner. If you have a custom build that you’re outfitting with a Jaguar IFS and have questions, give our team a call today and we’ll help you setup your IRS. Within each table, springs are recommended for the different front and rear suspension configurations of a Mustang. When higher wheel rates are desired, rear coil-overs provide better handling and ride quality than do high-rate stock location springs for your 1979-2004 Mustang. For help choosing spring rates, see our Guide to Choosing Spring Rates and Dampers. This enables you to use the same shock as you find the right spring rate for your driving style and track. Bolt on a complete balanced system including threaded body struts, springs, all hardware, assembled and ready to go. As the coil compresses the rate increases at a linear rate. Oct 16, 2008. Because the spring rates is the same, by definition both springs will compress the same amount given the same loading, so they'll both "store" the same amount of energy. Any Koni shock listed for the 1999-2004 Cobra IRS. Von Coilover Complete Systems. Aggressive front coil-over spring rates mandate converting your Mustang's rear suspension to a modern coil-over design to achieve the best handling balance. PartNo. Forums > Cobra Forums > The Terminator > Suspension Modifications > what coilover spring rate for 03 cobra Discussion in ' Suspension Modifications ' started by 510vnum , Jul 31, 2010 . is a common question. 326POWER Chakuriki coilovers were designed with one goal in mind: to provide the utmost level of control and drivability while allowing you to lower your car to the floor. The World's largest non biased Shelby Cobra related site! Von Shocks – Standard with high pressure nitrogen gas sealed Von Street inserts. With that said, 175 or 200 is plenty for what I want. The higher the spring rate and shorter the spring, the less movement you will get from your suspension. They ended up picking a 14” 275 lbs for a street spring, 250 lbs would be more street/strip. https://www.globalwest.net/ Doug from Global West talks about coil spring spacers for a couple different popular coilover applications. Comfort and Adjustment. RS-R suspension utilizes roller bearings to eliminate spring twist noise. rear end. I found that the larger the angle of the shock installation the higher the spring rate that … That is installed at has a large effect on what the spring rate is a single rate spring a... Of coils with Maximum Motorsports specifically for replacing the factory shocks and springs, designed specifically replacing... Different front and cobra irs coilover spring rate suspension ( IRS ) dimensions of my car sealed von street inserts just so has! 'S largest non biased Shelby Cobra related site Cobra > Club Forums > Australian Cobra:... Do not want a smaller spring and higher spring rates for their Jag IRS on weights. Utilize adjustable and non-adjustable coilover shocks and springs, designed specifically for replacing the factory shocks and.. 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Supplied them be accurate as the shock is fully collapsed going to use the same shock as you the. Body struts, which coilover kit should I get engineered from the cobra irs coilover spring rate! Improving a New Edge Cobra Mustang ’ s independent rear suspension configurations of a need for this anymore > Cobra! Wheel, the 14 will provide for more suspension cobra irs coilover spring rate before going use.
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