{"product_id":"comp-cams-7245-1-race-endurance-1-657-od-conical-spring-2-000-installed-height-1-spring","title":"COMP Cams 7245-1 - Conical Valvespring, 1.657In D,565Lb R","description":"\u003cp\u003eCOMP Cams 7245-1 - Conical Valvespring, 1.657In D,565Lb R\u003c\/p\u003e\u003cp\u003eRace Endurance 1.657\" OD Conical Spring,  2.000\" Installed Height,  1 Spring\u003c\/p\u003e\u003cp\u003eDual Conical Valve Springs. As opposed to dual cylindrical spring systems, COMP Cams Dual Conical Valve Springs require no interference fit to dampen spring surge. The self damping characteristic of conical geometry, along with the lower spring kinetic energy of the upper coils, provide a game-changing breakthrough in valve spring design. COMP Cams Dual Conical Valve Springs are constrained at the top and bottom with stepped retainers and spring seats to create separation. The result is that the springs naturally progressive nature can provide outstanding damping without rubbing friction or the associated heat and surface damage. These springs are designed for circle track, road Race and drag racing Applications, as well as all-out, high-RPM street\/strip hydraulic Roller valve train systems with optimized lifters.\r\n\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003eDampen coil oscillations, increase RPM limit and reduce resonance\u003c\/li\u003e\r\n\u003cli\u003eImproves valve train stability\u003c\/li\u003e\r\n\u003cli\u003eFewer parasitic horsepower losses and more power\u003c\/li\u003e\r\n\u003cli\u003eSuperfinish surface processing\u003c\/li\u003e\r\n\u003cli\u003eNon-interference fit\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\nThe reduced oscillation in the Dual Conical Springs translates to less applied force and stress to the springs. This increases the lifespan of the spring and the valve train. It also allows the use of more aggressive Camshaft profiles. \r\n\r\n\u003ctable border=\"1\"\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eSeat Load\u003c\/td\u003e\r\n\u003ctd\u003eOpen Load\u003c\/td\u003e\r\n\u003ctd\u003eCoil Bind\u003c\/td\u003e\r\n\u003ctd\u003eRate\u003c\/td\u003e\r\n\u003ctd\u003eOD\u003c\/td\u003e\r\n\u003ctd\u003eID\u003c\/td\u003e\r\n\u003ctd\u003eRetainers\u003c\/td\u003e\r\n\u003ctd\u003eSeats\u003c\/td\u003e\r\n\u003ctd\u003eShims\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd rowspan=\"2\"\u003e 150lbs @ 2.00\"\u003c\/td\u003e\r\n\u003ctd rowspan=\"2\"\u003e 630lbs @ 1.20\"\u003c\/td\u003e\r\n\u003ctd rowspan=\"2\"\u003e1.115\"\u003c\/td\u003e\r\n\u003ctd rowspan=\"2\"\u003e 600lb\/in\u003c\/td\u003e\r\n\u003ctd\u003e1.442\"\u003c\/td\u003e\r\n\u003ctd\u003e.646\"\u003c\/td\u003e\r\n\u003ctd rowspan=\"2\"\u003e 716-1, 1738-1\u003c\/td\u003e\r\n\u003ctd rowspan=\"2\"\u003e 4668-1, 4669-1\u003c\/td\u003e\r\n\u003ctd rowspan=\"2\"\u003e 4756\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003e1.657\"\u003c\/td\u003e\r\n\u003ctd\u003e.861\"\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCoil Bind Height\u003c\/strong\u003e: \u003cspan\u003e1.115\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCompatible .570\" Guide Diameter Spring Seat\u003c\/strong\u003e: \u003cspan\u003e4669-1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCompatible Retainer\u003c\/strong\u003e: \u003cspan\u003e716-1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCompatible Shims\u003c\/strong\u003e: \u003cspan\u003e4756\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDamper\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInner Spring Inside Diameter\u003c\/strong\u003e: \u003cspan\u003e0.646\/0.861\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eNumber of Springs\u003c\/strong\u003e: \u003cspan\u003e2\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOuter Bottom Spring Inside Diameter\u003c\/strong\u003e: \u003cspan\u003e1.225\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOuter Top Spring Inside Diameter\u003c\/strong\u003e: \u003cspan\u003e1.01\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOuter Top Spring Outside Diameter\u003c\/strong\u003e: \u003cspan\u003e1.442\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSeat Height\u003c\/strong\u003e: \u003cspan\u003e2.05\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSeat Pressure\u003c\/strong\u003e: \u003cspan\u003e150\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSpring Rate\u003c\/strong\u003e: \u003cspan\u003e600\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Series\u003c\/strong\u003e: \u003cspan\u003eRace Endurance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAmazon ASIN\u003c\/strong\u003e: \u003cspan\u003eB00N6LT060\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eC.A.R.B. Exempt for Racing and Off-Road Only Vehicles?\u003c\/strong\u003e: \u003cspan\u003eYes, but must be a race\/competition only vehicle.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eC.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?\u003c\/strong\u003e: \u003cspan\u003eYes, but must meet tailpipe emission standards for year of vehicle.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eC.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?\u003c\/strong\u003e: \u003cspan\u003eYes, but must meet tailpipe emission standards for year of vehicle.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eC.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?\u003c\/strong\u003e: \u003cspan\u003eYes, but must meet tailpipe emission standards for year of vehicle.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eC.A.R.B. Exempt for On-Road Vehicles?\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eC.A.R.B. Exemption Reason\u003c\/strong\u003e: \u003cspan\u003eNo impact on pollution output of vehicle.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eC.A.R.B. E.O. Number\u003c\/strong\u003e: \u003cspan\u003eN\/A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":51210119446806,"sku":"COMP-7245-1","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_819380cd0c16d3f2e0cb72a232675c71l_normalized.jpg?v=1779225828","url":"https:\/\/www.cspracing.com\/products\/comp-cams-7245-1-race-endurance-1-657-od-conical-spring-2-000-installed-height-1-spring","provider":"Complete Street Performance","version":"1.0","type":"link"}