1.8T - DOHC 20 Valve Type/Material/Application: Dual Spring - Turbo - Special Alloy ( Exhaust - 8 pieces) Outside Diameter: 22.75 mm/29.5 mm Inside Diameter: 17.1 mm/22.75 Seat Pressure: 80 lbs @ 32.5 mm Open Pressure: 180 lbs @ 22.5 mm Rate Inch: 254 lbs Coil Bind: 20 mm Max Net Lift: 12 mm This Spring requires Ferrea Titanium Retainer # E11032 and Ferrea Spring Seat Locator # SL1026. (Discard OEM Spring Seat Locator)
2.8L - DOHC 12 Valve Type/Material/Application: Dual Spring - Turbo - Special Alloy Outside Diameter: 22.75 mm/29.5 mm Inside Diameter: 17.1 mm/22.75 mm Seat Press.: 95 lb. @32 mm Open Pressure: 195 @ 22 mm Rate Inch: 254 lbs Coil Bind: 19 mm Max Net Lift: 13 mm This Spring requires Ferrea Titanium Retainer # E11039
1.8L - DOHC 16 Valve (PL) Type/Material/Application: Dual Spring - Special Alloy - Endurance Application Outside Diameter: 22.75 mm/29.5 mm Inside Diameter: 17.1 mm/22.75 mm Seat Pressure: 85 lbs @ 33 mm Open Pressure: 205 lbs @ 23 mm Rate Inch: 304 lbs Coil Bind: 17.5 mm Max Net Lift: 14.mm This Spring requires Ferrea Titanium Retainer # E11084 and Ferrea Seat Locator #SL1073 (Discard OEM Spring Seat Locator)
3.2L - DOHC 24 Valve Type/Material/Application: Dual Spring - Endurance - Special Alloy Outside Diameter: 18.23 mm/25.19 mm Inside Diameter: 13.4 mm/18.23 mm Seat Press.: 75 lbs. @37.5 mm Open Press: 180 lbs. @27.5 mm Rate Inch: 266 lbs Coil Bind: 24.3 mm Max Net Lift: 12 mm This Spring requires Ferrea Titanium Retainer # E11122 and BOTH Ferrea Spring Seat Locators # SL1131 & SL1132
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