GSC Power-Division Single Valve Spring Kit for FA20 WRX-BRZ-FRS FA Shortblocks 5 psi) Using Iso Octane

5 psi) Using Iso Octane at 52 Degrees C (125 Degrees F)

2L MT 4WD L Sedan 1998

Proper break in and running high zinc oil is a must on flat tappet engines

This clutch is not intended for race use and is designed to handle stock power

This Block Is Our Closed Deck WRX FA20DIT (E20) Shortblock with Forged Internals and Machined for ½” Head Studs

GSC Power-Division Single Valve Spring Kit for FA20 WRX-BRZ-FRS FA Shortblocks 5 psi) Using Iso OctaneMax RPM: 8,200 RPM Max boost: 20 psi Cylindrical Spring Coil Bind 0. 782 Install Height 1. 294 1. 298 Seat Pressure 86 25 lbs Open Pressure @ 11. 0mm Lift 179 lbs @ 0. 861 178 lbs @ 0. 865 Maximum Valve Lift 0. 452 Includes: 16 Dual Springs 16 Spring Seat Locators 16 Titanium Retainers