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the optional Sealing rings should be used in boosted applications to prevent factory seal blow outs between the intake runner mating face
Alternative spring combinations will require supporting modifications or engine tuning / recalibration
\n \nCheck out customer install: GR Yaris Engine with 7spd Sequential Gearbox \n \n
Ideal for motors over 700hp using E85
Barra BA FG Falcon EXTREME Race Spring | Retainers KVS40-EXTREME Vehicle Make_BMW the optional Sealing rings should150lb seat pressure at 38. 10mm. 330lb at 12. 4mm. Coil bind at 24. 5mm. FORD BARRA 4. 0L 6CYL BA FG FALCON Turbo and non Turbo. PACALOY Beehive valve spring and Titanium retainer set for Extreme competition engines running high boost and RPM. 150lb seat pressure at 38. 10mm. 330lb at 12. 4mm. Coil bind at 24. 5mm.
