Atomic High Rev Hydraulic Lifters – Ford Barra DOHC | ‘Anti Pump-Up’ | 8000+ RPM Safe | Preload Set Ready
Description:
Designed in collaboration with Crow Cams, the Atomic High Rev 'Anti Pump-Up' Hydraulic Lifters are purpose-built to handle the extreme demands of high-RPM Barra engines — where valvetrain stability can make or break a build.
Featuring double the bleed-off rate of factory lifters, these lifters are engineered to operate cleanly and reliably beyond 8000 RPM, reducing the risk of valve separation, float, or catastrophic top-end damage. These lifters help maintain consistent valve contact, improve longevity of valvetrain components, and are ideal for high-performance street and race applications.
✅ Key Features:
✅ Suits Ford Barra DOHC 4.0L 6-cylinder engines (BA–FGX)
✅ Developed in partnership with Crow Cams
✅ Double the bleed-off rate vs standard lifters – reliable at 8000+ RPM
✅ Helps prevent valve float, rocker breakage, and cam damage
✅ Promotes stable valve control with stiffer springs and big cams
✅ Reduces wear and extends life of valvetrain components
✅ Maximum recommended preload: 0.75mm (0.030") for street use
✅ Must-have upgrade for any high-RPM or turbocharged Barra build
🛠️ Why Choose Atomic Anti Pump-Up Lifters?
✔️ Maintain consistent valve contact at high RPM
✔️ Reduce the risk of valve float, separation, and top-end failure
✔️ Support aggressive cam profiles and stiff spring rates
✔️ Ideal for engines spinning beyond 7500–8000 RPM
✔️ Backed by real-world durability and proven in Atomic 1000+hp builds
🔧 Critical Note on Lifter Preload:
⚠️ ALL hydraulic lifters — regardless of brand — must be checked for correct preload during installation.
Excessive preload can cause:
-
Valve train noise (especially cold)
-
Reduced lifter life and premature failure
-
Valve float or loss of power at high RPM
-
Potential valve burning due to incomplete valve closure
Hydraulic lifters rely on oil pressure to maintain zero lash and compensate for heat-related expansion. Excessive preload forces the internal plunger too deep, effectively turning the lifter into a solid unit and eliminating its self-adjusting function. This can result in catastrophic engine damage under load.
➡️ Maximum recommended preload: 0.75mm (0.030")
➡️ See included instructions for correct preload checking method
📦 What’s Included:
