{"product_id":"atomic-barra-hi-rev-valvetrain-package","title":"Atomic Barra Hi-Rev Valvetrain Package","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta content=\"width=device-width, initial-scale=1.0\" name=\"viewport\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n        \/* ATOMIC PERFORMANCE THEME STYLES - LIGHT MODE *\/\n        .atomic-container {\n            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n            max-width: 1000px;\n            margin: 0 auto;\n            background-color: #ffffff;\n            color: #333333;\n            line-height: 1.6;\n            border: 1px solid #e0e0e0;\n            box-sizing: border-box;\n        }\n\n        \/* BRAND COLORS *\/\n        :root {\n            --atomic-orange: #E4522B;\n            --atomic-purple: #663399;\n            --light-grey: #f4f4f4;\n            --border-color: #ddd;\n        }\n\n        \/* TYPOGRAPHY *\/\n        .atomic-header {\n            text-align: center;\n            padding: 40px 20px;\n            border-bottom: 4px solid var(--atomic-orange);\n            background-color: #fafafa;\n            width: 100%;\n        }\n\n        .atomic-title {\n            color: var(--atomic-orange);\n            font-size: 2.5rem;\n            text-transform: uppercase;\n            margin: 0;\n            font-weight: 900;\n            letter-spacing: 1px;\n            line-height: 1.1;\n        }\n\n        .atomic-subtitle {\n            color: #555;\n            font-size: 1.2rem;\n            margin-top: 10px;\n            font-weight: 400;\n            text-transform: uppercase;\n            letter-spacing: 2px;\n        }\n\n        h2 {\n            color: #222;\n            text-transform: uppercase;\n            font-size: 1.8rem;\n            margin-bottom: 15px;\n            border-left: 5px solid var(--atomic-orange);\n            padding-left: 15px;\n        }\n\n        h3 {\n            color: #333;\n            font-size: 1.4rem;\n            margin-top: 0;\n            font-weight: 700;\n        }\n\n        p {\n            margin-bottom: 15px;\n            color: #444;\n        }\n\n        strong {\n            color: #000;\n        }\n\n        \/* LAYOUT GRIDS *\/\n        .atomic-section {\n            padding: 40px;\n            border-bottom: 1px solid #eee;\n        }\n\n        .atomic-grid {\n            display: grid;\n            grid-template-columns: 1fr 1fr;\n            gap: 40px;\n            align-items: center;\n        }\n\n        .atomic-card-grid {\n            display: grid;\n            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n            gap: 20px;\n            margin-top: 30px;\n        }\n\n        \/* FEATURE CARDS *\/\n        .atomic-card {\n            background-color: #f9f9f9;\n            padding: 25px;\n            border: 1px solid var(--border-color);\n            border-top: 4px solid var(--atomic-purple);\n            border-radius: 4px;\n            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);\n        }\n\n        .atomic-card h3 {\n            color: var(--atomic-purple);\n        }\n\n        \/* IMAGES *\/\n        .atomic-img {\n            width: 100%;\n            height: auto;\n            border-radius: 4px;\n            border: 1px solid #ddd;\n            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);\n            background-color: #eee;\n            min-height: 250px;\n            object-fit: cover;\n        }\n\n        .img-caption {\n            font-size: 0.85rem;\n            color: #666;\n            text-align: center;\n            margin-top: 8px;\n            font-style: italic;\n        }\n\n        \/* LISTS *\/\n        ul.atomic-list {\n            list-style: none;\n            padding: 0;\n        }\n\n        ul.atomic-list li {\n            padding-left: 25px;\n            position: relative;\n            margin-bottom: 10px;\n            color: #444;\n        }\n\n        ul.atomic-list li::before {\n            content: \"►\";\n            color: var(--atomic-orange);\n            position: absolute;\n            left: 0;\n        }\n\n        \/* CTA BUTTON *\/\n        .atomic-cta {\n            display: inline-block;\n            background-color: var(--atomic-orange);\n            color: #fff;\n            padding: 15px 30px;\n            font-size: 1.2rem;\n            font-weight: bold;\n            text-transform: uppercase;\n            text-decoration: none;\n            border-radius: 4px;\n            margin-top: 20px;\n            text-align: center;\n            box-sizing: border-box;\n            transition: background 0.3s;\n            cursor: pointer;\n            border: none;\n        }\n\n        .atomic-cta:hover {\n            background-color: #c03d1b;\n        }\n\n        \/* RESPONSIVE *\/\n        @media (max-width: 768px) {\n            .atomic-grid {\n                grid-template-columns: 1fr;\n            }\n\n            .atomic-title {\n                font-size: 1.8rem;\n            }\n\n            .atomic-section {\n                padding: 20px;\n            }\n        }\n    \u003c\/style\u003e\n\u003cdiv class=\"atomic-container\"\u003e\n\u003c!-- HEADER --\u003e\n\u003cdiv class=\"atomic-header\"\u003e\n\u003ch1 class=\"atomic-title\"\u003eAtomic Hi-Rev Valvetrain Package\u003c\/h1\u003e\n\u003cdiv class=\"atomic-subtitle\"\u003eProven at 8600 RPM | 38 PSI | Extreme Duty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- INTRO SECTION --\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eMarine Grade Punishment\u003c\/h2\u003e\n\u003cp\u003eWhen you are building a valvetrain for extreme high-RPM use, transient bursts of power aren't enough to prove reliability. You need sustained load. This exact valvetrain package has been proven in the \u003cstrong\u003eXplicit Racing Boat\u003c\/strong\u003e over the last few seasons. Running at 8600 RPM and 38 PSI for minutes at a time, a dozen times a race weekend, it survives an environment that destroys lesser components.\u003c\/p\u003e\n\u003cp\u003eIf this kit can survive the sustained, relentless pounding of boat racing, it will easily handle years of street driving, burnouts, drifting, and drag abuse.\u003c\/p\u003e\n\u003ch2 style=\"color: var(--atomic-purple); border-left-color: var(--atomic-purple);\"\u003eThe Friction Equation\u003c\/h2\u003e\n\u003cp\u003eHigh RPM creates immense heat and friction. We combat this by utilizing our \u003cstrong\u003eHD Double Roller Rockers\u003c\/strong\u003e. The additional roller on the rocker tip virtually eliminates the side-loading forces on the tip of the valve, drastically reducing wear, friction, and stress on the valve guides. To offset the slight weight increase of these robust rockers, we utilize ultra-lightweight \u003cstrong\u003eTitanium Retainers\u003c\/strong\u003e to keep the overall mass of the moving assembly to an absolute minimum.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003c!-- PLACEHOLDER FOR HI REV KIT IMAGE --\u003e \u003cimg alt=\"Atomic Barra Hi-Rev Valvetrain Package\" class=\"atomic-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_head_and_valvetrain.jpg?v=1782736862\" style=\"margin-bottom: 16px; float: none;\"\u003e\n\u003cdiv class=\"img-caption\"\u003eComplete 8600 RPM Capable Head Package.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TONY HEARNE WORKSHOP WISDOM --\u003e\n\u003cdiv class=\"atomic-section\" style=\"background-color: #f6f0ff; border-left: 6px solid var(--atomic-purple);\"\u003e\n\u003ch3 style=\"color: var(--atomic-purple); margin-top: 0; text-transform: uppercase;\"\u003e💡 Expert Builder's Tip\u003c\/h3\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 5px;\"\u003eLessons from Tony Hearne — Head Preparer for the Xplicit Racing Boat:\u003c\/p\u003e\n\u003cp style=\"font-style: italic; color: #444; margin-top: 0;\"\u003eWhen setting up the seats for these stainless valves, only stone the standard, uncut factory seats. You want to retain the maximum amount of material in the seat itself unless you are replacing it with an upgraded seat. While this leaves a tiny bit of flow on the table compared to aggressive cuts and large throat diameter, it does two critical things: it acts as a massive heat sink to draw destructive heat out of the exhaust valve, and it gives the seat the structural strength required to survive the relentless pounding of high RPM impacts combined with heavy spring pressures.\u003c\/p\u003e\n\u003cp style=\"font-size: 0.9rem; color: #666; margin-bottom: 0;\"\u003e*While not strictly critical, for the absolute ultimate setup, Atomic upgraded valve guides and aftermarket seats are available separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURE CARDS --\u003e\n\u003cdiv class=\"atomic-section\" style=\"background-color: #fafafa;\"\u003e\n\u003ch2 style=\"text-align: center; border: none; color: #333;\"\u003ePackage Engineering\u003c\/h2\u003e\n\u003cdiv class=\"atomic-card-grid\"\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eHydraulic Stability\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e24x Anti-Pump Lifters\u003c\/strong\u003e\u003cbr\u003eFeatures high-flow damping ability to reduce valvetrain noise and harmonics. Prevents the dreaded \"pump-up\" that holds valves open and destroys engines under hard limiters.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/IMG_8228_cb5c072a-1c75-453a-9a20-4206c71d6fd6.jpg?v=1784890649\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\" style=\"border-top-color: var(--atomic-orange);\"\u003e\n\u003ch3 style=\"color: var(--atomic-orange);\"\u003eTiming Lockdown\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eVernier Sprockets + VCT Delete\u003c\/strong\u003e\u003cbr\u003eHigh lift and extreme RPM cause standard VCT units to wander. Locking the cams with billet Vernier gears ensures timing remains 100% true regardless of RPM.\u003cimg alt=\"Three gears with colored centers on a white background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_Vernier_Cam_Sprockets_306560_14.jpg?v=1773882178\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eValve Control\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStage 3 or 4 Springs \u0026amp; Ti Retainers\u003c\/strong\u003e\u003cbr\u003eHigh spring pressure requires weight reduction. Our Titanium retainers ensure the valve snaps shut without floating at 8600 RPM. We test and check EVERY spring for straightness and group them +-1lbs to minimise variation and harmonics. \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Atomic Titanium Retainer Set (24) – Ford Barra DOHC 6-Cyl\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Titanium_Retainer_Set_24_Ford_Barra_DOHC_6-Cyl.jpg?v=1769768460\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WHATS INCLUDED --\u003e\n\u003cdiv class=\"atomic-section\" style=\"background-color: #fff;\"\u003e\n\u003cdiv class=\"atomic-grid\" style=\"align-items: start;\"\u003e\n\u003cdiv\u003e\n\u003ch3 style=\"color: var(--atomic-orange); margin-top: 0;\"\u003e📦 Kit Contents\u003c\/h3\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e12x Stainless Steel Intake Valves (+0.5mm Oversize)\u003c\/li\u003e\n\u003cli\u003e12x Stainless Steel Exhaust Valves (+0.5mm Oversize)\u003c\/li\u003e\n\u003cli\u003e24x Anti-Pump High Rev Hydraulic Lifters\u003c\/li\u003e\n\u003cli\u003e24x HD Double Roller Rockers\u003c\/li\u003e\n\u003cli\u003e24x High-Pressure Valve Springs (802 or 803 Spec)\u003c\/li\u003e\n\u003cli\u003e24x Titanium Retainers\u003c\/li\u003e\n\u003cli\u003e2x Billet Vernier Cam Sprockets\u003c\/li\u003e\n\u003cli\u003e1x VCT Delete Kit (Plates \u0026amp; Internal Spigots)\u003c\/li\u003e\n\u003cli\u003e24x Valve stem seals (standard height)\u003c\/li\u003e\n\u003cli\u003e0x Collets - Reuse your factory collets unless damaged. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #fffdf0; border: 1px solid #d4a017; padding: 20px; border-radius: 4px;\"\u003e\n\u003ch3 style=\"color: #b08d55; margin-top: 0;\"\u003eCompatibility Note\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003eThis package is designed to drop into standard Ford Barra DOHC cylinder head castings. The oversized stainless valves are compatible with standard factory valve seats (machining\/stoning required to accept the +0.5mm diameter). \u003cstrong\u003eEXTENDED HIGH LOAD USE APPLICATIONS REQUIRE SPECIAL ATTENTION. \u003c\/strong\u003eIf you are circuit racing, drifting, or otherwise spending more than 10 seconds a time at high load then you must take care in removing minimal material from the factory valve seats. For additional safety replacing valve seats should be considered. \u003c\/p\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/IMG_0014.jpg?v=1784890895\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0;\"\u003e\u003cstrong\u003eSuitability:\u003c\/strong\u003e Street, Drag, Drift, Burnout, and Marine applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CTA FOOTER --\u003e\n\u003cdiv class=\"atomic-section\" style=\"text-align: center; border-bottom: none;\"\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\u003ca href=\"#\" class=\"atomic-cta\"\u003eAdd to Cart\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atomic Performance Products","offers":[{"title":"Stage 4 | ~125lbs | 35+ psi | Ovate wire \/ Add VCT solenoid Block off kit - 18mm BA and early BF","offer_id":43692218286193,"sku":null,"price":4750.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 4 | ~125lbs | 35+ psi | Ovate wire \/ Add VCT solenoid block off kit - 20mm late BF - FG","offer_id":43692218318961,"sku":null,"price":4750.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 5 | ~145lbs | 35+ psi | Ovate wire \/ Add VCT solenoid Block off kit - 18mm BA and early BF","offer_id":43692218351729,"sku":null,"price":4750.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 5 | ~145lbs | 35+ psi | Ovate wire \/ Add VCT solenoid block off kit - 20mm late BF - FG","offer_id":43692218384497,"sku":null,"price":4750.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_head_and_valvetrain.jpg?v=1782736862","url":"https:\/\/atomicperformanceproducts.com\/products\/atomic-barra-hi-rev-valvetrain-package","provider":"Atomic Performance Products","version":"1.0","type":"link"}