{"product_id":"engine-component-spring-seats","title":"Engine Component Spring Seats","description":"This process is essential for high-performance and race engines that require precise tuning to achieve higher RPM ranges smoothly and without issue. Blueprinting an engine, a standard procedure for optimizing clearances and ensuring uniform specifications, can be a time-consuming and costly service. Tomei's valve spring seats offer a more cost-effective solution to achieve similar objectives.\n\nBy employing these valve spring seats, engine builders can fine-tune the load applied to each spring to match different spring rates. This ensures that all components are balanced to tighter clearances than manufacturer specifications, preventing potential issues such as valve spring surge, sticky operation under load, power loss, and in severe cases, cotter pin disengagement which can lead to significant engine damage. For example, when installing Tomei Type A valve springs in an RB26 engine, these seats can restore the spring load to the desired 24kg range after a valve job has reduced it below 20kg, allowing the engine to rev freely.\n\nThis specific valve spring seat is 0.5mm thick and comes in a set of 8 pieces. It is engineered for compatibility with a range of performance engines, including Mitsubishi 4G63 (EVO 1-9) and various Subaru EJ series engines (EJ205, EJ207, EJ255, EJ257). It is suitable for applications such as the Mitsubishi Lancer EVO 1-9 (1992-2007), Subaru WRX (2015-2021), and Subaru WRX STI models.","brand":"Tomei","offers":[{"title":"Default Title","offer_id":52873036169528,"sku":"TA305A-MT01C","price":9.9,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/engine-component-spring-seats","provider":"MOTORMIA","version":"1.0","type":"link"}