{"product_id":"el-ef-4-0l-sohc-ross-racing-forged-piston","title":"EL \/ EF 4.0L SOHC Ross Racing Forged Piston","description":"\u003ch4\u003eRoss Racing Forged Pistons for EL \/ EF 4.0L SOHC\u003c\/h4\u003e\r\n\u003cp\u003eThese are a custom piston made by Ross for Spool Imports.\u003c\/p\u003e\r\n\u003cp\u003ePistons are available in:\u003c\/p\u003e\r\n\u003cul\u003e\r\n    \u003cli\u003eCompression Ratio: 9:1\u003c\/li\u003e\r\n    \u003cli\u003eBore Size: +0.5mm\/+1mm\u003c\/li\u003e\r\n    \u003cli\u003e0.200\" (5mm) Tool steel 52100 gudgeon pins\u003c\/li\u003e\r\n    \u003cli\u003ePistons come with rings, gudgeon pins and pin locks\u003c\/li\u003e\r\n    \u003cli\u003eForged 2618\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e Rated at 1000HP by Ross Racing\u003c\/p\u003e\r\n\u003ch4\u003eRoss Racing Pistons:\u003c\/h4\u003e\r\n\u003cp\u003eAll ROSS Racing Pistons (since 1985) have been forged from 2618 billet bar stock and have been heat treated and aged to a T61 condition (2618-T61). 2618-T61 is the material that is used when fatigue resistance and durability are of prime importance by all premium racing piston manufacturers.\u003c\/p\u003e\r\n\u003cp\u003eThis material has less than 1% silicon particulate content. High silicon content pistons (forged from 4032 or MS75) will not stand up to the most extreme stress placed on many racing pistons. If a crack starts to form in a high silicon piston it will continue until the piston experiences a catastrophic failure. Simply stated, adding sand to the aluminum only makes it more brittle. In the rare instance of a 2618-T61 piston cracking, the crack will continue to an area where the stress is not as great and will then stop. Another advantage of 2618-T61 over the high silicon pistons is the ability to keep its shape under extreme pressure and high RPM's. \"Skirt Shrinking\" is not a problem with ROSS Racing Pistons.\u003c\/p\u003e\r\n\u003ch2\u003eAvailable options\u003c\/h2\u003e\u003cul\u003e\u003cli\u003ePiston Option: +.5mm \/ 8.5:1; +.5mm \/ 9:1; +1mm \/ 9:1\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eEngine build fitment\u003c\/h2\u003e\u003cp\u003eford-ea-au-sohc. Match the selected dimensions, engine generation and rotating assembly specification before machining or assembly.\u003c\/p\u003e\u003ch2\u003eInstallation and BBT workshop support\u003c\/h2\u003e\u003cp\u003eConfirm finished bore size, piston-to-wall clearance, compression height, pin specification, ring gaps and valve clearance against the supplied piston documentation.\u003c\/p\u003e\u003cp\u003eBuilt by Boost \u0026amp; Tune is an authorised Spool Imports dealer and can assist with component selection, engine assembly and tuning requirements for your build.\u003c\/p\u003e","brand":"Ross Racing Pistons","offers":[{"title":"+.5mm \/ 8.5:1","offer_id":67601298849859,"sku":"BBT-SP-BDD63A5BE456B64C","price":1750.0,"currency_code":"AUD","in_stock":true},{"title":"+.5mm \/ 9:1","offer_id":67601298882627,"sku":"BBT-SP-44FC6DFC78A9C53E","price":1750.0,"currency_code":"AUD","in_stock":true},{"title":"+1mm \/ 9:1","offer_id":67601298915395,"sku":"BBT-SP-BBE93EDDBA40E001","price":1750.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/0659\/4883\/files\/spool-27808e334d26-el-ef-ross-piston-1_af5ede3c-6ecb-4dcf-aa60-3a389c452d59.png?v=1790918678","url":"https:\/\/builtbyboostandtune.com.au\/products\/el-ef-4-0l-sohc-ross-racing-forged-piston","provider":"BUILT BY BOOST AND TUNE","version":"1.0","type":"link"}