{"product_id":"acl-trimetal-reinforced-rod-bearings-porsche-911-930-3-0l-77-83","title":"ACL Race Series connecting rod bearings for Porsche 911 930 3.0L (77-83)","description":"\u003cp\u003eACL Race Series connecting rod bearings for Porsche 911 930 3.0L (77-83) (part number 6B2462H), designed for engines that will operate under much higher loads and RPMs than stock.\u003c\/p\u003e\u003cp\u003eThey feature a tri-metal structure with a steel backing, a copper, lead, and tin lining, a nickel barrier, and a soft overlay that conforms and prevents seizing even under very high loads. On the connecting rod bearings, the overlay is thinner to better withstand fatigue.\u003c\/p\u003e\u003cp\u003eThe Race Series have greater housing interference and a slightly more eccentric shape than standard bearings, two details designed to keep the bearing from moving and ensure proper lubrication when the block and connecting rod deform under load.\u003c\/p\u003e\u003cp\u003eIn standard size, ACL specifies them for a rod journal of 52.971 to 52.990 mm, with a bearing width of 17.8 mm. For this diameter, an oil clearance of approximately 0.055 to 0.066 mm is recommended, measured with a micrometer and bore gauge. If the crankshaft is reground, the dimensions change.\u003c\/p\u003e\u003cp\u003eThey do not have the final silver tin coating found on standard bearings, so their dark, brownish-black and bluish color is factory-standard and does not indicate any defect. ACL advises against polishing the bearing surface to adjust clearance; if more is needed, combine them with the HX version, which provides an additional 0.025 mm of clearance.\u003c\/p\u003e\u003cp\u003eNot sure if your crankshaft is at standard size? Write to us with your engine code and we will help you choose.\u003c\/p\u003e","brand":"ACL","offers":[{"title":"Default Title","offer_id":50813139779918,"sku":"6B2462H-STD","price":104.25,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/7329\/0062\/files\/810f828e37f46222c9fe10cb675e327f.jpg?v=1735904093","url":"https:\/\/driftandgrip.com\/en\/products\/acl-trimetal-reinforced-rod-bearings-porsche-911-930-3-0l-77-83","provider":"Drift \u0026 Grip","version":"1.0","type":"link"}