{"product_id":"s63-engine-with-forged-internals-bmw-m5-m6-x5m-x6m","title":"S63 Engine with Forged Internals | BMW M5\/M6\/X5M\/X6M","description":"\u003cp\u003e\u003cstrong\u003e\u003cem\u003e*Note – Core charge may apply. Contact us for details.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eIncudes: Forged Rods, Forged Pistons, Pined crankshaft, labor and machine work to install them into the block.\u003c\/p\u003e \u003cp\u003eHigh performance CarBahn valve springs can be ordered separately.\u003c\/p\u003e \u003cp\u003eThis engine is designed for maximum output of between 880-1000 lb\/ft torque.\u003c\/p\u003e \u003cp\u003eThis engine is the lower end only. This engine is for owners who have low mileage cars that have not had an engine failure and do not need a complete overhaul but just want a stronger engine for higher power applications. It is designed to make the S63 engine strong enough to handle high boost applications.\u003c\/p\u003e \u003cp\u003eThe S63TU engine is not designed to have large increase in boost. CarBahn has designed a high-performance engine to handle very high outputs by utilizing higher quality racing components.\u003c\/p\u003e \u003cp\u003eThe stock engine compression ratio is relatively high due to the Corporate Average Fuel Economy (CAFE) standards which push for consistently higher fuel economy in cars and trucks. However, this increased compression limits engine performance with higher boost settings by decreasing the size of the fuel-air charge in the combustion chamber, forcing the ignition timing to retard far below MBT (mean best timing, the theoretical optimal ignition timing). Therefore, the CarBahn S63 engine has 0.5 less compression to optimize the engine for the increased boost. In an emissions-legal street car, the lowered compression has the added benefit of reducing catalyst inlet temperatures and improved drive-ability on pump gas.\u003c\/p\u003e \u003ch5\u003eCarBahn History\u003c\/h5\u003e \u003cp\u003eSteve Dinan has been building high performance and racing engines for BMW’s since 1977! Winning 12 racing championships including 3 prototype championships and two - 24 hours of Daytona. The same engine shop that builds the racing engines also builds the street car engines. This group of talented engineers, Engine machinist and engine builders has built hundreds of engines. From rebuilds to developing engines making over 625hp on an S65 and over 740hp on an S85.\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cb\u003eEngine core acceptance parameters\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eMust be complete core (factory engine, from oil pan to valve cover)\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBlock must have no: \u003cul\u003e \u003cli\u003eHoles or cracks in casting\u003c\/li\u003e \u003cli\u003eHoles or crack in covers\u003c\/li\u003e \u003cli\u003eBore damage that cannot be honed out\u003c\/li\u003e \u003cli\u003eThrust surface damage\u003c\/li\u003e \u003cli\u003eJournal surfaces damage\u003c\/li\u003e \u003cli\u003eBolt hole damage that can’t be repaired\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eHeads must have no: \u003cul\u003e \u003cli\u003eHoles or cracks in casting\u003c\/li\u003e \u003cli\u003eHoles or crack in covers\u003c\/li\u003e \u003cli\u003eThrust surface damage\u003c\/li\u003e \u003cli\u003eJournal surfaces damage\u003c\/li\u003e \u003cli\u003eBolt hole damage that can’t be repaired\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eAdditional repair charges could apply for damaged items that are not normally changed during an overhaul and cannot be repaired or serviced \u003cul\u003e \u003cli\u003eValves\u003c\/li\u003e \u003cli\u003eCrankshafts\u003c\/li\u003e \u003cli\u003eCamshafts\u003c\/li\u003e \u003cli\u003eGuides\u003c\/li\u003e \u003cli\u003eValveTronic mechanism\u003c\/li\u003e \u003cli\u003eVanos mechanism\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003ehttps:\/\/www.youtube.com\/watch?v=WSHusoVQm8o\u003c\/p\u003e","brand":"CarBahn","offers":[{"title":"Default Title","offer_id":41597423845439,"sku":"CB063-6011","price":15999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0046\/5770\/9120\/files\/S63-Forged-Internals-1-scaled-1_7c7c6d9d-2146-4ced-8579-04abdbd89d23.jpg?v=1743438893","url":"https:\/\/shop.precision-sport.com\/products\/s63-engine-with-forged-internals-bmw-m5-m6-x5m-x6m","provider":"Precision Sport Industries","version":"1.0","type":"link"}