{"product_id":"s65-4-1l-supercharger-turbocharger-engine","title":"S65 4.1L Supercharger\/Turbocharger Engine","description":"\u003cp\u003eThe CarBahn S65 4.1L bored engine is built features high performance over-sized forged pistons, a forged crankshaft with stock stroke, and high-strength forged Carrillo connecting rods. The bore is increased to 92.5 mm.\u003c\/p\u003e \u003cp\u003eWe do a complete rebuild that increases power and improves durability with Clevite-CarBahn racing rod bearings, CarBahn valve springs, an MLS (Multi-Layer Steel) head gasket, a valve job with new hydraulic lifters, plus timing chains, timing chain guides, timing chain tensioners and all associated seals and gaskets.\u003c\/p\u003e \u003cp\u003eTo facilitate more boost, the engine has been re-engineered to be a forced induction engine with lower compression, more crown height to dissipate heat, thicker rings, and stronger connecting rods. The engine can be purchased in 3 compression ratios: 10:0-1, 10.5-1, and 11:0-1.\u003c\/p\u003e \u003cp\u003eSteve Dinan has been building high performance and racing engines for BMW’s since 1977, winning 11 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; these talented engineers, machinists, and builders have built hundreds of engines from OEM street rebuilds to full-blown racing engines.\u003c\/p\u003e \u003cp\u003eThe CarBahn Autoworks S65 4.1L bored engine is built featuring high performance over-sized forged pistons, a forged crankshaft with stock stroke, and high-strength forged Carrillo connecting rods. The bore is increased to 92.5 mm.\u003c\/p\u003e \u003cp\u003eWe do a complete rebuild that increases power and improves durability with Clevite-CarBahn racing rod bearings, CarBahn Autoworks valve springs, an MLS (Multi-Layer Steel) head gasket, a valve job with new hydraulic lifters, plus timing chains, timing chain guides, timing chain tensioners and all associated seals and gaskets.\u003c\/p\u003e \u003cp\u003eTo facilitate more boost, the engine has been re-engineered to be a forced induction engine with lower compression, more crown height to dissipate heat, thicker rings, and stronger connecting rods. The engine can be purchased in 3 compression ratios: 10:0-1, 10.5-1, and 11:0-1.\u003c\/p\u003e \u003cp\u003e\u003cspan\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\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/WSHusoVQm8o?si=bKK28LjLFz7dexMQ\" height=\"315\" width=\"560\" allowfullscreen=\"\" referrerpolicy=\"strict-origin-when-cross-origin\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e \u003c!----\u003e","brand":"CarBahn","offers":[{"title":"Default Title","offer_id":41597425483839,"sku":"CB065-6001","price":21995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0046\/5770\/9120\/files\/S-valve-springs-S65-1_0cb30908-84f9-4582-95ec-7626b8b1c8b8.jpg?v=1743439092","url":"https:\/\/shop.precision-sport.com\/products\/s65-4-1l-supercharger-turbocharger-engine","provider":"Precision Sport Industries","version":"1.0","type":"link"}