{"title":"BMW F92 M8 Engines \u0026 Engine Components","description":"","products":[{"product_id":"dc526-2460-valve-spring-kit-s63-high-performance-valve-springs","title":"S63 High Performance Valve Spring Kit | BMW F9X M5\/M6\/M8\/X5M\/X6M","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eWe include high performance valve springs with our engine, however you can purchase the springs separately. Our springs increase valve spring pressure by 20%. We also keep the steel retainers for long term durability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSteve Dinan has been building racing and high performance road car engines for over 40 years. We are concerned about the trend in high performance valve springs on the new S63 engines. Companies are selling springs with very high spring rates that will rob power and dramatically increase valve train wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch5\u003eTheory\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe goal of a valve spring pressure is to make it as low as possible. This is because compressing a spring takes energy and robs potential power. In addition, more valve spring pressure increases valve train wear. We work very hard at running just enough valve spring pressure to keep the follower in contact with the camshaft but no more. If you increase the RPM you increase the valve spring just enough to manage the inertia from the increased RPM. The valve spring also needs enough seat pressure and the correct frequency not to bounce when the valve is closed. This is to avoid leaking trapped mass (the fuel air charge).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch5\u003eBoosted Engine\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eWith a boosted engine you will need a slight increase in pressure to push back against the boost pressure in the intake trying to hold the valve open. This amount of pressure added is much less than the pressure to control the inertia of the valve train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch5\u003eConclusion\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eIf you double the boost pressure you do not need to double the spring pressure since only about 20% of the spring pressure is to control the boost pressure and 80% is to control the valve train mass. An additional 20% of valve spring pressure is all you need to run.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty \u0026amp; Additional Information\u003c\/strong\u003e\u003cbr\u003eOur engines are very strong and can often be very reliable even at power levels above what is recommended. The durability usually depends on the quality and the reliability of the tune and other aftermarket components added to the engine management system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eEngines with CarBahn Software Tunes\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003eAll engines listed with a stage number are designed to be road car engines and are covered for 2 years, 24,000 miles providing they have a CarBahn tune and there are no other parts on the car that have caused a premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eEngines with Another Company's Tune\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eAll engines listed with a stage number are designed to be road car engines and are covered are covered for 2 year, 24,000 miles providing they you stay under our recommended torque limits. Torque limits are indicated on our web site. Warranty does not cover failures from the tune or aftermarket fuel injection components that caused the failure. It is CarBahn full discretion to determine cause of failure. \u003cspan\u003eIf Torque limit is exceeded the warranty is for materials and workmanship only.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eRacing Engines\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003eRacing engines are designed to be raced and are covered for materials and workmanship only. Racing engines should be rebuilt periodically based on run time or mileage. Warranty does not cover failures from the tune or aftermarket fuel injection components that caused the failure. It is CarBahn full discretion to determine cause of failure. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-is-last-node=\"\" data-end=\"939\" data-start=\"793\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/l1l5J-j82eQ?si=rLiHp2pCf_u4KXY0\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"CarBahn","offers":[{"title":"Default Title","offer_id":49259646746941,"sku":"DC526-2460","price":795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/1896\/8125\/files\/S63-Valve-Springs-2-scaled-1.jpg?v=1724164841"},{"product_id":"stage-3-s63-high-performance-engine-tu4-bmw-m5-m8","title":"S63 High Performance Racing Engine (TU4) | BMW F9X M5\/M8","description":"\u003cp data-start=\"0\" data-end=\"506\"\u003eThe CarBahn BMW S63 engine is specifically designed for high-performance outputs, addressing the limitations of stock boost levels. Utilizing superior racing components like forged Carrillo connecting rods, CP forged pistons, high-performance valve springs, ported heads, and a reground crankshaft with stronger bearings, this rebuild is perfect for BMW performance enthusiasts. It also includes a complete valve job, timing chains, tensioners, water pump, thermostat, and new seals, bearings, and gaskets.\u003c\/p\u003e\n\u003cp data-start=\"508\" data-end=\"827\"\u003eThe stock high compression ratio, designed for CAFÉ (Corporate Average Fuel Economy), reduces engine performance at higher boost levels. CarBahn's engine lowers the compression by 0.5 to optimize boost and improve drivability on pump gas, while also reducing catalyst inlet temperatures for emissions-legal street cars.\u003c\/p\u003e\n\u003cp data-start=\"829\" data-end=\"1106\"\u003eKey features include forged rods, forged pistons, high-performance valve springs, ported heads, and a reground crankshaft with stronger bearings, along with labor and machine work for a full overhaul. As a top BMW tuning company, CarBahn ensures a reliable, high-output engine.\u003c\/p\u003e\n\u003cp data-start=\"1108\" data-end=\"1146\"\u003e\u003cstrong data-start=\"1108\" data-end=\"1145\"\u003eEngine core acceptance parameters\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"1147\" data-end=\"1480\"\u003e\n\u003cli data-start=\"1147\" data-end=\"1202\"\u003eComplete factory engine (from oil pan to valve cover)\u003c\/li\u003e\n\u003cli data-start=\"1203\" data-end=\"1283\"\u003eBlock must be free of cracks, holes, bore damage, and other irreparable issues\u003c\/li\u003e\n\u003cli data-start=\"1284\" data-end=\"1359\"\u003eHeads must be free of casting cracks, hole damage, and irreparable issues\u003c\/li\u003e\n\u003cli data-start=\"1360\" data-end=\"1480\"\u003eAdditional repair charges apply for damaged valves, crankshafts, camshafts, guides, or mechanisms (ValveTronic\/Vanos).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1482\" data-end=\"1585\" data-is-last-node=\"\"\u003eCarBahn offers exceptional BMW S63 engine tuning for those looking to maximize their BMW’s performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty \u0026amp; Additional Information\u003c\/strong\u003e\u003cbr\u003eOur engines are very strong and can often be very reliable even at power levels above what is recommended. The durability usually depends on the quality and the reliability of the tune and other aftermarket components added to the engine management system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eEngines with CarBahn Software Tunes\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003eAll engines listed with a stage number are designed to be road car engines and are covered for 2 years, 24,000 miles providing they have a CarBahn tune and there are no other parts on the car that have caused a premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eEngines with Another Company's Tune\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eAll engines listed with a stage number are designed to be road car engines and are covered are covered for 2 year, 24,000 miles providing they you stay under our recommended torque limits. Torque limits are indicated on our web site. Warranty does not cover failures from the tune or aftermarket fuel injection components that caused the failure. It is CarBahn full discretion to determine cause of failure. \u003cspan\u003eIf Torque limit is exceeded the warranty is for materials and workmanship only.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eRacing Engines\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003eRacing engines are designed to be raced and are covered for materials and workmanship only. Racing engines should be rebuilt periodically based on run time or mileage. Warranty does not cover failures from the tune or aftermarket fuel injection components that caused the failure. It is CarBahn full discretion to determine cause of failure. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-is-last-node=\"\" data-end=\"939\" data-start=\"793\"\u003e \u003c\/p\u003e","brand":"CarBahn","offers":[{"title":"Stock Compression","offer_id":49286068273469,"sku":"CB463-6003-SC","price":28995.0,"currency_code":"USD","in_stock":true},{"title":"Low Compression","offer_id":49286068306237,"sku":"CB463-6003-LC","price":28995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/1896\/8125\/files\/stage-3-s63.jpg?v=1762220899"},{"product_id":"stage-1-s63-high-performance-engine-tu4-bmw-m5-m8","title":"Stage 1 S63 High Performance Engine (TU4) | BMW F9X M5\/M8","description":"\u003cp\u003eStage 1 S63 TU4 High Performance Engine: F90 M5, F91, F92, F93 M8\u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"549\"\u003eThe CarBahn ST1 S63 engine is rated for up to 850 lb-ft of torque. It is designed to improve durability for medium-output tunes, making it an excellent alternative to an OEM factory remanufactured engine, especially if your original engine has failed and is no longer under warranty. We utilize high-quality racing components, including Carrillo connecting rods, forged CP pistons, high-performance valve springs, and a high-performance head gasket. This engine maintains the stock compression ratio, ensuring excellent drivability and fuel economy.\u003c\/p\u003e\n\u003cp data-start=\"551\" data-end=\"1044\"\u003eThe CarBahn S63 engine is both stronger and more affordable than the BMW OEM factory engine, making it the ideal choice for BMW S63 performance enthusiasts. Steve Dinan's engine shop, with 46 years of experience, has built engines that have won numerous championships, including three prototype racing championships and two overall wins in the 24 Hours of Daytona (2011-2013). You won’t find a higher-quality engine from any other BMW tuning company. All engines come with a two-year warranty.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eExperience the power and performance of S63 engine tuning with CarBahn.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSteve Dinan has been building high performance and racing engines for BMW 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\n\u003cp\u003eFrom stock, the S63 engine is not designed for a large increase in boost. CarBahn has designed a high-performance engine to handle very high outputs by utilizing higher quality racing Carrillo connecting rods and forged CP pistons.\u003c\/p\u003e\n\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\n\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cb\u003eEngine core acceptance parameters\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eMust be complete core (factory engine, from oil pan to valve cover)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBlock must have no:\n\u003cul\u003e\n\u003cli\u003eHoles or cracks in casting\u003c\/li\u003e\n\u003cli\u003eHoles or crack in covers\u003c\/li\u003e\n\u003cli\u003eBore damage that cannot be honed out\u003c\/li\u003e\n\u003cli\u003eThrust surface damage\u003c\/li\u003e\n\u003cli\u003eJournal surfaces damage\u003c\/li\u003e\n\u003cli\u003eBolt hole damage that can’t be repaired\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeads must have no:\n\u003cul\u003e\n\u003cli\u003eHoles or cracks in casting\u003c\/li\u003e\n\u003cli\u003eHoles or crack in covers\u003c\/li\u003e\n\u003cli\u003eThrust surface damage\u003c\/li\u003e\n\u003cli\u003eJournal surfaces damage\u003c\/li\u003e\n\u003cli\u003eBolt hole damage that can’t be repaired\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdditional repair charges could apply for damaged items that are not normally changed during an overhaul and cannot be repaired or serviced\n\u003cul\u003e\n\u003cli\u003eValves\u003c\/li\u003e\n\u003cli\u003eCrankshafts\u003c\/li\u003e\n\u003cli\u003eCamshafts\u003c\/li\u003e\n\u003cli\u003eGuides\u003c\/li\u003e\n\u003cli\u003eValveTronic mechanism\u003c\/li\u003e\n\u003cli\u003eVanos mechanism\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ehttps:\/\/www.youtube.com\/watch?v=WSHusoVQm8o\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty \u0026amp; Additional Information\u003c\/strong\u003e\u003cbr\u003eOur engines are very strong and can often be very reliable even at power levels above what is recommended. The durability usually depends on the quality and the reliability of the tune and other aftermarket components added to the engine management system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eEngines with CarBahn Software Tunes\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003eAll engines listed with a stage number are designed to be road car engines and are covered for 2 years, 24,000 miles providing they have a CarBahn tune and there are no other parts on the car that have caused a premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eEngines with Another Company's Tune\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eAll engines listed with a stage number are designed to be road car engines and are covered are covered for 2 year, 24,000 miles providing they you stay under our recommended torque limits. Torque limits are indicated on our web site. Warranty does not cover failures from the tune or aftermarket fuel injection components that caused the failure. It is CarBahn full discretion to determine cause of failure. \u003cspan\u003eIf Torque limit is exceeded the warranty is for materials and workmanship only.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003cstrong\u003eRacing Engines\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003eRacing engines are designed to be raced and are covered for materials and workmanship only. Racing engines should be rebuilt periodically based on run time or mileage. Warranty does not cover failures from the tune or aftermarket fuel injection components that caused the failure. It is CarBahn full discretion to determine cause of failure. \u003c\/li\u003e\n\u003c\/ul\u003e\n. \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-is-last-node=\"\" data-end=\"939\" data-start=\"793\"\u003e \u003c\/p\u003e","brand":"CarBahn","offers":[{"title":"Default Title","offer_id":49291471782205,"sku":"CBB06-08-5012","price":24995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/1896\/8125\/files\/stage-1-s63.jpg?v=1762365125"},{"product_id":"stage-2-s63-high-performance-engine-tu4-bmw-m5-m8","title":"Stage 2 S63 High Performance Engine (TU4) | BMW F9X M5\/M8","description":"\u003cp\u003e\u003cspan data-contrast=\"none\" lang=\"EN-US\" class=\"TextRun SCXW150768990 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003e\u003cmeta charset=\"utf-8\"\u003eStage 2 S63 TU4 High Performance Engine: F90 M5, F91, F92, F93 M8\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-contrast=\"none\" lang=\"EN-US\" class=\"TextRun SCXW150768990 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003eThis S63 engine is designed to make for maximum power applications up to 850 RWTQ \u003c\/span\u003e\u003cspan class=\"NormalTextRun SpellingErrorV2Themed SCXW150768990 BCX0\"\u003eCarBahn\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003e has designed a high-performance engine to handle \u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003every high\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003e outputs by pinning the cam sprocket to the crankshaft. To ensure durability we also machine the block to accommodate a full circle thrust main. In addition, we \u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003eutilize\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003e higher quality racing Carrillo connecting rods, forged CP pistons, cylinder head studs, high performance valve springs, cylinder head porting and lowered compression for increased flow and high boost\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW150768990 BCX0\"\u003e.\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-ccp-props='{\"201341983\":0,\"335557856\":16777215,\"335559739\":300,\"335559740\":240}' class=\"EOP SCXW150768990 BCX0\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSteve Dinan has been building high performance and racing engines for BMW 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\n\u003cp\u003eFrom stock, the S63 engine is not designed for a large increase in boost. CarBahn has designed a high-performance engine to handle very high outputs by utilizing higher quality racing Carrillo connecting rods and forged CP pistons.\u003c\/p\u003e\n\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 Autoworks 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.\u003cspan style=\"font-size: large;\"\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"CarBahn","offers":[{"title":"Default Title","offer_id":49291552063805,"sku":"CBB06-08-5122","price":25995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/1896\/8125\/files\/stage-2-s63.jpg?v=1762365195"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/1896\/8125\/collections\/CBB463-6003_de98b246-8dcb-4c2d-b1b9-ba004dd30c2b.png?v=1762233660","url":"https:\/\/carbahn.com\/collections\/bmw-f92-m8-engines-engine-accessories.oembed","provider":"CarBahn","version":"1.0","type":"link"}