{"product_id":"spa-2-5-long-block","title":"SPA 2.5 Long Block","description":"\u003cp\u003eK24 block \u003c\/p\u003e\n\u003cp\u003eHD Solid deck sleeves \u003cbr\u003eK24 crankshaft (serviced, balanced, polished, washed) \u003cbr\u003eHot tanked \u003cbr\u003eUltrasonic cleaned \u003cbr\u003eCNC decked \u003cbr\u003eCNC bored \u003cbr\u003eDiamond honed with torque plate \u003cbr\u003eO-ring \u003cbr\u003eAries HD piston kit with ultra duty wrist pins \u003cbr\u003eSpeed factory rods or Manley Rods \u003cbr\u003eKing bearing set \u003cbr\u003eOil pump chain \u003cbr\u003eOil pump chain guide \u003cbr\u003eOil pump chain tensioner \u003cbr\u003eBaffle plate \u003cbr\u003eModified F20C oil pump or HD Ported Type S\u003cbr\u003eBlue printed \u003cbr\u003eAssembled \u003cbr\u003eArp L19 head stud kit \u003cbr\u003eCometic Gasket \u003cbr\u003eK20z3 or K24a2 CNC ported cylinder head \u003cbr\u003eBrian Crower valve set \u003cbr\u003eBrian Crower spring kit \u003cbr\u003eBrian Crower retainers \u003cbr\u003eBrian Crower locks \u003cbr\u003eSupertech stem seals \u003cbr\u003eBrian Crower valve guides \u003cbr\u003eInstall guides \u003cbr\u003eHone valve guides \u003cbr\u003eHD comp valve job \u003cbr\u003eSurface deck \u003cbr\u003eBrian Crower Cams \u003cbr\u003eInline Pro timing chain tensioner \u003cbr\u003eTiming chain  \u003cbr\u003eLong block assembly \u003cbr\u003e50* cam gear\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eONLY WITH CUSTOMER SUPPLIED BLOCK \u0026amp; CRANK\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eADD HD DUCTILE IRON SLEEVES FOR $899\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eRace Engine Break-In Procedure\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eALL ENGINES NEED A BREAK IN TUNE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e50 weight break in oil \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProper engine break-in is critical to ensure maximum ring seal, bearing life, and overall engine performance. Every fresh engine should be broken in correctly before being subjected to full race conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBefore initial startup, verify all fluid levels, fuel pressure, and electrical connections. The oiling system should be primed prior to firing the engine to establish oil pressure and ensure all internal components are properly lubricated. To prime the oiling system, disable fuel and ignition and crank the engine over until oil pressure is established and visible on the gauge. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOn first startup, the engine should \u003cstrong\u003eimmediately\u003c\/strong\u003e be brought to 1800–2500 RPM (\u003cstrong\u003enot higher AND DO NOT THROTTLE JUMP\u003c\/strong\u003e) and held there for approximately 15–20 minutes while varying engine speed slightly. Avoid prolonged idling during this process. This initial heat cycle allows proper oil distribution, component stabilization, and confirms system operation. During this time, closely monitor oil pressure, coolant temperature, air\/fuel ratio, and inspect for any leaks or abnormal noises.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAfter the first heat cycle, allow the engine to cool completely and recheck all fluid levels, fittings, and general engine condition. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe next phase is the ring seating process. This is performed under load by driving the vehicle and making 8–12 controlled acceleration pulls. Start at approximately 2,500 RPM and apply 50–70% throttle up to 4500-5500 RPM without Vtech, then completely lift off the throttle and allow the engine to decelerate in gear. This process creates cylinder pressure to properly seat the piston rings while engine braking helps remove excess debris from the cylinder walls.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAvoid excessive idling, constant RPM cruising, lugging the engine, or extended full-throttle operation during this phase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAfter approximately 30 miles or the first race session, the engine oil and filter should be changed and inspected for any contamination or abnormal metal debris.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor the next 100 miles, continue operating the engine under varied load and RPM conditions while gradually increasing throttle input. Short full-throttle bursts may be introduced, but prolonged high-RPM (above 5500 rpm) operation should still be avoided until break-in is complete.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFollowing this procedure helps maximize compression, improve ring seal, reduce blow-by, and extend the life of your race engine.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HondaDaddy.com ","offers":[{"title":"Default Title","offer_id":43910052610126,"sku":null,"price":16800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/9287\/3294\/files\/FullSizeRender_386af9b7-21dd-4fd3-ab8e-2b03711f72fe.jpg?v=1773199157","url":"https:\/\/hondadaddy.com\/products\/spa-2-5-long-block","provider":"HondaDaddy.com ","version":"1.0","type":"link"}