{"product_id":"prp-rb26-head","title":"Nissan RB26 Cast Cylinder Heads (Pre-Order)","description":"\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e$100 Non refundable spot in the queue only\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eThis is for serious buyers to receive preference upon release in the order that deposits are received hence the small deposit value. \u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eNOTE: BALANCE PAYABLE UPON OFFICIAL RELEASE. (Head package options can be changed before delivery) \u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003c\/b\u003e\u003cb\u003eCylinder Heads:\u003cbr\u003e(Pricing is approximate machined core cost and subject to change prior to official release, complete packages will be available)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntroducing 4 off the shelf head packages\u003c\/strong\u003e. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eR0 Street Series\u003c\/strong\u003e \u003cspan\u003eDirect replacement pre machined head with 1mm oversized valving improved flow and efficiency over the R0 OEM, ready to build $7700 AUD\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePorting supports OEM style builds between 180-225 CFM\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eR0 Race Series\u003c\/strong\u003e, Direct replacement pre machined head with 1mm oversized valving improved flow and efficiency over the R0 OEM, ready to build $9000 AUD\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThis option is modifiable well beyond the capabilities of the standard 05U cylinder head, (Chamber and porting will be available as extras) theoretically supports up to 275 CFM\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cstrong\u003eR1 Race Series\u003c\/strong\u003e, R1 platform, 6mm raised exhaust ports and flange, 35mm buckets, 5 angle seat cut 34-36mm intake, 32 mm exhaust seats. Theoretical flow supports 325 + CFM $10,000~ dependent on specifications\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cstrong\u003eR1 Pro Series\u003c\/strong\u003e, R1 platform, 35mm buckets, 6mm raised exhaust ports, 37-37.5mm intake, 33mm exhaust, port and clover leaf chamber work supplied, 90mm bore only, supports 375 CFM (theoretical) $10,000~ dependent on specifications\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eBasic Head Options:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe offer lobe relief RB26 heads modified to fit big lift cams.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe will provide several stages of porting, tailored to your needs. The standard porting offers smooth airflow for up to 800hp.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eAll variants of PRP heads come pre machined to include the following:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e* Finished cam tunnels\u003cbr\u003e* Valve guides fitted \u003cbr\u003e* Valve seats fitted and 5 angle finished\u003cbr\u003e* All threads and mating surfaces finished\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eEnhanced Durability:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe cast material chosen is the ulitimate in late model alloys available, it’s also heat treated and stabilised prior to machining.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe reinforce the material under the squish areas of the chambers to prevent port and general head cracking.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eChamber Customization:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOur heads can be configured with open or closed chambers for the R0 and R1 Race heads and cloverleaf in the R1 PRO series heads to suit your desired horsepower.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eStud Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eStandard heads are optioned M12 studs, we support upgrades to 9\/16th head studs with added material.\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDeck Thickness:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOur heads feature an 10mm deck thickness, OEM variants typically range from 4-6mm as a comparision. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eOil Gallery Modifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe've relocated the main oil galleries to accommodate (35mm lifter\/bucket), enabling higher RPM capabilities, spring, valve and camshaft options.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eInjector Options:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eChoose between single or twin injector ports in the cylinder head, equal spaced dual injectors are recommended as close to the port entry as possible.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eImproved Construction:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003ePRP RB cylinder heads utilize threaded bungs instead of welch plugs other than the front and rear to support commonly used water intake and drain accessories, \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003ewe have included threaded oil galleries with bungs at both the front and back for serviceability. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/mcsxGA0w5MU?si=xZ-V4xCAxpZUZfCe\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/AyN3j2Y579Y?si=Jm3CINWgnXlvMRR5\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Platinum Racing Products","offers":[{"title":"R0 Street Series","offer_id":44829307404520,"sku":"PC05010040S","price":12678.0,"currency_code":"JPY","in_stock":true},{"title":"R0 Race Series","offer_id":44829307437288,"sku":"PC05010040R","price":12678.0,"currency_code":"JPY","in_stock":true},{"title":"R1 Race Series","offer_id":44829307470056,"sku":"PC05010041R","price":12678.0,"currency_code":"JPY","in_stock":true},{"title":"R1 Pro Series","offer_id":48613171822824,"sku":"PC05010041P","price":12678.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0354\/8135\/4376\/files\/Untitleddesign_12.png?v=1740965523","url":"https:\/\/www.platinumracingproducts.com\/en-jp\/products\/prp-rb26-head","provider":"Platinum Racing Products","version":"1.0","type":"link"}