{"product_id":"gsc-p-d-nissan-rb26dett-rb26-cylindrical-valve-spring-kit","title":"GSC P-D Nissan RB26DETT\/RB26 Cylindrical Valve Spring Kit","description":"\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eGSC Power-Division Cylindrical Valve Spring Kit with Ti Retainers — Nissan RB26DETT (5775)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eA complete single-spring valvetrain kit for the RB26 — 24 titanium retainers, 24 cylindrical valve springs, and 24 chromoly valve spring seats. Everything for both banks.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSized for a specific window.\u003c\/strong\u003e GSC positions this as the spring kit for a daily driver running an S1 or S2 cam profile that keeps boost below 32 psi and RPM below 8,500. If your build lives inside that envelope, this is the right kit. Past it, the conical spring kit is where you go.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSpring rates:\u003c\/strong\u003e 80 lbs at 1.319\" installed height, 199 lbs at 0.905\".\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eThe manufacturing detail matters more than it sounds.\u003c\/strong\u003e The springs are nano-peened and batched according to seat pressure within GSC's spec, so every spring in the set is matched. The titanium retainers are CNC machined to tolerances and repeatability GSC claims are unmatched — and the point of both is consistent seat pressure across all twelve cylinders' worth of valves. Uneven seat pressure across a head is how you get one cylinder that floats before the others.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eRound wire springs built with the same attention to detail as GSC's beehive kits.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eTitanium retainers cut reciprocating valvetrain mass\u003c\/strong\u003e, which raises the RPM at which the valvetrain goes unstable and reduces the load the spring has to control.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDo this while the head is off.\u003c\/strong\u003e Springs and retainers are a head-apart job, so if you're already in there for valves, guides, or a valve job, this is the time.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eVerify your cam profile before ordering.\u003c\/strong\u003e A spring that's wrong for the lobe either floats or coil binds, and both end the engine.\u003c\/p\u003e","brand":"Street Strip Supply","offers":[{"title":"Default Title","offer_id":47282936250541,"sku":null,"price":636.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/8105\/7197\/files\/gsc5775.jpg?v=1787268773","url":"https:\/\/streetstripsupply.com\/products\/gsc-p-d-nissan-rb26dett-rb26-cylindrical-valve-spring-kit","provider":"Street Strip Supply","version":"1.0","type":"link"}