{"product_id":"rb20-heavy-duty-valve-springs-plazmaman","title":"RB20 Heavy Duty Valve Springs - Plazmaman","description":"\u003cp\u003e** As Used by Australia's leading Workshops - your guarantee of performance and reliability **\u003c\/p\u003e\n\u003cp\u003eThese PRO SPRINGS suit the Nissan RB20 Twin Cam engine. Suitable for both NA and Turbo.\u003c\/p\u003e\n\u003cp\u003eThese springs are highly recommended for applications over 300rwkw , to help eliminate valve float. Valve float causes damage to valve stem seals and collets and retainers.\u003c\/p\u003e\n\u003cp\u003eOnce installed, a much more powerful and free revving top end power curve is possible. OEM valve springs have approx 50 psi seat pressure, once 15 psi is added to this equation (which acts against the valve spring), approximately only 35 psi seat pressure is left. This is nowhere near enough to keep the valves closed at high rpms.\u003c\/p\u003e\n\u003cp\u003eFEATURES :\u003c\/p\u003e\n\u003cp\u003eNew and Improved design\u003cbr\u003eDirect replacement for the OEM spring - straight drop in\u003cbr\u003eOEM retainers can be retained\u003cbr\u003eNITRIDE TREATED and shot peened Spring.\u003cbr\u003e84Lbs seated approx - Can be Shimmed to increase\u003c\/p\u003e\n\u003cp\u003ePremium quality - Quality Aussie made Drop in valve spring.\u003c\/p\u003e","brand":"Plazmaman","offers":[{"title":"Default Title","offer_id":42850861318224,"sku":"VSPR-RB20","price":395.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0089\/3045\/9728\/files\/VALVE-SPRINGS-2_9d412c32-c39b-4018-b722-ef9405636901.jpg?v=1786941711","url":"https:\/\/www.1320motorsports.com.au\/products\/rb20-heavy-duty-valve-springs-plazmaman","provider":"1320 Motorsports","version":"1.0","type":"link"}