{"product_id":"dunkive-complete-valve-grinding-kit-120-220-grit-compounds-2-lapping-sticks-4-suction-cups","title":"Dunkive Complete Valve Grinding Kit — 120 \u0026 220 Grit Compounds, 2 Lapping Sticks, 4 Suction Cups","description":"\u003cp\u003e\u003cstrong\u003eThe Dunkive Complete Valve Grinding Kit is a do-it-yourself set that resurfaces and reseals engine valves using 120 and 220 grit compounds, two lapping sticks with multiple suction cups, and protective gloves.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen valves wear or accumulate carbon, they can fail to make a tight seal against their seats, causing reduced compression, lost power and poor fuel economy. This all-in-one kit supplies coarse and fine abrasive pastes plus two manual lapping sticks and four suction cup sizes so you can restore valve-to-seat contact across cars, motorcycles, ATVs, lawn mowers and other small engines without sending heads to a machine shop.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit remove heavy deposits and damaged valve surfaces?\u003c\/h3\u003e\n\u003cp\u003eStart with the coarser 120 grit compound to cut through carbon, pitting and burnt material on the valve face and seat. The abrasive paste, paired with a firm suction cup and steady rotational motion, levels irregularities so the valve can later seal correctly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e120 grit (40 g) compound for aggressive cutting\u003c\/li\u003e\n  \u003cli\u003eTwo lapping sticks to match different valve diameters\u003c\/li\u003e\n  \u003cli\u003eFour suction cup sizes for secure contact on varied valve heads\u003c\/li\u003e\n  \u003cli\u003eManual control lets you monitor material removal and avoid over-grinding\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat finishes the sealing surface to make the valve gas-tight?\u003c\/h3\u003e\n\u003cp\u003eAfter coarse grinding, use the 220 grit (30 g) compound to smooth and polish the mating surfaces. The finer grit removes micro-scratches left by the coarse paste, improving seat contact and helping re-establish compression and reliable combustion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e220 grit paste for fine polishing and a smoother interface\u003c\/li\u003e\n  \u003cli\u003eShort lapping strokes and light pressure prevent new surface gouges\u003c\/li\u003e\n  \u003cli\u003eInspect with a light or marking compound to confirm full contact\u003c\/li\u003e\n  \u003cli\u003eRepeat as needed until a consistent seating ring appears\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich parts are included and how do they help different engines?\u003c\/h3\u003e\n\u003cp\u003eThe kit bundles everything required for basic valve reseating jobs: two dual-ended lapping sticks, coarse and fine compounds, multiple suction cup sizes and a pair of nitrile gloves. The variety of suction cups and two handles lets you match the tool to passenger car, motorcycle or small-engine valve geometries for safe, versatile use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo dual-ended lapping sticks for wider valve compatibility\u003c\/li\u003e\n  \u003cli\u003eFour suction cup sizes to fit small to larger valve faces\u003c\/li\u003e\n  \u003cli\u003eNitrile gloves for hand protection and cleaner handling\u003c\/li\u003e\n  \u003cli\u003eCompact kit design is suitable for home garages and mobile repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I get reliable grip and avoid suction cup slipping?\u003c\/h3\u003e\n\u003cp\u003eIf a suction cup spins freely on the handle or loses grip on the valve, a simple moisture trick stabilizes it. Wet the inside of the suction cup slightly before seating it on the valve face to increase friction and prevent unwanted rotation while lapping.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMoisten suction cup inner rim for better adhesion\u003c\/li\u003e\n  \u003cli\u003eMatch suction cup diameter to valve head for secure fit\u003c\/li\u003e\n  \u003cli\u003eUse short controlled strokes to feel contact progress\u003c\/li\u003e\n  \u003cli\u003eKeep compounds clean to avoid embedding contaminants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this kit is for: The Dunkive Complete Valve Grinding Kit is aimed at DIY mechanics, hobbyists and professional technicians who want a cost-effective way to restore valve sealing without specialized machining. It’s practical for routine valve maintenance, small engine tune-ups and light engine rebuilds where precise, manual reseating can return lost compression and improve drivability. If you need to remove heavy damage beyond the reach of hand lapping, consult a machine shop, but for most sealing and finishing jobs this kit provides the abrasives, tools and accessories needed to do the job at home or in a compact workshop.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this kit on motorcycle valves?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The two lapping sticks and multiple suction cup sizes are compatible with most motorcycle valve diameters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I know when the valve is properly seated?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You should see a continuous contact ring on the valve face; use light strokes with 220 grit to confirm a smooth, even seating.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Dunkive","offers":[{"title":"Default Title","offer_id":55161062555991,"sku":"B0GR96FFG4","price":30.62,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/dunkive-front-packaging-complete-kit.jpg?v=1790321543","url":"https:\/\/britishgarage.co.uk\/products\/dunkive-complete-valve-grinding-kit-120-220-grit-compounds-2-lapping-sticks-4-suction-cups","provider":"British Garage","version":"1.0","type":"link"}