{"product_id":"bilitools-valve-spring-compressor-lapping-kit-13-piece-set-c-clamp-16-30mm-adapters","title":"BILITOOLS Valve Spring Compressor \u0026 Lapping Kit, 13‑Piece Set — C‑Clamp, 16–30mm Adapters","description":"\u003cp\u003e\u003cstrong\u003eBILITOOLS 13PCS Valve Spring Compressor Tools is a complete C-clamp compressor and valve-lapping set that lets you remove, install and lap valves and seals on cylinder heads removed from the engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact kit brings together a C-clamp style valve spring compressor, multiple adapter sizes, straight valve stem seal pliers and two wooden valve lappers so you can service retainers, keepers, seals and valve faces without buying separate specialty tools. Everything nests in a molded storage case for transport and organized storage, and the adapter range covers many common cars, motorcycles, ATVs and small engines when used on removed cylinder heads.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit make cylinder head valve work easier?\u003c\/h3\u003e\n\n\u003cp\u003eThe C-clamp compressor gives controlled, centered compression of valve springs so keepers and retainers are exposed for safe removal or installation. The included straight valve stem seal pliers reach into confined spring pockets, eliminating awkward tool angles and reducing the risk of damaging seals. Two valve lappers with four cup sizes let you manually lap valve faces to seats when needed.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eC-clamp jaw for secure, centered spring compression\u003c\/li\u003e\n  \u003cli\u003eThree extension screws to adapt clamp reach for various head depths\u003c\/li\u003e\n  \u003cli\u003eStraight pliers designed for tight stem seal access\u003c\/li\u003e\n  \u003cli\u003eTwo wooden lappers with four rubber cups for valve-to-seat smoothing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engine types and valve sizes will this 13-piece set work on?\u003c\/h3\u003e\n\n\u003cp\u003eThis toolset is intended for cylinder heads that have been removed from the engine and will fit many small- to medium-displacement engines. The five metal adapters in 16, 19, 23, 25 and 30 mm cover a broad range of valve spring retainer diameters and recessed seat layouts commonly found on cars, motorcycles, ATVs and lawn equipment. Always verify adapter size and spring geometry before use.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSuitable for automotive, motorcycle and small-engine cylinder heads\u003c\/li\u003e\n  \u003cli\u003eAdapters in 16–30 mm to match common retainer sizes\u003c\/li\u003e\n  \u003cli\u003eBest used only with removed cylinder heads for safe access\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat parts are included and how do I use each one safely?\u003c\/h3\u003e\n\n\u003cp\u003eThe set contains a C-clamp jaw, three extension screws, five adapters, a hand lever, straight valve stem seal pliers and two valve lappers with four cup sizes. Center the compressor over the spring before compressing, work slowly to release keepers, and use the straight pliers to grip seals without cutting or deforming them. Use the lappers with a small amount of lapping compound and rotate carefully to avoid excessive material removal.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOne C-clamp jaw — compress springs on removed heads\u003c\/li\u003e\n  \u003cli\u003eThree extension screws — adjust clamp reach and clearance\u003c\/li\u003e\n  \u003cli\u003eFive adapters (16\/19\/23\/25\/30 mm) — fit various retainers\u003c\/li\u003e\n  \u003cli\u003eHand lever — apply controlled compression force\u003c\/li\u003e\n  \u003cli\u003eStraight valve stem seal pliers — remove\/install seals in tight areas\u003c\/li\u003e\n  \u003cli\u003eTwo wooden lappers, four cup sizes — manual valve lapping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The BILITOOLS 13PCS Valve Spring Compressor Tools kit is aimed at DIY mechanics, home garage technicians and small-engine repair pros who need a portable, full-featured kit for cylinder head valve and seal service. It's most useful when the cylinder head is removed and you want a single compact case with adapters, seal pliers and lapping tools to handle multiple valve sizes and recessed layouts without buying individual specialty tools. If you plan to work on installed heads with complex clearance constraints, consider a different compressor designed for in-situ use or consult an experienced technician.\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 compressor with the cylinder head still on the engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This C-clamp compressor is designed for cylinder heads removed from the engine for safe, effective spring access.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include valve lapping compound?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The set includes wooden lappers and cups but does not include lapping compound; purchase that separately.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BILITOOLS","offers":[{"title":"Default Title","offer_id":55168801931607,"sku":"B0DP2231CN","price":77.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/bilitools-front-view-kit-open.jpg?v=1790414253","url":"https:\/\/britishgarage.co.uk\/products\/bilitools-valve-spring-compressor-lapping-kit-13-piece-set-c-clamp-16-30mm-adapters","provider":"British Garage","version":"1.0","type":"link"}