{"product_id":"granatan-tdc-whistle-tool-top-dead-center-compression-indicator-27-hose-dual-threaded-14-18mm","title":"Granatan TDC Whistle Tool — Top Dead Center Compression Indicator 27\" Hose, Dual-Threaded 14\/18mm","description":"\u003cp\u003e\u003cstrong\u003eGranatan Top Dead Center Whistle Tool 8016MRG is a hand-installable TDC compression indicator that uses a whistle sound to identify the piston’s compression stroke so you can set timing and perform valve or distributor work without removing the head.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact, workshop-ready top dead center tool pairs a flexible 27\" rubber hose with a metal dual-threaded fitting to fit common spark plug ports. Designed for gasoline engines, the whistle eliminates the need to peer into a cylinder by audibly signaling peak compression. It’s lightweight, durable, and built to hold up to routine garage or roadside servicing—ideal for mechanics and DIYers needing a fast, reliable way to locate TDC during timing, valve adjustment, or leak-down procedures.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Granatan whistle tell me when the piston is at top dead center?\u003c\/h3\u003e\n\u003cp\u003eThe whistle converts compression pulses into a clear audible tone when the piston reaches the compression stroke near top dead center. As you crank the engine, air forced through the hose produces a whistle that peaks at the moment of highest compression, giving an unmistakable cue without visual inspection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAudible peak indicates compression stroke and approximate TDC.\u003c\/li\u003e\n  \u003cli\u003e27\" flexible hose lets you stand clear of moving parts while listening.\u003c\/li\u003e\n  \u003cli\u003eSimple hand-threaded installation into spark plug holes makes use quick.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my engine and how do I install it?\u003c\/h3\u003e\n\u003cp\u003eThe dual-threaded metal fitting is made to engage both 14 mm and 18 mm spark plug ports, covering a wide range of cars, trucks, motorcycles and small gasoline engines. Installation is tool-free: thread the fitting into the spark plug hole by hand, route the hose to a safe listening position, and crank the engine slowly until the whistle peaks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-threaded metal fitting fits 14 mm and 18 mm spark plug threads.\u003c\/li\u003e\n  \u003cli\u003eNot compatible with diesel engines—designed for gasoline spark-ignited engines only.\u003c\/li\u003e\n  \u003cli\u003eHand-tighten for a gas-tight seal; no adapters required in most applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance and workshop tasks does this tool support?\u003c\/h3\u003e\n\u003cp\u003eUse the Granatan TDC whistle during distributor alignment, ignition timing, valve lash adjustments, timing belt or chain checks, and preliminary cylinder leak-down diagnostics. The audible indication reduces the need to remove the spark plug or visually inspect the piston position, speeding routine procedures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDistributor installation and static timing setup.\u003c\/li\u003e\n  \u003cli\u003eValve clearance checks and setting at TDC on the compression stroke.\u003c\/li\u003e\n  \u003cli\u003eTiming belt or chain verification and basic leak-down assistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and safe is the 8016MRG for shop use?\u003c\/h3\u003e\n\u003cp\u003eThe tool combines a metal fitting with a resilient 27\" rubber hose to resist bending, oil exposure, and normal workshop wear. Its flexible hose reduces strain on the fitting and allows comfortable positioning in tight engine bays, while hand installation keeps you away from hot or moving components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal dual-threaded fitting for repeated use and reliable sealing.\u003c\/li\u003e\n  \u003cli\u003eLong, flexible rubber hose for positioning and operator safety.\u003c\/li\u003e\n  \u003cli\u003eCompact design stores easily in a tool roll or toolbox.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Granatan Top Dead Center Whistle Tool 8016MRG is aimed at home mechanics, professional technicians, and motorcyclists who work on gasoline engines and want a quick, audible method to find compression stroke TDC. It’s especially helpful when you need a fast setup for distributor timing, valve adjustments, or pre-leak-down checks, and for anyone who prefers hand-installable, low-cost diagnostic aids that don’t require special tools.\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: Is the Granatan TDC whistle tool compatible with diesel engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The 8016MRG is made for gasoline engines with spark plugs and will not function correctly on diesel engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to install the whistle tool?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The tool threads in by hand to 14 mm or 18 mm spark plug ports and requires no additional tools for basic use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Granatan","offers":[{"title":"Default Title","offer_id":48085137129630,"sku":"B0FWCTHZZM","price":34.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/granatan-tdc-whistle-front-view.jpg?v=1785867791","url":"https:\/\/northtrailauto.ca\/products\/granatan-tdc-whistle-tool-top-dead-center-compression-indicator-27-hose-dual-threaded-14-18mm","provider":"North Trail Auto","version":"1.0","type":"link"}