{"product_id":"katech-whistler-compression-ratio-tester","title":"Katech WHISTLER Compression Ratio Tester","description":"\u003ch2\u003eKatech WHISTLER™ Compression Ratio Tester\u003c\/h2\u003e \u003cp\u003e\u003cstrong\u003e\u003cem\u003eFast, Accurate Compression Ratio Measurement Without Removing the Cylinder Head\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThe \u003cstrong\u003eKatech WHISTLER™ Compression Ratio Tester\u003c\/strong\u003e is an electronic measurement tool designed to determine the compression ratio of virtually any engine without removing the cylinder head. Designed for professional engine builders, race teams, technical inspectors, sanctioning bodies and performance shops, the WHISTLER™ provides fast compression ratio measurement across a wide range of engine configurations.\u003c\/p\u003e \u003cp\u003eTo perform a measurement, remove a spark plug and install the appropriate WHISTLER™ adapter. Enter the number of cylinders, engine displacement and engine temperature, then follow the supplied operating procedure to measure and display the engine's compression ratio to the nearest hundredth. The WHISTLER™ is accurate to ±0.05 compression ratio.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eMeasures Engine Compression Ratio Without Removing the Cylinder Head\u003c\/li\u003e \u003cli\u003eAccurate to ±0.05 Compression Ratio\u003c\/li\u003e \u003cli\u003eDisplays Compression Ratio to the Nearest Hundredth\u003c\/li\u003e \u003cli\u003eNo Limitation on the Number of Cylinders\u003c\/li\u003e \u003cli\u003eNo Restriction on Engine Displacement\u003c\/li\u003e \u003cli\u003eOnboard Barometric Pressure Sensor\u003c\/li\u003e \u003cli\u003eBuilt-In Verification Bottle for Checking Unit Accuracy\u003c\/li\u003e \u003cli\u003eMultiple Spark Plug Adapters Included\u003c\/li\u003e \u003cli\u003eDesigned for Engine Building, Performance Testing and Motorsports Technical Inspection\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe WHISTLER™ Compression Ratio Tester is \u003cstrong\u003eProudly Engineered and Manufactured by Katech Engineering in Clinton Township, Michigan, USA.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cimg src=\"..\/files\/images\/katech-made-in-america.png\" alt=\"Proudly Made in America\" width=\"300\"\u003e\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±0.05 Compression Ratio\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay Resolution:\u003c\/strong\u003e Nearest Hundredth\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCalibrated Chamber Volume Range:\u003c\/strong\u003e 40cc to 120cc\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEngine Temperature Range:\u003c\/strong\u003e 30°F to 200°F\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCylinder Limitation:\u003c\/strong\u003e None\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEngine Displacement Limitation:\u003c\/strong\u003e None\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAtmospheric Compensation:\u003c\/strong\u003e Onboard Barometric Pressure Sensor\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e 120V AC Supply\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAir Requirement:\u003c\/strong\u003e Low-Volume Compressed Air Source\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRecommended Minimum Air Tank Volume:\u003c\/strong\u003e 10 Gallons\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e\u003chr\u003e\u003chr\u003e \u003ch3\u003eProven in Motorsports Technical Inspection\u003c\/h3\u003e \u003cp\u003eThe Katech WHISTLER™ has an established history as a compression ratio verification tool in professional and organized motorsports, where accurate and repeatable engine inspection is critical.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eNASCAR:\u003c\/strong\u003e Multiple Katech WHISTLER™ Compression Ratio Testers are used for engine compression ratio verification and technical inspection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSports Car Club of America (SCCA):\u003c\/strong\u003e Published official procedures specifically for using the WHISTLER™ Compression Ratio Tester to determine engine compression ratio.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmerican Power Boat Association (APBA):\u003c\/strong\u003e Inboard inspection rules specifically identify the Katech WHISTLER™ Compression Ratio Tester as a method that may be used to determine an engine's compression ratio.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSAC:\u003c\/strong\u003e A Katech WHISTLER™ Compression Ratio Tester customer representing organized motorsports and technical inspection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eARCA West:\u003c\/strong\u003e A Katech WHISTLER™ Compression Ratio Tester customer within stock car racing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHendrick Motorsports:\u003c\/strong\u003e A Katech WHISTLER™ Compression Ratio Tester customer within professional race engine development.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eJefferson Speedway, Wisconsin:\u003c\/strong\u003e A Katech WHISTLER™ Compression Ratio Tester customer within local short-track racing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBarrie Speedway, Canada:\u003c\/strong\u003e A Katech WHISTLER™ Compression Ratio Tester customer within Canadian short-track racing.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eAdditional customers across automotive engineering, research, racing components and marine performance include Bentley Motors Ltd., FEV, Ferrea Racing Components, Oak Ridge National Laboratory, GM R\u0026amp;D, Teague Custom Marine and Mercury Marine.\u003c\/p\u003e \u003cp\u003eFrom professional racing to sanctioning-body technical inspection, the WHISTLER™ provides a non-invasive method of verifying engine compression ratio without removing the cylinder head.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eWhat's Included\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eKatech WHISTLER™ Compression Ratio Tester\u003c\/li\u003e \u003cli\u003eFN Spark Plug Adapter\u003c\/li\u003e \u003cli\u003eBN Spark Plug Adapter\u003c\/li\u003e \u003cli\u003eBL Spark Plug Adapter\u003c\/li\u003e \u003cli\u003eJ Spark Plug Adapter\u003c\/li\u003e \u003cli\u003e18mm Spark Plug Adapter\u003c\/li\u003e \u003cli\u003eBuilt-In Verification Bottle\u003c\/li\u003e \u003cli\u003eInstruction Sheet\u003c\/li\u003e \u003cli\u003ePelican Hard Case\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e 12mm motorcycle spark plug adapter is available separately.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCalibration \u0026amp; Repair Service\u003c\/h3\u003e \u003cp\u003eFor WHISTLER™ calibration or repair service, please call .\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eWhy Choose the Katech WHISTLER™?\u003c\/h3\u003e \u003cp\u003eThe WHISTLER™ combines broad engine compatibility, precise compression ratio measurement and built-in verification capability in a specialized tool developed for professional engine measurement and motorsports technical inspection. As the exclusive manufacturer of the WHISTLER™, Katech continues to provide the equipment, replacement components, calibration and repair support needed to keep these specialized tools in service.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cimg src=\"..\/files\/prop-65-warning.jpg\" alt=\"California Proposition 65 Warning\" width=\"175\"\u003e\u003c\/p\u003e","brand":"Katech","offers":[{"title":"Default Title","offer_id":47875048636572,"sku":"KAT-A0250-G","price":2939.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0473\/3206\/5436\/files\/M198643572.png?v=1791736641","url":"https:\/\/daroracing.com\/products\/katech-whistler-compression-ratio-tester","provider":"Daro Racing","version":"1.0","type":"link"}