Top Dead Center Indicator - S & G Tool Aid

The S & G Tool Aid 33650 Top Dead Center Indicator is an indispensable tool for professional automotive and industrial technicians, engineered to precisely locate Top Dead Center (TDC) on gasoline engines. This robust indicator provides a reliable mechanical stop for the piston and offers clear audible feedback, ensuring absolute accuracy for critical engine timing, assembly, and diagnostic procedures. It is designed for use on a wide range of gasoline engines, but specifically not for diesel engines.

Key Features

• Audible TDC Confirmation: Features a whistling function that signals the piston's approach to TDC on the compression stroke, ceasing exactly when TDC is reached for accurate ignition and valve timing.
• Universal Spark Plug Port Compatibility: Equipped with a 2-in-1 threaded design, this indicator securely installs into all 14mm and 18mm spark plug ports.
• Durable Steel Construction: Constructed from robust steel, the tool is built to withstand the demands of professional shop environments and engine rebuilds, ensuring long-lasting reliability.
• Positive Piston Stop & Tactile Feedback: Offers a positive mechanical stop and an extended body design for technicians to easily feel and confirm exact piston contact while manually rotating the crankshaft.
• Optimal Length for Deep Access: With an overall length of 27 inches, it provides ample reach for deep spark plug hole applications.

Applications

The S & G Tool Aid 33650 Top Dead Center Indicator is an essential tool for professional technicians to:

• Precisely establish true TDC when degreeing camshafts or verifying cam timing.
• Accurately confirm factory timing marks on harmonic balancers and timing covers, aiding in diagnosing jumped timing belts and chains.
• Set up ignition timing for distributor-based or crank-trigger ignition systems.
• Assist with detailed valve adjustments and clearance checks during engine assembly or repair.

Specifications

• Manufacturer: S & G Tool Aid
• Model Number: 33650
• Weight: 0.35 lb
• Dimensions: 9.6 x 9.5 x 1.25 in
• Overall Length: 27 in.
• Spark Plug Port Compatibility: 14mm and 18mm