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Checking Camshaft Timing Top Dead Center Indicator

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This is another type of TDC indicator, one with a mechanical stop. It's not as accurate as a dial indicator, but it's effective. Move the piston to TDC; then adjust the stop to touch the piston crown. Gently roll the crank back and forth and feel the TDC 1- to 2-degree dwell. You want the crank dead center in the middle of TDC, which will feel like a loose spot in rotation before the piston moves into the downstroke. Find the middle of the loose spot in crank rotation, which is dwell time and true TDC.
Ford Camshaft Timing - Degreed To Go

 This is another type of TDC indicator, one with a mechanical stop. It's not as accurate as a dial indicator, but it's effective. Move the piston to TDC; then adjust the stop to touch the piston crown. Gently roll the crank back and forth and feel the TDC 1- to 2-degree dwell. You want the crank dead center in the middle of TDC, which will feel like a loose spot in rotation before the piston moves into the downstroke. Find the middle of the loose spot in crank rotation, which is dwell time and true TDC.  View Related Article

 

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