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Valve lash is adjusted by taking the crankshaft in 90-degree increments with the engine's firing order. McAfee has marked the balancer at TDC/Zero, 90, 180, and 270 degrees. Although cam manufacturers tend to specify valve lash hot, you've got to start somewhere cold. Marvin allows for 0.004-inch growth from engine heat. He sets the intake/exhaust lash at TDC compression stroke for each bore. Intake lash is 0.024-inch cold or 0.028-inch hot. Exhaust is 0.026-inch cold and 0.030-inch hot. A feeler gauge should present some resistance to movement, but not too tight. After the engine is run in, precise hot valve lash is checked before cool down. View Related Article
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