Nissan 12033-2Y901 Ring Set-Piston

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Excess end gap isn't as critical as too little gap, unless the gap is greater than 0.040-inch. Compare your measurements to the chapter's Specifications for maximum end gap. If you do file the ring gaps, mount a file in a vise, lubricate the tops of the jaws, and slide the ring back and forth across the file, ensuring even pressure on both sides. File a little, then recheck the ring's end gap before filing more. Use a whetstone or fine file to deburr the edges once the correct gap is achieved.