Do You Need New Piston Rings After Honing? Replacing the piston rings is considered a engine rebuild and you cannot just change them as you must ensure that the cylinder is true, meaning that it is straight from the top of the cylinder to the bottom, and that the cylinder is perfectly round, as well.
How Do You Calculate Piston Ring Gap? For a street engine, multiplying your bore size by 0.004in will give you the top ring gap you are looking for. For high performance engines, the multiplier changes to add more clearance, but the math stays the same: Modified or Nitrous Oxide – 0.005in x 4.00in bore =
What Happens If The Piston Ring Gap Is Too Wide? Piston rings will expand when warm and you will set that end gap to take into account the thermal expansion and aim for best sealing once that engine is warm. … Now, if the gap is too big, the engine will have too much crankcase