What is the piston ring end gap on 2 stroke motors?

my educated guess is that it should be more than the 4 stroke. maybe .005-6/inch. reasoning being that the 2 stroke piston and ring probably runs hotter. it is firing twice as often - and lubrication oil doesn't splash and cause much heat to be carried away. going with a little more gap is safer. as temps go up the ring expands from heat and closes up the gap. if it goes solid it will scuff out the ring and cylinder. You might try to find and old Yamaha or Suzuki 2 stroke manual for similar size engine and see what they spec.