0.31
3.1% or 31/1000.
31/1000 = 0.031
288 000, 001, 002, 003, 004, 005, 006, 010, 011, 012, 013, 014, 015, 016, 020, 021, 022, 023, 024, 025, 026, 030, 031, 032, 033, 034, 035, 036, 040, 041, 042, 043, 044, 045, 046, 050, 051, 052, 053, 054, 055, 056, 060, 061, 062, 063, 064, 065, 066 x 6 Unless you mean all numbers in the string must be unique, excluding numbers like 000 and 001, then it's 180 or 012, 013, 014, 015, 016, 021, 023, 024, 025, 026, 031, 032, 034, 035, 036, 041, 042, 043, 045, 046, 051, 052, 053, 054, 056, 061, 062, 063, 064, 065 x 6
The term .031 may indicate the carat weight of the stone. Without a context it is uncertain, however.
This info comes from the VW Fox Bentley Manual. Manufacturer/Type/Electrode gap Beru plugs - RS35 - .031 in - .035 in Bosch plugs - WR7DS - .024 - .028 in Champion plugs - N8GY - .024 in - .028 in Torque no more than 15ft lb.
750 DOHC motors use .024" to .028" (0.6 - 0.7 mm) through 1984. My son had put "out of the box" NGKs in it that I found to be gapped at .031", and bike was running fine.
No, .031 is not legally intoxicated.
The owners manual says .031, which is right for factory stock plugs. Using Autolite double platinums it's .044. Any less than .040 and your engine will misfire and set the malfunction light.
Not at all.
The allowable deviation of diameter (schedule 20 and greater) at any point from nominal diameter is: Under 2": +.015/-.031 2"-12": +/-1%
3.1% or 31/1000.
31/1000 = 0.031
.031
30,031 is composite.
.031
gap is .017