Wiki User
∙ 14y ago.052 inch ( 52 /1000's ) 1.3 to 1.4 mm is .052 to .056 inch
Wiki User
∙ 14y agoif you didn't space your spark plug right will they spark
.40 thousands and if its a champion OE spark plug its .50 thousands
The correct spark plug gap is 40 thousands on a stock harley plug
35 thousands, of an inch, if its a short base plug , 60 thousands, if its a long base plug,
35 thousands
32 thousands
The Right Spark Plug in the Right Place - 1945 was released on: USA: 12 February 1945
45 to 60 thousands,
40 thousands
35 thousands of an inch.
40 thousands
25 thousands of an inch