Golf club heads with turbulators and methods to manufacture golf club heads with turbulators

A golf club head comprising:

• a face, a rear opposite to the face, a heel, a toe opposite to the heel, a crown having a crown surface extending between the face, the rear, the heel and the toe, and a sole opposite to the crown and having a sole surface extending between the face, the rear, the heel and the toe;
• a first plurality of sole turbulators defined by grooves disposed in a portion of the sole surface between the heel and a centerline extending from a center of the face to the rear, at least one sole turbulator of the first plurality of sole turbulators extending from near the heel in a direction generally toward the toe;
• and
• a second plurality of sole turbulators defined by grooves disposed in a portion of the sole surface between the toe and the centerline on the sole surface, at least one sole turbulator of the second plurality of sole turbulators extending from near the face or the toe in a direction generally toward the rear;
• wherein a width of at least one sole turbulator of the first plurality of sole turbulators or the second plurality of sole turbulators varies along a length of the at least one sole turbulator.

A method for providing turbulators on a club head comprising:

• providing a club head comprising a face, a rear opposite to the face, a heel, a toe opposite to the heel, a crown having a crown surface extending between the face, the rear, the heel and the toe, and a sole opposite to the crown and having a sole surface extending between the face, the rear, the heel and the toe, wherein a highest point on the surface of the crown defines an apex;
• forming a plurality of crown turbulators projecting from the surface of the crown, each adjacent pair of crown turbulators being separate and spaced apart to define a space between the adjacent pair of crown turbulators, and each crown turbulator extending between the heel and the toe to define a width and extending between the face and the rear to define a length;
• wherein the length is substantially greater than the width;
• wherein at least a portion of at least one crown turbulator is located between the face and the apex;
• and
• wherein each space between an adjacent pair of crown turbulators is substantially greater than the width of each of the adjacent pair of crown turbulators that define the space.