956, 957, 958 Valve Grind

3/8" Diameter x 3" Length.  Fine Thread (24tpi). 

OEM Interchange Number: Sioux 1715

80 Grit Valve Grinder Stone for Grinding Extremely hard Titanium and Diesel Valves. 

7" Diameter,  Straight style, 11/16" overall thickness with 1 3/4" Hole Diameter With 15 degree Face Angle 

Fits Sioux Model 680, 956, 2001, & 2075 Valve Grinders

OEM Part Number:

54 Grit Stem Grinder Stone. 

4" Diameter,  Straight Cup style, 1" overall thickness with 5/8" Hole Diameter 

Fits All Sioux / Thor Model Valve Grinders Except 682 and 685L, KO Lee Model K500 and K403C
OEM Part Numbers: 75571VR2M89, 73533, RV4GQKMB

60 Grit General Purpose Valve Grinder Stone. 

4" Diameter,  Straight Cup style, 1" overall thickness with 5/8" Hole Diameter 

Fits All Sioux Model Valve Grinders EXCEPT 682 & 685L

OEM Part Number: 81

Ruby Valve Grinder Stone. 

4" Diameter,  Straight Cup style, 1" overall thickness with 5/8" Hole Diameter 

Fits All Sioux Model Valve Grinders EXCEPT 682 & 685L

OEM Part Number: 81

70 Grit General Purpose Valve Grinder Stone. 

7" Diameter,  Straight style, 11/16" overall thickness with 1 3/4" Hole Diameter With 15 degree Face Angle 

Fits Sioux Model 680, 956, 2001, & 2075 Valve Grinders

OEM Part Number: 176

80 Grit General Purpose Valve Grinder Stone. 
Premium Quality Valve Grinder Stone / Brown 
7" Diameter,  Straight style, 11/16" overall thickness with 1 3/4" Hole Diameter With 15 degree Face Angle 

Fits Sioux Model 680, 956, 2001, & 2075 Valve Grinders

80 Grit Valve Grinder Stone for Stelite Valves. 

7" Diameter,  Straight style, 11/16" overall thickness with 1 3/4" Hole Diameter With 15 degree Face Angle 

Fits Sioux Model 680, 956, 2001, & 2075 Valve Grinders

OEM Part Number: 177

100 Grit General Purpose Valve Grinder Stone. 

7" Diameter,  Straight style, 11/16" overall thickness with 1 3/4" Hole Diameter With 15 degree Face Angle 

Fits Sioux Model 680, 956, 2001, & 2075 Valve Grinders

OEM Part Number: 176

1 Gallon
GRINDING OIL FOR VALVE REFACERS Specially formulated grinding oil for use in all valve refacing machines. Extends wheel life while allowing for a better surface finish and cooling of the work piece. Inhibits rust, eliminates foaming and rancidity.

Instruction and Parts Manaul for the Sioux Model 956, 957, and 958 Valve Grinders
23 Pages

LH Thread 3/8" 16TPI Valve Facing Stone Retention Screw.
Fit Sioux Model 624, 645, 6024, 680, 956, 957, 958, 2001, 2075 Valve Grinders.