13
Piston
1.Kit Piston (13001-0061): SB Method
Kit piston are exclusive the two piston ring for reduce the compression height (dimension
between the center of piston pin hole to shoulder of the piston) and the mechanical
friction loss.
Kit piston has more reduced the weight compared the original piston.
Establish the cylinder compression in 14.3 to use the this piston and grind off the cylinder
head under surface to 0.4 mm
○ Always use the higher octane rating gasoline for prevent the knocking.
Use the kit piston rings and the kit pistons.
Change the kit pistons from the original pistons inspect the squish (refer to the Cylinder
Compression section).
Use the kit pistons (13001-0061) following below.
○ Use the kit connecting rod assemblies (13251-0015)
○ Use the kit piston rings (13008-0019).
○ Use the kit piston pins and snap rings.
○ There are the machining edge for the valve relief portions of the piston heads. Must be
hand finished for smooth corners. (Round the corner to R1)
Crankshaft Main Journal Bushings
Crankshaft Main Journal Bushings: Use original bushings.
