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Pistons
Kit Piston: SB
(1) 13001-0077
Kit pistons are exclusive the two piston rings for reduce the compression height
(between the center of piston pin hole and the shoulder of the piston) and the
mechanical friction loss.
Kit piston has more reduced the weight compared the original piston.
To adjust the cylinder compression to 14.3, use the kit pistons 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 kit piston pins.
When replacing the kit pistons with the original pistons, inspect the squish (refer to the
Cylinder Compression section).
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