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SPEC
ENGINE SPECIFICATIONS
Valve springs
Free length
Intake 39.7 mm 37.7 mm
Exhaust 39.7 mm 37.7 mm
Installed length (valve closed)
Intake 33 mm ----
Exhaust 33 mm ----
Compressed spring force (installed)
Intake 136 ~ 158 N (13.9 ~ 16.1 kgf) ----
Exhaust 136 ~ 158 N (13.9 ~ 16.1 kgf) ----
Spring tilt
Intake ---- 2.5° /1.7 mm
Exhaust ---- 2.5° /1.7 mm
Winding direction (top view)
Intake Clockwise ----
Exhaust Clockwise ----
Item Standard Limit