Suzuki GSX R 1000 Page 53
ENGINE
DESIGN
Engine Design
4-12
(2) Valve and Valve Spring
The intake valve diameter is 29mm, exhaust valve diameter is 24mm.
Intake and exhaust valve stem diameter is 4.0mm.
Lightweight valves, single valve springs and aluminum valve retainers contribute to reduced
inertia force and mechanical losses.
Narrow valve stems help reduce the weight and intake air resistance and exhaust air resistance,
contributing to more efficient combustion.
The single valve springs are made of new-alloy spring steel.
Valve and Related Component Specification Chart
2003 GSX-R1000
A) Intake Stem Diameter
4.0mm
B) Exhaust Stem Diameter
4.0mm
C) Intake Valve Diameter
29mm
D) Exhaust Valve Diameter
24mm
E) Intake Bucket Diameter
26mm
F) Exhaust Bucket Diameter
24mm
Valve Spring Material
New Alloy Spring Steel
Valve Spring Type
Single Spring
Retainer Material
Aluminum
2003 GSX-R1000 Valve System
EX
IN
