Suzuki GSX-R 1000 Service Manual: Valve seat repair

Suzuki GSX-R 1000 Service Manual / Engine / Engine mechanical / Repair instructions / Valve seat repair

The valve seats (1) for both the intake and exhaust valves are machined to three different angles. The seat contact surface is cut at 45°.

Suzuki GSX-R. Valve seat repair

Intake valve
Exhaust valve

Suzuki GSX-R. Valve seat repair

Caution

the valve seat contact area must be inspected after each cut.
Do not use lapping compound after the final cut is made. The finished valve seat should have a velvety smooth finish but not a highly polished or shiny finish. This will provide a soft surface for the final seating of the valve which will occur during the first few seconds of engine operation.
The titanium valves are coated with an oxidized membrane treatment to resist wear but the membrane tend to removed if lapped after valve seat servicing.

Note

after servicing the valve seats, be sure to check the valve clearance after the cylinder head has been reinstalled. Refer to “valve clearance inspection and adjustment” in section 0b .

Valve guide replacement

Remove the cylinder head. Refer to “engine top side disassembly” . Remove the valves. Refer to “cylinder head disassembly and assembly” . Using the valve guide remover, drive the va ...

Engine bottom side disassembly

Note the crankcase must be separated to service the crankshaft and conrod. Remove the engine assembly from the frame. Refer to “engine assembly removal” . Remove the e ...

Other materials:

Clutch lever position switch inspection
Inspect the clutch lever position switch in the following procedures: disconnect the clutch lever position switch lead wires (1). Inspect the clutch lever position switch for continuity with the tester. If any abnormality is found, replace the switch with a new one. S ...

Injection timing description
Injection time (injection volume) The factors to determine the injection time include the basic fuel injection time, which is calculated on the basis of the intake air pressure, engine speed and throttle opening angle, and various compensations. These compensations are determined according to ...

Exhaust control system construction
Excv cable no. 1 (Cl) Excv cable no. 2 (Op) When loosening or tightening the pulley bolt, be sure to fix the pulley with an adjustable wrench, or excva may get damaged. 5 N·m (0.5 Kgf-m, 3.5 Lbf-ft) 42 – 43 Mm (1.65 – 1.69 In) 60 – 61 Mm (2.36 – ...