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:

Engine sprocket removal and installation
Removal Remove the gearshift link arm (1) from the gearshift shaft. Note mark the gearshift shaft head at which the gearshift link arm slit set for correct reinstallation. Remove the speed sensor (2). Remove the engine sprocket cover (3). Support the ...

Radiator inspection and cleaning
Radiator hose inspection Refer to “cooling system inspection” in section 0b . Radiator inspection Inspect the radiator for water leaks. If any defects are found, replace the radiator with a new one. If the fins are bent or dented, repair them by carefully straightening them with the blade of ...

Rear brake caliper parts inspection
Refer to “rear brake caliper disassembly and assembly” . Brake caliper cylinder Inspect the brake caliper cylinder wall for nicks, scratches or other damage. If any damage is found, replace the caliper with a new one. Brake caliper piston Inspect the brake caliper piston surface for any s ...