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:

Throttle body construction
Intake pipe Evap system purge control solenoid valve (e-33 only) Evap canister (e-33 only) Iat sensor Isc valve hose Ho2 sensor Face the clamp end left side. Yellow marking should face upward. Face the end of clamps upward and ke ...

Oil pump inspection
Inspect the oil pump in the following procedures: remove the oil pump. Refer to “oil pump removal and installation” . Rotate the oil pump by hand and check that it moves smoothly. If it does not move smoothly, replace the oil pump assembly. Caution do not attempt t ...

DTC “c13” (p0105-h/l): iap sensor circuit malfunction
Detected condition and possible cause Detected condition Possible cause C13 Iap sensor voltage is not within the following range. 0.5 V ≤ Sensor voltage < 4.85 V Note note that atmospheric pressure varies depending on weather c ...