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:

Steering tension adjustment
Check the steering movement in the following procedures: by supporting the motorcycle with a jack, lift the front wheel unit is off the floor 20 – 30 mm (0.8 – 1.2 In). Remove the steering damper. Refer to “steering damper construction” . Check to make sure that the cabl ...

DTC “c23” (p1651-h/l): to sensor circuit malfunction
Detected condition and possible cause Detected condition Possible cause C23 The sensor voltage should be the following for 2 sec. And more, after ignition switch is turned on. 0.2 V ≤ Sensor voltage < 4.8 V To sensor circuit open or shor ...

Front fork parts inspection
Refer to “front fork disassembly and assembly” . Inner and outer tubes Inspect the inner tube and outer tube for scratches Slide bushing / guide bushing Inspect the slide bushing and guide bushing for wear or damage. If they are worn or damaged, replace them with new ones. If they are not ...