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:

Rear suspension assembly construction
Rear shock absorber mounting bolt (upper) Rear shock absorber mounting nut (lower) Cushion rod mounting nut (front) Cushion rod mounting nut (rear) Cushion lever mounting nut Swingarm pivot nut Swingarm pivot boss nut Swingarm pivot shaft Swingarm ...

Rear suspension inspection
Inspect rear suspension every 12 000 km (7 500 miles, 24 months) Inspect the rear shock absorber for oil leakage and check that there is no play in the swingarm. Replace any defective parts, if necessary. Refer to “rear shock absorber removal and installation” in section 2c , “cushion lever ...

Front wheel related parts inspection
Refer to “front wheel assembly removal and installation” . Tire Refer to “tire inspection” in section 0b . Front brake disc Refer to “front brake disc inspection” in section 4b . Dust seal Inspect the lip of dust seals for wear or damage. If any defects are found, replace the dust seal ...