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:

Starting off
Warning Riding this motorcycle at excessive speed increases your chances of losing control of the motorcycle. This may result in an accident. Always ride within the limits of your skills, your motorcycle, and the riding conditions. Warning Remov ...

Starter relay removal and installation
Removal Turn the ignition switch off. Remove the front seat. Refer to “exterior parts removal and installation” in section 9d (page 9d- 6). Disconnect the battery (–) lead wire (1) from the battery. Remove the starter relay cover (2) and disconnect the starter rel ...

Side-stand construction
Frame Side-stand bracket Washer Side-stand 50 N·m (5.0 Kgf-m, 36.0 Lbf-ft) 40 N·m (4.0 Kgf-m, 29.0 Lbf-ft) Apply grease to sliding surface. ...