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:

Side stand
An interlock switch is provided to cut off the ignition circuit when the side stand is down and the transmission is in any gear other than neutral. The side stand/ignition interlock switch works as follows: if the side stand is down and the transmission is in gear, the engine ...

Self-diagnostic procedures
Use of mode select switch Note do not disconnect the coupler from ecm, battery cable from battery, ecm ground wire from engine or main fuse before confirming dtc (diagnostic trouble code) stored in memory. Such disconnection may erase memorized information in ec ...

Turn signal light
To replace the turn signal light bulb, follow these directions. Remove screw and take off the lens. Turn the socket counterclockwise and remove it. Push in the bulb and turn it counterclockwise. Caution Overtightening the screws may cause the le ...