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:

Swingarm related parts inspection
Refer to “swingarm removal and installation” (page 2c- 9). Spacers Remove the collar and spacer from the swingarm. Inspect the collars and spacer for wear and damage. If any defects are found, replace them with new ones. Chain buffer Inspect the chain buffer for wear and ...

Tire condition and type
Tire condition and tire type affect motorcycle performance. Cuts or cracks in the tires can lead to tire failure and loss of motorcycle control. Worn tires are susceptible to puncture failures and subsequent loss of motorcycle control. Tire wear also affects the tire profile, changing moto ...

Fuel pump disassembly and assembly
Disassembly Remove the fuel tank. Refer to “fuel tank removal and installation” . Remove the fuel pump assembly (1) by removing its mounting bolts diagonally. Spilled gasoline should be wipe off immediately. Keep away from fire or spark. Work in a wel ...