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:

Headlight removal and installation
Removal Remove the body cowling assembly. Refer to “exterior parts removal and installation” in section 9d . Remove the air intake pipes (1). Refer to “exterior parts removal and installation” in section 9d . Remove the wiring harness no. 2 (2) By disconnecting the couplers and ...

Ignition switch inspection
Inspect the ignition switch in the following procedures: remove the air cleaner box. Refer to “air cleaner box removal and installation” in section 1d . Disconnect the ignition switch lead wire coupler (1). Inspect the ignition switch for continuity with a tester. If ...

Front wheel removal
Place the motorcycle on the side stand. Remove both brake calipers from the front forks by removing two mounting bolts 1 on each calipers. Note: never squeeze the front brake lever with the caliper removed. It is very difficult to force the pads back into the caliper asse ...