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:

Stv actuator removal and installation
Refer to “throttle body disassembly and assembly” in section 1d . Caution never remove the stva from the throttle body. Isc valve inspection Refer to “dtc “c40” (p0505 / p0506 / p0507): isc valve circuit malfunction” in section 1a . Isc valve removal and installation Refer t ...

Air cleaner element inspection
Inspect air cleaner element every 6 000 km (4 000 miles, 12 months) Inspection Remove the air cleaner element. Refer to “air cleaner element removal and installation” in section 1d . Inspect the air cleaner element for clogging. If it is clogged with dirt, replace it with a new on ...

Cam chain tensioner inspection
Inspect the cam chain tensioner in the following procedures: remove the cam chain tensioner. Refer to “cam chain guide / cam chain tensioner removal and installation” . Check the contacting surface of the cam chain tensioner. If it is worn or damaged, replace it with a new ...