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:

Engine assembly installation
Install the engine in the reverse order of engine removal. Pay attention to the following points: before installing the engine, install the collars (1). Before installing the engine, install the engine mounting thrust adjusters (2). Gradually raise the rear side of ...

Oil jet inspection
Refer to “oil jet removal and installation” . Oil jet Make sure that the oil jets are not clogged. If they are clogged, clean their oil passage using a wire of the proper size and compressed air. Piston cooling jet Oil jet (for transmission) Oil jet (for cam chain te ...

Specifications
Service data Drive train unit: mm (in) except ratio Tightening torque specifications Note the specified tightening torque is described in the following. “Drive chain related components” Reference: for the tightening torque of fastener not specified in this section ...