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:

Oil pressure switch inspection
Inspect the oil pressure switch in the following procedures: Note before inspecting the oil pressure switch, check if the engine oil level is correct. Refer to “engine oil and filter replacement” in section 0b . Remove the left side cowling. Refer to “exterior parts removal ...

Specifications
Service data Suspension unit: mm (in) Tightening torque specifications Note the specified tightening torque is described in the following. “Rear suspension components” “rear suspension assembly construction” Reference: for the tightening torque of fastener ...

Engine oil level check
Check the engine oil level as follows: Place the motorcycle on level ground on the side stand. Start the engine and allow it to idle for a few minutes. Stop the engine and wait three minutes. Hold the motorcycle vertically and check the oil level through ...