Hyundai Tiburon (2003 year). Manual — part 27

3. Using the special tool (09221-3F100 A/B) press-fit the valve guide. The valve guide must be press-fitted from

the upper side of the cylinder head. Keep in mind that the intake and exhaust valve guidesare different in
length.

4. After the valve guide is press-fitted, insert a new valve and check for proper clearance.

5. After the valve guide is replaced, check that the valve is fully seated. Recondition the valve seats as

necessary.

Do not install a valve guide unless it is oversize.

Replacing Valve Seat Ring

1. Cut away the inner face of the valve seat to reduce the wall thickness.

2. Enlarge the diameter of the valve seat so that it matches the specified hole diameter of the new valve seat

ring.

Valve Seat Ring Oversizes

Description

Size mm (in.)

Size

mark

Seat ring height H mm

(in.)

Oversize hole diameter

I.D. mm(in.)

Intake valve

Seat ring

0.3 (0.012) O.S.

30

7.9 ~ 8.1 (0.311 ~ 0.319)

33.300 ~ 33.325

(1.311 ~ 1.312)

Exhaust valve

Seat ring

0.3 (0.012) O.S.

30

7.9 ~ 8.1 (0.311 ~ 0.319)

28.600 ~ 28.625

(1.126 ~ 1.127)

3. Heat the cylinder head to about 250°C (480°F) and press-fit an oversize seat ring for the bore in the cylinder

head.

4. Using lapping compound, lap the valve to the new seat.

Valve seat contact width
Intake : 1.1 ~ 1.5mm (0.043 ~ 0.059in.)
Exhaust : 1.3 ~ 1.7mm(0.051 ~ 0.067 in.)

REASSEMBLY

1. Install the spring seats.

2. Using special tool (09222-22001), lightly tap the seal in position.

• Do not reuse old valve stem seals.

• Incorrect installation of the seal could result in oil leakage of from the valve guides.

3. Apply engine oil to each valve. Insert the valve into their guides. Avoid pushing the valve into the seal by

force. After installing the valve,check that it moves smoothly.

4. Place valve springs so that the side coated with enamel faces toward the valve spring retainer.

5. Using the special tool (09222-28000, 09222-28100), compress the spring and install the retainer locks. After

installing the valves, ensure that the retainer locks are correctly in place before releasing the valvespring
compressor.

When the spring is compressed, check that the valve stem seal is not pressed against the bottom of the
retainer.

6. Clean both gasket surfaces of the cylinder head and cylinder block.

7. Verify the identification marks on the cylinder head gasket.

8. Install the gasket so that the surface with the identification mark faces toward the cylinder head.

Do not apply sealant to these surfaces.

9. Tighten the cylinder head bolts in the sequence shown in the illustration with a torque wrench.

10. Tighten the cylinder head bolts using the torque-angle method. Starting at top center, tighten all cylinder

head bolts in sequence as shown in the illustration, using the 12 mm socket.

Tightening procedure
Cylinder head bolt :
25Nm (250kg.cm, 18.1lb.ft) + (58°~62°) + (43°~47°)