Valve Guides

Replacement

7. Slip a 6 mm steel washer and the correct driver attachment over the end of the driver. (The washer will absorb some of the impact and extend the life of the driver).

8. Install the new guide(s) from the camshaft side of the cylinder head; drive each one in until the attachment bottoms on the head. If you have all sixteen guides (except D15B8) or eight guides (D 15138) to do, you may have to reheat the head one or two more times.

NOTE: Valve guide replacement can be performed with this special tool.
Valve Guide Installed Height: D16Z6, D15Z1 engine:
Intake: 17.85-18.35 mm (0.703-0.722 in) Exhaust:18.65-19.15 mm (0.734-0.754 in)
D15B7, D15B8 engine:
Intake: 15.95-16.45 mm (0.628-0.648 in) Exhaust: 15.95-16.45 mm (0.628-0.648 in)

Valve Guide Reaming

NOTE: For new valve guides only.

1 . Coat both the reamer and valve guide with cutting oil.

2. Rotate the reamer clockwise the full length of the valve guide bore.

3. Continue to rotate the reamer clockwise while removing it from the bore.
4. Thoroughly wash the guide in detergent and water to remove any cutting residue.
5. Check the clearance with a valve (page 6-45).
- Verify that the valve slides in the valve guide without exerting pressure.