Q45 V8-4.5L (VK45DE) (2002)
Be sure to ream in circles concentric to the valve guide center.
This will enable valve seat to fit correctly.
3. Heat cylinder head to .....110 to 130°C (230 to 266°F) by soaking in heated oil.
4. Provide valve seats cooled well with dry ice. Force fit valve seat into cylinder head.
CAUTION: Avoid directly to touching cold valve seats.
5. Using valve seat cutter set and valve seat grinder, finish the seat to the specified dimensions.
CAUTION: When using valve seat cutter, firmly grip the cutter handle with both hands. Then, press on the contacting surface all around the
circumference to cut in a single drive. Improper pressure on with the cutter or cutting many different times may result in stage valve seat.
Grind to obtain the dimensions indicated.
STANDARD
D1 dia.: ......................................................................................................................................................................................... 34 mm (1.34 inch)
D2 dia.: .............................................................................................................................................................. 35.6 - 35.8 mm (1.402 - 1.409 inch)
D3 dia.: .............................................................................................................................................................. 40.0 - 40.2 mm (1.575 - 1.583 inch)
D4 dia.: .................................................................................................................................................................................... 28.7 mm (1.130 inch)
D5 dia.: .............................................................................................................................................................. 30.6 - 30.8 mm (1.205 - 1.213 inch)
D6 dia.: .............................................................................................................................................................. 34.8 - 35.0 mm (1.370 - 1.378 inch)
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact.