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Proper procedure to install cylinder heads on engines for the Ford Explorer?
What’s the proper procedure to install cylinder heads on engines
for the Ford Explorer?
The AERA Technical Committee says various publications have provided incorrect torque specifications for installing cylinder heads on 1997-2003 Ford 4.0L VIN E and K engines.
The 12 mm cylinder head bolt fasteners require replacement after each use for this application. Using the following torque sequence and in Figures 1 and 2 (below), tighten the front two 8mm bolts after completing the torque procedures for the eight 12mm bolts.
1. Torque all 12mm bolts in sequence to 26 ft.lbs. (35 Nm).
2. Rotate all 12mm bolts in sequence an additional 90° turn.
3. Rotate all 12mm bolts in sequence an additional 90° turn.
4. Torque all 8mm bolts in sequence to 24 ft. lbs. (32 Nm).
Does the Toyota Celica really have two possible 1.8L engines?
Which is which?
According to the AERA Technical Committee, starting with the 2000-year model, Toyota offered two 1.8L engines – a 1ZZ-FE and a 2ZZ-GE with 107.5 and 109.5 cubic inches respectively.
Determining which engine you’re working on may be confusing, as many components are similar. Valve stem seals fall into this confusing category, because they physically appear the same. Original equipment and some aftermarket seals are color coded to ease seal identification. Refer to the chart at the top of this page to help identify the seals once they’re out of their original packaging.
Valve guides for the two engines also differ slightly in installed height and outside diameter. The 2ZZ-GE guide should protrude .602˝-.618˝ above the spring seat while the 1ZZ-FE guides should be .342˝-.358˝ above the spring seat.