Cylinder Bore

Cylinder Bore - Taper





1. Measure the cylinder bore at the top and bottom. Verify the cylinder bore is within the wear limit. The difference indicates the cylinder bore taper. Bore the cylinder to the next oversize.

Cylinder Bore - Out-of-Round





1. Measure the cylinder bore in two directions. The difference is the out-of-round. Verify the out-of-round is within the wear limit and bore the cylinder to the next oversize limit.

Cylinder Bore - Honing





Special Tool(s)





1. Install and tighten all main bearing caps to specification.





2. NOTE: To correct taper or out-of-round, bore the cylinder block. Honing should be done when fitting new piston rings and to remove glazed surface finish.

Hone with the Engine Cylinder Hone Set, at a speed of 300 - 500 rpm and a hone grit of 180 - 220 to provide the desired cylinder bore surface finish of 18-38AA.

Cylinder Bore - Cleaning

1. CAUTION: If these procedures are not followed, rusting of the cylinder bores may occur.

Clean the cylinder bores with soap or detergent and water.
2. Thoroughly rinse with clean water and wipe dry with a clean, lint-free cloth.
3. Use a clean, lint-free cloth and lubricate the cylinder bores.
^ Use Super Premium SAE 5W-30 Motor Oil XO-5W30-QSP or equivalent meeting Ford specification WSS-M2C153-G.