Note: Bore all four cylinders to match the outside diameter of the oversized pistons.
Replace piston rings with ones that will fit oversized pistons.
Oversized piston diameter (0,50):
- 2L engines - 92.44-92.47mm
- 3L Engine - 96.44-96.47mm
1. Calculate the cylinder bore.
A) Using a micrometer, measure the piston diameter at right angles to the pin axis at a distance of 58 mm for 2L engines and 56 mm for 3L engines from the piston crown.
b) Calculate the size to which each cylinder needs to be bored using the following formula:
Size for boring = P + C-H,
where P is the piston diameter,
C - clearance between piston and cylinder 0.05 - 0.07 mm.
H - honing allowance of 0.02 mm or less.
2. Rebore and honing the cylinders to design dimensions.
- Maximum honing level: 0.02 mm.
Warning: Excessive honing will cause cylindricity to fail.