Note: Rebore all four cylinders to the outside diameter of the oversized pistons. Replace the piston rings with ones that match the oversized pistons.
Piston diameter of the 1st repair size (+0.50 mm):
- Engines 2L, 2L-T — 92.44 - 92.47 mm
- Engines 3L, KZ-T - 96.44 - 96.47 mm
Diameter of pistons of the 2nd repair size (+0.75 mm):
- Engine 1KZ-T — 96.69 - 96.72 mm
The diameter of the pistons is 3rd repair size (+1.0 mm).
- Engine 1KZ-T — 96.94 - 96.97 mm
1. Calculate the cylinder bore size.
a) Using a micrometer, measure the piston diameter at a right angle to the pin axis at a distance of 58 mm for 2L, 2L-T, 1KZ-T engines and 56 mm for 3L engines from the piston bottom.
b) Calculate the size to which each cylinder must be bored using the following formula:
Boring size = P+C-H,
where P is the piston diameter,
C - clearance between piston and cylinder 0.05-0.07 mm.
H - honing allowance 0.02 mm or less.
2. Bore and hone the cylinders to the calculated dimensions.
Maximum honing level: 0.02 mm
Caution: Over-honing will result in poor cylindricity.