Fitting Pistons: 2.7L
- Arrow on piston heads indicate direction of installation. Weight class is indicated by a "+" or "-" sign. All pistons must be in same weight class. Maximum weight difference between pistons can be .35 oz. (10 grams).
- Measure piston diameter 90° to pin bore and at specified height from bottom of piston skirt. See PISTON DIAMETER CHECKPOINT (2.7) table. Piston crown is stamped with diameter and arrow for installation direction.PISTON DIAMETER CHECKPOINT (2.7)
Application Piston Height In. (mm) Checkpoint In. (mm) Mahle 2.71 (68.7) .315 (8) Mahle 3.06 (77.7) .905 (23) KS 2.71 (68.7) .551 (14) KS 3.06 (77.7) .905 (23) - Measure cylinder at top, middle, and bottom. Out-of-round must not exceed .0012" (.03 mm). Taper should not exceed .0008" (.02 mm). If oil clearance is excessive, bore and hone cylinder block for installation of oversize pistons.
PISTON DIAMETER SPECIFICATIONS
| Application | In. (mm) |
|---|---|
| Standard | 3.3063 (83.98) |
| Special | 3.3094 (84.06) |
| 1st O.S. | 3.3161 (84.23) |
| 2nd O.S. | 3.3260 (84.48) |