Pistons, Piston Pins & Piston Rings Specifications

1999 Mazda 626 ES, 2.5 D, StandardSECTION Pistons, Piston Pins & Piston Rings Specifications
PISTONS, PINS & RINGS

Application In. (mm)
Pistons
Clearance
Standard .0012-.0022 (.030-.056)
Maximum .005 (.13)
Diameter
Standard 3.3249-3.3262 (84.452-84.485)
.010" (.25 mm) Oversize 3.3347-3.3360 (84.701-84.734)
.020" (.50 mm) Oversize 3.3346-3.3459 (84.699-84.986)
Pin Bore Diameter .7869-.7874 (19.988-20.000)
Pins
Diameter .7864-.7866 (19.975-19.980)
Piston Fit .0004-.0010 (.010-.025)
Rod Fit (Interference Fit) .0005-.0015 (.013-.038)
Rings
No. 1
End Gap (1) .006-.012 (.15-.30)
Side Clearance (2) .0008-.0026 (.020-.066)
No. 2
End Gap (1) .010-.016 (.25-.41)
Side Clearance (2) .0012-.0025 (.030-.064)
No. 3 (Oil)
End Gap (1) .008-.028 (.20-.71)
Side Clearance (2) .007-.016 (.18-.41)
(1) Maximum end gap is .040" (1.0 mm).
(2) Maximum side clearance is .006" (.15 mm).
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.