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Old 01-05-2013, 08:05 PM   #20
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
Chapter/Region: TXIC
Location: Houston, TX
2017 Forester 2.0XT


Measuring and Weighing the pistons using a micrometer good to 0.0001". Its been a while since I did some measuring with a micrometer so I took a bunch of measurements until they were consistent.

Piston 1:

Weight: 397.5 g (picture is lying, re-weighed with the piston skirt facing the same as the others)
Diameter: 3.9237 "

Piston 2:

Weight: 397.7 g
Diameter: 3.9237 "

Piston 3:

Weight: 397.6 g
Diameter: 3.9235 "

Piston 4:

Weight: 397.8 g
Diameter: 3.9237 "

So far the pistons seem fairly well balanced and the diameters are within the tolerances I would accept. I will see how the piston pins weigh out to see if I can balance the pistons closer and bring piston 1 closer to the others.
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Last edited by scootarida1; 01-05-2013 at 08:06 PM. Reason: add detail/formatting
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