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Old 01-05-2013, 08:05 PM   #20
scootarida1
Scooby Newbie
 
Member#: 154534
Join Date: Jul 2007
Chapter/Region: Tri-State
Location: Wilkes-Barre, PA
Vehicle:
2005 Forester XT
Borg Warner S261

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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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