Posted by PackardV8 on January 21, 2013 at 07:16:28 from (64.12.116.144):
In Reply to: 134 piston direction? posted by Tony in Mass. on January 20, 2013 at 16:11:58:
Wrist pin offset is measured with a micrometer or caliper.
As a side note there has been mention of " balancing pistons" or other similar such illusions. Altho it is optimal to have all pistons weighing the same it is unnecessary for relatively slow turning engines. Ex: Some of the old prewar buicks used cast iron pistons while the only available OEM SUPPLIED replacements at THAT TIME were Al pistons.
There is absolutely NO correlation between engine balancing and pistons. Pistons have absolutely nothing to do whatsoever with engine balancing. This piston 'balancing' and crank REbalanicng for piston variation is complete nonsense. Makes for great articles to sell magazines to arm chair engine experts.
Pistons are RECIPROCATING weight. NOT rotating weight.
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