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Old 07-06-2010 | 11:23 AM
  #6  
Dr1Driver
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Default RE: Push Rod Size?
The difference in diameter is not that dramatic (25%):
Diameter isn't what handles load, area is - and there's a big difference there.

Per your diameter figures:

2-56, .074D = .00429 sq.in.
4-40, .095D = .00708 sq.in.

Almost twice.
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