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Porting Calculator (V4.2.2)
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Unit Price:   USD 16.25 
Total:   USD 16.25
 Info includes 4.3% sales tax/VAT to USD 15.58: USD 0.67
Delivery:   Download
Platform:   Windows 98, Windows NT, Windows XP x32, Windows Vista x32
Version:   4.2.2
Language:   English
Option:  
File Size:   Full version: 5.6 MB
Download Time:   Full version
  • 56k: ~13 min.
  • DSL/Cable (1/8/16Mbit): <1 / <1 / <1 min.

 
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Will calculate the following based on desired rpm operating point:

  • Port heights
  • Port durations
  • Required ranges of port mean areas
  • Possible ring flutter rpm
  • Mean piston speed
  • Suggests carburettor size
  • Power meter (you input expected bmep value)
  • Adjust port shapes for target areas in CAD window