ported vs non-ported heads on a roots blown combo question

Old 08-11-2007, 08:19 PM
  #11  
ccso640
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Yea, its an alcohol motor which is why the compression is up a little. Littlefield said I could get away with up to 12-1 or so. Thanks for the info! Chris
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Old 08-19-2007, 09:16 AM
  #12  
henny
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Hello
How much are the exhaust ports different for a blown motor than a N/A motor? (ported)
thanks
Tom
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