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Old 09-06-2006 | 11:33 PM
  #16  
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Motorboy
 
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From: Bergen, NORWAY
Default RE: Porting Engine for Performance

Attentive, if your engine has ABN sleeve, you can not file, grind the ports. The nickel layer will peel off. Because the nickel must be whole at sleeve to prevent peel off.

Jens Eirik