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porting and polishing a turd

  #1  
Old 08-24-2005, 07:38 PM
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Default porting and polishing a turd

ok here we go the title is a joke so no complaining or whining

what kind of gains would i see with a good port and polish
got answers
 
  #2  
Old 08-24-2005, 07:56 PM
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Default RE: porting and polishing a turd

Depends... on a built motor with a cam you could see 15Hp, but on a turd you may actually lose some bottom end and not be able to make it up on the top end. It's a good idea if you already have the head off to change the cam or mill it, but I wouldn't do it just for the sake of P+P.
 
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Old 08-24-2005, 08:06 PM
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Default RE: porting and polishing a turd

ok thanks
 
  #4  
Old 08-24-2005, 09:48 PM
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Default RE: porting and polishing a turd

milling it and adding a cam and adjustable cam gear is the best mods for the money. nice and easy. and on a really tight budget, just the cam gear and the milling will make a big difference by themselves.
 
  #5  
Old 08-24-2005, 10:32 PM
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Default RE: porting and polishing a turd

Are there any cams out for the D 17 in a 02' EX. If so what kind and how hard are they to install and prices. Thanks
 
  #6  
Old 08-24-2005, 11:21 PM
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Default RE: porting and polishing a turd

you want to define milling cause i have access to a cnc mill
 
  #7  
Old 08-25-2005, 01:25 AM
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Default RE: porting and polishing a turd

Milling is shaving the surface of the head to change the shape of the combustion chamber- making it smaller and effectively raising compression. Usually about 0.020" is good for ~ half a point.
 
  #8  
Old 08-25-2005, 08:27 AM
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Default RE: porting and polishing a turd

Milling is shaving the surface of the head to change the shape of the combustion chamber
more the depth than the shape, but youve got the idea.
 
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