Engine & Internal Chat about beefing up your engine's insides here.

Engine Head Work

  #1  
Old 11-10-2008, 07:06 PM
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Default Engine Head Work

I am looking at buying a head for my 97 civic EX, the head has crower titanium valves and springs, and unorthodox adjustable gears. I would like to get it ported and bored but im not sure how much I should have it done, could you guys help me out. Also the guy was suggesting I have it polished, what exactly is polished and what does it do, also would I need to have my car taken to a dyno shop after these upgrades.
 
  #2  
Old 11-10-2008, 07:38 PM
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what kind of bottom end do you have is it stock? built? semi built?
 
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Old 11-10-2008, 07:45 PM
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Originally Posted by rags2richs View Post
what exactly is polished and what does it do, also would I need to have my car taken to a dyno shop after these upgrades.
http://www.sa-motorsports.com/diyport.aspx

when you add/remove more air into the cylinder head, you need more fuel to compensate, so yes, it should be tuned in the end to have any gains.
 
  #4  
Old 11-11-2008, 01:54 PM
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My bottom end is bone stock, what kind of power gains might i expect from a head job.
 
  #5  
Old 11-11-2008, 04:25 PM
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anywhere from 5hp-25hp depending on the supporting mods. that bottom end you will only be able to get so far
 
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