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Head Milling vs. Larger Piston!!!

  #1  
Old 08-28-2006, 10:59 AM
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Default Head Milling vs. Larger Piston!!!

Just like it says .. what are pro's cons vs each.. base for those that dont know i have a Y7 block and going to be doing a MINI ME but am having full headwork done prior to install and also wanted to refresh bottom end with new rings/bearing/shotpeed rods etc.. but I used the compression calculator and seen with only slight milling of the head you can obtain upwards of 11:0:1 compression on stock piston.. just wondering vs buying some d16a1 pistons or aftermarket 10:5:1 pistons .. what are advantages of replacing the pistons .??
 
  #2  
Old 08-28-2006, 11:20 AM
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Default RE: Head Milling vs. Larger Piston!!!

The advantage is you can go slightly over bore and you would be able to spray on them. If your staying N/A w/o any other plans OE honda pistons will be fine.
 
  #3  
Old 08-28-2006, 11:38 AM
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Default RE: Head Milling vs. Larger Piston!!!

You got the comp calculators working. Good. [sm=smiley20.gif]

This one is my favorite. http://www.zealautowerks.com/dseries.html

Since we're on the subject... kinda... what about block decking? How far can a block safely be decked?
 
  #4  
Old 08-28-2006, 12:15 PM
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Default RE: Head Milling vs. Larger Piston!!!

you shouldn't deck the block anymore than needed to keep it squared and true. same with the head imo, but i would rather not do either
 
  #5  
Old 08-28-2006, 12:32 PM
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Default RE: Head Milling vs. Larger Piston!!!

Well yeah, if you did your pistons would be sticking out the block. I guess really I need to get the block in my hands before making any decisions about it...
 
  #6  
Old 08-28-2006, 12:32 PM
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Default RE: Head Milling vs. Larger Piston!!!

I would just mill the head. That's what I would do anyways.
 
  #7  
Old 08-28-2006, 12:48 PM
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Default RE: Head Milling vs. Larger Piston!!!

glad i got some responses this time :P .. now if i can get some return input in same post about whether i can obtain around 160whp on my MINI ME build by only refreshing bottom and and getting full headwork done with stage 2 or 3 valvetrain and Neptune job.. by changing compression .. and what compression you think i should run?>The more i keep reading into NA the more im seeing people breaking into 13's N/A on D's ..
 
  #8  
Old 08-28-2006, 12:51 PM
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Default RE: Head Milling vs. Larger Piston!!!

i wouls say the maximum amount possible for a dd and street gas 91 octane or 93 octane.
 
  #9  
Old 08-28-2006, 01:04 PM
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Default RE: Head Milling vs. Larger Piston!!!

If you can get E85 in your area, convert to that and push it's comp through the roof. E85 is rated at about 105 octane.
 
  #10  
Old 08-28-2006, 01:05 PM
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Default RE: Head Milling vs. Larger Piston!!!

ORIGINAL: ef4life

i wouls say the maximum amount possible for a dd and street gas 91 octane or 93 octane.
This is something I've always wondered. What is the limit of our little D-series's on 91 and 93 octane, compression wise?
 

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