How much to mill off head to still run 93 Oct?

• How much to mill off head to still run 93 Oct?
  Posted by Jeremy250 on 10 Jun, 2017 21:29
• Hello to everyone, I just got a 90LT250R and want to know how much can be Milled off a head to still run 93 Octane fuel with a ported cylinder? I have a friend who has a ported cylinder and milled head he is selling to me and I nor him know how much the head is Milled, I do want a race fuel quad lol ANY help is appreciated.
  
                           (The head is milled down to where the squish band just begins)
  
  THANK YOU FOR ALL THAT REPLY!
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• #1 Reply
  Posted by Jeremy250 on 12 Jun, 2017 20:10
• Hello to all new guy here in need of help.
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• #2 Reply
  Posted by ZillaFreak on 13 Jun, 2017 04:49
• measure the squish, the band, the the dome size.
  Just milling a head is the worse thing to do.
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• #3 Reply
  Posted by Jeremy250 on 13 Jun, 2017 20:02
• I do not have the tools needed to measure all that but it sounds like I would be better off going with a coo head set up if the dome would need re shaped.
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• #4 Reply
  Posted by Q2W on 14 Jun, 2017 08:32
• cool head domes will require the same.
  
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• #5 Reply
  Posted by Jeremy250 on 14 Jun, 2017 20:06
• Ok never mind, thanks for the info guys. I think I will play it safe and keep my stock head better safe then sorry.
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• #6 Reply
  Posted by Jeremy250 on 14 Jun, 2017 20:13
• So I am new to power valved engines, is it possible to adjust my power valve so that it hits in the lower RPM'S of the power band? if so how is it done?
  
  Again THANK YOU to all that apply.
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• #7 Reply
  Posted by Nekrofilliak on 03 Jul, 2017 05:47
• use the power valve adjusting knob ........ 
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