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head milling

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    #1

    head milling

    how much could i mill from my head and still be safe? i was thinking like .020 and have the head p/p,h23 im port matched,bisi im gasket,header or bisi header(if i can bring myself to pay $900),a6 cam or maybe a stage 1 bisi cam.
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    #2
    why do you want to mill the head? if its not much and basically a cleanup job then should be fine but i wouldnt suggest trying to raise compression by milling head.

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      #3
      why not? i cant afford pistons and to rebuild the motor but i can afford this do to my uncles machine shop and flow bench. i have milled the head on lots of hondas but dont know alot about the f22's. so i am just curious as to why you wouldnt-thanks

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        #4
        Just be aware that if you warp the head, it is then garbage. They can only be milled so much.

        But if you can do it free at your uncle's shop, then it's not a bad idea. If you ruin the head, you can just get another one!

        I can't accurately answer your question, though, so I'm not going to try and end up giving you wrong information. Someone here will know better.






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          #5
          i went .030 and it gave me half a point in compression. thats as far as id want to go especially if you are getting a higher lift cam.
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            #6
            If you're too cheap to build the bottom end, then you don't need to focus on upping the compression too much. Stock bottom end components aren't meant to handle much beyond the stock compression. That being said, I'm not sure on what's the weak point on F22ax blocks, but the stock rods aren't beasts by any means.

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              #7
              Originally posted by wed3k View Post
              i went .030 and it gave me half a point in compression. thats as far as id want to go especially if you are getting a higher lift cam.
              X2, To raise the compression (assuming thats why you want to mill the head) You would be better to get high compression pistons.


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                #8
                Originally posted by mondojackal View Post
                Stock bottom end components aren't meant to handle much beyond the stock compression. That being said, I'm not sure on what's the weak point on F22ax blocks, but the stock rods aren't beasts by any means.

                Ive found that the f22ax weakness is the piston ring lands crack. havent seen many issues with rods and definatly none with the block.

                My Wiretuck/ Insane engine bay
                member ride thread
                11.86@120mph T66 turbo 612hp F22A
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                People can hate all they want, my f22 is faster than yours.
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                John 10:18 "No one takes it from me, but I lay it down of my own accord. I have authority to lay it down and authority to take it up again. "

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                  #9
                  Yeah, the block itself isn't a big one, but high compression is different than boost. Rods tend to bend under high compression. Valves tend to take a beating, too.

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