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Head milling - Disassembly required?

Discussion in 'Engine Building' started by brian11to1, Nov 26, 2005.

  1. brian11to1

    brian11to1 Senior Member

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    I dont believe so, I believe the head can be machined without disassembly. It will need to be cleaned hot tanked whatever before reassembly. But, Im more then likely wrong
     
  2. jamesA

    jamesA Well known pissed off telephone guy VIP

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    I would venture to say yes, it will need disassembled just for the reason that it will need cleaned and hottanked.

    It'll be easier to clean it up when it's disassembled. Have you thought about porting it while you're getting it machined? This would be the time to do it.
     
  3. phyregod

    phyregod !!YTINASNI

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    Yes, dissasembly is required. When they mill they will make 89347652983479518743 little tiny metal shavings. And those will get EVERYWERE. You won't be able to get them all out if the head is assembled.
     
  4. reckedracing

    reckedracing TTIWWOP VIP

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    no disassembly is not required...

    anytime i send out a head to get resurfaced i always leave the valves in it...
    good idea to change the valve seals after hot tanking it but its not necessary...

    local machine shop charges 75 bucks to mill a head
    and 75 bucks to regrind the valves and valve seats to stock spec

    150 for a brand new head, then just install new valve seals and throw it on...
     
  5. brian11to1

    brian11to1 Senior Member

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    Which is why I said what I said. I had my P75 head milled and cleaned FULLY assembled.
     
  6. reckedracing

    reckedracing TTIWWOP VIP

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    i wasn't disagree'ing with you or putting you down...
    [​IMG]
     
  7. phyregod

    phyregod !!YTINASNI

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    The lazy shops will not dissasemble the head. And that is bad. But your shop probably dissasembles, then does the valve job, then mills, then re-assembles. You have to dissasemble for a valve job anyway. If they do not dissasemble for a valve job you need to change shops, because you are getting a shitty redneck valve job.
     
  8. reckedracing

    reckedracing TTIWWOP VIP

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    if i;m getting the valves done i always bring the head with the valves already out of it in a cardboard template

    the toyota head i just recently got milled was sent in complete, and picked up complete
    never disassembled, just cleaned before and after the milling
     
  9. brian11to1

    brian11to1 Senior Member

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    again, i was just agreeing with you.
     
  10. Dark91zc

    Dark91zc Senior Member

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    to your question here is a answer for you because i have ran into this issue before yes because if you leave the cam on the head you will have a set of valves open and they will also charge you more if you leave the cam bolted in. so when looking for a machine shop ask the them there price with the cam already removed :) i hope this will help you some and good luck :)



    lance
     
  11. Dark91zc

    Dark91zc Senior Member

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    sorry for being late :)
     
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