What the average cost to have valve seats installed

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  • mcgrath
    E30 Addict
    • May 2004
    • 445

    #1

    What the average cost to have valve seats installed

    I'm working on a mild stroker project and have a spare eta cylinder head. I can do most of the work on the head to make it flow like a i head but I don't have the ability to install the larger valves like in the i head.
    I was wanting to know what it might cost me to have all of the seats replaced in the eta head with ones for the i?
  • Jordan
    R3V OG
    • Oct 2003
    • 12907

    #2
    Get an I head....

    AFAIK the valves are the same size. But even porting the shit out of the eta head it still wont flow as good as a stock i head.
    Tenured Automotive Service Professional - Avid BMW Enthusiast

    Vapor Honing & E30 ABS Pump Refurbishment Service
    https://mtechniqueabs.com/

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    • Jarvis
      R3VLimited
      • Nov 2003
      • 2132

      #3
      "i" valves are +2mm over "e" valves

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      • mcgrath
        E30 Addict
        • May 2004
        • 445

        #4
        Thats is why it wont flow as good as the i head. I'm wanting to use the eta head because the bottom end is also an eta. I don't want to lower the compression or put in custom pistons. I'm still looking for an idea of cost to have seats replaced. I wouldn't need them cut or anthing just installed.

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        • mcgrath
          E30 Addict
          • May 2004
          • 445

          #5
          nobody?

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          • AdamF 88iS
            R3VLimited
            • Oct 2003
            • 2051

            #6
            Originally posted by Jarvis
            "i" valves are +2mm over "e" valves
            Depends on which E valves you have. Pre 12/86 they are 2mm smaller (40/34), but after 12/86 they are the same as I valves (42/36).
            Adam Fogg- '88 M3

            Common sense- It's the new 'gifted'

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            • mcgrath
              E30 Addict
              • May 2004
              • 445

              #7
              The head is dated 86 I never measured them. I will go check it out!

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              • mcgrath
                E30 Addict
                • May 2004
                • 445

                #8
                well looks like its pre 12/86 they measure 40/34 :(

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