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  • 2.8L deck hight

    I'm trying to find the deck hight specs on the 2.8L, preferably the genII engine, but am also interested in the deck hight specs of the genI, as a comparison to some things I have in mind.

    I looked in teh specs sectsion and didn't see it there.

    I beleive I have it in a book, but have lent that book to someone and will need to get it back.

    TIA

  • #2
    The blueprint block deck height for gen 1, 2, and 3 are all the same, 224mm.

    Marty
    '99 Z-28 - Weekend Driver
    '98 Dodge Neon - Winter Beater
    '84 X-11 - Time and Money Pit
    '88 Fiero Formula - Bone stock for now

    Quote of the week:
    Originally posted by Aaron
    This is why I don't build crappy headers. I'm not sure, I don't know too much about welding.

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    • #3
      Originally posted by RacerX11
      The blueprint block deck height for gen 1, 2, and 3 are all the same, 224mm.

      Marty
      Ok, maybe I'm using the wrong term, but how far down the hole is the piston at TDC?

      Just interested in the genI and II 2.8L

      Comment


      • #4
        Using the 224mm block deck heught, 2.99" stroke, 5.7" rods, and the following piston compression heights:

        Gen1 2.8 LO 1.578"
        Gen1 2.8 HO 1.599"
        Gen2 2.8 1.608"

        This puts the pistons ~0.046" below the deck for gen1 LO, ~0.025" for gen1 HO, and ~0.016" for gen2.

        Marty
        '99 Z-28 - Weekend Driver
        '98 Dodge Neon - Winter Beater
        '84 X-11 - Time and Money Pit
        '88 Fiero Formula - Bone stock for now

        Quote of the week:
        Originally posted by Aaron
        This is why I don't build crappy headers. I'm not sure, I don't know too much about welding.

        Comment


        • #5
          Originally posted by RacerX11
          Using the 224mm block deck heught, 2.99" stroke, 5.7" rods, and the following piston compression heights:

          Gen1 2.8 LO 1.578"
          Gen1 2.8 HO 1.599"
          Gen2 2.8 1.608"

          This puts the pistons ~0.046" below the deck for gen1 LO, ~0.025" for gen1 HO, and ~0.016" for gen2.

          Marty
          I was hoping someone would have this actually measured though, I did, back when I first built the engine for the Jimmy, but quickly forgot it and unfortunatly lost all that info because my laptop got FUBARed.

          thanks though.

          Comment


          • #6
            These are blueprint values, and should be good enough for any calculations. If you want it more accurate, you would need to measure your particular engine to account for tolerance stackup. Using measurements from another engine would be no more accurate than using the nominal values.

            Marty
            '99 Z-28 - Weekend Driver
            '98 Dodge Neon - Winter Beater
            '84 X-11 - Time and Money Pit
            '88 Fiero Formula - Bone stock for now

            Quote of the week:
            Originally posted by Aaron
            This is why I don't build crappy headers. I'm not sure, I don't know too much about welding.

            Comment

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