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V4 engine, want to bore it out, tilt head or bob?

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  • #16
    You can be off 2 degrees on the header, you cant on a bore..
    What is the block size at head gasket surface, or at least bore size ?

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    • #17
      Originally posted by 754 View Post
      You can be off 2 degrees on the header, you cant on a bore..
      What is the block size at head gasket surface, or at least bore size ?
      That's why they make DTI's and mirrors on sticks.
      Location- Rugby, Warwickshire. UK

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      • #18
        Originally posted by vpt View Post
        Van Norman boring machine. I've seen those and even used one in small engine shop years ago. I'd like to have one but money is tight.
        Actually no, its a burtonwood aero all hydraulic bar. The van norman and buma's use a acme to feed, this is all hydraulic with a separate motor driven by a giant cable coming off the top of the cylinder so the motor is isolated from the bar itself. Same difference though, just being a pedant because its a unusual piece of kit.

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        • #19
          Originally posted by 754 View Post
          You can be off 2 degrees on the header, you cant on a bore..
          What is the block size at head gasket surface, or at least bore size ?
          Originally posted by Mark Rand View Post
          That's why they make DTI's and mirrors on sticks.

          I'd obviously dial it in so the spindle was in line with the bore.

          The bores are just over 3.5", over all gasket size width is about 5", 14ish" tall/long.
          Andy

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          • #20
            Is it a one time job or do you expect to do it again ?
            Making a good overhanging plate is a bit of work but if you use it often , worth it.
            I bored a lot of heads and cases, to take big bore cylinders.
            I also use a hanging over plate to re drill bolt patterns in race car axles.

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            • #21
              I don't plan to do this exact job again but I am sure other type motors and whatnot will be along. I really like the idea of that angle plate posted earlier. I think that along with some jacks and extra clamp here and there will suffice. I think I will get good use out of a 90 degree plate for the mill.
              Andy

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              • #22
                The 90 deg plate is a must I have a few.,
                A hanging over the side plate is handy too, for axles and the like..

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