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HE size

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  • HE size

    I have many HE, including a SS one. How do I determine the size needed for my 383" stroker?
    1988 26' cuddy
    1975 20' open
    16' Sandpiper
    14' Certified Fiberglass

  • #2
    Amount of surface area of tubes and volume of water and temp of cooling water. Need to know design specs of manufacturer.
    Atlantic City, NJ
    1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

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    • #3
      My core is 4.125" diameter and 21" long.

      Steve
      1998 260 Mackinaw Sea Maxx 5.7 HO TBI 12' Klamath w/ 20hp Tohatsu EFI

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      • #4
        Thanks Steve. How to figure the sq inches of a tube?
        1988 26' cuddy
        1975 20' open
        16' Sandpiper
        14' Certified Fiberglass

        Comment


        • #5
          Pi x radius squared times the length or 3.14 times (1/2 the diameter of the tube times 1/2 the diameter) times the length. Confused? thats the best I can explain it. Sorry
          Atlantic City, NJ
          1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

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          • #6
            Originally posted by Ship View Post
            Pi x radius squared times the length or 3.14 times (1/2 the diameter of the tube times 1/2 the diameter) times the length. Confused? thats the best I can explain it. Sorry
            Soooo, about 264 sq in. Thanks, now I can go through my pile and measure.
            1988 26' cuddy
            1975 20' open
            16' Sandpiper
            14' Certified Fiberglass

            Comment


            • #7
              Using tuners example, 360 and 5/8 inches
              Atlantic City, NJ
              1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

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              • #8
                4.125 divided by 2 equals the radius then times itself(2.0625 times 2.0625) 4.25390625 times 3.14 equals 13.357265625 times 27equals 360.646171875 subtract 360 equals .646171875 time 16 equals 10/16s or 5/8. That's the long way or just use a calculator.
                Atlantic City, NJ
                1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

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                • #9
                  You might boil it before install...........................

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                  • #10
                    Originally posted by Quik Fix View Post
                    Thanks Steve. How to figure the sq inches of a tube?
                    The volume of my HE is about 260 cubic inches, I don't know the tube size or count to determine the internal surface area. I think if you keep the volume of the core over 250 cubic inches the engine will be fine. The core I installed was made by Seakamp and it was used on 5.7L and 6.2L engines with full systems.
                    Steve
                    1998 260 Mackinaw Sea Maxx 5.7 HO TBI 12' Klamath w/ 20hp Tohatsu EFI

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                    • #11
                      Thanks for waking up my high school math brain. Boom, there is that formula. I actually have a few of the HEs that Steve shows but want to use my SS one for the cool factor. I'll measure today. Thanks everyone.
                      1988 26' cuddy
                      1975 20' open
                      16' Sandpiper
                      14' Certified Fiberglass

                      Comment


                      • #12
                        Sorry Jerry, I read 21 as 27 but you got the idea.
                        Atlantic City, NJ
                        1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

                        Comment


                        • #13
                          Jerry did you figure this one out? If not I can dig up the company I bought mine from and pass along the info to you. They build them in house.

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                          • #14
                            Thanks Pat. I have plenty of heat exchangers. I was just hoping to use the SS one that I have for my stroker. Too small. Just another wasted wish.
                            1988 26' cuddy
                            1975 20' open
                            16' Sandpiper
                            14' Certified Fiberglass

                            Comment

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