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  • Don't put the risers on before the valve covers. Can't get to one of the cover bolts. Now the dipstick won't wort.
    1988 26' cuddy
    1975 20' open
    16' Sandpiper
    14' Certified Fiberglass

    Comment


    • Sizing of the heat exchanger is done by the heat rejection rating of the engine.If you want to double check, someone should be able to give you a figure for the engine in BTU's. You can then match it to the heat exchanger specks. Believe it or not in my experience the biggest issue here is a raw water pump that pumps too much. Doesnt let the water absorb the heat or something. We've actually have put washers in the overboard discharge pipe to restrict the flow. Doesnt sound like there will be an issue here.
      Last edited by Pedlyr; 03-26-2022, 07:26 PM.
      '78 20ft Cuddy
      Mercruiser 350 FWC preVortec w/Carb

      Comment


      • Originally posted by Quik Fix View Post
        Don't put the risers on before the valve covers. Can't get to one of the cover bolts. Now the dipstick won't wort.
        I went with the dipstick that swings out to the front of the engine
        '78 20ft Cuddy
        Mercruiser 350 FWC preVortec w/Carb

        Comment


        • Port side dipstick.
          1988 26' cuddy
          1975 20' open
          16' Sandpiper
          14' Certified Fiberglass

          Comment


          • Mines on Stbd side. My records show this Mercruiser part number 15296A2. But I dont have the hockey puck on the end.

            https://www.nlamarine.com/products/m...31591745060961
            '78 20ft Cuddy
            Mercruiser 350 FWC preVortec w/Carb

            Comment


            • Click image for larger version

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ID:	34164 Final assembly Click image for larger version

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              1988 26' cuddy
              1975 20' open
              16' Sandpiper
              14' Certified Fiberglass

              Comment


              • more, finally done. Will go in boat on Monday.
                1988 26' cuddy
                1975 20' open
                16' Sandpiper
                14' Certified Fiberglass

                Comment


                • Very nice. Where did you get those exhaust risers? Are they 3"? I like those better then my standard Mercruiser ones.
                  '78 20ft Cuddy
                  Mercruiser 350 FWC preVortec w/Carb

                  Comment


                  • Originally posted by Pedlyr View Post
                    Very nice. Where did you get those exhaust risers? Are they 3"? I like those better then my standard Mercruiser ones.
                    Fredwarner,net. Bought a few parts from them. Same day shipping for free.
                    1988 26' cuddy
                    1975 20' open
                    16' Sandpiper
                    14' Certified Fiberglass

                    Comment


                    • Looks good Jerry. Great talking to you today. I’ll reach out next week.

                      Comment


                      • Finally, in the boat. Click image for larger version

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ID:	34206 I was surprised at how much room there is to work on this engine. I can reach everything. Other SBs in 26'ers that I looked at had no space between the gutter and manifold.
                        1988 26' cuddy
                        1975 20' open
                        16' Sandpiper
                        14' Certified Fiberglass

                        Comment


                        • Have the cooling system all put together but, It is just to make sure everything will fit. I can't find any 1 3/4" 90* fittings. Have it mocked up with PVC but they won't work with 200* temps. Any reason not to use galvanized pipe fittings?
                          1988 26' cuddy
                          1975 20' open
                          16' Sandpiper
                          14' Certified Fiberglass

                          Comment


                          • Where are these 1-3/4 fittings going? Yea, fresh water is going to get 200 degrees but few raw water side places get that hot. I recently purchased, at a hardware store, some plastic fittings that are rated for either 200 or 250 degrees. (I too used them in a mockup.) Point being a high temp plastic might be enough if in a lower temp and safe place if it fails.

                            Regarding galvanized, again it depends where it is going. Not as good as bronze but you may have to settle

                            What exactly are you looking for.. Threaded both ends, hose both ends, or something in between?
                            C Rhodes
                            26' Mackinaw - 1990
                            351 Indmar (1990-2006: Great Engine)
                            351 PCM (2006 - Current)
                            Southport, NC

                            Comment


                            • Click image for larger version

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ID:	34331 Click image for larger version  Name:	26cooling1.jpg Views:	0 Size:	3.73 MB ID:	34329 Click image for larger version  Name:	26cooling2.jpg Views:	0 Size:	2.56 MB ID:	34330 Need to connect the fresh water hoses. From heat exchanger to the expansion tank and expansion tank to thermostat neck.. Need 2 90* elbows. 1 1/2" galvanized pipe screws into the hoses nicely.
                              1988 26' cuddy
                              1975 20' open
                              16' Sandpiper
                              14' Certified Fiberglass

                              Comment


                              • Redid the FW side with galvanized elbows. 1 3/4" hose system but no 1 3/4" fittings anywhere.1 1/4" pipe goes in and tightens down. No leaks. Like the way I've relocated the trim pump, batteries and HE. This engine is easy to service. I can get my chubby hands on everything.
                                1988 26' cuddy
                                1975 20' open
                                16' Sandpiper
                                14' Certified Fiberglass

                                Comment

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