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1978 Mako 25 - Blind Hog - bottom time

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  • #16
    The mechanic at work was given a junker so I pulled the prop off the old merc 225 to try out. It's another four blade merc prop, 13.5 x 18. At 5000 rpm I was showing right at 20 mph. Definitely not the right prop.

    I am starting to chase down a cooling problem. After running at cruise there is steam out the exhaust, which does disappear somewhat after idling but I know it shouldn't do it at all. I put in a new water pump with new housing before the Funament and will order two new thermostats today. Any suggestions appreciated.

    I also replaced the water pressure sending unit and hose and it still doesn't register. At idle with the cowling off, i could see water barely gettin pushed up into the hose. The temperature gauge doesn't seem to work either, and both gauges are good to have with the bigger hpdi's, so I'd like to get them working.
    1978 Mako 25 - Blind Hog
    1985 Mako 20c - sold
    Fort Walton Beach, FL
    https://forum.classicmako.com/forum/...og-bottom-time

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    • #17
      Great boat with a great name!
      [br]----------------------------------------------------------------[br]1984 SeaCraft 23 Bracketed w/Merc 250 [br]1979 SeaCraft 18 New Project[br]<*))))<[br]1992 Mako 211 w/Merc 225 \"Get Bent\" SOLD

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      • #18
        Great boat with a great name!
        [br]----------------------------------------------------------------[br]1984 SeaCraft 23 Bracketed w/Merc 250 [br]1979 SeaCraft 18 New Project[br]<*))))<[br]1992 Mako 211 w/Merc 225 \"Get Bent\" SOLD

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        • #19
          sweet '78

          if I do say so myself...

          []
          Murrells Inlet, South Carolina[br][br]\'78 Mako 25 & \'14 Suzuki DF300AP[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=41084[br]\'88 Mako 211 & \'01 Yamaha Z200 (sold)[br]http://www.thehulltruth.com/boats-sale-wanted/392113-sold-turn-key-classic-mako-21-lots-pics-video-sold.html[br]

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          • #20
            sweet '78

            if I do say so myself...

            []
            Murrells Inlet, South Carolina[br][br]\'78 Mako 25 & \'14 Suzuki DF300AP[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=41084[br]\'88 Mako 211 & \'01 Yamaha Z200 (sold)[br]http://www.thehulltruth.com/boats-sale-wanted/392113-sold-turn-key-classic-mako-21-lots-pics-video-sold.html[br]

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            • #21
              sweet '78

              if I do say so myself...

              []
              Murrells Inlet, South Carolina[br][br]\'78 Mako 25 & \'14 Suzuki DF300AP[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=41084[br]\'88 Mako 211 & \'01 Yamaha Z200 (sold)[br]http://www.thehulltruth.com/boats-sale-wanted/392113-sold-turn-key-classic-mako-21-lots-pics-video-sold.html[br]

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              • #22
                No project work yet, but transom job is definitely coming soon.....

                I drilled a hole next to the drain hole and it seeped water for four days. Moving the motor up two holes today and there was definitely some wood dust that came out with the bolts. Will certainly be taking it easy until the cutting starts, probably in next four to eight weeks.

                The weep hole



                I was removing some of the gelcoat that was applied to the top sides to see what was hiding and looks like whoever did the work certainly didn't grind out the cracks near enough. I'll be tackling these areas in small stages. A full restoration is not in the cards right now.....


                1978 Mako 25 - Blind Hog
                1985 Mako 20c - sold
                Fort Walton Beach, FL
                https://forum.classicmako.com/forum/...og-bottom-time

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                • Freespool19
                  Freespool19 commented
                  Editing a comment
                  That’s what we all say lol. Mine started as just a paint job too lol. Now its “ well I better put a new fuel tank in there now...” and “damn ya know hydraulic steering would be nice...” and “well I don’t wanna put the old teak back on”. 🤪🤪🤪 enjoy!

              • #23
                I love your 25. Other than my 224, that's the boat I would want. Take your time and make her right. It will last you a lifetime.
                Jim[br]Back-n-Black[br]1983 Mako 224[br]Davidson, NC[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=37894

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                • #24
                  I missed this originally. Nice pictures and looks like all will enjoy the benefits from this project. That miller lite looked good
                  1984 Mako 238 WA [br]2015 Suzuki 250 APX[br]Central PA/OCMD[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=35081[br]

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                  • #25
                    No real projects started yet, but noticed these stress cracks on the hull side that I do NOT recall seeing. These cracks are on the hull side where the transom is tabbed into the hull. I'm wondering if raising the motor two holes to the top is putting too much stress on the weak transom?


                    1978 Mako 25 - Blind Hog
                    1985 Mako 20c - sold
                    Fort Walton Beach, FL
                    https://forum.classicmako.com/forum/...og-bottom-time

                    Comment


                    • #26
                      It has begun. Was planning on cutting out the transom tomorrow but looks like I'll be building an engine stand. Removing an engine is not an easy one person job....

                      Notice the water leaking out of the lower bolt holes. [B)]


                      1978 Mako 25 - Blind Hog
                      1985 Mako 20c - sold
                      Fort Walton Beach, FL
                      https://forum.classicmako.com/forum/...og-bottom-time

                      Comment


                      • #27
                        When I was fogging the motor I noticed quite a bit of corrosion.

                        This is the lower left (port) spark plug:



                        And the washer just above. I must have a water leak and water spraying under the cowl. There was a fine mist of salt all over so everything was sprayed with corrosion block. All the plugs looked normal, except some carbon build up so I'll start with a heavy dose of ringfree or sea foam when she gets bolted back on.



                        The plan is a complete transom job from the outside, splashguards added and the whole thing done with Nida. Goal 1 is to be able to catch Cobia season in two months. If I miss that, the Funament is the next deadline. I'm trying to keep this limited to the transom and fuel tank cover which is badly delaminated, but will see how it goes. A full restoration is in the two year plan. I want to fish this season!
                        1978 Mako 25 - Blind Hog
                        1985 Mako 20c - sold
                        Fort Walton Beach, FL
                        https://forum.classicmako.com/forum/...og-bottom-time

                        Comment


                        • #28
                          Alright Steve, as long as you are not on Chuck time you will make it easy[]
                          David, New Kent, Va[br]



                          [br]Project Thread: http://www.classicmako.com/forum/top...TOPIC_ID=21067[br]

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                          • #29
                            quote:


                            Originally posted by Sailor



                            Notice the water leaking out of the lower bolt holes. [B)]




                            That water draining out is a good sign.....think about how much easier it will be removing the wet rotted core []

                            When I did mine the original core was some what drier. This required more effort and time to get it out.

                            The Nida Bond pourable transom compound is very user friendly. Requires more prep/finish work but you will end up with a solid, void-free, water-proof transom that will last a lifetime.
                            A wise man once said, "Son... if it has tits, tires or a transom... sooner or later it's gonna give you problems." -the old man

                            1972 Classic Mako 19
                            https://forum.classicmako.com/forum/...t-squot-ole-19

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                            • #30
                              That will be the next thing I do, replace the transom and I want to use the nida. Ill be watching close to see how you do this. Good luck
                              Tight Lines!!!![br]\"Project\": http://classicmako.com/forum/topic.asp?TOPIC_ID=44276[br]Miami, Fl[br]1979 MAKO 25\'6 \"Leprechaun\" 2001 Merc 250 hp EFI \"SOLD\"[br]BOATLESS[br]

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