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  1. J

    142 supercharger on a stock 5.7 ?

    The Weiand blowers were discontinued after I made the post, so I used a Edelbrock E-force supercharger kit. The installation was not a direct bolt on but it is manageable for someone with experience. I had to change the aluminum lower pulley to a steel unit, grind the manifold for distributor...
  2. J

    142 supercharger on a stock 5.7 ?

    Hardin Marine may have the answer to the t-stat question
  3. J

    142 supercharger on a stock 5.7 ?

    Thanks everyone for the responses. This is what I’m thinking... this carb’d 350 might have made 260 hp at sea level, I bet it’s closer to 200 up here. And this boat is a big fat girl. It has a Weber 9665 AFB, jets and rods are still available. Probably 625 cfm from what little I can find. It’s...
  4. J

    142 supercharger on a stock 5.7 ?

    My 1995 Donzi 212 has a Mercruiser 5.7/350, probably 260 hp. My favorite lake is at 6500 feet which really hurts power. The 142 Weiand supercharger is looking like a good option to restore some performance. (<100hp) The clearance between the blower snout and thermostat housing is questionable...
  5. J

    Shift interrupter operation and adjustment after restoration

    When converting your ignition to HEI from Thunberbolt IV/V, set up the factory shift cable and shift interruptor per the manual, just as it was designed. Connect the green/white wire from the interruptor microswitch to the tach wire at the distributor. This same wire previously went to the TB...
  6. J

    Shift interrupter operation and adjustment after restoration

    Rainy and cold here today. I went back out and reset the cables and relubed pivots. Also endless detail work like snap retainers for the cushions, and rubber bumpers on the windshield. I have not completed an engine cover, so the engine and bilge is fully exposed to the atmosphere. So while I...
  7. J

    Shift interrupter operation and adjustment after restoration

    Lots of firsts for me on this project. First boat. Flake paint. Fiberglass. Industrial sewing machine. Welding stainless. etc I can still be humbled by things like my own myopic approach to a shift interrupter.
  8. J

    Shift interrupter operation and adjustment after restoration

    Thank you, Chris Lever assembly, actuating. I will adjust the operation of this thing and report back. When using an automotive based GM HEI distributor, the engine can be stalled by grounding the tach lead. This happens in automotive applications when the tachometer fails by shorting to...
  9. J

    Shift interrupter operation and adjustment after restoration

    "start moving the shifter into neutral there is resistance from the engaged shift dogs that prevents them from coming out of gear. The outer sheath of the lower shift cable is attracted to the Y shaped spring loaded bracket" This might be where I went wrong. Shift cable and outer sheath are...
  10. J

    Shift interrupter operation and adjustment after restoration

    I don't understand. Wouldn't the cables move the same way? I do not have a way to test this unless I'm solo at a small local reservior with high winds and a single lane ramp. It is critical that i not eff this up since i cannot recover it alone.
  11. J

    Shift interrupter operation and adjustment after restoration

    This boat has been completely reconstructed except for the stingers and a few bulkheads. The block was cracked, interior falling apart, gelcoat faded. My son is an active-duty Marine who asked to use the boat at his base in Arizona 2 years ago, and then was deployed in joint-ops with a...
  12. J

    Shift interrupter operation and adjustment after restoration

    I have followed many build threads and searched everywhere for answers to this question. Background: 1989 Maxum 20' open bow - 5.0 Alpha 1 Gen 1 230 hp s/n 0449447 This boat was our family vacation for 15 years, and that sentimental value has overridden the expense of the resto-mod. My...
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