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Did He Break It? Diagnosing And Testing Finnegan’s 711 Cubic Inch Twin Turbo Jet Boat.


Did He Break It? Diagnosing And Testing Finnegan’s 711 Cubic Inch Twin Turbo Jet Boat.

We’ve been talking about Finnegan’s 711 Cubic Inch Hemi Headed Chevrolet Twin Turbo jet boat for a while now, and this sucker has finally been hitting the water recently for some tuning and fun. Or at least that was the plan. Unfortunately the plan has changed because this big bastard has been unhappy on the water despite Mike and Dave’s best efforts and can do attitude. So what is it going to take to make this thing whole again? Well that’s a valid question, and one that Mike aims to answer in this video. There is a lot of diagnosis and investigation going on here, because this engine is no joke and WAY expensive so it wouldn’t be smart to just roll the dice with no investigation as to what might be wrong. But will the fix result in a boat that hauls ass? We certainly hope so, because this is one awesome jet boat that we can’t get enough of. We’re jealous as hell of the time that Dave and Mike are spending on the lake by the way. If I had something that floated I’d be heading to the lake myself, that’s for sure.

Maybe I’ll go start shopping for a boat.

Watch what Mike and Dave have been going through trying to make this beast a hot rod.


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7 thoughts on “Did He Break It? Diagnosing And Testing Finnegan’s 711 Cubic Inch Twin Turbo Jet Boat.

  1. john

    The old axiom ” hitting water at speed is like concrete ” ….and yet you choose not to wear a helmet?

  2. eric olson

    Just noticed this….. How come passenger and fishing boats are controlled from the right hand side? Almost like they were invented by the Australians.

    1. eric olson

      I might have formlated a logical answer, but I’ll let others chime in with their thoughts.

  3. Scott Y

    The jet drive on that boat has a pressure release on it that is controlled by a switch on the steering wheel. From watching the video it looks like Mike hit that at the end of the run. It will slow the boat down.

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