Want Eliminator 454 Jet boat to go faster
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Want Eliminator 454 Jet boat to go faster

  1. #1
    Junior Member
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    Default Want Eliminator 454 Jet boat to go faster

    I recently bought a mint condition 1987 Eliminator 20.5 ft jet boat. It has a 454 indmar engine with msd ignition. I believe it is the ho model. It has the Dominanator mb12s jet pump. I'm only seeing 50mph, and thought I should be seeing much more. If you put it to the floor from a idle within 1/2 second it's at 5000 rpm and stays there. Loaded with 8 people I get 46-4750 rpm. I want to see 60mph with me and a few people, which its at 50mph with a few people. So looking to gain 10mph. Any help would be appreciated

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  3. #2
    Just Me snoc653's Avatar
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    Sonds like everything is working the way it should. Pump could be a little loose but I don't think so. It sounds like you need more power. My 21 Rivierra spins about 4650 and tops out at 55. It has about 425up to get there. Empty you're probably right about there too.

    The pump builds pressure as the rpms increase. Your engine stops at 4500 - 4700 because it runs out of umpf.

    BTW you might get more help in the jet boat section.
    Last edited by snoc653; 07-18-2016 at 08:29 PM.
    So many projects, so little time

  4. #3
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    Is there a way to move to the jet boat section or should I just start a new thread there?

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  6. #4
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    Moved to jet boats section...

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