1988 Hallett bravo one
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1988 Hallett bravo one

  1. #1
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    Default 1988 Hallett bravo one

    I'm looking at purchasing a 1988 Hallett Vector 21'
    it has a 454 stock as stock can get but very clean
    and a mercruiser bravo one out drive with some sort of aftermarket stainless prop
    its a single owner boat and very clean with 190 hours on it
    my Question is
    is it a worthy hull ?
    what can a bravo one handle in reality "speed and power" and is it reliable ?
    i plan to do some engine upgrades someday after i actually get it out and run it some and see what it needs
    I mostly run havasu the colorado river and lake Mohave I have had 2 jetboats in the past so this will be my first prop
    any and ALL advice is appreciated

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    Senior Member Trigger's Avatar
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    I currently have an '88 vector with 509bbc/ bravo 1 and love it!!! I personally have never been in any other 21' boat that rode anything close to my Hallett. The bravo 1 will probably handle most anything you'll ask it to do with it being a smaller/lighter boat. I've gotten a lot of great advice and help with mine on here and it sounds like you probably have a lot of the same questions I did. I say buy it, you won't regret it.
    Last edited by Trigger; 07-11-2015 at 09:43 AM.

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    Thanks a lot just what I wanted to hear I'm just nervous about this whole I/O deal cause I know they are realllly expensive to fix sometimes
    Otherwise you really like the boat huh? Any quirks or is it just I general a great hull?
    Any idea on the speed I'll be able to get out of it someday ?

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Tylert123 View Post
    Thanks a lot just what I wanted to hear I'm just nervous about this whole I/O deal cause I know they are realllly expensive to fix sometimes
    Otherwise you really like the boat huh? Any quirks or is it just I general a great hull?
    Any idea on the speed I'll be able to get out of it someday ?
    Speed will depend on what power you put in it. Stock Bravo drive is probably good to 600 hp if you don't launch it hard out of the hole, nor fly it out of the water without getting out of the throttle. Depending on the setup of the boat, they can go pretty fast. Last weekend I drove one around Parker for my friend who wanted to be able to drink. Many years ago I had rebuilt a turbo engine for one of the boat's previous owners, but it's been converted back to just a normally aspirated engine. I pulled a skier up to 60 mph or so without wringing it all the way out. Skier wanted to go faster, and normally could, but he had been drinking and I didn't want to have him pile up while I was driving.

    One of the big killers on those drives is engine idle above 800 rpm. They don't like going into gear higher than that.

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    I ended up buying an even nicer 87 vector 21 130 hours on the stock 454 mercruiser and an alpha
    what's the skinny on this drive ? Is it any good or should I be looking for a replacement ?

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    Start looking for a replacement. Alpha's were generally only for small blocks, Bravo's were used for Big Blocks. Any kind of upgrades and the Alpha won't last long

    The Vector should be a great hull. My Dad and Uncle have matching 210 Halletts which are similar to the Vector and they ride like a dram and run great. I would have bought TylerT's Vector if my boat hadn't fallen into my lap when the time was right.

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    Isn't swapping a drive a lot of work ? fiberglass and such ?
    and bought my boat ?

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    Senior Member 77charger's Avatar
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    Any big block you are going to want the bravo.Yes the alpha will work but its life span will be short.You just wont know when it will go.

    NOw if a mild small bock you can make an alpha live but their best suited for under 300hp with small block torque.

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    So a bravo one will last then ?

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    So why the hell does this boat have an alpha then ?!its a hallett they don't cheap out on stuff I guess it doesn't make sense to me haha

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    Junior Member 3-stroker's Avatar
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    Quote Originally Posted by Tylert123 View Post
    So why the hell does this boat have an alpha then ?!its a hallett they don't cheap out on stuff I guess it doesn't make sense to me haha
    They did that for a year or two before the bravo was launched. drive it easy it will be ok for a while
    Live like you were dying...

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    lurker oldtoys's Avatar
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    My buddy has had his 88 Vector for about 20 years. His alpha has some interal upgrades and holds up fine with 400ish horsepower. Driving habits will determine longevity. Vectors are badass! Enjoy!

  15. #13
    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Tylert123 View Post
    I ended up buying an even nicer 87 vector 21 130 hours on the stock 454 mercruiser and an alpha
    what's the skinny on this drive ? Is it any good or should I be looking for a replacement ?
    Quote Originally Posted by Tylert123 View Post
    So why the hell does this boat have an alpha then ?!its a hallett they don't cheap out on stuff I guess it doesn't make sense to me haha
    Quote Originally Posted by 3-stroker View Post
    They did that for a year or two before the bravo was launched. drive it easy it will be ok for a while
    I was forced to do some research on this last week, when a friend asked for some help with his '87 Vector with the 415 HP 454 and Alpha. We were trouble shooting the carb on the water, tied to a dock, out of gear, and somehow the drive managed to engage reverse and snap the shaft. I called a couple of people to ask how the heck that could have even happened, and was told Merc tried that package for a couple of years until they had too many problems with the drives. We got lucky and found a used drive that was on the boat the next day so his vacation was not ruined.

  16. #14
    It's what we do BDMarine's Avatar
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    Quote Originally Posted by Tylert123 View Post
    So why the hell does this boat have an alpha then ?!its a hallett they don't cheap out on stuff I guess it doesn't make sense to me haha
    The Bravo One wasn't made until late 1988. I don't think it was available until 1989. As Barry said, the 454 "MAG" Alpha One package was only used for 2 years before the Bravo One was introduced. The term MAG on that engine has always been misleading as it is the 330 HP engine that would be compared to the lower performance 7.4 introduced in late '88.
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