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bluthndr

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What's it take to get a Hallet bubble deck into the 90s?
« on: July 12, 2024, 08:51:38 PM »
What's it take?  How much HP,?  What kind of pump work?  I assume pump has to be set back further as well.
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  • Boat #1: 1975 Hallett Bubble Deck
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1975 Hallett, Olds 455, Berkeley 12JC, place diverter

mash on it

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Re: What's it take to get a Hallet bubble deck into the 90s?
« Reply #1 on: July 14, 2024, 10:47:00 AM »
Quote from: bluthndr on July 12, 2024, 08:51:38 PM
What's it take?  How much HP,?  What kind of pump work?  I assume pump has to be set back further as well.

There's a few here.
Brads comes to mind. CJ888.
Liberty hull? I don't remember. (Probably more efficient than a Hallett?)
750+ HP. BBF tunnel ram.
Blueprinted bottom.
Blueprinted pump.
Single seat. No extras.
Runs mid 90s. In racing conditions.
So the answer is cubic dollars.
Pallets of cash.
I've been 86 mph for a short sprint. Plenty fast for this old man.
Best mine has seen was 71.8.
A little over 500 HP.

Dan'l
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CJ/RR 212...under construction  "Pistol Annie"

TrollerDave

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Re: What's it take to get a Hallet bubble deck into the 90s?
« Reply #2 on: August 23, 2024, 09:31:53 PM »
Quote from: bluthndr on July 12, 2024, 08:51:38 PM
What's it take?  How much HP,?  What kind of pump work?  I assume pump has to be set back further as well.

There have been a few Hallets on the boat forums that have been into the 90?s. Like Mash on it said, about 750hp and some good pump work. The couple that I can think of, both had big Fords. Weight and an uneven bottom make a jet boat less efficient = less speed.
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