1972 16' tahiti
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1972 16' tahiti

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    Default 1972 16' tahiti

    Hello everyone, what do yall think of this boat? My father in law gave it to me last week and i dont know nada about boats, haha. It will be a fun project. It's a 16' 1972 Tahiti with the olds 455. As far as i know it's in great condition and runs solid. has a berkeley 12 JC-A pump. Not really looking to build a very fast boat, from what i understand this isnt the settup for it, but a all around fun boat. Needs some tune-up type work but nothing major for now. Anyway, just want to get to know everyone here and any information i can get would be greatly appreciated. As i start to tear stuff apart i'm sure i'll have more questions to ask. thanks for everyones time
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    jetboataholic HawaiianJet's Avatar
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    Quote Originally Posted by 16' tahiti View Post
    Hello everyone, what do yall think of this boat? My father in law gave it to me last week and i dont know nada about boats, haha. It will be a fun project. It's a 16' 1972 Tahiti with the olds 455. As far as i know it's in great condition and runs solid. has a berkeley 12 JC-A pump. Not really looking to build a very fast boat, from what i understand this isnt the settup for it, but a all around fun boat. Needs some tune-up type work but nothing major for now. Anyway, just want to get to know everyone here and any information i can get would be greatly appreciated. As i start to tear stuff apart i'm sure i'll have more questions to ask. thanks for everyones time
    Looks like a pretty good little boat. You called it a "project", so I must ask. What are your plans for it? Are you going to keep the 455?
    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

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    Just looking to clean it up some. Father in law wasnt to mechanically savvy so there are some things that are jerry rigged. To keep it going this season i'll just replace water lines, rebuild the holley carb, plugs, wires that kind of stuff. But this winter i want to pull some stuff off to get chromed and powder coated and rebuild the jet pump. So far my plans are to keep the same motor untill it blows up. What's your opinion on the olds 455? Eventually get it painted a different color and make the interior a little more eye friendly.

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    jetboataholic HawaiianJet's Avatar
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    Quote Originally Posted by 16' tahiti View Post
    Just looking to clean it up some. Father in law wasnt to mechanically savvy so there are some things that are jerry rigged. To keep it going this season i'll just replace water lines, rebuild the holley carb, plugs, wires that kind of stuff. But this winter i want to pull some stuff off to get chromed and powder coated and rebuild the jet pump. So far my plans are to keep the same motor untill it blows up. What's your opinion on the olds 455? Eventually get it painted a different color and make the interior a little more eye friendly.
    I've never owned an olds, so I don't know anything about them by experience. But, I've heard too many horror stories about them to be a big fan. But, I've also heard a lot of good things about them too, mostly related to how reliable they are, after all the usual oiling problems are fixed of course.

    Good luck.
    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

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    Sit N' Spin Jetaholic's Avatar
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    It all depends on what you plan on doing with the boat. If you're only gonna use it as a family cruiser/ski boat, the Olds is just fine. The problem with the Olds is when you try to spin them up above 5,000 RPMs. They were never designed as a high RPM engine and they need all kinds of oiling mods to be able to withstand high RPM duty. So if you plan on wanting any kind of top speed out of it, costwise Chevy is the way to go. Part sources are abundant, making them cheap, plus they're some of the easiest motors to build.

    If there's 1 ignition upgrade that should be done...INVEST IN A REV LIMITER!!! I cannot stress this enough. If the pump unloads on you without a limiter you will over rev the engine and you can kiss it goodbye. A friend of mine a few weekends ago was in some rough water, and his pump unloaded and the RPM shot past 7,000 and he spun a bearing. Upon trying to limp it back at 1,500 RPM, the rod was ripped from the piston and the rod cap let go. The crank threw the rod right into the adjacent cylinder, trashing the block...all because he didn't have a limiter on it. I've had the pump unload on me at speed before and thank God I had installed a rev limiter.

    Good call on rebuilding the pump BTW. Lots of these boats have 30+ year old pumps in them that have never been gone through. By rebuilding the pump you tighten up the clearances around the impeller (pretty much all of us set them up much tighter than stock) which makes the pump much more efficient. This will improve holeshot greatly, which will help you be able to pull skiiers up a lot better without the pump slipping.

    Good luck on your quest.

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    Member bennyb's Avatar
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    It's a desease this thing we call boating. it will consume you.
    I had an olds in a v-drive and it was ok but plan ahead and buy a 454.
    keep the olds 4500 and under and it will last forever.
    Welcome to the boards
    20'5 Advantage classic cruiser
    Go on get your ass outa here

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    jetboataholic HawaiianJet's Avatar
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    Quote Originally Posted by Jetaholic View Post
    It all depends on what you plan on doing with the boat. If you're only gonna use it as a family cruiser/ski boat, the Olds is just fine. The problem with the Olds is when you try to spin them up above 5,000 RPMs. They were never designed as a high RPM engine and they need all kinds of oiling mods to be able to withstand high RPM duty. So if you plan on wanting any kind of top speed out of it, costwise Chevy is the way to go. Part sources are abundant, making them cheap, plus they're some of the easiest motors to build.

    If there's 1 ignition upgrade that should be done...INVEST IN A REV LIMITER!!! I cannot stress this enough. If the pump unloads on you without a limiter you will over rev the engine and you can kiss it goodbye. A friend of mine a few weekends ago was in some rough water, and his pump unloaded and the RPM shot past 7,000 and he spun a bearing. Upon trying to limp it back at 1,500 RPM, the rod was ripped from the piston and the rod cap let go. The crank threw the rod right into the adjacent cylinder, trashing the block...all because he didn't have a limiter on it. I've had the pump unload on me at speed before and thank God I had installed a rev limiter.

    Good call on rebuilding the pump BTW. Lots of these boats have 30+ year old pumps in them that have never been gone through. By rebuilding the pump you tighten up the clearances around the impeller (pretty much all of us set them up much tighter than stock) which makes the pump much more efficient. This will improve holeshot greatly, which will help you be able to pull skiiers up a lot better without the pump slipping.

    Good luck on your quest.
    Yes, very good advice here. Just think of a rev limiter as cheap insurance for your motor. I bought one for mine because if I blow my motor up, then I'm done for quite awhile because I don't have the money to build a new one.

    Here is a link to the one that I bought and installed on my boat. You'll have to buy pills for it for the lower rpm range because it only comes with 6000, 7000, and 8000 rpm pills.
    MSD REV LIMITER
    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

  10. #8
    Senior Member jetboatperformance's Avatar
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    Welcome to the boards and the world of jet boats Thats the very boat that got me interested many years ago ,fun time great memories We've restored (and partially retsored) a couple over the years Good luck with the project !! Tom

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    Welcome to the boards!! There's some great advice here, if it wasn't for some of these guys I would have been screwed when I re-rigged my boat. Check out past forums by searching for keywords and you'll learn from the mistakes of others. Cool looking little boat too. Good luck!!
    Quote Originally Posted by HawaiianJet View Post
    You done got my kentucky ass all confused!!!

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    Golf anyone? How bout 19 holes???


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    Senior Member 71kona's Avatar
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    how do you put the picture up like that?
    this boat will be the death of me

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    Senior Member old rigger's Avatar
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    Quote Originally Posted by 16' tahiti View Post
    Just looking to clean it up some. Father in law wasnt to mechanically savvy so there are some things that are jerry rigged. To keep it going this season i'll just replace water lines, rebuild the holley carb, plugs, wires that kind of stuff. But this winter i want to pull some stuff off to get chromed and powder coated and rebuild the jet pump. So far my plans are to keep the same motor untill it blows up. What's your opinion on the olds 455? Eventually get it painted a different color and make the interior a little more eye friendly.
    In stock form, you can't beat the Olds/berk combo for a nice family ski boat. Gobs of tourque and reliable as a rock. We sold a ton of them at Tahiti, more than the BBC and BBF combined in the early 70s. Leave it stock and enjoy it. The poor bastard has lived there for 36 years doing it's job, why mess with a good thing?

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    Quote Originally Posted by 71kona View Post
    how do you put the picture up like that?
    How to post an image: (Run Time 2:56)
    http://www.performanceboats.com/tuto...ums/postImage/

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    Thanks for all the opinions everyone!!

    I'm not quite sure if all the oil mods have been done to the motor. Talking with my father in law he didnt know anything about it, but he did say that he never remembers revving past 4500 so thats a good thing. But it sounds like a rev limiter is definately a great idea. Should it be set at 5000 or 5500? what do yall think. Did these 455 olds come stock with the points style distributor?

    Jetboatperformance that pic of your boat is exactly what i'm thinkin for my boat, just a clean solid great looking little boat is what i'm after.thx for sharing.

    Toolbox, are you refering to the clean look of the indoor/outdoor carpet? haha yeah that wont last long but he didnt do a bad job. it'll work for now.

    Old rigger, i agree with you. Would you happen to know what model this is? I've heard your the tahiti guru. i cant find it anywhere on the boat. there is a small nameplate on the passenger side thats kindof faded which states the weight, capacity etc. Also says molding, assembly, and rigging what do these refer to?


    Thanks again for all the great knowledge!!! Hope to hear from everyone soon!!

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