A little tahiti help please
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A little tahiti help please

  1. #1

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    Default A little tahiti help please

    Hello all. Man am I happy I found this site. Ive been reading for about two days now and figured I introduce myself. My name is mike and I own a 78 tahiti jet. Since buying it ive done a few upgrades such as interior, msd ignition (HEI Blows) Holley carb, edelbrock intake and 100 shot of nos. Unfortunately I have found some dry soft spots in the floor. I definitely donít feel like getting a new boat since Iíve grown quite attached to mine. I just have a few questions before I start. One is it worth going full stringer for my hull? Should I set back the pump for future modifications? I donít plan on going mush over 500hp. After all its only a Tahiti and I think much more would just be a waste of money in this hall and its lake use to me.

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    Default Floor?

    Isn't that a "false floor" hull......Just cut out the damaged area and re do it with marine plywood and fiberglass. DON'T cut too deep and damage the actual hull. I have an "older" Tahiti, 1969, and it is not a full stringer hull but it is still tough as nails............As far as the other mods, remember what the boat was built for. If you want a weekend screamer buy a tunnel hull jet, or a V drive flattie, and you won't need the mods....I always advise people to KEEP what they have for fun, and build another for speed......Sure keeps you off the beach watching others having fun when the "rocket" breaks, and it will, guaranteed....Ray
    LOUD BOATS SAVE LIVES

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    im sorry, i left out some details. upon pulling out the floor i found that my seat boxes were all soft as well. pretty much my boat is all yanked apart now and waiting to be fixed and put back together. i understand not building it for racing but i figured 500hp would be dependable. I only asked about setting back the pump to see if it would help. i know its not easy to do but i have the time to do it if it will help pick up a few mph. thanks for you imput and help ray

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    Default 330 vs 500 HP

    Quote Originally Posted by CaTahiti View Post
    im sorry, i left out some details. upon pulling out the floor i found that my seat boxes were all soft as well. pretty much my boat is all yanked apart now and waiting to be fixed and put back together. i understand not building it for racing but i figured 500hp would be dependable. I only asked about setting back the pump to see if it would help. i know its not easy to do but i have the time to do it if it will help pick up a few mph. thanks for you imput and help ray
    Dependable 500 HP isn't as easy as it sounds. A jet boat is the toughest thing I know of on an engine. I reiterate what I said about a second boat for going fast..after you have your "pleasure" boat all dialed in...and dependable....Ray
    LOUD BOATS SAVE LIVES

  7. #5
    Senior Member jetboatperformance's Avatar
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    Default

    CA Tahiti Welcome to the PB boards ! Tom

  8. #6

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    thanks man. Looks like i might have to stop buy your shop next time i go riding in pismo. Ill be needing my pump gone over maybe machined for a ride plate if i move my pump.

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    Senior Member slotracer's Avatar
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    welcome to the boards. where are you at and how about some pictures?
    slot
    87 eliminator
    next boat ??????????????
    new owner of the redneck yacht club
    Stockton, ca.

  10. #8
    Senior Member TahitiRat's Avatar
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    Default

    I was thinking of seting the pump back it my Tahiti. My thoughts on why are not for speed its for effiancy I think that 70 is a good speed for the boat so that is what I am shooting for but since there are going to be alot of speed left if I just build a motor that will push the boat to 70, I thought if I made the hull a efficant as I can then build the motor to get 70, then I will get the most for my money. If the boat will do 70 with 400 hp instead of 500 hp then I dont spend the money buildin the bigger engine, also try to use less fuel maybe run reguler unleaded and run longer on a tank of fuel. Also the fun of gaining new skills and doing the work. And pride of doing what I set out to do, also the setback pumps look cool. I dont know just what I think.

  11. #9
    Senior Member tahitijet's Avatar
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    Quote Originally Posted by CaTahiti View Post
    I own a 78 tahiti jet.

    I just have a few questions before I start. One is it worth going full stringer for my hull? Should I set back the pump for future modifications? I donít plan on going mush over 500hp. After all its only a Tahiti and I think much more would just be a waste of money in this hall and its lake use to me.
    I have the same boat. it's basicly a southwind splash. I had the same rot issues except mine was the floor, stringers, and transom, I went to full stringer and ditched the seat boxes. I reasearched a ton when i did mine and every single person considered to be a "pro" in the industry suggested the boat would definatly benefit from a setback and a shoe. So I set mine back and blueprinted the bottom while i was at it. I run a good amount of HP over 500 and it's holding up good.

    Quote Originally Posted by Moneypit View Post
    Isn't that a "false floor" hull......Just cut out the damaged area and re do it with marine plywood and fiberglass. DON'T cut too deep and damage the actual hull. I have an "older" Tahiti, 1969, and it is not a full stringer hull but it is still tough as nails............As far as the other mods, remember what the boat was built for. If you want a weekend screamer buy a tunnel hull jet, or a V drive flattie, and you won't need the mods....I always advise people to KEEP what they have for fun, and build another for speed......Sure keeps you off the beach watching others having fun when the "rocket" breaks, and it will, guaranteed....Ray
    good advice. After all the time and money i have in mine I would not do it agian. I could have turned faster numbers with less money in a better hull to start.

  12. #10
    Senior Member TrollerDave's Avatar
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    Quote Originally Posted by tahitijet View Post
    I went to full stringer and ditched the seat boxes. I reasearched a ton when i did mine and every single person considered to be a "pro" in the industry suggested the boat would definatly benefit from a setback and a shoe. So I set mine back and blueprinted the bottom while i was at it. I run a good amount of HP over 500 and it's holding up good.
    How big of a difference did you see/notice? Quicker, faster, better ride?

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