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sport jet in a mini????

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sport jet in a mini????

Postby Apfeiffer82 » Wed Nov 29, 2017 12:23 pm

im just getting started on my mini project and pretty new to the whole mini thing but i was curious why i have'nt seen any sport jets in the mini's? is it a weight thing? i was thinking i could maybe gain some floor space with a sport jet? what are your guys thoughts? thanks
2011 20’ Koffler
350/3 stage
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Re: sport jet in a mini????

Postby theduke » Wed Nov 29, 2017 7:57 pm

Well..
There is a member doing one...its 110hp.

When you say Sport Jet ...its a ? with many answers.

The 1st version was a 90 hp 3 cyl. Force ( F'ed over rebuilt chrysler engine) vintage1991 ish
next was the 110 hp...I know little about it but was a touch better.

iirc there was a 140hp....not sure.

Mine is a 2000 vintage and Mercury V6, 175hp

There were several since then 220,240& a 250 briefly......going on memory here & its cloudy.

Then theres the Optimax or whatever is out now.


In short...Which Sport Jet are you thinking of useing?

Here is the one currently being built

viewtopic.php?f=69&t=21313
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Re: sport jet in a mini????

Postby speny » Wed Nov 29, 2017 8:27 pm

I thought the same thing when i built mine. in comparison to watercraft engine

Pros:
don't have to build/buy suction line
Pretty plug and play
warranty, even if you have a brand new jetski i'm pretty sure warranty goes out the window when you gut it and turn it into a jetboat
no lining up pump and engine with shims

Cons:
Heavier, sportjet is 370lbs dry including pump and reverse bucket
Expensive(to buy new)!! I got a price of 12k CDN
Tall, check out even a 17' boat, they have a giant hump in the engine cover to clear the motor
Burns oil, only a con if you have a 4stroke watercraft, if go with 2stroke then its the same either way
poor efficiency drive, jet drives are bad but the 90 degree gear case eats power
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Re: sport jet in a mini????

Postby Apfeiffer82 » Wed Nov 29, 2017 8:52 pm

Thanks for the reply’s! I was thinking 175

But mine also will be mini- ish I woukd like to build a 13’

I guess I could be ok if the motor house had a slight hump or maybe a little taller sides
2011 20’ Koffler
350/3 stage
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Re: sport jet in a mini????

Postby fishbum » Sat Dec 02, 2017 7:16 am

The 175 is a bit easier than the others. Exhaust goes down through pump so don't have to build it into boat.
I have a good used unit for sale in sail section on here
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Re: sport jet in a mini????

Postby Ridextreme » Sun Dec 03, 2017 12:40 am

I have built a few minis and I also wanted the room the sport jet offered. The sport jet is a very easy install. Practically a plug n play. My alumaweld was running a 175 never had a problem with it and always fired right up. I wanted an all purpose little fishing boat for the rivers and lakes . No need for monster engines. Usually am just trolling . Kept the boat nice and light . The 110 is not oil injected the weak spot in these engines was not invented yet .boat is looking great so far. Will post new photos soon . Almost done paint job just a couple little pieces left . Would love to test drive before Christmas but that might not happen.
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Re: sport jet in a mini????

Postby Ridextreme » Sun May 27, 2018 3:59 pm

So it's done
20180526_145606_800x600_1600x1200.jpg
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Re: sport jet in a mini????

Postby jetboatwanabe » Tue May 29, 2018 10:25 pm

good looking boat sir!! do you have any video of it running?? :Drink1: :bash:
:chicken:
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Re: sport jet in a mini????

Postby Ridextreme » Wed May 30, 2018 4:37 pm

Yes I do but I can't upload it. Can always email you a video if your curious . I tried but I'm not that tech savvy.
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Re: sport jet in a mini????

Postby Darth T8r » Thu Jun 21, 2018 4:07 pm

Doesn't the 175 exhaust exit through the jet? (less plumbing = easier install)

Lately I've seen neglected fiberglass boats with a 175 for as little as a couple grand.
(Seems like the value plummets when the seat cushions get ugly.)

Thought about buying one and a stack of sawzall blades. :-)

There's a 200 optimax in my area they're asking $2500 for, but it's in disorganized pieces on a pallet. What should something like that go for? I'm a bit sceptical without a video of it running, and knowing who did the tear-down. I'd rather have a running donor and do the extraction myself.
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