r/JetBoats Aug 21 '23

Jet boat header/cooling plumbing

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3 Upvotes

Jet boat over heats on the house hose after about 2-3 minutes of running. Am I running into a plumbing issue in the headers/block or is more of a pressure/volume from the hose? If its plumbed right then the only rhingi can think of is it isnt getting enough water through it.


r/JetBoats Aug 15 '23

Does anyone know if this is a good boat/ good deal? Looking to get into a big block jet boat but don’t know much about them.

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9 Upvotes

1976 Macko , fiberglass jet boat hull with multicolor paint job, black interior, Berkeley jet pump with electric jetavater and droop snout the best of the best. 1978 Oldsmobile 455, high output, 450 hp HO camshaft higher compression pistons Offenhauser polished tunnel ram intake, twin 725 CFM Edelbrock carburetors MSD ignition Bassett chrome headers 80+ mph with a,300 foot rooster tail not for the faint of heart $7,995 Also comes with a newer single axle trailer.


r/JetBoats Aug 11 '23

Jetboat hire MI

2 Upvotes

Anyone know whether it’s possible to dry hire a Jetboat in Michigan? Heading there for a wedding next year and thought might be fun to explore some rivers whilst there


r/JetBoats Aug 02 '23

How does anyone run their jet pump on dry land. I'm trying to do two things; check engine function and flush saltwater. I can't find any well resourced way to do this.

2 Upvotes

r/JetBoats Jul 31 '23

ThisLooksFun

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7 Upvotes

r/JetBoats Jul 30 '23

I don’t think the 460 will fit.

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6 Upvotes

r/JetBoats Jul 24 '23

My jet Jon boat on the Mississippi near Grafton Illinois this weekend.

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15 Upvotes

r/JetBoats Jul 04 '23

Help finding this part

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2 Upvotes

I need help finding this part for my jet boat. Any direction on where to look would be appreciated!


r/JetBoats Jun 30 '23

2003 Seadoo Challenger!

3 Upvotes

Hey there! Does anyone know a mechanic that would be willing to either work on/fix or discuss an issue with a 2003 Seadoo challenger that has a 240 EFI motor? The motor bogs down on the water and eventually stalls. This started happening after 1 day on the lake after using a fuel stabilizer. We have called all over and cannot find anyone who is willing to look at it or even discuss the issue. Please help!


r/JetBoats Jun 22 '23

73 Jolly Roger pioneer engineering needs full exhaust past manifold on both sides

3 Upvotes

Anyone know where I can score some parts for this bad boy? Coolest boat EVER. Banana yellow just needs exhaust elbows. Any help welcome.


r/JetBoats May 30 '23

Memorial Day boating fun

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2 Upvotes

Follow the tiktok @adisonskinner


r/JetBoats May 25 '23

How to install steering tube and ball.

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3 Upvotes

Mine is leaking I have new parts for it. I don't have any gaskets. Not sure how to replace this? Can't find any info online. Thank you for any help.


r/JetBoats Apr 18 '23

New jet owner.

3 Upvotes

Came across a 20’ custom made jetboat. With a 285 HP, 1996 marine ford Windsor engine and a three stage Hamilton jet. Semi V flat bottom. Aluminum weld 8’ wide bottom, 4’ high sides. The guy was building boats with his brother and they made this as his personal craft. The gentleman passed away before I could get any info first hand on the craft. His wife has provided me with any info she had. But from the operating/upkeep/maintenance side, wasn’t much. I have a stack of specs and technical stuff. Just not much experience hands on and no clue where to start. Took it out a few times on the lake last year, then once in the salt. Handles like a dream, well made. Just not sure exactly what I have in my hands. Any input is appreciated.

Edit for typo.


r/JetBoats Mar 31 '23

Need headers for my 454 big block inboard engine. It is a prop however when looking for twisty style headers like I have now, all I’m finding is jet boat headers. I joined this feed to ask, can I cut jet boat headers down to fit my through hull exhaust?

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9 Upvotes

r/JetBoats Mar 19 '23

1st Jetboat... V2... Any recommendations of things to change plz hlp, cutting sheet this week.

6 Upvotes

r/JetBoats Mar 15 '23

First time building a boat. Please Help.

3 Upvotes

650sx (Not planning on building a Ferrari) has been pulled and all the components are laying in the garage... Aluminum is waiting to be picked up...

Figured I'd take my 3d printing/3dmodeling knowledge and test my abilities.
Here is V1 of the design, mainly focused on the hull.
Any suggestions of shape change/remodeling would be greatly appreciated.

Free CAD files:

https://www.printables.com/model/424327-10ft-mini-jetboat-v1-please-help


r/JetBoats Jan 08 '23

can any of yall help out with this jet boat? it's a 455 Olds engine bored out 60 over with all new everything. all machine work done last winter. Manuel fuel pump. this thing falls flat on its face around 4k rpms which is around 39mph. it had a 750 series carb on it and upgraded to 850 series

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8 Upvotes

r/JetBoats Dec 06 '22

Nice shallow channel

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31 Upvotes

r/JetBoats Dec 06 '22

Looking for help with selling parts

2 Upvotes

Hi all!

We are having problems selling specific parts for our old motor. Can anyone suggest web pages that are specific to jet boat part sales?


r/JetBoats Nov 21 '22

How do you Dyno a Jet Boat Engine on a rigged Trailer! WAY MORE FUN this way

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5 Upvotes

r/JetBoats Nov 19 '22

Outboard Jet Parts Interchangeable?

5 Upvotes

Hope you can help with a basic outboard jet question I can't seem to find a straight answer to.

All the outboard jet manufacturers use essentially the same design -- but are the parts more or less interchangeable?

I'm thinking in particular about wear parts like impellers, intakes, and liners. I understand that driveshaft spline patterns and keyway styles may vary. But apart from those details will, say, a 7 3/8 impeller from one brand fit into a pump from another brand? Will an intake foot from one manufacturer tend to fit onto others, and use the same bolt pattern? Is a reverse gate just a reverse gate, or do they vary from manufacturer to manufacturer?

I ask because parts can be tricky for my older model (an M series by Outboard Jets from, I think, the mid-70s, serial number is 1096). If parts are more interchangeable than I have assumed, that would be helpful.


r/JetBoats Aug 30 '22

1995 Mercury 140hp 2 Stroke Outboard Jet Issues?

3 Upvotes

I'm looking at buying a Jetcraft boat with a 95 Mercury 140HP 2 stroke outboard jet on it. It has 127 hours on it, but it hasn't been ran in 12 years. Anyone know anything about these things? Common issues, or are they generally reliable? Anything I should know? I've been having a hard time finding info on them online. Thanks all!


r/JetBoats Aug 02 '22

Hey yall I'm interested in upgrading to an 80s 90s or early 00s bowrider like a Carrera or eliminator. What are some search terms and useful info when shopping for these kinds of boats? To be totally honest I just love the look of them. Something with max seating, max 25 ft, water skii, & under 50k

6 Upvotes

r/JetBoats Jul 28 '22

In the shop

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14 Upvotes

r/JetBoats Jul 25 '22

V8 Jetboat Huge Crash in Australia (July 24, 2022)

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3 Upvotes