Moderated Discussion Areas
ContinuousWave: Whaler Performance
Jet Drive Outboards
|Author||Topic: Jet Drive Outboards|
posted 05-04-2009 01:47 PM ET (US)
In the ever search for powering and repowering my boat, I keep coming up with jet drive outboards every so often. Tell me about them. I see being a bit safer but looks like the suction unit is on the bottom and would pull in crud in the shallows. Milage may be less? Kind of neat in a way. erick
posted 05-04-2009 01:55 PM ET (US)
Expensive and inefficient. Yes they will suck in crud in shallow water. These are great for shallow rivers or places with rocks but you need a V6 to give you V4 performance so cost is high to buy and run. If you convert a 90-HP to a jet it will then be comparable to a 60-HP with a prop. I agree that they are neat and I would love to own one but probably sell it after a couple weeks.
posted 05-04-2009 02:15 PM ET (US)
Thanks for the reply. That is what I figured; still a neat idea.
posted 05-05-2009 03:35 PM ET (US)
Those motors were developed to run Western rivers. You lose 30% of HP w/ the pump. They suck in just about everything - some dudes use them in lakes etc. When I lived around them, never owned one, they were fantastic and reliable. Back then Mercury ruled for the most part. The old timers used to run rivers with outboards with props. Someone fabricated a device called or referred to as the Jack Ass Up Lifter. As the story goes they'd run the prop as far as they dared and push down on some big lever to jerk the motor out of the water before the prop shredded. As the story goes, Glen Wooldridge on the Rogue in S Oregon was part or all of the reason the jet pump was developed. I've read an engineer from Cali named Dick Stallman worked with Glen and his pals on the outboard jet pump. Rich history, very cool
posted 05-07-2009 11:37 AM ET (US)
An alternative: Durajet
www.actorlando.com and premiermarine.com
No exposed prop...full no power-loss through a jet-drive
posted 05-07-2009 01:28 PM ET (US)
That Dura Jet looks really cool! Looks like they only due little motors not a 150hp!
posted 05-07-2009 01:57 PM ET (US)
Mine is a 25hp Johnson (1995) refurb'd in December '08. For sale BTW...
posted 05-07-2009 05:10 PM ET (US)
That durajet is the same set up the E-Tec Multi Fuel Engine (MFE) is using. When I saw it at the Miami Show in 08 the performance loss is supposed to be much less than a standard jet pump set up.
posted 05-08-2009 01:21 AM ET (US)
Jeff--Thanks for the nice digital images you provided from your visit to the Miami International Boat Show in 2008.
I have to say--in complete honesty--that E-TEC jet drive looks absolutely fantastic. That E-TEC jet drive looks like it could chew through the most dense weeds of the Matto Grasso . I have never seen any jet drive on an outboard motor that was that beautifully engineered. It is another example of the ongoing research and development that Bombardier has devoted to the constant improvement of the E-TEC. Ever since the E-TEC was introduced it has been continually improved, and this multi-fuel and jet drive motor is just an example. What a fantastic engine! There is nothing like it on any other outboard. Beautiful. Just beautiful. Thanks again for showing us this E-TEC jet drive.
posted 05-08-2009 11:05 AM ET (US)
Calm down Jim...they have been making that jet for decades...nothing new.
posted 05-08-2009 08:48 PM ET (US)
Nick--Not like that motor! It is wild. I think it might also be rated for some water immersion. I am impressed.
posted 05-09-2009 02:13 PM ET (US)
I/O or inboards with pumps are the ticket for shallow water purposes. Rotax motors are becoming very popular.
On outboard jets, not only do you have a power loss, these engines run HARD for long periods, they wear out twice as fast as propped motors.
posted 05-09-2009 02:19 PM ET (US)
On the etec setup. Interesting propulsion should not be confused with a jet pump with a intake near the same level as the anti cavitation plate (keel).
posted 05-10-2009 11:45 AM ET (US)
Jim...another exciting point or 2.
The engine is designed to be able to ge shot out a torpedo tube...No BS!
Second, it is over $21k but you can buy one. It runs on Jet, Kero, gas or diesel but Jet is recommended.
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