SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: Dennis on May 15, 2014, 07:23:48 PM

Title: Fuel consumption/Rio Classic
Post by: Dennis on May 15, 2014, 07:23:48 PM
Hi,I'm new to jet boating.I just bought a 2009 Thunderjet Rio Classic with a 383 stroker engine.What is the R.P.M to operate at for best fuel consumption.Any other Rio owners out there?let me know what you think.Thanks.
Title: Re: Fuel consumption/Rio Classic
Post by: GeneralLee on May 16, 2014, 12:51:32 AM
Nope you didn't buy it...that boat doest exist. No pic's, no boat. Sorry to brake the bad news to ya.



Title: Re: Fuel consumption/Rio Classic
Post by: 5150whiteboy on May 16, 2014, 06:04:06 AM
I know it's your first post but around here it's pic's of the boat and motor or it's all bull ish lol.


SRC

Sent from my iPhone 5 using SoCalJetBoats mobile app
Title: Re: Fuel consumption/Rio Classic
Post by: crewchief22 on May 16, 2014, 06:13:52 AM
Welcome to SCJB ;D

I had to look up the ThunderJet brand to see what you were talking about... Very cool boats but not many owners on the site, in fact you might be the first.  Most of us are working with 30-40 year old fiberglass classics  :screwy:

I still should be able to answer your question because jet pump function hasn't changed much in forever. 

First, the terms "fuel mileage" and "jet boats" really should never be used in the same sentence.
And #2, You'll probably get the least fuel consumption around 3000-3200rpm.  You want to be going fast enough to be on plane but trying to keep the rpms as low as possible. 

Enjoy the new float.
Title: Re: Fuel consumption/Rio Classic
Post by: crewchief22 on May 16, 2014, 06:33:24 AM
After thinking about it some more...

The fun factor is directly related to the tachometer, so your question is pointless.

You need to plan on using all your fuel every time you take it out, and just understand that you will have to adjust the length of your trip based on how much fun you have.  ;)
Title: Re: Fuel consumption/Rio Classic
Post by: 5150whiteboy on May 16, 2014, 07:37:35 AM

After thinking about it some more...

The fun factor is directly related to the tachometer, so your question is pointless.

You need to plan on using all your fuel every time you take it out, and just understand that you will have to adjust the length of your trip based on how much fun you have.  ;)
.  That right there is the best advise for any jet boat owner!!!!


SRC

Sent from my iPhone 5 using SoCalJetBoats mobile app
Title: Re: Fuel consumption/Rio Classic
Post by: Horizonjet on May 16, 2014, 07:44:21 AM
The best fuel consumption  is on the trailer....LOL!
Title: Re: Fuel consumption/Rio Classic
Post by: Your Mom on May 16, 2014, 08:36:39 AM
Hold a milk carton unside down... thats bout how fast
Title: Re: Fuel consumption/Rio Classic
Post by: Horizonjet on May 16, 2014, 11:55:35 AM
But its worth it!
Title: Re: Fuel consumption/Rio Classic
Post by: ka0tyk on May 16, 2014, 12:01:25 PM
heres a view of the inside of a carb on a boat:

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2F2.bp.blogspot.com%2F-oImBJoJHmps%2FUflnnt9SFQI%2FAAAAAAAAOBg%2FXFLkNka9KFs%2Fs1600%2Fdam-spill-gate-opening.gif&hash=75555663e23a850bc28f412dcd8d61f1fd90253a)

as far as best fuel consumption in any boat its gonna be right as the boat gets on plane, you'll feel that you can back the throttle off and maintain being on plane.  usually the motor makes a nice noise at that rpm.  aka "the sweet spot"... every boat is different.
Title: Re: Fuel consumption/Rio Classic
Post by: Horizonjet on May 16, 2014, 08:51:51 PM
heres a view of the inside of a carb on a boat:

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2F2.bp.blogspot.com%2F-oImBJoJHmps%2FUflnnt9SFQI%2FAAAAAAAAOBg%2FXFLkNka9KFs%2Fs1600%2Fdam-spill-gate-opening.gif&hash=75555663e23a850bc28f412dcd8d61f1fd90253a)

as far as best fuel consumption in any boat its gonna be right as the boat gets on plane, you'll feel that you can back the throttle off and maintain being on plane.  usually the motor makes a nice noise at that rpm.  aka "the sweet spot"... every boat is different.

That about sums it up. Nothing like running out of gas in the middle of the lake during the middle of the week and you have only seen 2 other boats all day and its 107 and no Bimini and your only friend Wilson falls overboard (castaway movie joke)
Title: Re: Fuel consumption/Rio Classic
Post by: Dennis on May 17, 2014, 10:56:03 AM
I'll just have to play with it to figure it out,thanks for the input.The rivers and lakes are still frozen where I live in the arctic,I haven't even tried the boat out yet.The boat will be used for hunting and fishing,that's why I asked.Thanks again.
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