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  1. #1
    Join Date
    Apr 2022
    Posts
    1

    Default Ordering new SA. What motor?

    Live and boat in Utah at about 6000 Feet elevation. Not sure what motor to pick for a new SA. The 450 or 575. Dealer says the boat is a pig with the 450 and everyone orders theirs with the 575. Not sure I believe that but I could be very wrong. Not interested in spending the extra on the 575 if i really donít need it. Thanks for the info. Much appreciated.

  2. #2
    Join Date
    Mar 2022
    Posts
    7

    Default

    I would say check around a bit. Maybe find some people that have other boats on the lake there. General rule of thumb seems to be 3% loss in power per every 1,000 ft above sea level. This formula is a generalization. To be exact, barometric pressure and air temperature play a role too, but this is probably a close estimate. So a 410 hp Raptor 450 would be about 336 hp. Probably a little more. That's still a lot of power for an SA. If in a bigger SL or SE, then maybe underpowered a bit. Depends on if you run loaded with crew and ballast to the max all the time, and what do you consider to "be a pig".

    Sent from my SM-G781V using Tapatalk

  3. #3
    Join Date
    Jun 2020
    Posts
    24

    Default

    Coming from the Lake Tahoe area and regularly boating from between 4500-7000 ASL the 450 performed fine with full ballast and 900lbs of lead with the 16x15 prop. I would option the 13.9 prop with the 450 and save some coin.


    Making my new SA build come true!!!
    2020 SA 450 in my future? We will see
    2017 Sanger V215sx. We call it Viagra because it's the little blue boat that gets everyone up (For Sale)

  4. #4
    Join Date
    Jun 2012
    Location
    Knoxville TN
    Posts
    1,401

    Default

    If you are going load the boat down with lead and people, the big motor. I'm betting this is for resale too.

    300-500# pounds of add'l lead with the right prop and you should be ok with the new trans.



    Sent from my P00I using Tapatalk
    2018 Supra SL400

  5. #5
    Join Date
    Apr 2022
    Posts
    1

    Default

    Quote Originally Posted by 2in2out View Post
    Coming from the Lake Tahoe area and regularly boating from between 4500-7000 ASL the 450 performed fine with full ballast and 900lbs of lead with the 16x15 prop. I would option the 13.9 prop with the 450 and save some coin.
    https://seriale.best/

    Making my new SA build come true!!!
    I also want to. And I know it will happen soon. I will definitely be proud of it!

  6. #6
    Join Date
    May 2022
    Posts
    1

    Default

    Quote Originally Posted by HCRjb View Post
    Live and boat in Utah at about 6000 Feet elevation. Not sure what motor to pick for a new SA. The 450 or 575. Dealer says the boat is a pig with the 450 and everyone orders theirs with the 575. Not sure I believe that but I could be very wrong. Not interested in spending the extra on the 575 if i really donít need it. Thanks for the info. Much appreciated.
    I probably boat on the same lake as you and you wont regret spending the money on the bigger motor. (I didnt) When you're loaded down with people, gear and ballast you will need it. Had a moomba max with the 450 motor for 2 years and ordered my Supra with the 550 for last summer. With my moomba I was always wishing for a little more and pulling up a 275+ pound guy was sometimes a challenge with the moomba. Last year with the Supra i never found myself wishing I had less power. Sure you can get by with the 450 but if you just want to get by you wouldnt be buying a supra.

  7. #7
    Join Date
    Jun 2012
    Location
    Knoxville TN
    Posts
    1,401

    Default

    Utah and 550s are a good match.


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    2018 Supra SL400

  8. #8
    Join Date
    May 2022
    Location
    ARKANSAS
    Posts
    2

    Default

    Just got mine yesterday. Has the 450 and it's a monster. I'm in Arkansas though.

  9. #9
    Join Date
    Jun 2012
    Location
    Knoxville TN
    Posts
    1,401

    Default

    Quote Originally Posted by Ericspainter View Post
    Just got mine yesterday. Has the 450 and it's a monster. I'm in Arkansas though.
    Lots of 400 around here, Knoxville TN. But on the new models, seeing more 450s. I think there is a peace-of-mind factor in this. Have the extra power with the new trans package.
    2018 Supra SL400

  10. #10
    Join Date
    Jul 2010
    Location
    N.W. Suburbs Chicago, IL
    Posts
    2,307

    Default

    Personally I look at it like this. I do not like to work harder than I must. Same thing with engines. Why run a smaller engine really hard when a slightly larger engine does the same work but with less effort?
    '86 Comp TS6M - Reborn 2016
    Riding a HO Sports CX Ski

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