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  1. #1
    Join Date
    Dec 2017
    Location
    Seattle, WA
    Posts
    31

    Default Is 400 enough on an 18 SL?

    I have a 2018 SL450, and now my buddy is looking to upgrade from his master craft. He found a great looking SL400 and is about to pull the trigger. Heíll use it at sea level, so elevation isnít an issue. Can anyone confirm that the 400 is enough engine in the 18 (pre-new transmission)? My set up for surf is full ballast +900lbs lead, and he will likely do the same. Primary usage is surf (no wakeboarding).

    Thanks in advance!


    Sent from my iPad using Tapatalk
    2018 Supra SL

  2. #2
    Join Date
    Aug 2017
    Posts
    758

    Default

    If it seems like it's "not enough", re-prop it. It'll be plenty, especially at sea level.
    2019 Supra SL450

  3. #3
    Join Date
    Apr 2013
    Location
    Knoxville TN
    Posts
    1,349

    Default

    2018 SL 400 works fine in Knoxville. Never any surf issues with add'l lead and people.
    We do not run full ballast wakeboarding at 22mph.

    If I bought new, it would be the 400.
    Used boats would be either 400 or 450.
    Yea, a 450 would be nice, so would the update trans ratio on a new model.
    2018 Supra SL400

  4. #4
    Join Date
    Aug 2017
    Posts
    1,009

    Default

    Quote Originally Posted by pedel View Post
    I have a 2018 SL450, and now my buddy is looking to upgrade from his master craft. He found a great looking SL400 and is about to pull the trigger. He’ll use it at sea level, so elevation isn’t an issue. Can anyone confirm that the 400 is enough engine in the 18 (pre-new transmission)? My set up for surf is full ballast +900lbs lead, and he will likely do the same. Primary usage is surf (no wakeboarding).

    Thanks in advance!


    Sent from my iPad using Tapatalk
    Am I missing something here......you two would have the exact same transmission by my calculations. Did the change not occur in the middle of the 2019 model year?

  5. #5
    Join Date
    Apr 2013
    Location
    Knoxville TN
    Posts
    1,349

    Default

    Quote Originally Posted by dakota4ce View Post
    Am I missing something here......you two would have the exact same transmission by my calculations. Did the change not occur in the middle of the 2019 model year?
    That is what I recall.

    2018 was the same 1.5 ratio.

    2019 was the 450/1.76 was a mid-year change. I do not think the 400s had that.

    2020s was 400 and 450 @ 1.76

    The 550 motors never had that option.
    2018 Supra SL400

  6. #6
    Join Date
    Dec 2017
    Location
    Seattle, WA
    Posts
    31

    Default

    Yes hats correct. I know that the 18 450 is plenty and just wanted to confirm that the 400 with that ratio was good to go.


    Sent from my iPad using Tapatalk
    2018 Supra SL

  7. #7
    Join Date
    May 2018
    Posts
    1,338

    Default Is 400 enough on an 18 SL?

    I would say your limiting factor on an SL 400 at sea level would be wakeboarding full ballast at 23mph and honestly it probably will still pull it.

    Surf will be no issue with a 2775 prop.


    Sent from my iPhone using Tapatalk
    2018 Supra SA 400
    Michigan

  8. #8

    Default

    Amazing that's my future dream ! i'm saving some money for doing that in the future

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