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  1. #1
    Seaman Apprentice
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    Default difference between tldi nissan 40hp and 50hp

    hello,
    i was wondering where the 10hp difference came from these two motors because from what i understood the boreXstroke is the same, cc output, and even the weight so the only thing i could think of is the fuel injection maybe?
    Reason being is i am going to be buying a new boat and want the 50hp because it will have a jet unit on it so i can run the local river. But some parts of the river are restrictred to 40hp. so if i can i would rather by a 40hp and bump it to 50 hp. so it will be capped and titled as a 40hp. Also how much would it approximatly cost?
    thanks,
    duckslayingpro

  2. #2
    Captain JUSTINTIME's Avatar
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    Default Re: difference between tldi nissan 40hp and 50hp

    with that jet pump u loose 50% of rated HP
    HUMAN BUILT = HUMAN FIXED
    CERTIFIED MARINE TECH

  3. #3
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    Default Re: difference between tldi nissan 40hp and 50hp

    yea i know i will lose hp but it is only 30 % and you have to have a jet to run on the rivers around here.

  4. #4
    Vice Admiral TOHATSU GURU's Avatar
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    Default Re: difference between tldi nissan 40hp and 50hp

    You do loose somewhere between 50% and 35%, depending on the jet unit, and the difference is the CPU module on the engines.
    Elvin
    My answers are like Zen...It may not be the answer you want, but it is generally the answer you need.

    The 3 Rules:

    1) Look in your service manual first...Then ask me if it is correct.
    2) Understand that your desire to repair your engine does not mean that you have the ability to do so.
    3) If you are confused, take your engine into a dealer..Then let them be confused...At least, in theory, they sent someone to outboard 101.

  5. #5
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    Default Re: difference between tldi nissan 40hp and 50hp

    thanks, can my local dealer change the cpu and my the 40hp be putting out 50 hp? thanks

  6. #6
    Vice Admiral TOHATSU GURU's Avatar
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    Default Re: difference between tldi nissan 40hp and 50hp

    Yes, but you will lose all warranty and that CPU is around $900.00. You also need to change out the throttle body.
    Elvin
    My answers are like Zen...It may not be the answer you want, but it is generally the answer you need.

    The 3 Rules:

    1) Look in your service manual first...Then ask me if it is correct.
    2) Understand that your desire to repair your engine does not mean that you have the ability to do so.
    3) If you are confused, take your engine into a dealer..Then let them be confused...At least, in theory, they sent someone to outboard 101.

  7. #7
    Seaman Apprentice
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    Default Re: difference between tldi nissan 40hp and 50hp

    thanks guys.

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