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Thread: Torque VS Horsepower

  1. #1
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    Default Torque VS Horsepower

    I heard this today...

    Gas boats are known for their horsepower and diesel boats for their torque..

    What’s the difference?

    Horsepower is how fast you can hit the dock...

    Torque is how far you can drag the dock after hitting it...
    Quote Originally Posted by ecu1984 View Post
    Steelin' Ducks is the KRT of suppressors and such.

  2. #2
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    Ha ha, yep. Good description. A buddy was telling me last night how his son just ran his new glitter boat into a dock yesterday hauling ass chasing those high speed bass. Several years ago I witnessed a 58 Garlington crank in gear and a about haul off D dock at Edisto.

  3. #3
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    Does a motor known for torque last longer than a motor that has high RPM and horsepower?
    Either write things worth reading, or do things worth writing.

  4. #4
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    This is your fishing spot when you just got torque.

    Sent from my moto z4 using Tapatalk

  5. #5
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    Speaking of torque, Im getting twin 425's on the new tier 1 I ordered, when they find motors, and windshields, and resin. I blame Biden.
    Either write things worth reading, or do things worth writing.

  6. #6
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    Torque never won the Kentucky Derby. Horsepower always wins.

    Sent from my moto z4 using Tapatalk

  7. #7
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    Quote Originally Posted by Catdaddy View Post
    Torque never won the Kentucky Derby. Horsepower always wins.

    Sent from my moto z4 using Tapatalk
    Got to have torque to move the big boats and turn the big props though.

    My son asked me the other day if I'd put 350's on the Southport. I told him that $15-20K more for another 200hp wasn't worth it when the top end wouldn't be more than 4-5mph difference over the 250's. Fuel economy would pick up a little but you'd have to run a lot of hours to make up the delta in cost and efficiency. Plus, I can't remember the last time I ran my boat WOT in the ocean. I'd rather set it on a good cruise and enjoy the ride. People get too hung up on top end for a deep V CC, you rarely use it. Speed is for you glitter boat guys.
    Yeah, but do you consider a dog to be a filthy animal? I wouldn't go so far as to call a dog filthy but they're definitely dirty. But, a dog's got personality. Personality goes a long way.


    You might take out a dozen before they drag you from your home and skull fuck you to death. Marsh Chicken 6/21/2013

  8. #8
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    When we switched to the 4.2 300s from the 3.3 250s on our Contender, it behaved like a totally different boat. Taking 240lbs off the transom helped a lot.

    With the big new outboards, the lower unit is your weak link.

    A big CC is a versatile boat. Sporties with diesels troll like nothing else.

  9. #9
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    Default Torque VS Horsepower

    Quote Originally Posted by Steelin' Ducks View Post
    I heard this today...

    Gas boats are known for their horsepower and diesel boats for their torque..

    What’s the difference?

    Horsepower is how fast you can hit the dock...

    Torque is how far you can drag the dock after hitting it...
    Yep.

    Torque is how much work you can do, HP is how quickly you can do that work

    Gas engines turn more rpm therefore can do work faster.
    Last edited by Gone South; 04-11-2021 at 09:21 PM.

  10. #10
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    Torque is more the conversion of that horsepower. Mass is also a big part of it.

    A cruise ship has about 50,000hp in its engines so it should hit that dock close to Mach 1.

  11. #11
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    Hp is actually calculated from torque. How fast it is doing “torque”

  12. #12
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    I'm told a pair of 425's will push my dream team boat 60 mph. Thats HP

    Also told it does not matter if it is fully loaded down. It still does 60. That is torque.


    I don't believe either since they have not even made it on the cargo ship yet.
    Either write things worth reading, or do things worth writing.

  13. #13
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    Torque is for drag racing.
    HP is for round track.
    I don't need my name in the marquee lights....

  14. #14
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    Most engines produce their torque at far lower RPMs than they create their HP. The lower RPMs over the life of the engine increase longevity. Unless you can change your gear ratios like in vehicles or a variable pitch prop like at airplane (some boats have this also) then your ideal speed, load, mission, it fixed to some extent. Big sportfishers have "trolling valves" which effectively change the gearing so they can troll at lower speeds but still have the capability of high speeds. These new SF have 50kts as a target. The HP/Torque/Speed wars are in full effect. This will get very interesting over the next ten years. MG
    Dum Spiro Spero

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