Sea Sled madness. It’s in my brain.

Discussion in 'Fiberglass and Composite Boat Building' started by DogCavalry, Nov 11, 2019.

  1. DogCavalry
    Joined: Sep 2019
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    Location: Vancouver bc

    DogCavalry Senior Member

    Right. And I've been looking at power/weight relationships. Yamaha's 225/25/300 all weigh the exact same. Every engine has a torque curve, power curve, and fuel consumption curve. And none of those peak at WOT.
     
  2. kenfyoozed
    Joined: Mar 2005
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    Likes: 24, Points: 8, Legacy Rep: 10
    Location: mobile, al

    kenfyoozed Junior Member

    Thats because they all the same engine with different programs. I have a max 250 on my tritoon and have plans to get the ecu flashed to a 300. I believe that some of their sampled engines share the same platform and cab be flashed as well, but I may be wrong.
     
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  3. fallguy
    Joined: Dec 2016
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    Location: usa

    fallguy Senior Member

    A lot of the engines use the same block, but are bored out more to get higher hp. It isn't usually software.

    That said, there are probably limiters that can be messed with, but not on my dime.
     
  4. kenfyoozed
    Joined: Mar 2005
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    Location: mobile, al

    kenfyoozed Junior Member

    The max 200,225, 250 all are 4.2l. Same block and same liters. All ho change is done through the electronics.
    Hydrotechmarine.com can flash up to the 300hp. Simple reprogram.
     
  5. DogCavalry
    Joined: Sep 2019
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    Location: Vancouver bc

    DogCavalry Senior Member

    Dang. And on my budget, I'll be using a half dead 300 on one side, and a 75 on the other....
     
  6. cracked_ribs
    Joined: Nov 2018
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    Location: Republic of Vancouver Island

    cracked_ribs Junior Member

    Yes, this is the rule, not the exception.

    Yamaha 75-115, all 1.8l. 225, 250, 300, all 4.2l. In 150-200, they're all 2.8l, except one mechanical model which is a 2.7.

    Honda 115 and 150, both 2.3l. 225 and 250, both 3.5l.

    I'm not going to list off every manufacturer and engine but think about it...why would you tool up a whole production run of mechanically different engines when you could easily accomplish the same thing with software? It makes no sense. Just program it to get what you need out of it. Very cheap, very fast, perfect parts commonality, huge savings. There is a reason it's been this way for many years now.
     
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  7. DogCavalry
    Joined: Sep 2019
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    Location: Vancouver bc

    DogCavalry Senior Member

    A fella, not addicted to a particular brand, might do a cost per hp/ pound per hp analysis.
     
  8. DogCavalry
    Joined: Sep 2019
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    Location: Vancouver bc

    DogCavalry Senior Member

    Next boat. Crosstown engines. Just sayin.
     
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  9. Cajunpockettunnel
    Joined: Aug 2020
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    Location: Franklin, LA

    Cajunpockettunnel Senior Member

    Sounds like a reman.
     
  10. cracked_ribs
    Joined: Nov 2018
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    Location: Republic of Vancouver Island

    cracked_ribs Junior Member

    This is always the great dilemma for me...would I rather have a big outboard or two on the next boat, or an inboard cummins? Fifty knots in ideal conditions, or twenty-five in all conditions? At some point the diesel makes sense but hard to tell exactly when; it depends exactly what you want out of the deal. Getting the weight off the transom and putting 800 pounds of low down iron in her belly has some appeal for its own sake.

    On the other hand, seeing as I spent a year working underground surrounded by diesel machines that, even fitted with scrubbers, left me with a diesel sensitivity that makes me instantly ill now when I smell it, maybe I'll just stick with outboards.
     
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  11. DogCavalry
    Joined: Sep 2019
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    Location: Vancouver bc

    DogCavalry Senior Member

    It's a real question. For me the issue was the same power inboards or outboards, but with the inboards at a small fraction of the cost. Outboards won, because proper engine compartments for a pair of v8's take so much interior space that outboards were better. Next boat will be bigger. An engine room will be an acceptable compromise.
     
  12. DogCavalry
    Joined: Sep 2019
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    Location: Vancouver bc

    DogCavalry Senior Member

    They sell crate engines for lots of applications. Race, replacement, and marine.
    Marinized chev 454 rated 350hp continuous duty, $4100 US. Compared to 60 grand for a 350 outboard. But the engine compartment for that big boy is too much of my interior.
     
  13. Cajunpockettunnel
    Joined: Aug 2020
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    Location: Franklin, LA

    Cajunpockettunnel Senior Member

    Yeaaaaa, I went check out their site. I saw reman and just threw that comment in there to rib ya. I'd like one of them to build a mud boat, but, I really don't have use for one.
     
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  14. Cajunpockettunnel
    Joined: Aug 2020
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    Location: Franklin, LA

    Cajunpockettunnel Senior Member

    We have lots of used pairs for sale down here for pretty fair prices. Only thing would be is getting them to you.
     
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  15. DogCavalry
    Joined: Sep 2019
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    Location: Vancouver bc

    DogCavalry Senior Member

    Considering what I'm likely to pay, shipping cost might be totally worthwhile. Last year, I'd have just driven down to get them.
     
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