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  1. #21

    Re: 12v71 TI Detroit’s

    I got my information from Roger Wetherington - you know, the engineer who designed the systems?
    He told me Hatt made two like mine, and concluded it was a fool's errand. However, they ran 25kts in the river behind the plant.
    Look, the little 214 cubic inch six in my SUV makes 450hp, land speed bikes commonly make 2000 reliable hp out of a 1,000 cc four cylinder.
    A 12v71 @ 1000 is agricultural in comparison.
    "The older I get, the faster I was......."

    1979 60C "Ohana" hull# 331

  2. Re: 12v71 TI Detroit’s

    Just having the extra compression ratio point afforded by the NA pistons will most likely be all that is required to get the extra horsepower. Keep that cooling system in top shape. Do you have the DD heat exchangers or the big Sendur units on your engines?

  3. #23

    Re: 12v71 TI Detroit’s

    Quote Originally Posted by luckydave215 View Post
    I got my information from Roger Wetherington - you know, the engineer who designed the systems?
    He told me Hatt made two like mine, and concluded it was a fool's errand. However, they ran 25kts in the river behind the plant.
    Look, the little 214 cubic inch six in my SUV makes 450hp, land speed bikes commonly make 2000 reliable hp out of a 1,000 cc four cylinder.
    A 12v71 @ 1000 is agricultural in comparison.
    Let's have a bet. We'll have a technician look at your engines. I'll put $1000 on it ... you in? It's BS. A technician will take a quick look at the turbo's and injectors and climb out saying ... yep .. 850hp or so 12V71-TI like the rest of the high performance 12V71-TI's.... if you wanted the 1000hp or so, those are the 12v92 or larger engines.

    Show me the 1000 hp agricultural 12V71-TI with 1000 hp. I'm completely unaware of that .. so are you or you might have posted the link.
    Last edited by Bayside Bert54; 09-12-2019 at 06:58 AM.

  4. Re: 12v71 TI Detroit’s

    He would be a pretty poorly trained technician if he made a determination like that based on such limited information.

    I suppose I could search around for a bit and find a multitude of high output Detroit Diesels but then, so can you.

    It would have been fairly straightforward to obtain the information you seek when Covington was around but alas, it is no more. I have no idea if the old Hatteras engine records are in existence or not. I guess we will just have to go what the gentleman says his engines produce and be done with it. At least I will.
    Last edited by kelpy; 09-12-2019 at 08:04 AM.

  5. #25

    Red face Re: 12v71 TI Detroit’s

    Quote Originally Posted by kelpy View Post
    He would be a pretty poorly trained technician if he made a determination like that based on such limited information.

    I suppose I could search around for a bit and find a multitude of high output Detroit Diesels but then, so can you.

    It would have been fairly straightforward to obtain the information you seek when Covington was around but alas, it is no more. I have no idea if the old Hatteras engine records are in existence or not. I guess we will just have to go what the gentleman says his engines produce and be done with it. At least I will.
    I searched ... there are none. Not a single hot rod 12V71-TI with 1000 or more hp. Anyway .. do you buy investments? Just joking ... I'm out.

    His 12V71-TI's will lose a turbo or injector this year or so and that is when he will learn he has a plain old 850hp TI's.

  6. #26

    Re: 12v71 TI Detroit’s

    anyone but me realize the original poster, edward, hasn't responded since origination of the thread? I'm amazed that there are people out there that are so closed minded they refuse to believe something is possible. I bet in 1955 when the small block chevy debuted no one EVER believed it could pump out 1000hp, yet here we are
    '88 55'C hull 394 ​BEATs Therapy
    12-71 TA's ZF BW190 1.5:1 gears

  7. #27

    Re: 12v71 TI Detroit’s

    Quote Originally Posted by Bayside Bert54 View Post
    I searched ... there are none. Not a single hot rod 12V71-TI with 1000 or more hp. Anyway .. do you buy investments? Just joking ... I'm out.

    His 12V71-TI's will lose a turbo or injector this year or so and that is when he will learn he has a plain old 850hp TI's.
    you SHOULD buy investments with your uncanny ability to see the future
    '88 55'C hull 394 ​BEATs Therapy
    12-71 TA's ZF BW190 1.5:1 gears

  8. #28

    Re: 12v71 TI Detroit’s

    Correct me if I’m wrong but aren’t 12-71s essentially 2 671s bolted together? If so 671tibs were max rated 485hp so 2 together would be 970

  9. Re: 12v71 TI Detroit’s

    They are a single block of 12 cylinders.

  10. #30

    Re: 12v71 TI Detroit’s

    Quote Originally Posted by captcrunch View Post
    Correct me if I’m wrong but aren’t 12-71s essentially 2 671s bolted together? If so 671tibs were max rated 485hp so 2 together would be 970
    I'm dying here
    '88 55'C hull 394 ​BEATs Therapy
    12-71 TA's ZF BW190 1.5:1 gears

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