I dont have a 1000hp dmax. I know of people that have them. Stock crank is seems to handle that power. Rods are a different story. The only headers available are RDL's. Rods need to be forged Carillos H beam. A good tune will net you 500hp on an otherwise stock Dmax. I a marine build a 500hp tune only motor would not last the rods would bend. To get the motor to last 3-400 hours is the tricky part, I never said I have all the answers just some.

EDIT: I am curious, where did you get that info?

Thanks

Wolf

35K is a ball park figure. That doesnt not include the turbos, duel cp3's, and all other odds and ins.

Wolford - you didn't answer my questions therefore I will not waste my time with you - good night have a nice life!

oops - I appologize I said gears but meant gear ratios and prop size

Headers may not be a good idea, in general, in a turbo charged diesel application, let alone a marine app with cooled exhaust. A warm turbo is a happy one. You need heat(expanding gas) to drive the turbine.

Probably need a stainless log style manifold. Really thick, with water jackets. That should keep most of the heat in the exhaust while still keeping the external heat(fire hazards) minimal.

Go screw yourself! I dont care, aww I didnt answer your questions. Looks like I did, maybe you missed it?? I didn't ask for your help so dont waste your time.

You have a nice life while my parts and systems keep you safe, enjoy boating

Why have I been met with such hostility? I'm here to learn. I dont know very much about boating in general, I was actually hoping to get some pointers out of this thread, but I guess not. I'm a hobbiest, I just like to go fast with diesel power. I did not mean to step on anybody's toes.

Taking a 13K motor and adding 22K in modifications is not enough? Sounds like an alacart dinner.

The pricing is getting a bit out of hand if it goes into the 40's as that is just to much to pay for something like this. As I've said, the 1,000 hp does not seem realistic "in a boat" as the most common application would be a heavier boat requiring two of these and the loads will be higher than in your boat and this will tax the egt's and the life of them. The motors do not like rpm and they all say this. I'd like to see the 5K rpm though I don't think it is realistic.

My info? I'm a newby to the boating world. I learn everything from the internet. Seriously though, there are many people out there with this same idea and plan. None have produced as I have mentioned before and I've spoken to a lot of them, not all but a lot.

I dont want this to get out of hand but, the motors do like rpm hell they will turn 4k with stock valve springs. Will they last 300 hrs doing so? NO. 1000 hp may be high? IDK. 800hp is definately doable. You could find a good motor and harness for around 4500. Let SoCal work some magic for 15-20k. Add the turbos(I am going to guess here around 5k for everything???) and the extra cp3(2500). So your up to 32K roughly.

I would love to see somebody accomplish this. I have not heard of anybody currently trying? I am going to one day...just not today. There was a time when everybody said a BB couldnt achieve 1000hp....just food for thought

Everyone says about 4,300 rpm max so????

You have to look at what the diesel has to offer and what the perceptions the buyers are going to want.

Diesels

1. Torque
2. Reliability
3. Heavy
4. Efficient (fuel)
5. Low maintainance

Wants

1. Torque
2. Reliability
3. Light weight
4. Efficient
5 Low maintainance


Duramax is light, (comparatively speaking) can be low maintainance and can be reliable. You try to tweak it and get power but if reliability suffers you are in the same boat as the gas engines and if this is the case, why bother.

People want it all, especially boaters. When you say 1,000 hp you have to realize making the engine produce 1,000 hp is one thing, making it produce it and live is another thing. No one is going to invest in a gernade engine. In Sweden there is a company "marine diesel" that marinizes the Duramax. They do not tweak them above 400 hp and I would guess they use a stock Duramax engine http://www.marinediesel.nu/md_site_com.html

Simple... It's the way you went around answering the question. Avoided giving your name or affiliation to a company that might help us all on the subject in hand. Extremely sketchy.. Agenda at hand. It is all hear say.. unless proven otherwise. We've seen it here for years..