Getting a duramax to last at 1000RWHP
- Thread starter WolfLMM
- Start date
Biggest problem i can see @ 1000hp is no one has been able to acheive the egt's needed to sustain that kind of power for that long of time , my guess would be to get them down to 1150-1200 deg , It hasent been done to my knowledge , even with the big compounds or big singles . Maybe parelell twins could ? or a much larger displacement would be needed IMOP
I'm not sure that's a realistic goal. Marine diesels making that kind of continuous power are much larger than a DMax, weigh twice as much, and are turning 1/2 the engine speed. Marine use really works an engine. Boat skippers I know with large diesels won't run them flat out for even an hour.
Big blocks havent always been able to produce 1000hp, but they do now.
Mercury racing has 1200 SCI motors (632CID) they will make 1200 hp all day long.
I think it is going to take work yeh, but it is possible.
BTW a new 1200sci is around 80k, so I figure spend that much for a one off custom dmax?!
First, I would supercharge it instead turbocharging to move the load from the exhaust system to the crankshaft. Different pistons as well will probably be needed. I think it could be done, but doing it with more cubic inches should be better, and twin engines means 50% less calls to the Coast Guard.
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Well you could go about it the way some of the Cummins puller boys do it... Casting your own block and just useing the stock crank, but how big of a piston can our cranks throw up and down? I wouldn't see why casting a bigger block for a larger bore wouldn't work keeping the stroke the same as the 7.1.
When we run just over 1000hp, to the tires, our egt's run right about 1500*. With a water to air IC and cold water I bet it would be down around 12-1300* if not a touch lower. I know with different turbo's you could get it even lower but the lag would be worse. For something like this you'd probably need to build a bunch of parts to make things as efficient as possible for the lowest egt's. For sustained use the coolant temps would be a big concern.
One thing people probably aren't taking into account is that the ratings on the other motors are at the crank. So that would be about 800hp to the ground in a truck. At that hp level I'm sure we could keep the egt's in check and long as you could keep the charge temps cold.
One thing people probably aren't taking into account is that the ratings on the other motors are at the crank. So that would be about 800hp to the ground in a truck. At that hp level I'm sure we could keep the egt's in check and long as you could keep the charge temps cold.
exactly!!!
The difference between making a dmax live at 800rwhp and 1000rwhp is quite significant...
Massive oil cooler would be a start, to help the pistons, because the dmax IMO is almost as much an oil cooled engine as it is water cooled... (in that, proper oil cooling on a dmax is much more important/critical than it would be on other engines)
I understand what you are saying, Thats what I want 1000 prop shaft horsepower. I am looking to push a 35-40ft boat to 130+mph.
It takes a lot more power to drive the prop than wheels. I could live with 800hp. This is more or less a theoretical build. I don't think I could afford it:angel:
