Joe ,not sure what your point is ,but I assume by saying the gas engines are dyno,d at 500hp at a given rpm,lets say 5400 rpm ,after that rpm the horsepower start to drop as the torque fals off ,rpm climbs a bit ,but at a few hundred rpm,s more than 5400 the rpm limiter cuts in ,where horsepower has been dropped to 450 or so... not sure exactly but prob not too far off ?
Lots of snow and really cold here but when the spring comes...
FPT 560,s, ASD-8L
ZF 300-ATS(2-speed 1:1.18 / 1:0.875) with electric throttle/shift
Ready boat should be below 10000 lbs
Here's what will and will not work:
- get a 250Hp Cummins B or Yanmar with an SAE #3 bellhousing
use a B/W 72 trans, stock will work fine 1:1
buy an adapter plate SAE 3 to 72C they are easy to find or make
get the biggest prop the TRS will handle
you'll run around at 50-55 mph
do the same thing with a 480Hp and you'll still run 55 mph because you have more Hp than you have prop for
Do it right
- rip the drive off
get an Anreson first
get a 300Hp - 480Hp Cummins B SAE #3 (based of your wallet size)
get the same adapter plate
get a modified 72C tranny 1:1
play with props based on your Hp and you'll have a boat that can cruise all day and night at 60 plus and will do 75 when pushed
Wow, didn't anyone ever wonder why we played with diesels all those years ago when you read what I wrote can't you see endless applications for them - quite, dependable, non explosive, better fuel economy so smaller tanks????
Any way if I were doing it I would do this:
- 480 Hp Cummins
make a set-up box to bolt on bell housing like a 72C would (I like planetary style gears??)
get those new fangled 5 or 6 blade props
have the ability to run from Miami to NY at 85 mph all day & night long (if the drive didn't break)
Now that's just me!
But, you can diesel that pantera for little money there are so many used 250Hp or 300Hp B series out there, very cheap and you have everything else to make it work. There was a 250Hp 4 cyl B which would fit right in wouldn't even have to double check the front engine room bulkhead distance and it would work. You could cruise that boat to Key West or Nassau and not think twice about (good weather days).
Let's be real in the 24' how many days can you really run more than 50 mph for 160 miles to Nassau even if you could?
This is not new this is Fabio Buzzi 101, I love that man, even though he saw me and my program as a problem that he needed to get rid of, he still want about things in a logical common sense fashion that you can't dispute.
I love this on a rainy day, God I yearn to get back doing this!
so i guess the only good thing about them is for around the dock ?.
it just doesn't seem rite . what about with a 3 speed tran's ? i would think that extra gear could make the prop spin faster and create more speed ? just like it would slow down the prop for around the dock .
im new to this deisal stuff so im just trying to learn thank's for all your help .
just so you guy's know im looking to do about 80 mph top end and to be able to cruise at around 60 mph with good fuel consumption .
so let say the 43 nortech had an extra 80 hp per side , how much speed over the 74 mph do u think it will go ?
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