diesel jetboat!!
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do i hear a challenge??? your talking about a 18 year old backwoods redneck here that will take a challenge any day. i have another idea. i have a blower off a 8-71 detroit, i think it would be a goodstart if i could get 10 psi out of the blower alone... right or no??the extra initial boost will help improve any turbo lag i may have. i need to know how many rpm's an 8-71 blower needs to turn to make 10 psi boost sittin' on top of a 7.3 idi. does anyone know anything about these blowers? will a 4-71 or 3-71 blower make good boost on an idi? does the detroit blower even make 10 psi boost???? how much boost does a detroit have?? will a camshaft out of a powerstroke fit this block? does anyone know the answers to any or all of these questions? i thought it would be a neat twist to the project,i been studyin it all and looks like i would be able to do it with a 3-belt pulley for the blower.. with twin turbos?? the bottom end looks pretty solid to me. if not, we will find out the hard way 
!!!! git-er-done
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7,3 idi in a boat
Spectramac need more of youre help please..
I got the engine running again after i turned the ip 180 degreeds.. hehe..
But only make 3000 rpm and only 7 psi boost..
There is no waste gate of any kind.. Need 15 psi boost and have already turned up the ip.. Pyro instaled.. 850 degreeds F..
Can the injectors be wrong.. I had LJC 6760301 injectors original but i bought 93-94 7.3L Ford factory turbocharged (G code) *NEW* Diesel Fuel Injectors LJCK01102
Because it was for turbo......
Can the original injectors give me more diesel??????
HELP::
3000 rpm and 32 knots.. Bravo 3 and 1-1,5 gear with 24 inch props..
I got the engine running again after i turned the ip 180 degreeds.. hehe..
But only make 3000 rpm and only 7 psi boost..
There is no waste gate of any kind.. Need 15 psi boost and have already turned up the ip.. Pyro instaled.. 850 degreeds F..
Can the injectors be wrong.. I had LJC 6760301 injectors original but i bought 93-94 7.3L Ford factory turbocharged (G code) *NEW* Diesel Fuel Injectors LJCK01102
Because it was for turbo......
Can the original injectors give me more diesel??????
HELP::
3000 rpm and 32 knots.. Bravo 3 and 1-1,5 gear with 24 inch props..
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From: Northeastern Pa - USA
Berken ...Is it the governor causing the low engine speed or is it running out of poop ? There are some tricks to be done inside the injection pump to get more fuel out of it. I would imagine you could get more than 7 psi of boost unless there is a wastegated turbo on it.
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From: Monroe, WA
I would guess those injectors are too small for your engine. The originals were probably way overflowed to get the kind of power that thing is rated at. Wasn't it something like 300 horse? Putting all those Ford pickup parts in there is going to seriously knock down the power. What was done with the injection pump? I hope it wasn't set to Ford specs also.
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well, wellcraft, im sure the stock injectors give the motor plenty of fuel, i wouldn't get all excited about it just yet. does the motor smoke at all? during turbo lag. or does it smoke wide open? the timing can be set pretty good by ear and really good by the egt pyro. time the pump a little retarded or a little advanced and see which way makes your pyro and boost skyrocket. the timing is real sensitive on these. if the timing was set by someone that knows what they are doing, then make a mark with a chisel and small hammer and go from there, i think i read somewhere that .030 away from the mark is about 1 degrees of actual crank rotation. go probably 2 degrees at a time and see which one makes more heat and probably more boost. i would say turn the fuel up about 1/2 turn, thats wut i did on my truck with no turbo... it smokes BLACK but runs fine and i heard they they put out 1100 degrees stock on the pyro, so somethings still not right for you. really i dont know how you are pushin 7 psi boost with that low egt. unless your guage is broke. just a suggestion.
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IP Specs
To Spectramac:
The pump was overfueling (30cc)as well as not making sufficient advance.
IP was set to marine Mercruiser specs with 270 hp..
The engine is 270 or 300 hp not shure..
To 89ford73:
Engine does not smoke at all on idle , even when cold. At startup its a litle puff off grey/black smoke..
On heavy load , before boat goes into plane engine gives a litle light black smoke for 2 sec.. Then nothing.. Just a lot of noise hehehe.. No muflers..
The ip is set on the litle mark on the housing. Havent checked the timing. I have turned up the pump 1/4 from spec that Oregon fuel did when they had it..
Last i will say the gauge is new.. Isspro.. But it can be wrong because its installed in a watercooled bend after turbo.. But the pressure from axhaust will push the water out avay from the sensor ...Right?? Water outlet is 3-4 cm from the sensor..
Last testrun i got the engine's water hot.. 95 degreeds celsius.. Then i had to ease of the trottle.
The pump was overfueling (30cc)as well as not making sufficient advance.
IP was set to marine Mercruiser specs with 270 hp..
The engine is 270 or 300 hp not shure..
To 89ford73:
Engine does not smoke at all on idle , even when cold. At startup its a litle puff off grey/black smoke..
On heavy load , before boat goes into plane engine gives a litle light black smoke for 2 sec.. Then nothing.. Just a lot of noise hehehe.. No muflers..
The ip is set on the litle mark on the housing. Havent checked the timing. I have turned up the pump 1/4 from spec that Oregon fuel did when they had it..
Last i will say the gauge is new.. Isspro.. But it can be wrong because its installed in a watercooled bend after turbo.. But the pressure from axhaust will push the water out avay from the sensor ...Right?? Water outlet is 3-4 cm from the sensor..
Last testrun i got the engine's water hot.. 95 degreeds celsius.. Then i had to ease of the trottle.
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Originally Posted by Spectramac
Wellcraft,
What RPM is normal in the boat? I'm assuming you've run the boat before all this. If you haven't then I guess you don't know what kind of boost it had before either.
What RPM is normal in the boat? I'm assuming you've run the boat before all this. If you haven't then I guess you don't know what kind of boost it had before either.
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From: Monroe, WA
I'd just keep turning up the fuel in the pump till it hits 1000 degrees on the pyro, you get the boost you want, or the black smoke starts rolling!
If the screw bottoms out before you get there, you need to get some different injectors or have the pump jacked up at the shop.
If the screw bottoms out before you get there, you need to get some different injectors or have the pump jacked up at the shop.
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Originally Posted by Spectramac
I'd just keep turning up the fuel in the pump till it hits 1000 degrees on the pyro, you get the boost you want, or the black smoke starts rolling!
If the screw bottoms out before you get there, you need to get some different injectors or have the pump jacked up at the shop.
If the screw bottoms out before you get there, you need to get some different injectors or have the pump jacked up at the shop.
This weekend i'l change the injectors..
Hope this work.. On the test run i used abaout 44 litres of fuel..Abaout 60 min of driving . And thats good results.. At full throtle its supposed to use 70 litres an hour.. Hehehe.. And do you know what the diesel cost in Norway???
0,64 $ for 1 liter..
Thats boat diesel.. Car diesel is 1,28 $ liter..Gasoline cost 1,47 $ for 1 liter..
Whats the price in US???
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Originally Posted by 460429_freak
in missouri deisle 1.93-1.99 a gallon (hwy use)
gas 87 octange $1.73 a gallon 89 oct $1.83 93 oct $1.93 a gallon
gas 87 octange $1.73 a gallon 89 oct $1.83 93 oct $1.93 a gallon
Lowest oct we have is 95 then 97 and 98 oct..
95 oct. was the price i wrote .Ten ohter ones are more expensive..