Why Not?

[Blackened]

G'day
#I've just been thinking.....and it can be dangerous for a melencholy. Anyway, why haven't any of the mainstreem manufacturers released a turbo diesel outboard?. I know yanmar have a 26 and 34hp(i think) models of naturally aspirated diesel outboards for armed forces use. Obviously there'll be a weight factor there and with a different torque curve and #better economocal figures.... why not? You can bugger around with all sorts of petrol technology but you can only go so far. Superchargers are a great idea like the verado and that has a long way to go yet aswell. So what are your thoughts, wht not a run of turbo diesel outboards across all horsepower ranges? Shouldnt be too hard to throw an intercooler on there somehow aswel? Am I missing something?
Dave

[Blackened]

G'day...
No-one likes my idea?
Dave

[Spaniard_King]

I think they would struggle with the weight factor of the large horsepower models and I also think the price for a quality made turbo model would be out of most boaties range(everything diesel seems dearer)

Boat manufacturers would have to accomodate the weight, cant see any of them designing a boat for a single 500kg outboard

my thoughts

Garry

[blaze]

Hi Dave
Dont think its a matter of no one liking your idea.
I will open the debate with these comments.
1 - diesel engines are heavier in wall thickness etc to comvensate for the higher compression to fire the fuel.
2 - when any engine is turbo charged they run hotter
3 - super changer requires engine hp to drive the super charger
4 - diesel engines run hotter
5 - the price of diesel fuel will exceed the benifets of more klm per litre

maybe we need to design a wind turbine that operates at a remarkable effiency that is smaller than an outboard but will produce the equefilent hp.
What ever happened to the split cycle engine that was talked about a few years ago, small engery efficient engine for high hp

few ideas in the debate
cheers
blaze

[Blackened]

G'day
Yeh fair call. Just wait for when there's an engine that runs on salt water and salt water only. How??? I have no idea. Why?? cause it's possible.
Dave

[seatime]

The diesel outboards never really took off did they. I worked with a rigid inflatable that had 2 x 70hp Yanmar diesel outboards. That was about 14 years ago, the boat was a pig, very heavy. The motors were 8-10 years old at that stage, not sure of running hours. They were big too.
If they put their minds to it I'm sure they could come up with a successful turbo model. How popular would they be? cheers Steve.

[ahoj]

I agree with----------- blackened----- ;D ;D ;D took brains to work this out ;D ;D

[Sportfish_5]

G'day
Yeh fair call. Just wait for when there's an engine that runs on salt water and salt water only. How??? I have no idea. Why?? cause it's possible.
Dave


Regenerative Fuel Cell technology is here with us now. We have some prototype underground loaders running these instead of Series 60 Detroits. Time will see this technology incorporated into mainstream but they will be in for a hell of a fight with the oil companies :-X


Cheers

Greg

[Blackened]

G'day Greg
It's funny how corporations and governments dictate what we do by disallowing these new technologies to came in sooner than later. All at the expense of the environment and our only planet ultimatly. Well we'll see what happens in the future.... imagine the day when fuel tanks as we know them won't be needed on boats or cars, let alone engines as we know them. No more pollution, no more mechanical bills or fuel bills. It's going to be absolutly amazing.
Dave

[akman1]

Whatever happened to the west oz bloke that developed a variant of the wankel (mazda) rotary engine? this was far lighter and developed more power/less fuel/less emissions/still no vibration than any other engine around.The last I heard was that Ford (who basically own Mazda)were doing pre product testing.????????

[onerabbit]

A turbo deisel would be great ( if someone would produce one ),

Might not be the same comparison, but, my third landcruiser was a straight diesel, what a dog of a thing, now have a mitsubishi triton twincab puddle-jumper. Admittedly different weight range & application, but, half the size motor, 3/4 of the weight (its actually better with a load), & its like driving a normal car, with great economy.

For those that already ran diesel, ( mostly pro fishers, or fishers with really big boats)a turbo model would be unreal.

No good to me though.

I've been wondering for ages why no-one has done it.

Guess there is a good reason why, huh.

Muzz

[cooky]

Whatever happened to the west oz bloke that developed a variant of the wankel (mazda) rotary engine? this was far lighter and developed more power/less fuel/less emissions/still no vibration

i think I know of the motor you're talkign about, but I downloaded a few videos a month ago of a speed boat using a 20B rotary turbo - as you know they are small pretty light motors - this thing was producing something like 800hp. I think in the video they're doing over 150km/h on some lake - sounds great too.

[JewseeTHAT]

Those older fellas amongst us will maybe remember the original Inventors program. Bloke designed, built and had running on that show a water powered engine. SBS ran a thing about him about 12ish years ago, other than that I haven't heard much about him or his engine since. I do recall him being reported to have said he was told in no uncertain terms to never show anyone how to build one. The thing was apparently bought up and buried by a vehicle manufacturer (major seppo co) and or one of the big oil companies (also major seppo mob). No prizes for guessing why our government has never shown any interest in getting it into production.$$$
Sorry for being a bit OT, just had a memory prodded and had to vent.

[PinHead]

Whatever happened to the west oz bloke that developed a variant of the wankel (mazda) rotary engine? this was far lighter and developed more power/less fuel/less emissions/still no vibration than any other engine around.The last I heard was that Ford (who basically own Mazda)were doing pre product testing.????????

I think that would be the Sarich Orbital engine????
They went on to develop some form of air injection for 2 stroke motors and I think some outboard and motor scooter manufacturers use that technolgy now.

[finga64]

What about a supercharger on the 4 banger?? Power from the word go and no lag like a turbo. More economical as well.
There's some real small rotory pumps out now and you only have to worry about altering the inlet side of the manifolds. No problems with the exhaust. Just add drive belt and away you go.
Intercooler position could be a problem though. Could intergrate it in with the baitboard maybe :D Do you need an intercooler??

I have some OLD,OLD mechanics books and there's an ad in one for water injection in any petrol powered car/truck whatever. It just let the water suck in through a metering device via a vacuum port in the carbi. It was supposed to use less fuel and burn cleaner (in the combustion chamber) and emit less emissions. I saw one fitted to an old Torana at Alstonville in NSW. An engineer owned the car and thought is was the bees knees.
My little brother had to rebuild the motor (about 200,000 miles if I remember) and he said the inside was clean as and it was only the fact that all the bearings/ rings just wore out. No carbon build up or gunk/crap inside.

Cheers Scott

[Fishin_Dan]

I may be wrong, but I thought there were a few turbo diesel motors around? I'm sure I've seen them as an option on the Riviera's, Kingtin Swanky Boat (;) ) etc...

[PinHead]

I may be wrong, but I thought there were a few turbo diesel motors around? I'm sure I've seen them as an option on the Riviera's, Kingtin Swanky Boat (;) ) etc...

turbo deisel motors are available ....in an inboard configuration. The original post was enquiring about turbo diesel outboards.

[bidkev]

I may be wrong, but I thought there were a few turbo diesel motors around? I'm sure I've seen them as an option on the Riviera's, Kingtin Swanky Boat (;) ) etc...


Mate, when you ain't got anything else goin' fer yer...........you gotta have something to pose with ;D Stick as many shiny new rods and reels in the targa and rod holders and pull into the ramp, and noone dare ask you what you've caught......they just assume you must have ;D

kev

Down with gravity.

[PinHead]

Yeah Kev..you and your swanky boat with rod holders and shiny rods sticking out of it!!!!!!!!!!!!LOL

[bidkev]

Yeah Kev..you and your swanky boat with rod holders and shiny rods sticking out of it!!!!!!!!!!!!LOL


Pales into insignificance compared to yours mate ;D Wanna buy mine as a tender for yours? ::) ;D

kev

Drink wet cement and get really stoned.

[flyingfish]

;D

A viable option available now is to run an inboard diesel and brew your own bio diesel. Do everyone a favour and collect all their used oil --especialy from fish and chip shops and restaurants. Set up a simple process at home and produce diesel at 30% the price of commercial diesel. Off course you would need to keep the amount you make to yourself or else Johnny will like some excise on the quantity you brew. Bio diesel is proven to be a better quality than commercial diesel. ;D ;D