Inboard Diesels-Subaru a possibility?

[Midnight]

No Lee, unfortunately I will miss it. I am going back to work on Thursday arvo until Monday arvo

[lethal098]

Bugger ah well, not sure if its gonna happen yet, waiting on the answer tonight

[wakakiwi]

would love to put a td42 turbo nissan motor in mine just got to find a bell housing to mate up to the volvo leg i am not ready to give up yet

[Midnight]

Good luck with it bro

Is the Volvo leg off a petrol or diesel originally? The petrol ratios would suit the vehicle engine torque and HP curves, but unless it is a 290 duo-prop leg I don't think it will handle the torque of the diesel for long.

What revs are peak torque for that motor Waka? If you can cruise at the peak torque revs, you will be kicking goals. Propping can make up a bit for the wrong ratios in the box.

How do you plan to marinise it? I am interested to see how it works out. Our forfathers marinised plenty of truck or car engines for boats over the years and they worked just fine.

Try Dellow Automotive for a bell housing, they always used to be good for oddball vehicle conversions.

An old mate of mine used to pull the motor out of his Ford truck and fit it to the boat to go to Moreton for weekends They were the days....

Chur cuz

[Lovey80]

How does the DuoProp work, and what are it's advantages?

[BM]

Chris, the duoprop (or Mercs version which is called the Bravo 3) has two props on the one leg. One prop is right hand rotation and the other prop is left hand rotation. There are 2 driveshafts (one inside the other) so one spinning clockwise and the other counter clockwise. The concept is that the counter rotating props reduce cavitation dramatically which greatly improves grip and responsiveness.

The duoprop setup is fat superior to a single prop leg.

[rat_catcher]

There are not too many other than little engines that have been designed from the drawing board as pure marine engines. The small Volvo's (like mine) were never anything but a marine engine.

Yeah the Volvo D Series engines were all designed from the ground up as marine engines only.

[rat_catcher]

Yanmar 6LP series and ZT350 drive would be my pick.

A good solid engine, but a little old from a technology perspective. I would be looking at the Volvo D Series. But yes they are common rail and fuel quality is a concern, but you do get more bells and whistles with the electronic readout for fuel usage etc.

I second the advice to get onto boatdiesel.com and do a bunch of research. Some good info on that site.

[Midnight]

Thanks Rat-Catcher,
yeah I consider the D series in the "small" Volvo range. I guess the D6's aren't really small in HP. The TAMD range I had in mind was 122's etc.

Volvo have had some issues with the D series electronics that have caused some dramas around the place and I have gone off them. I was all for a D6/DPH drive package as the drive is outstanding.

The Yanmars are older tech but they are still available in full mechanical diesel, but with great efficiency, and this would make them the pick for me for a single installation. They require no power to run once they are started, and if they stop, then the normal mech diesel trouble shooting can be followed.

I have driven a few boats now with common rail diesels in (QSM11's etc) and they are awesome. No smoke ever, even on a cold winters morning, and the response and efficiency is a thing to behold. 14L/hr total for both donks trolling at 8kts in a 46 foot Deep V game boat. Very impressive.

Cheers,
Myles

[The-easyrider]

The other day while waiting for a plane I was reading a mag and there was a note about hyundai diesel marine engines producing a range of smaller motors suitable fro trailer boats that would upset the market price wise

[Lovey80]

Thats interesting. I wouldn't be the one to test the market without a very big warranty.

[TimiBoy]

Volvo. They chased me away when I couldn't get ANY info off their website. Damn thing is a dog. When I get to "buy time" I will be having a chat with them, but...

I like the Yanmar for the sake of reliability. Also it's power, torque and fuel usuage curves rate well against the common rail stuff, though the V6/8 Volkswagen gear is still in the mix for me, and if it is substantially quieter it is likely to win.

Here's a question: Once running, will a common rail be less smelly than old tech or will there be little difference, given the Yanmar will be pretty clean anyway?

The Yanmars read very well on Boatdiesel.com!

Cheers,

Tim

[Mr__Bean]

Read it and weep, Baby!

http://www.yanmar.com.au/marine/lp_series/lpseries.htm#

Cheers,

Tim

Yep, the very successful 4.2 litre turbo diesel from the Landcruiser.

On our low grade Australian diesel it should pump out about 295 hp.

- Darren

[Smithy]

Duoprops also eliminate the prop torque effect too. My new boat heels over a bit with the single but it swinging a 21" prop!

[TimiBoy]

OK, so here's a question:

If the 100 Series Cruiser diesel (Yanmar 315 HP) is such a cracker, when is the 200 Series V8 being marinised? Now I'd buy THAT for a dollar!

Cheers,

Tim