Inboard Diesels-Subaru a possibility?

[Lovey80]

I see that VW is now in the inboard Diesel game and just recently looking at the new Subaru 2.0L Turbo Boxer Diesel punching out 108kw @ 3600rpm and 350nm @ 1800rpm, this may become a consideration for a boat builder. Being a boxer design it may be that little bit smaller in dimensions to get it to sit under the deck in some trailer boats? 108kw is about 155hp+/-?

your thoughts?

[TimiBoy]

VW have been at it since the War, but they've recently done a deal with Mercruiser, so we now see their gear here.

I've been wondering what their diesels are like. Are they the goods? Are they "just a marinised diesel?" I will certainly consider either the V6 or the V8 for my upcoming new tub, but will probably stick with the Yanmar...

Cheers,

Tim

[lethal098]

The Subaru boxer Diesel would not be a good one to have on a boat, They have complicated the diesel with a DPF and way too much electronics, Stick with the known brands, Yanmar, Steyr etc. Vw not sure yet, would give them a few years and see what happens.

cheers Lee

[Midnight]

I have always thought that the Suby motors would be great in a boat. Low profile for easy installation under deck as Lovey said, and plenty of low down torque even with the petrols. Remember the turbo petrol ones turn out over 200kw and massive amounts of torque with great reliability.

I would be very interested in a diesel version.

Since the old flat Perkins went the way of the dodo, there has been no other "low profile" engines made.

Cheers,
Myles

[Midnight]

Timi,
Most of the diesels available are just marinised auto or truck engines anyway, Yanmar 6lp(Landcruiser) 6bt Cummins (Dodge trucks), larger TAMD series Volvos.

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.

How well they are marinised is the key.

But I reckon you are on the right path Timi with choosing a diesel inboard package for you new boat. Great economy, better ride, great longevity if they are propped correctly (+100 to +150rpm over rated rpm) and well looked after.

You will never go back to outboard power for a maxi trailer boat.

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

Cheers,
Myles

[lethal098]

Subaru petrol engine yes if you could find someone to marinise it. Seeing the failures go thru the workshop i would not have one in my boat. being at sea is all about reliabilty and periodic maintenance, the oil leaks that develop on some of these motors i would hate to be pulling an engine out every 12 months to fix.

The Subaru Diesel engine is experiencing a lot of problems at the moment due to the DPF type system that is part of the engine system, They are a very complicated engine and have a lot of sensors and systems that would not be very kind to a marine environment, the fuel qulaity would be the first concern, then the list goes on.

The inboard diesels i have had experince in is, Caterpillar, Volvo and Steyr. Out of all of these the Steyr (256HP)wins hand over feet for the smaller boats either in single or twin configuration and for the larger boats the volvo would be my pick.

Cheers Lee

[TimiBoy]

Timi,
Most of the diesels available are just marinised auto or truck engines anyway, Yanmar 6lp(Landcruiser) 6bt Cummins (Dodge trucks), larger TAMD series Volvos.

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.

How well they are marinised is the key.

But I reckon you are on the right path Timi with choosing a diesel inboard package for you new boat. Great economy, better ride, great longevity if they are propped correctly (+100 to +150rpm over rated rpm) and well looked after.

You will never go back to outboard power for a maxi trailer boat.

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

Cheers,
Myles

Read it and weep, Baby!

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

Just a couple of ducks to line up and my 9 metres of fishing heaven will be on the way!!!



Cheers,

Tim

[camboy]

VW have been at it since the War, but they've recently done a deal with Mercruiser, so we now see their gear here.

I've been wondering what their diesels are like. Are they the goods? Are they "just a marinised diesel?" I will certainly consider either the V6 or the V8 for my upcoming new tub, but will probably stick with the Yanmar...

Cheers,

Tim

Hi Tim,
Obviously a little early to comment, however suffice to say, if the marine versions are as good as the VW diesels I have had the pleasure of owning in my previous and current VW Touaregs they will be great. (V6tdi 3.0l 176kw and 550nm torque)
I guess time will tell.
Cheers,
Camboy

[Midnight]

Thanks Lee,
What sort of failures do you see with the Suby motors? Also, with the diesel one, what is DPF? Is that a Suby term? Any common rail diesel needs ultra clean fuel. The cr@p Racor filtration that is standard for most boat builders doesnt go close to being good enough. As you know, they will not handle any water or gunge at all.

Timi, what 9m beast have you got on the way? Have you done the deal on the Yanmar yet? Just make sure you prop it, fully loaded, full fuel,water, ice , men, gear, clears up and make at least 100 rpm over rated. Then she will run nicely for many years. Also check out Tony Athens "Fueltration" system as a standard of fuel filter set up for your new boat. Include the squeeze bulb for easy priming after filter changes. I have one on mine and it is a god send.

http://www.sbmar.com/Products/SM-FF_Main.php

Cam, my Uncle has the R50 diesel, and man that thing has torque like I have never experienced! ( I think they are 850nm??) Now that motor in my Berty would be something special!

Cheers,
Myles

P.S Timi, join boatdiesel.com and read read read. Also have a good look through Tony's website.

[TimiBoy]

I was tossing up between an Origin and a Riptide, but I think Riptide is going to win. Whenever I go out in Rhys Flamin' Riptide, I find myself saying she's the best 6 metre boat I've ever ridden.

Dave's Origin, Alchemy, was stunning too - it's a close race. But I must line up those ducks before I say "the race is on!"

Gimme two months, maybe less, here's hoping. I look forward to running the thread.

Cheers,

Tim

[lethal098]

Myles,

DPF stand for diesel particulate filter, this is part of the exhaust system on most modern diesel motors. Most Manufacturers have been able to get it right but Subaru has yet to be perfect it. A dpf Requires periodical Regeneration, this occurs once the exhaust temperature reaches a pre determined point, it then burns off all carbon and soot gathered in it. Imagine driving your car every day Albany creek to Brisbane city, around 50-70km round trip, traffic and about max 60km/h. Over approx 3 weeks the dpf would have accumulated enuf deposit to require a regeneration, a light will show up instructing driver to perform this.You need to then drive the car at 75km/h and above for minimum 15-20 mins, This does not guarantee a regeneration during this time. It may happen it may not. If the vehicle will not regenerate on its own its off to the dealer you go, Not warranty and about $60 to make it happen. Another clincher to this is the oil dilution rate, most engines not running at higher speeds for longer periods of time will generally need there oil changed every7-10000km, another $280 gone.
This is just the way the car engine operates due to emission standards and the like, if it was a straight thru exhaust not sure what emission levels would be like, but you would definately not want one of these in a boat that trolls along and very little Wide open throttle.

Failures well where do i start, big end bearings, oil consumption, head gaskets and general oil leaks. Now some of these are limited but some of them are quite common with some age to them, a lot depends on how well they are maintained, the service schedules are 6months 12500 km, stray from this and expect some failures down the track.

And yes bad fuel is the biggest killer of any diesel engine and the racor system is certainly not up to par, give a modern common rail diesel engine a little bit of water and bye bye engine.

Cheers Lee

[Midnight]

Good luck with the search and the spec Timi, good fun I am sure and the result will be worth it all.

Thanks Lee, any turbo diesel car I owned would get plenty high enough EGT's to burn off the soot


Cheers

[lethal098]

Myles,

Yep i am the same but some people buy turbo diesels for the wrong reasons, IE mums shopping car, just wont work in some modern day diesels.

Are you fishing the comp this weekend??

[MEGA'bite]

A new boat thats great timi, all you need to no now timi is how to fish _

[PinHead]

I was tossing up between an Origin and a Riptide, but I think Riptide is going to win. Whenever I go out in Rhys Flamin' Riptide, I find myself saying she's the best 6 metre boat I've ever ridden.

Dave's Origin, Alchemy, was stunning too - it's a close race. But I must line up those ducks before I say "the race is on!"

Gimme two months, maybe less, here's hoping. I look forward to running the thread.

Cheers,

Tim

bloody big difference between a 6 m boat and a 9m boat..like chalk and cheese.