Marinised Aston Martin V12.

Jon Holmes · 25-02-2011, 02:09 PM

Anyone seen an Aston Martin V12 fitted in a boat?

I keep finding myself wanting to put a V12 in the Velocity.

Lightweight, good power and 80% of its torque available at below 2,000rpm's.

Oh, and did i say it was English?

Tony Davis · 25-02-2011, 02:16 PM

is it? .......

http://www.just-auto.com/news/aston-...e_id77074.aspx

Jon Holmes · 25-02-2011, 02:26 PM

Quote:

Originally Posted by Jon Holmes

Oh, and did i say it WAS English?

From 1999 to 2005 it was!

Martin The Talker · 25-02-2011, 04:42 PM

Aston Martin engines were marinised in the late 1960's by a long defunct outfit called Offshore Powerboats Ltd., of Brixham, Devon.
A Martin Lees was, I think, the man behind it all, if my old memory serves me correctly.
They bought Chris Tremlett moulded wooden hulls, & fitted them out, & as far as I know, & marinised & fitted the Aston Martins, giving, I think, 300 bhp each.
However, the boat or boats never performed, due to ... ... ... engine problems !
Not sure of many more details, but the outfit folded after about three years I seem to remember !

timtap · 25-02-2011, 04:55 PM

larby · 25-02-2011, 05:41 PM

I don't know much about this, but it is something I'm interested in...
I would've thought an engine designed to be this high performance wouldn't fare well with the constant high RPM seen in a high performance marine environment? Could there be issues with reversion due to the cam profile?

That said, I love the idea of a V12 in a boat, and I can definately see why you're wanting to do it, but doing something this outside the box usually ends in trouble for me!!

I say go for it!!

James

pain -tera 28 · 25-02-2011, 05:47 PM

Quote:

Originally Posted by Jon Holmes

Anyone seen an Aston Martin V12 fitted in a boat?

I keep finding myself wanting to put a V12 in the Velocity.

Lightweight, good power and 80% of its torque available at below 2,000rpm's.

Oh, and did i say it was English?

Sounds like a intresting project about to be born GOOD TO BE DIFFERENT

Jon Holmes · 25-02-2011, 06:01 PM

James, the V12 in my Aston red lines at 7000rpm but you never really need to go there unless you want to sound like a screaming Ferrari! The motor makes max hp at about 5,500rpm and produces 80% of available torque below 2,000rpm so it should be relatively unstressed in a pleasure use application. I guess a set of high mounted stelling type exhausts would take care of the possibility of reversion.

Remember its producing around the same power as the new GM LS V8 smallblock's but in a smoother running V12.

Where can i get some good reading material regarding marinisation?

Ben · 25-02-2011, 06:40 PM

I wonder if there are any old Bonner V12s lying around?

Jon Fuller · 25-02-2011, 07:13 PM

Swipewipes came very close to having a pair of 6Litre V12's from Aston Martin Racing (Prodrive) in the milder of the two LeMans setups. Prodrive came down for the day and came out boating to assess the requirements of the install, but back then (2007) the financial climate was just heading into a flat spin and nothing came of it. They wanted us to run on biofuel, then announced we'd need to carry 40% more than regular fuel to get the same oomph. That was a lot of extra fuel to carry on what was already gonna be some big tanks for RB08.
They were to be circa 600hp.

Gordon McMath · 25-02-2011, 07:16 PM

Can't beat a V10 !

larby · 25-02-2011, 07:25 PM

Quote:

Originally Posted by Jon Holmes

James, the V12 in my Aston red lines at 7000rpm but you never really need to go there unless you want to sound like a screaming Ferrari! The motor makes max hp at about 5,500rpm and produces 80% of available torque below 2,000rpm so it should be relatively unstressed in a pleasure use application. I guess a set of high mounted stelling type exhausts would take care of the possibility of reversion.

Remember its producing around the same power as the new GM LS V8 smallblock's but in a smoother running V12.

Where can i get some good reading material regarding marinisation?

Hmmm, sounds promising then, the rev range is 'normal' too, so propping and ratios won't be a headache. Normally at this point I ask myself 'why hasn't someone else done it?'
If you've found somewhere you can get one cheap, I say go for it!! Could somewhere like lancing help with marinising?

James

Jon Fuller · 25-02-2011, 08:22 PM

Quote:

Originally Posted by Ben

I wonder if there are any old Bonner V12s lying around?

You need a new anchor?

Ben · 25-02-2011, 09:16 PM

Quote:

Originally Posted by Jon Fuller

You need a new anchor?

Nothing like a bit of mediocre power with the added benefit of unreliability.

Jim Brooker · 26-02-2011, 02:14 PM

Quote:

Originally Posted by Ben

Nothing like a bit of mediocre power with the added benefit of unreliability.

I am very interested Ben in what you know about the Jaguar V12 Engines to pass those sort of comments. !!!!

Ben · 26-02-2011, 03:51 PM

Quote:

Originally Posted by Jim Brooker

I am very interested Ben in what you know about the Jaguar V12 Engines to pass those sort of comments. !!!!

I stand corrected. After consulting 'Searace', I see that the engines produced very good power for the time and won a number of races.

Jim Brooker · 26-02-2011, 04:48 PM

Quote:

Originally Posted by Ben

I stand corrected. After consulting 'Searace', I see that the engines produced very good power for the time and won a number of races.

In-fact I raced the Jaguar V12 for nearly 4 years, 2 of those with the Bonner built ones and 2 years with them being built by Geoff Richardson in St Neots, and we NEVER had a problem with the Jaguar parts of the engine, we had big problems with the Turbo Inter-coolers, they kept splitting and dumping sea water on top of the pistons and those Jaguars engines full with water still kept ruining and finished racing.
The Bonner engines ranged from 700 to 900 bhp with boost from 20 to 32 psi.
The Richardson Engines 780 bhp 22 psi much more reliable.
Jimmy

Alacrity · 26-02-2011, 06:42 PM

Quote:

Originally Posted by Tony Davis

is it? .......

http://www.just-auto.com/news/aston-...e_id77074.aspx

Someone shoot me down here, but didn't the Aston V12 start out as 2 Mondeo V6's glued together? And wasn't the Mondeo V6 a development of the Mazda V6? Don't get wrong here I am happy to be shot down as, for me, the Aston is the ultimate in motor cars. Having the factory as a customer of mine helps a bit to me liking them as well!

Carl · 26-02-2011, 07:45 PM

the mondeo v6 was a mazda,dont know about the rest

Jon Holmes · 26-02-2011, 08:55 PM

That is correct. The AM V12 was conceived from the idea of doubling the size of the Mondeo 3.0l V6 (an engine Ford obtained through their joint venture with Mazda) and developed by those extremely clever chaps at Cosworth Engineering. I dont believe the block is constructed from two cobbled together V6's though as it is a one piece aluminium casting.

Regardless of its origins the result is a beautiful V12 Engine.