Marathon

peterunwin · 15-01-2011, 03:46 PM

Hi All,
How about a pair of ILMOR OPS MV8 6.2L for a C class marathon boat?
see link.

http://www.ilmor.com/marine/mv8specs.html

Peter

peterunwin · 15-01-2011, 04:04 PM

So Sorry Typing Error!!! Meant D Class

Mike Lloyd · 15-01-2011, 04:11 PM

Quote:

Originally Posted by peterunwin

Hi All,
How about a pair of ILMOR OPS MV8 6.2L for a C class marathon boat?
see link.

http://www.ilmor.com/marine/mv8specs.html

Peter

They would actually fit Class D (12.5 total) wouldn't they - just? 430hp as against the 320hp for the small block Merc, there is no contest.

A pair of them would make the RING 34 fly!!

ML.

Matt · 15-01-2011, 04:52 PM

Get your credit card out!

wickedtopspeed · 16-01-2011, 10:20 AM

What drives would be ideal for use with those ?

Jon Fuller · 16-01-2011, 10:33 AM

You need to double check the exhaust runner length for D class

peterunwin · 16-01-2011, 10:36 AM

Quote:

Originally Posted by wickedtopspeed

What drives would be ideal for use with those ?

Ilmor are looking at a number of options at the moment and i should have prices soon. The engine in the link has a forward and reverse gearbox so i think would suit an arneson installation very nicely, provided you have a stepped hull.

Peter

peterunwin · 16-01-2011, 11:11 AM

Quote:

Originally Posted by Jon Fuller

You need to double check the exhaust runner length for D class

The standard exhaust manifolds and risers are cast iron and have a built in catalyst so the plan would be to build log style headers to suit the marathon rules and these would be offered as a catalogue option by Ilmor, this would also release a little more power and allow the use of a wilder camshaft, all still i think within the rules.

Peter

2-XS-IF · 16-01-2011, 11:18 AM

Mastercraft told me they put up the money to get them built, so for there boats only at the moment.

Mike Lloyd · 17-01-2011, 09:51 AM

Quote:

Originally Posted by peterunwin

The standard exhaust manifolds and risers are cast iron and have a built in catalyst so the plan would be to build log style headers to suit the marathon rules and these would be offered as a catalogue option by Ilmor, this would also release a little more power and allow the use of a wilder camshaft, all still i think within the rules.

Peter

It just got even better! Now, who do I know who has some money? I know, I'll tap up that old geezer Mike Ring.

ML.
.

Tom Stone · 17-01-2011, 12:31 PM

going to upgrade yours then pete?

Cookee · 17-01-2011, 01:41 PM

Quote:

Originally Posted by Tom Stone

going to upgrade yours then pete?

Not wishing to jump the gun on Peter, but this will be for his next "Project"!

Boatless-Again · 18-01-2011, 02:00 AM

Quote:

Originally Posted by peterunwin

Ilmor are looking at a number of options at the moment and i should have prices soon. The engine in the link has a forward and reverse gearbox so i think would suit an arneson installation very nicely, provided you have a stepped hull.

Peter

But the Arnesons have their own gearbox with the RH and LH rotation in them. These "Ski Boat" motors use a ZF gearbox in the form of a "V-Drive" to handle the rotation and they eat more hp than the Arneson.

peterunwin · 18-01-2011, 08:23 AM

Quote:

Originally Posted by Tom Stone

going to upgrade yours then pete?

How about a B28 for E class? amongst some other twin engined options

Jon Fuller · 18-01-2011, 08:24 AM

Quote:

Originally Posted by peterunwin

How about a B28 for E class? amongst some other twin engined options

I know of an inboard one for sale

Cookee · 18-01-2011, 09:06 AM

Quote:

Originally Posted by Boatless-Again

But the Arnesons have their own gearbox with the RH and LH rotation in them. These "Ski Boat" motors use a ZF gearbox in the form of a "V-Drive" to handle the rotation and they eat more hp than the Arneson.

Not all of them ............... the 6 kit and the 7M have transmissions, the 6 and 8's don't have transmissions so you still need a gearbox to handle forward neutral and reverse.

peterunwin · 18-01-2011, 01:39 PM

iF I WERE TO BUY LS3 CRATE ENGINES FROM GM MARINISE THEM MYSELF AND OFFER THEM FOR SALE TO OTHER TEAMS WOULD THEY QUALIFY FOT MARATHON?

Peter

Jon Fuller · 18-01-2011, 02:20 PM

For classes up to D, that might be a bit 'grey', as they're supposed to be production based engines from mainstream marine engine suppliers.

The reality is, who could tell?

Boatless-Again · 18-01-2011, 08:40 PM

Quote:

Originally Posted by Cookee

Not all of them ............... the 6 kit and the 7M have transmissions, the 6 and 8's don't have transmissions so you still need a gearbox to handle forward neutral and reverse.

The ASD6, ASD7M and ASD8 are all available in RH or LH rotations with reduction one still do need a transmission to handle the f-n-r duties but not reduction nor rotation in the transmission which makes the choice of transmission the same as others using the BW transmission the larger drives are all for diesel and they do not apply for these boats

Boatless-Again · 18-01-2011, 08:44 PM

Quote:

Originally Posted by peterunwin

iF I WERE TO BUY LS3 CRATE ENGINES FROM GM MARINISE THEM MYSELF AND OFFER THEM FOR SALE TO OTHER TEAMS WOULD THEY QUALIFY FOT MARATHON?

Peter

Why not? GM sells the motors to a lot of different companies that simply put a intake, exhaust and electronics on the engines. The innards are all the same regardless of the color on the outside so if you can get good pricing from GM and offer your own name and such why would you not be allowed to compete as a manufacturer Ilmor is not making their own marine motor as all their offerings are car motors with a marine exhaust and acc