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15-01-2011, 03:46 PM
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#1
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Registered User
Country: UK
Location: East Mids
Occupation: MD hydraulic/engineering company
Interests: Fast cars, bikes,quads, boats, going fast...etc
Boat name: Cheetah
Boat make: Hunton XRS37
Engines: Volvo D6 with DPR drives
Cruising area: So'hampton
Join Date: Sep 2006
Location: East Mids
Posts: 557
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Marathon
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
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15-01-2011, 04:04 PM
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#2
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Registered User
Country: UK
Location: East Mids
Occupation: MD hydraulic/engineering company
Interests: Fast cars, bikes,quads, boats, going fast...etc
Boat name: Cheetah
Boat make: Hunton XRS37
Engines: Volvo D6 with DPR drives
Cruising area: So'hampton
Join Date: Sep 2006
Location: East Mids
Posts: 557
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So Sorry Typing Error!!! Meant D Class
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15-01-2011, 04:11 PM
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#3
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Moderator
Country: England
Location: Cornwall.
Occupation: Retired.
Interests: Golf & liquid lunches with friends.
Join Date: Mar 2006
Location: Cornwall.
Posts: 2,303
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Quote:
Originally Posted by peterunwin
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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.
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15-01-2011, 04:52 PM
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#4
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Registered User
Join Date: Mar 2004
Posts: 6,891
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Get your credit card out!
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16-01-2011, 10:20 AM
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#5
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Registered User
Join Date: Jan 2008
Posts: 334
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What drives would be ideal for use with those ?
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16-01-2011, 10:33 AM
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#6
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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You need to double check the exhaust runner length for D class
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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16-01-2011, 10:36 AM
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#7
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Registered User
Country: UK
Location: East Mids
Occupation: MD hydraulic/engineering company
Interests: Fast cars, bikes,quads, boats, going fast...etc
Boat name: Cheetah
Boat make: Hunton XRS37
Engines: Volvo D6 with DPR drives
Cruising area: So'hampton
Join Date: Sep 2006
Location: East Mids
Posts: 557
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Quote:
Originally Posted by wickedtopspeed
What drives would be ideal for use with those ?
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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
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16-01-2011, 11:11 AM
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#8
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Registered User
Country: UK
Location: East Mids
Occupation: MD hydraulic/engineering company
Interests: Fast cars, bikes,quads, boats, going fast...etc
Boat name: Cheetah
Boat make: Hunton XRS37
Engines: Volvo D6 with DPR drives
Cruising area: So'hampton
Join Date: Sep 2006
Location: East Mids
Posts: 557
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Quote:
Originally Posted by Jon Fuller
You need to double check the exhaust runner length for D class
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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
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16-01-2011, 11:18 AM
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#9
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Senior Member
Country: UK
Boat name: Grip-O.co.uk
Engines: Steyr-Motors
Join Date: Jun 2005
Posts: 235
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Mastercraft told me they put up the money to get them built, so for there boats only at the moment.
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17-01-2011, 09:51 AM
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#10
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Moderator
Country: England
Location: Cornwall.
Occupation: Retired.
Interests: Golf & liquid lunches with friends.
Join Date: Mar 2006
Location: Cornwall.
Posts: 2,303
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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
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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.
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17-01-2011, 12:31 PM
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#11
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Registered User
Country: UK
Location: Pevensey Bay
Occupation: Teacher
Interests: photography
Cruising area: Pevensey Bay / Solent
Join Date: Jun 2006
Location: Pevensey Bay
Posts: 261
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going to upgrade yours then pete?
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17-01-2011, 01:41 PM
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#12
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BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
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Quote:
Originally Posted by Tom Stone
going to upgrade yours then pete?
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Not wishing to jump the gun on Peter, but this will be for his next "Project"!
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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18-01-2011, 02:00 AM
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#13
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Registered User
Join Date: Jun 2007
Posts: 90
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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
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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.
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18-01-2011, 08:23 AM
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#14
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Registered User
Country: UK
Location: East Mids
Occupation: MD hydraulic/engineering company
Interests: Fast cars, bikes,quads, boats, going fast...etc
Boat name: Cheetah
Boat make: Hunton XRS37
Engines: Volvo D6 with DPR drives
Cruising area: So'hampton
Join Date: Sep 2006
Location: East Mids
Posts: 557
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Quote:
Originally Posted by Tom Stone
going to upgrade yours then pete?
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How about a B28 for E class? amongst some other twin engined options
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18-01-2011, 08:24 AM
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#15
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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Quote:
Originally Posted by peterunwin
How about a B28 for E class? amongst some other twin engined options
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I know of an inboard one for sale
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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18-01-2011, 09:06 AM
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#16
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BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
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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.
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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.
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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18-01-2011, 01:39 PM
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#17
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Registered User
Country: UK
Location: East Mids
Occupation: MD hydraulic/engineering company
Interests: Fast cars, bikes,quads, boats, going fast...etc
Boat name: Cheetah
Boat make: Hunton XRS37
Engines: Volvo D6 with DPR drives
Cruising area: So'hampton
Join Date: Sep 2006
Location: East Mids
Posts: 557
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Quick Question
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
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18-01-2011, 02:20 PM
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#18
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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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?
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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18-01-2011, 08:40 PM
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#19
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Registered User
Join Date: Jun 2007
Posts: 90
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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.
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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
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18-01-2011, 08:44 PM
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#20
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Registered User
Join Date: Jun 2007
Posts: 90
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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
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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
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