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Old 04-10-2020, 07:59 PM   #1
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Phantom 28 - crackerbox

Hi All,

New to the forum but not new to boating or the sport.

I purchased the Phantom 28 Crackerbox from Mike at Lancing Marine. I recently started to think about what to do with her, she hadnít seen water for circa 10 yrs I believe. I was going to put her in as she stands for the end of this year and get a feel for her. But sadly the sealer around all the transom fittings has perished with age and its and engine and drive out job to sort. This doesnít phase me as I have boating background, but I wondering now if Iím going to this effort do I put the old 6 cylinder Ford and LM surface drive back in or repower to the LM surface drive or swap to an outdrive.

Currently I believe she runs around 40+ knots with a 345hp tweaked Ford and LM drive. This seems a little slow for the phantom hull, Iím wondering how efficient to set up is? I have an option on a pair of low hours Yanmar 370hp 8LVs and drives.. I think two might be make her a little stern heavy at 435kg each plus 112kg shield and drive.

Iím not looking for an out and out racing boat but plus 50knots would be my ideal aim to allow cruising at 40.

I believe there is only one others twin inboard diesel phantom 28, from the limited info I can find she runs 60+? with a pair of hammerhead V8s but canít find a total weight or power of the package.

Mike has been fantastic and is a total wealth of knowledge about the Phantoms, it pains me to change up a totally original boat for marginal gains. But If I can turn her into something that pays homage to the original with a modern heart or hearts then Iím all ears.

Thank in advance
Josh
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Old 05-10-2020, 07:24 PM   #2
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Country: England
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Occupation: BMW Technician
Cruising area: South coast & Thames

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Hi Josh,
Cant offer much advice or knowledge but all i do know is Jon fullers P28 has a pair of diesels on legs. The links below are a few videos from his channel that you might find helpful. Look forward to following the project

Max



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Old 05-10-2020, 08:33 PM   #3
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Country: UK
Location: Portsmouth
Occupation: Marine Engineer
Interests: everything fast
Boat make: Phantom 28/phantom 18
Engines: 2x Mercury 3.0 225 optimax/yamaha 85
Cruising area: Solent

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Old 05-10-2020, 08:39 PM   #4
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Thank you very much
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Old 11-10-2020, 02:22 PM   #5
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Country: Uk
Location: Staffordshire
Occupation: Towbar specialist
Interests: Boats and motorbikes
Boat name: Redpepper
Boat make: Searay 340ec 2x v8 marine diesel hammerheads supercharged
Engines: 90hp e- tec 115hp yamaha
Cruising area: Conwy

Join Date: Nov 2016
Location: Staffordshire
Posts: 12
Hi
I have run a pair off 300hp hammerheads for 17years on shafts 63a boxes what do you want to know I fitted them have rebuilt one off them ?
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Old 11-10-2020, 02:25 PM   #6
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Country: Uk
Location: Staffordshire
Occupation: Towbar specialist
Interests: Boats and motorbikes
Boat name: Redpepper
Boat make: Searay 340ec 2x v8 marine diesel hammerheads supercharged
Engines: 90hp e- tec 115hp yamaha
Cruising area: Conwy

Join Date: Nov 2016
Location: Staffordshire
Posts: 12
I run two v8 300hp supercharged hammer heads fitted them myself in 2005 on 63a boxes shaft driven crusdriven
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Old 14-10-2020, 11:23 PM   #7
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Country: england
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Boat make: scorpion 8.1
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Quote:
Originally Posted by Max Bushell View Post
Hi Josh,
Cant offer much advice or knowledge but all i do know is Jon fullers P28 has a pair of diesels on legs. The links below are a few videos from his channel that you might find helpful. Look forward to following the project

Max



Leviathan seemed to sit low aft. I am sure you may find some old comments on here from mr fuller about weight balance.

Good luck with your venture. Iíd love twin engines just for marina manoeuvring, although heaps of other reasons too.
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