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30-01-2011, 11:38 AM
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#321
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Registered User
Country: england
Location: surrey
Occupation: home extension specialist
Interests: boats, boats and more boats
Boat name: The Edge
Boat make: p21
Engines: 2.5 260
Cruising area: hayling island/littlehampton
Join Date: Jan 2010
Location: surrey
Posts: 888
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revenger
the boat looks awesome as is james, the colours do suite the boat, i would just have a white oval on the sides near the front, with some race numbers on, and leave it at that, thats just boring old me good luck
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30-01-2011, 12:26 PM
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#322
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Registered User
Join Date: Nov 2010
Posts: 176
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HI James i know the blower motor on your screen pic is going in the boat did that motor come out of a boat and did you get your carb sorted? my last 2 boats both ran blowers and i never had any problems at all with the blowers . I have a good book on blowers yours if you want it i can send it to you good luck with the build i can feel your bravo1 trembling from here paul ps see you on G/week
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30-01-2011, 12:48 PM
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#323
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Registered User
Country: Guernsey
Occupation: Engineering
Boat make: None, boo!
Engines: Turbines mainly!
Cruising area: The inside of my workshop!
Join Date: Mar 2008
Posts: 2,646
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Thanks again everyone, I'm over the moon with her! I've got the graphics drawn up now but they're just being put on with vinyl for now so I can change them about if I want to.
Paul, plan is to put the blower on, gonna run with the single 1000cfm for now as probably not gonna race her till next year. There's just one issue.
Turns out my block was an injection one with an eagle crank and hi-comp pistons. As a result I'm very tempted to stick to N/A power rather than having to start changing pistons, should be able to get 500hp ish, which would give the drive a much easier time and save fuel. That said, I just want the blower on there so badly to really finish her off nicely!! Decisions decisions...
James
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30-01-2011, 12:56 PM
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#324
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Registered User
Country: Netherlands
Location: Harderwijk
Occupation: See my website ;)
Interests: duh ......
Boat make: Seaquel 600XS & Seaquel 700XS
Engines: Merc 300XS
Cruising area: Veluwemeer/Ijsselmeer
Join Date: Dec 2006
Location: Harderwijk
Posts: 421
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James it looks realy nice , keep up te good work
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30-01-2011, 01:17 PM
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#325
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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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Looking VERY VERY nice James keep up the good work
Peter
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30-01-2011, 10:17 PM
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#326
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Registered User
Country: England
Location: Eastbourne
Occupation: Auto Gearbox Repair shop owner
Interests: Old motor boats & old aircraft
Boat name: Pisces
Boat make: 1970 Stapely Falcon 17'
Engines: Merc 115 1984
Cruising area: CMBA meets
Join Date: Mar 2009
Location: Eastbourne
Posts: 147
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Some transformation!
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31-01-2011, 12:53 AM
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#327
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Bikini Judge
Country: Canada
Location: Bancroft, Ontario
Occupation: Project Manager; Electrician; IT
Interests: engines, construction, solar, IT
Boat name: Under Tow
Boat make: Checkmate 28' offshore; Checkmate 17' Runabout
Engines: 2 x 496 BBCs; 1x 252 6cyl inline
Cruising area: Trent Waterway
Join Date: Jan 2010
Location: Bancroft, Ontario
Posts: 21
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Quote:
Originally Posted by larby
Paul, plan is to put the blower on, gonna run with the single 1000cfm for now as probably not gonna race her till next year. There's just one issue.
Turns out my block was an injection one with an eagle crank and hi-comp pistons. As a result I'm very tempted to stick to N/A power rather than having to start changing pistons, should be able to get 500hp ish, which would give the drive a much easier time and save fuel. That said, I just want the blower on there so badly to really finish her off nicely!! Decisions decisions...
James
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Hi James, damn she's looking great! A far cry from what was.
I can understand you wanting to go over the top, but going N/A first has some benefits - it gives you a chance to get used to the hull and flush out any bugs with the engine, drive and systems. Then you have another rush to look forward to - when you put the hammer down.
Cheers!!
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Soon, Very Soon
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31-01-2011, 06:00 PM
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#328
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Engine tester
Country: united kingdom
Location: Southend on Sea
Occupation: Construction
Interests: Gin & Women
Boat name: motorvator
Boat make: Revenger San Marino / Sunseeker Camargue 46 / Phantom 18/19/600
Engines: 502 mercruiser / Detroit 550s / 115 ProXS / Anything Borrowed
Cruising area: Thames, Southend
Join Date: Nov 2006
Location: Southend on Sea
Posts: 1,021
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"Lend us a motor Chaos"
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31-01-2011, 07:33 PM
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#329
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Registered User
Country: Guernsey
Occupation: Engineering
Boat make: None, boo!
Engines: Turbines mainly!
Cruising area: The inside of my workshop!
Join Date: Mar 2008
Posts: 2,646
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Ha ha, well as tempting as it was to paint the red stripe back on, I just about managed to resist!!
Sadly it looks like she's not gonna be getting the blower, no reasonably priced way of getting the comperssion down on the 502
On the bright side, I'll build a kick-ass N/A motor!!
James
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01-02-2011, 07:16 AM
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#330
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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 larby
Sadly it looks like she's not gonna be getting the blower...
James
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Realistically, probably the best decision you've ever made.
This excellent decision will only be surpassed the day you decide to buy a big Phantom.
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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01-02-2011, 08:08 AM
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#331
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Registered User
Country: Guernsey
Occupation: Engineering
Boat make: None, boo!
Engines: Turbines mainly!
Cruising area: The inside of my workshop!
Join Date: Mar 2008
Posts: 2,646
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Ha ha, it's all very confusuing deciding what to do, but I must admit my sensible side is screaming at me not to fit the blower so it's more reliable! I wish I had a standard motor now really so I could fit into a Marathon class!
Wouldn't mind a nice 28... When funds allow!
James
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01-02-2011, 05:25 PM
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#332
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Registered User
Join Date: Nov 2010
Posts: 176
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Hi James wot is the com/R on your 502?
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01-02-2011, 06:09 PM
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#333
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Registered User
Country: Guernsey
Occupation: Engineer
Interests: Restoration
Cruising area: Channel Islands & northern French coast
Join Date: Jan 2009
Posts: 154
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its 8.81 - 1
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01-02-2011, 06:42 PM
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#334
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Registered User
Country: Guernsey
Occupation: Engineering
Boat make: None, boo!
Engines: Turbines mainly!
Cruising area: The inside of my workshop!
Join Date: Mar 2008
Posts: 2,646
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There y go!
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01-02-2011, 08:58 PM
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#335
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Registered User
Join Date: Nov 2010
Posts: 176
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Hi james i ran 8.50 to 1 with 5 pounds boost no intercooler with prob the worst blower for generating heat with no problem, . i am not sure but the blower in your pic looks like a 250? and will be turning much slower than mine was to make 4/5 pounds = less heat plus you have that luvly cooler got to be worth a point i say you will end up with a nice docile boat at cruise and lots of grunt when you need it . I have run much higher com 9.5 , with 8 psi but had coolers and( centrifugal )blower = less heat,had to get the dictionary for that one , all though this was in a car and would be under a lot less constent stress , Bravo 1 might not agree with me
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01-02-2011, 09:34 PM
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#336
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Registered User
Country: Guernsey
Occupation: Engineering
Boat make: None, boo!
Engines: Turbines mainly!
Cruising area: The inside of my workshop!
Join Date: Mar 2008
Posts: 2,646
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Yeah see this is the thing, I'm not sure if what works on a car will work on a boat.
As I understand it, effective C/R has to be below 12:1 for pump gas. With a starting point of 8.81:1, this equates to absolutely no more than 4psi boost, and to me that doesn't seem like it's worth the potential aggro?
Considering that I'm only after 600hp absolute tops for now, I'm thinking it's just going to be easier to go with building a N/A motor? Aside from the potential of blowing it up, my drive would live much longer!
Paul, yeah, it's a 250 with a superchiller.
Cheers, James
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01-02-2011, 10:55 PM
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#337
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Registered User
Join Date: Nov 2010
Posts: 176
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The 8.5 to 1 boost 5psi no cooler was in chevy powerd boat good luck with wot ever you do James i will let you know how my bravos turn out when i get them back from mr gadgets
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02-02-2011, 08:54 AM
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#338
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Registered User
Location: falmouth
Boat name: purple haze
Boat make: vector xr 24
Engines: cosworth yb turbo 300
Join Date: Apr 2009
Location: falmouth
Posts: 151
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Boost it up
Boat,s looking awsome James well done a trully epic effort.On the supercharger I would say the motor would definatly be safe around 6-7psi boost and possible a pound or two more with care on the final setup this will give loads more power and works as well as a low comp motor running 9-10 pound boost ,none of this will help if you think the drive,s going to go crunch,but it will all look so nuts with the charger poking out the top and there is nothing like the surge of power from blown motors to stretch your smile from ear to ear . GO BLOWN
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02-02-2011, 09:58 AM
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#339
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Registered User
Join Date: Mar 2004
Posts: 6,891
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James knows my view on this.
Do whatever he fancies - blown, turboed, nitrous, whatever.
But make sure whatever path he follows, do it properly and don't cut corners on the motor build.
That means potentially (but not necessarily) less hp on a NA motor, but spending the money where needed to make sure it's robust and reliable - spend the money on the "hard" parts. Better that than doing a budget blown build and ending up with a self disassembling engine.
I sincerely hope I am capable of taking my own advice.
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02-02-2011, 10:30 AM
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#340
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Registered User
Country: England
Location: Surrey
Occupation: Subsea Design Engineer
Boat name: The Mutz Nuts/Beyond Obsession/HoneyRider
Boat make: Phantom 20, Phantom 25, Cigarette 39 TopGun Unlimited
Engines: Mercury Promax 300 Madefi, Twin Mercury 200XS, Twin Merc Racing 525 EFI's
Cruising area: Eastney/Portsmouth
Join Date: Feb 2005
Location: Surrey
Posts: 757
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Gorgeous! Just plain Gorgeous!
Quote:
Originally Posted by boatnut
the boat looks awesome as is james, the colours do suite the boat,
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I agree with boatnut.....She's looking absolutely awesome and the colour really compliments the boat BIGTIME!
In my opinion it actually makes the hull look like a much later design.
Not sure about graphics mind......I think they give it a more classic look.
But, I guess it depends what you're looking for, right!
Hats off you anyway matey......you're doing a great job!
It's a credit to you!
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