Boatmad.com


Reply
 
Thread Tools Display Modes
 
Old 27-11-2012, 12:32 PM   #1
Registered User
 
Country: channel islands
Location: guernsey
Boat name: adrenalin
Boat make: ring 21c
Engines: merc 150 pro xs
Cruising area: channel islands

Join Date: Nov 2011
Location: guernsey
Posts: 34
race preping mariner

hi all i am going to be using my mariner 2.5 200 carb for racing next year and i would like to put 16amp electrics on and replace the reeds with carbon ones.

i know that i need to replace the stator and the flywheel for the electrics but i need to know if there is anuthing else that needs replacing as well.

i would also like to know what a good make/brand of carbon reeds would be.

any help would be appreciated.
__________________

Phill_Dewe is offline   Reply With Quote
Old 27-11-2012, 12:49 PM   #2
Registered User
 
Renegade's Avatar
 
Country: UK
Location: london
Occupation: Powerboat Skipper
Interests: Boats , bikes!
Boat name: Renegade
Boat make: GPV-RENEGADE
Engines: 150 HO etec
Cruising area: Thames, south coast, anywhere!

Join Date: Dec 2008
Location: london
Posts: 2,330
Boysen reeds is my prefered brand.
__________________

__________________
Im re branding pepper spray as Arsehole Repellant.im going to make a fortune.
Renegade is offline   Reply With Quote
Old 27-11-2012, 01:24 PM   #3
Registered User
 
RossM's Avatar
 
Boat make: Phantom 23

Join Date: Mar 2006
Posts: 1,650
Send a message via MSN to RossM
Replace the diaphram in the mechanical fuel pump
New fuel filter
New Spark plugs

Check timing @ WOT (which you will have to do anyway if you are changing stator/trigger/flywheel to 16amp.

Would be a good idea to check compression too & do a plug chop @ WOT to make sure all cylinders are burning evenly.
RossM is offline   Reply With Quote
Old 27-11-2012, 01:35 PM   #4
Registered User
 
Country: uk
Location: salcombe
Occupation: semi retired
Interests: racing(middle east class 3 6l)
Boat name: still no worries
Boat make: phantom18
Engines: 2.5 efi
Cruising area: salcombe

Join Date: Dec 2007
Location: salcombe
Posts: 499
The engine mounts :- nylon or ally and all the bushes !
(More important than electrics or reeds, I've done all of the above on a 2.5 mariner and 20thou off the heads)
still no worries is offline   Reply With Quote
Old 27-11-2012, 03:31 PM   #5
Registered User
 
Big Dutch's Avatar
 
Country: Guernsey Channel Isles
Location: West Coast
Occupation: Hotelier
Interests: Powerboat racing
Boat name: Vodkatini,Cap Camarat,Easy RiderSuper Rider & Hirrondelle
Boat make: Phantom 21,Jeaneau 925 Avenger19.Lorne Campbell Slipstream Tremlett 21.Tigershark 21
Engines: Volvo 5 litre,Merc 115 Tower,Twin 250 Suzukis and 145 Mercruiser LX
Cruising area: Channel Islands and French coast

Join Date: Jan 2009
Location: West Coast
Posts: 612
Spray the engine black and put Mercury stickers on it !
__________________
Guernsey - The home of offshore powerboat racing
Big Dutch is offline   Reply With Quote
Old 27-11-2012, 04:16 PM   #6
Registered User
 
Country: UK

Join Date: Jun 2006
Posts: 1,235
Not very helpful Big Dutch but funny.
Jon Holmes is offline   Reply With Quote
Old 27-11-2012, 04:19 PM   #7
Registered User
 
Country: channel islands
Location: guernsey
Boat name: adrenalin
Boat make: ring 21c
Engines: merc 150 pro xs
Cruising area: channel islands

Join Date: Nov 2011
Location: guernsey
Posts: 34
The engine is black i am going for a bridgeport style cowl for next year and is on a offshore mid so mounts aren't a worry just wanted to know if I needed to do more than replace the stator which it seems I do. Thanks
Phill_Dewe is offline   Reply With Quote
Old 27-11-2012, 04:55 PM   #8
Registered User
 
Country: england
Location: the grim north
Occupation: robot
Cruising area: tyne

Join Date: Nov 2004
Location: the grim north
Posts: 905
Remove the regulators and replace with a 16 amp rectifier. Dump the oil injection and timing advance module.
__________________
Speed costs weight so what do we cut off first
sinkunit0 is offline   Reply With Quote
Old 27-11-2012, 06:44 PM   #9
Registered User
 
Country: channel islands
Location: guernsey
Boat name: adrenalin
Boat make: ring 21c
Engines: merc 150 pro xs
Cruising area: channel islands

Join Date: Nov 2011
Location: guernsey
Posts: 34
As I recall it you ran with a silver alien cowl for a while big d and I have already removed the oil injection
Phill_Dewe is offline   Reply With Quote
Old 27-11-2012, 07:21 PM   #10
Registered User
 
Country: uk
Location: salcombe
Occupation: semi retired
Interests: racing(middle east class 3 6l)
Boat name: still no worries
Boat make: phantom18
Engines: 2.5 efi
Cruising area: salcombe

Join Date: Dec 2007
Location: salcombe
Posts: 499
Ok I'll revise my earlier post just check the bushes, where the trim ram connects to the saddle is the favourite for play and I would still take 20 thou off the heads!
still no worries is offline   Reply With Quote
Old 27-11-2012, 07:59 PM   #11
Registered User
 
Paul E's Avatar
 
Country: Guernsey
Occupation: Postie
Interests: Heavy Heavy Metal
Boat name: Slayer II, Slayer, Pen15
Boat make: Phantom 19G-R, Bernico F2 Extreme, Ring 15
Engines: Evinrude 115HO, Yam 90
Cruising area: Channel Islands

Join Date: Aug 2009
Posts: 1,457
Speak to Lee Gorvel mate he did mine when I cooked the 40amp stuff. We did it in the pits so it wasn't hard
Paul E is offline   Reply With Quote
Old 27-11-2012, 08:06 PM   #12
Registered User
 
Paul E's Avatar
 
Country: Guernsey
Occupation: Postie
Interests: Heavy Heavy Metal
Boat name: Slayer II, Slayer, Pen15
Boat make: Phantom 19G-R, Bernico F2 Extreme, Ring 15
Engines: Evinrude 115HO, Yam 90
Cruising area: Channel Islands

Join Date: Aug 2009
Posts: 1,457
Also I just got some carbon reeds for my Evinrude from Chris Carson Marine in the US. Read very good things about his reeds, they were well priced and only $5 shipping. Search for him on ebay.com, there's a few different version depending on how high you want to rev
Paul E is offline   Reply With Quote
Old 29-11-2012, 08:55 PM   #13
CB1
Registered User
 
CB1's Avatar
 
Location: poole dorset

Join Date: Mar 2004
Location: poole dorset
Posts: 868
Dont be tempted to switch to electric fuel pump, they are more trouble than they are worth. Just make sure that the mechanical pump is in good condition and both diaphrams are good.
CB1 is offline   Reply With Quote
Old 29-11-2012, 09:06 PM   #14
Registered User
 
Country: channel islands
Location: guernsey
Boat name: adrenalin
Boat make: ring 21c
Engines: merc 150 pro xs
Cruising area: channel islands

Join Date: Nov 2011
Location: guernsey
Posts: 34
sound advice cb1 wasnt going to anyway no point adding in suff you dont need when it is just another thing that can go wrong
Phill_Dewe is offline   Reply With Quote
Old 29-11-2012, 10:11 PM   #15
Trade Member
 
Country: United States
Location: South Texas. USA
Occupation: Own JSRE ( Jay Smith Racing Engines )
Interests: ACCELERATION (anykind )

Join Date: Jan 2006
Location: South Texas. USA
Posts: 244
Cut heads to yeild 145 lbs cranking at sea level, I use TDR reed valves in my all out race as well as recreational engines they are bullet proof TDR has been building reeds for 35 years....IMO I'd stay away from carbon fiber reeds , stick with the poly resin reeds I find them to be MUCH more durable in our racing gasoline as well as our alky Drag race engines turning a zillion RPMs...

Jay
Jay Smith is offline   Reply With Quote
Old 30-11-2012, 12:01 AM   #16
Registered User
 
Country: channel islands
Location: guernsey
Boat name: adrenalin
Boat make: ring 21c
Engines: merc 150 pro xs
Cruising area: channel islands

Join Date: Nov 2011
Location: guernsey
Posts: 34
thanks for the advice jay but i am not realy looking to get any more power out of the engine and i want to keep it as reliable as possable so i dont want to start playing with things like commpression just want to be able to rev it to 6500rpm without worrying about melting electrics or breaking reeds.
Phill_Dewe is offline   Reply With Quote
Old 30-11-2012, 12:30 AM   #17
Registered User
 
Country: guernsey
Occupation: mechanic
Boat name: top gun dewpacabra
Boat make: phantom 600 phantom 19
Engines: mercury 2.5 mercury 2.4 mercury 150 pro xs
Cruising area: channel islands

Join Date: Jul 2012
Posts: 32
Quote:
Originally Posted by Phill_Dewe View Post
thanks for the advice jay but i am not realy looking to get any more power out of the engine and i want to keep it as reliable as possable so i dont want to start playing with things like commpression just want to be able to rev it to 6500rpm without worrying about melting electrics or breaking reeds.
you need more power to go faster!!
patrick d is offline   Reply With Quote
Old 01-12-2012, 09:08 PM   #18
CB1
Registered User
 
CB1's Avatar
 
Location: poole dorset

Join Date: Mar 2004
Location: poole dorset
Posts: 868
You can spend ££££££'s on the mechanical side, but if the balance of the boat ain't right you'll be wasting your money. That, and a prop that works for you, and the boat and you both are at ease with. When she's flying it looks good but your losing speed. Your aim should be to get the best possible AVERAGE speed in a race, not just out and out top speed that you can only use for 10% of the time.
CB1 is offline   Reply With Quote
Old 01-12-2012, 10:16 PM   #19
Registered User
 
Country: channel islands
Location: guernsey
Boat name: adrenalin
Boat make: ring 21c
Engines: merc 150 pro xs
Cruising area: channel islands

Join Date: Nov 2011
Location: guernsey
Posts: 34
cb1 your right that the top speed is not as relivant as being able to maintain a good avrage got the boat set up well this year with a good prop. i have got the top speed to 72mph and i could do 60mph through pritty much anything (within reason) i dont think it is realistic to expect much more speed if any just dont want to go breaking stuff on the engine by over revving it and ruin a race weekend.
Phill_Dewe is offline   Reply With Quote
Old 04-12-2012, 01:39 AM   #20
Trade Member
 
Country: United States
Location: South Texas. USA
Occupation: Own JSRE ( Jay Smith Racing Engines )
Interests: ACCELERATION (anykind )

Join Date: Jan 2006
Location: South Texas. USA
Posts: 244
My favorite saying:

" A Marginal Motor and a Magical Prop can and will win World Titles "
" A Magical Motor and a Marginial Prop can't out run my dog with a full bladder "

Jay Smith
__________________

Jay Smith is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT +1. The time now is 11:03 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×