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18-04-2007, 10:14 AM
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#1
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On a roll
Country: England
Location: Plymouth
Occupation: Anything in metal
Interests: Bristol Rovers, Cider & Boats
Boat name: Aqua Thunder, Badboy
Boat make: Bernico F2, Phantom 21
Engines: Merc 280efi, Merc 260efi
Cruising area: Worldwide
Join Date: Mar 2004
Location: Plymouth
Posts: 2,249
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Fuel/oil ratio
Just had the 260efi fitted and am hearing very conflicting comments in terms of the fuel oil ratio. I cant remember the name of the fully synthtic stuff that I got but it states that you can run at 100:1, and the forum member that I got it from has run a 2.5 260efi at 75:1 with no problems at all, but...........I'm also being told that I shouldnt run at any more that 32:1, bit confused really as I trust both parties!!
Any thoughts??
On another note first time out in it last nite and the performance was awsome!
Cheers
Dan
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All hail to Jail Ale
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18-04-2007, 10:49 AM
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#2
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Registered User
Location: GOLDEN MILE
Boat name: LILY THE PINK AND TERMINATOR 11
Boat make: PHANTOM 21 AND 20
Engines: 2.5 EFI X 2
Join Date: Mar 2004
Location: GOLDEN MILE
Posts: 2,475
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Good quality fully synthetic at 32/1 unless you want it to go bang!
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PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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18-04-2007, 10:56 AM
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#3
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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There are speciality oils you can run at 75:1 or even higher, but they are special.
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18-04-2007, 12:24 PM
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#4
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On a roll
Country: England
Location: Plymouth
Occupation: Anything in metal
Interests: Bristol Rovers, Cider & Boats
Boat name: Aqua Thunder, Badboy
Boat make: Bernico F2, Phantom 21
Engines: Merc 280efi, Merc 260efi
Cruising area: Worldwide
Join Date: Mar 2004
Location: Plymouth
Posts: 2,249
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Quote:
Originally Posted by verytricky
There are speciality oils you can run at 75:1 or even higher, but they are special.
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Yeh, I cant remember the name of it but it states on it that you can use it up to 100:1
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All hail to Jail Ale
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18-04-2007, 01:16 PM
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#5
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Registered User
Country: uk
Location: kent
Occupation: director
Interests: ski racing
Boat name: hotshot
Boat make: cyclone 21
Engines: mercury 280
Cruising area: global
Join Date: Feb 2005
Location: kent
Posts: 419
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Outboard Oils
Dan, we use Valvoline fully synthetic in our 2.5efi @ 32-1 DO NOT GO WEAKER THAN THIS, IT WILL GRENADE.
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18-04-2007, 03:05 PM
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#6
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Registered User
Location: GOLDEN MILE
Boat name: LILY THE PINK AND TERMINATOR 11
Boat make: PHANTOM 21 AND 20
Engines: 2.5 EFI X 2
Join Date: Mar 2004
Location: GOLDEN MILE
Posts: 2,475
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Quote:
Originally Posted by Bazza
Dan, we use Valvoline fully synthetic in our 2.5efi @ 32-1 DO NOT GO WEAKER THAN THIS, IT WILL GRENADE.
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That is the same oil I use.
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PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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18-04-2007, 07:51 PM
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#7
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Registered User
Country: Belgium
Location: near Ghent
Occupation: engineer
Interests: boating, wakeboarding, snowboarding, fitness
Boat name: Outlaw
Boat make: Phantom 21ft
Engines: Yamaha 200hp
Cruising area: Zele / Kanaal Gent-Terneuzen
Join Date: Jun 2006
Location: near Ghent
Posts: 473
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the more rpm's, the more oil you'll need in your mix...
1:32 sounds perfect for the 2.5 efi. I wouldn't risk wasting an high performance engine running it on a 1:100 mix...
1:100 must be superlubricant
Don't know how you could benefit from this ?? More performance ? Bit cheaper ? I doubt it...
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18-04-2007, 08:40 PM
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#8
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Registered User
Country: england
Location: the grim north
Occupation: robot
Cruising area: tyne
Join Date: Nov 2004
Location: the grim north
Posts: 915
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on similar topic whats the best way to ensure a good oil/fuel mix when filling a belly tank thats 4 inckes high and 1 1/2 meters long
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Speed costs weight so what do we cut off first
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18-04-2007, 08:58 PM
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#9
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Registered User
Location: poole dorset
Join Date: Mar 2004
Location: poole dorset
Posts: 868
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Use a big funnel and pour in the oil whilst pouring the fuel. Dont put the oil in before the fuel as it dosn't mix too well.
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18-04-2007, 09:22 PM
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#10
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hello
Join Date: Mar 2004
Posts: 2,739
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I think thats only generally a problem with mercury performance blend. I allways put the oil in first then the fuel then drive to the slip. I'd have though all the starting stopping going round corners and round abouts would mix it up pretty good. That said though I don't use performance blend!!!
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18-04-2007, 09:43 PM
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#11
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Registered User
Country: United kingdom
Location: West Sussex
Occupation: Grease Monkey
Interests: Makin my boat faster!
Boat name: S.B Racing
Boat make: Ocke mannerfelt canopied B23 / Zapcat
Engines: Merc 200XS Gen 2 / Tohatsu 50
Cruising area: littlehampton/Southampton
Join Date: Jan 2005
Location: West Sussex
Posts: 2,656
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Mix it in cans if you wanna be double sure! Thats all i do! That way if you mix all the cans at once if you only need ten litres to top up, the fuels already mixed and all you need to do is pour in ten litres instead of working out what the ratio of oil is for that amount!
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Class 3C Mono EPA National speed record holder 95.35 mph Avg!
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18-04-2007, 10:16 PM
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#12
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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Quote:
Originally Posted by Dan
Yeh, I cant remember the name of it but it states on it that you can use it up to 100:1
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Not really much help unless you tell us the make now is it?
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18-04-2007, 10:53 PM
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#13
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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Oil
Its 100:1 AMSOIL I ran an XR2 from new for 2 seasons @75:1 & when checked it was like new I have it on good authority that in the states they are running 2.5's @ 100:1 !! Now being realistic we are talking merc Hi Perf & its as sure as death & taxes going to Shit itself however much oil you put in the only advantage is better performance,cleaner running, better fuel consumption (petrol is cheaper than oil) even a Seagul 40 plus would run on it.
Bob
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If Only
National Outboard Immersed Propeller Mono Record 103mph
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19-04-2007, 09:10 AM
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#14
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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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Castrol Biolube was claimed to run at 100:1 - never did trust it at that ratio for an XR2 though!
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Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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19-04-2007, 12:25 PM
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#15
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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Alsyn oils also claim a 100:1 ratio due to their better than the best lubrication etc.
Oil does not burn as good as petrol, so you get a better performance due to that. Oil actually stops the combustion of petrol in the engine, so removing oil has a doubling effect. ie going from 25:1 to 50:1 will not only give you the benefit of half the oil, the benefit is that the remaining petrol burns even better.
Having said that, I never reduced the oil in my engines - out of fear...
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19-04-2007, 08:37 PM
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#16
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Registered User
Country: uk
Location: pasty land
Occupation: Developer
Boat make: p 21
Engines: XR2
Join Date: Jul 2005
Location: pasty land
Posts: 48
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dan theres a post on s&f about amsoils you should read it before
you use it!!! it does not seem to impress jay smith
Rob.
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19-04-2007, 10:38 PM
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#17
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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oil
Better still check with Terry Rinker !!
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If Only
National Outboard Immersed Propeller Mono Record 103mph
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19-04-2007, 11:44 PM
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#18
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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Check it out
__________________
If Only
National Outboard Immersed Propeller Mono Record 103mph
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20-04-2007, 07:56 AM
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#19
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Registered User
Location: GOLDEN MILE
Boat name: LILY THE PINK AND TERMINATOR 11
Boat make: PHANTOM 21 AND 20
Engines: 2.5 EFI X 2
Join Date: Mar 2004
Location: GOLDEN MILE
Posts: 2,475
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__________________
PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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21-04-2007, 08:45 PM
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#20
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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
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I choose NOT to get into an oil debate with anyone and could and can care less what oil anybody chooses to run , all I can report and render an observation about is based on my opinion and my own findings, I am not an oil salesman nor do I make a dime selling oil I want to estabilish that from the start..
It was discussed on S&F and someone ( not me ) reported ( but took the post down ) the F1 racer in question's wrench changes bearings and rings after every race and has the motor recoated after 80 hours after running the "majic elixer" I don't know nor care what they or anybody else uses or does , but can the average boater afford or choose to do that being loyal to an OIL to make an engine live????? IMO these snake oils are not a quality oil , ever notice that for every 1 person that likes it ( and they are either trying to sell it or getting paid by the company to endorse it ) there are 20 with a horror story about it! I shouldn't throw up the warnings I tell people in the states that I drive new corvettes every year and alot of the payments are made by these snake oil users with smoked engines..A racing engine that is torn down EVERY race is a very bad example to endorce and prove the durability and quality of a particular oil sold for a consumer engine that runs all or several seasons and is not torn down on a VERY regular basis... ( EVERY WEEKEND )
Disclaimer: All the above is simply my OPINION I am no oil guru but I don't like what I see when rebuilding these motors thats used this product...
Good luck,
Jay @ JSRE
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