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04-07-2005, 10:24 PM
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#1
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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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oil/fuel mix?
Im running an xr2 and im running her at 33:1! Is this a bit to much oil or shall i stay the same? I think it used to be run at 36:1 but i thought that was a bit to lean or am i wrong? Wot are the rest of you guys running? 
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Class 3C Mono EPA National speed record holder 95.35 mph Avg!
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04-07-2005, 10:29 PM
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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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i ran my xr2 at 40/1
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PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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04-07-2005, 10:50 PM
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#3
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Registered User
Join Date: Mar 2004
Posts: 6,891
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Jay Smith on Scream & Fly swears by 40:1 and he knows his shit - currently building a secret weapon for a board member here I think. 
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04-07-2005, 10:53 PM
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#4
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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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Cheers guys i'll try it at that then!
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Class 3C Mono EPA National speed record holder 95.35 mph Avg!
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04-07-2005, 11:00 PM
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#5
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Registered User
Location: Scotland
Interests: Hole maker
Boat make: Humber Ocean Offshore
Engines: KAD 300/DPX
Join Date: Mar 2004
Location: Scotland
Posts: 958
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Quote:
Originally posted by roofer
i ran my xr2 at 40/1
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Yeh, but didn't you melt yours?
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JW.
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04-07-2005, 11:08 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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that was my 2.5 efi which i run at 30/1
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PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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05-07-2005, 12:13 AM
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#7
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Registered User
Location: Scotland
Interests: Hole maker
Boat make: Humber Ocean Offshore
Engines: KAD 300/DPX
Join Date: Mar 2004
Location: Scotland
Posts: 958
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Okey doke.
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JW.
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05-07-2005, 08:49 AM
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#8
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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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Run mine on biolube at 50/1!
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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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05-07-2005, 04:56 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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have used royal purple at 70:1 no probs
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05-07-2005, 05:16 PM
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#10
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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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S**t thats lean aint it! 70:1? Where do ya buy royal purple oil? I run mercury racing oil but the oil your using must be the b*ll**ks!
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Class 3C Mono EPA National speed record holder 95.35 mph Avg!
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05-07-2005, 09:31 PM
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#11
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Registered User
Join Date: Mar 2004
Posts: 6,891
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70:1! What are this weeks lottery numbers chris?
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05-07-2005, 10:29 PM
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#12
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Registered User
Join Date: Apr 2005
Posts: 410
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Quote:
Originally posted by Matt
70:1! What are this weeks lottery numbers chris?
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06-07-2005, 08:41 AM
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#13
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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 CB1
have used royal purple at 70:1 no probs
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.............. it's ok if you're only revving it to 2,500 RPM isn't it Chris?  
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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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06-07-2005, 09:03 AM
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#14
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Registered User
Location: hayling island
Boat name: snow monkey
Boat make: extreme 24
Engines: mercruiser 6.2
Join Date: May 2004
Location: hayling island
Posts: 2,082
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30-1
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07-07-2005, 12:37 AM
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#15
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Registered User
Country: UK
Location: Thorpe Bay
Occupation: IT Director, www.lighthouseit.co.uk
Interests: Boats, Surfing & Snowboarding
Boat name: Isabella / Cool Runnings II / Bella / Sea Pup / Sea Dog / Speedy II / Bernico F3
Boat make: Colvic 35 Suncruiser / Bernico F3 / Phantom 16 / Zodiac 420 YL / RIB / Apollo 9
Engines: 2 x Perkins Sabre 225ti / Mercury Pro XS /Mercury Pro XS 115/ Tohatsu 2.5 / Mercury 25 / Mercury 50
Cruising area: Thames Estuary / River Crouch / Salcombe
Join Date: Jun 2004
Location: Thorpe Bay
Posts: 932
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Quote:
Originally posted by carly baby
30-1
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I run 30-32:1 as well, the XR2 service manual that was posted on this forum here http://www.boatmadforum.co.uk/showth...ght=xr2+manual
on page 3 states 32:1
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Loving the Spitfire with a 25HP Mercury
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07-07-2005, 05:49 PM
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#16
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Registered User
Country: England
Location: Cornwall
Occupation: Civil Engineer in the water industry
Interests: Powerboat racing, travel, curries, zimmers
Boat name: "N" Class fabrication
Boat make: B23
Engines: 200XS
Cruising area: Torbay & Falmouth
Join Date: Jul 2005
Location: Cornwall
Posts: 478
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I run 33:1 Mercury high performance synthetic, never had a problem. Mix it in a 20ltr jerrycan using a measuring jug for the oil, shake it up good and proper, then pour it in the tank through a filtered funnel. 
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07-07-2005, 06:13 PM
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#17
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The Doc
Join Date: Mar 2004
Posts: 8,291
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substitute Gin for Petrol, tonic for oil & Chaos for tank.............. sounds like a good weekend
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07-07-2005, 09:45 PM
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#18
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Registered User
Country: england
Location: southampton
Occupation: Self employed monkey
Interests: racing, gettin wet.
Boat name: sea j marine
Boat make: 12ft scorpio,14 fletcher,16 argo
Engines: 25hp merc and 90 yam
Cruising area: southampton water
Join Date: Nov 2004
Location: southampton
Posts: 888
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we used to run the argo at 100 to 1! and that was with biolube and they told us if it messed it up they would pay for any damage!
john
__________________
the day before you die your life flashes before you... make it worth watching.
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07-07-2005, 11:27 PM
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#19
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member
Join Date: Apr 2004
Posts: 1,039
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Quote:
Originally posted by K9 racing
we used to run the argo at 100 to 1! and that was with biolube and they told us if it messed it up they would pay for any damage!
john
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yeh we were on 100:1 but now 50:1, you can feel the difference though not sure if the claimed 'better compression' etc is true tho??
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10-07-2005, 11:55 AM
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#20
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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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anything below 8000 rpm 40:1
above 8000 rpm 32:1
merc synthetic
this info is from a very reliable source 
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