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09-02-2015, 09:11 AM
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#1
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Captain slow
Country: england
Location: surrey
Boat name: terminal velocity no.120
Boat make: phantom20
Engines: 2.5efi smillin jack
Cruising area: solent
Join Date: Mar 2006
Location: surrey
Posts: 477
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Merc 260
After how many hours should a 260 have new rings fitted?
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09-02-2015, 01:35 PM
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#2
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,347
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50!
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09-02-2015, 03:48 PM
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#3
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Captain slow
Country: england
Location: surrey
Boat name: terminal velocity no.120
Boat make: phantom20
Engines: 2.5efi smillin jack
Cruising area: solent
Join Date: Mar 2006
Location: surrey
Posts: 477
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Cheers Burty.
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09-02-2015, 05:14 PM
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#4
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Registered User
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: 2,327
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******* hell!!!
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Im re branding pepper spray as Arsehole Repellant.im going to make a fortune.
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09-02-2015, 07:01 PM
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#5
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The Doc
Join Date: Mar 2004
Posts: 8,283
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Quote:
Originally Posted by andymac
After how many hours should a 260 have new rings fitted?
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60 hours ago!
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09-02-2015, 09:35 PM
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#6
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Registered User
Join Date: Sep 2007
Posts: 406
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Quote:
Originally Posted by andymac
After how many hours should a 260 have new rings fitted?
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I'd have thought Ross would be the one to answer that.
He's very knowledgable for his age you know.
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09-02-2015, 10:47 PM
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#7
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The Doc
Join Date: Mar 2004
Posts: 8,283
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Quote:
Originally Posted by Marinautic
I'd have thought Ross would be the one to answer that.
He's very knowledgable for his age you know.
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He might even be able to wangle you warranty replacements on the old rings, he knows his consumer rights
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10-02-2015, 02:58 PM
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#8
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,347
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you could always not bother and then wait for the bang that way it might do 65 hours and you can come back and say Burty was wrong they do 65 hours between rebuilds
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10-02-2015, 04:08 PM
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#9
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Captain slow
Country: england
Location: surrey
Boat name: terminal velocity no.120
Boat make: phantom20
Engines: 2.5efi smillin jack
Cruising area: solent
Join Date: Mar 2006
Location: surrey
Posts: 477
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I could do Burty. I think it's almost time for a rebuild. Trouble is I'm guessing how many hours I've done. So a bit of a lottery really. The sooner the better I think.
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10-02-2015, 07:54 PM
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#10
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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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Always heard "50h", but I also heard that hours @ +6k rpm count double ?
Besides a log of 'hours since last rebuilt', can one take a look through the spark plug holes and evaluate of 'it's time' ?
Which brings us to the next question : how do you evaluate exactly ?
Is an inspection throught the spark plug holes sufficient ? Or do you have to take off the heads ? Other alternatives ?
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10-02-2015, 08:39 PM
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#11
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Mike Mills
Country: Uk
Location: Walney island
Occupation: Telecom Engineer
Interests: Powerboats, Fishing, Shooting, Modified cars
Boat name: VANISHING POINT
Boat make: Phantom 21 racedeck
Engines: MERC 2.4 EFI 320hp, MERC 2.4 EFI Bridgeport x2, 2.4 ported EFI
Cruising area: Walney coast (North west)
Join Date: Sep 2014
Location: Walney island
Posts: 657
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Leak down test above a certain percent is what the yanks do I believe?
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Bring your boats up North
Piel island poker run 2017
all welcome
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11-02-2015, 07:20 AM
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#12
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Registered User
Country: uk
Location: lee on solent
Interests: skydiving powerboats
Engines: tower power lover
Cruising area: solent
Join Date: Apr 2014
Location: lee on solent
Posts: 91
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so easy to wire in !
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11-02-2015, 05:03 PM
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#13
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,347
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Quote:
Originally Posted by Red dragon
Leak down test above a certain percent is what the yanks do I believe?
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yup, got one for sale if needed, £ 200 plus postage, you'll need a compressor though. used to use it on my 280's after every outing. only takes half hour which is a well spent half hour if it saves a hole in it.
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11-02-2015, 05:05 PM
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#14
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Mike Mills
Country: Uk
Location: Walney island
Occupation: Telecom Engineer
Interests: Powerboats, Fishing, Shooting, Modified cars
Boat name: VANISHING POINT
Boat make: Phantom 21 racedeck
Engines: MERC 2.4 EFI 320hp, MERC 2.4 EFI Bridgeport x2, 2.4 ported EFI
Cruising area: Walney coast (North west)
Join Date: Sep 2014
Location: Walney island
Posts: 657
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Quote:
Originally Posted by Burty
yup, got one for sale if needed, £ 200 plus postage, you'll need a compressor though. used to use it on my 280's after every outing. only takes half hour which is a well spent half hour if it saves a hole in it.
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Good bit of kit of your running race motors!!
10% ain't it burty?
__________________
Bring your boats up North
Piel island poker run 2017
all welcome
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13-02-2015, 10:39 AM
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#15
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,347
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I worked on 8% as thats what JSRE instructions say
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15-02-2015, 02:47 PM
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#16
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
Posts: 1,692
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I've got a leakdown tester in the workshop if you want to borrow it...just make sure it finds it way home when your done
It's in the rear workshop, on the second set of racking on the right as you go in, 2nd shelf up, in a red plastic box in the top of a grey plastic container
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15-02-2015, 03:07 PM
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#17
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Captain slow
Country: england
Location: surrey
Boat name: terminal velocity no.120
Boat make: phantom20
Engines: 2.5efi smillin jack
Cruising area: solent
Join Date: Mar 2006
Location: surrey
Posts: 477
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26-02-2015, 12:21 PM
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#18
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Captain slow
Country: england
Location: surrey
Boat name: terminal velocity no.120
Boat make: phantom20
Engines: 2.5efi smillin jack
Cruising area: solent
Join Date: Mar 2006
Location: surrey
Posts: 477
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Just done leak down test on it, and I'm happy to say that all 6 are between 4 & 5%. Whoop whoop!
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26-02-2015, 12:28 PM
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#19
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Mike Mills
Country: Uk
Location: Walney island
Occupation: Telecom Engineer
Interests: Powerboats, Fishing, Shooting, Modified cars
Boat name: VANISHING POINT
Boat make: Phantom 21 racedeck
Engines: MERC 2.4 EFI 320hp, MERC 2.4 EFI Bridgeport x2, 2.4 ported EFI
Cruising area: Walney coast (North west)
Join Date: Sep 2014
Location: Walney island
Posts: 657
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I need to do both of mine :/
__________________
Bring your boats up North
Piel island poker run 2017
all welcome
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26-02-2015, 12:38 PM
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#20
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Captain slow
Country: england
Location: surrey
Boat name: terminal velocity no.120
Boat make: phantom20
Engines: 2.5efi smillin jack
Cruising area: solent
Join Date: Mar 2006
Location: surrey
Posts: 477
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Glad I've done it mate. Gives me some peace of mind for a while.
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