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05 December 2007, 18:14
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#1
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Member
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
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Mariner 40hp Oil Injection
I've got this outboard for my searider. It all runs fine, and the oil injection seems to be working fine.
Its a 1996 model, so I'm guessing its one of the last of the yamaha based 40's (as used by the rnli) but with oil-injection fitted, to compete with the more modern outboards at the time?
It seems quite a rare model, I can't find much info, want to find the specs etc.
Anyone got any experience/opinion on the injection system? seen plenty of the pre-mix models, not seen this one before.
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05 December 2007, 18:47
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#2
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Member
Country: France
Town: Côte d'Azur
Boat name: Beaver Patrol
Make: Avon Searider SR4
Length: 4m +
Join Date: Jan 2004
Posts: 5,934
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http://www.evolutionribs.co.uk/gallery/gallery/9.jpg
That was my 96 mariner 40 oil injection. If its the same as mine it a Mercury one not a Yam. If it is the same pm me your email address and I'l send you the manual.
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05 December 2007, 19:17
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#3
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Member
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
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Quote:
Originally Posted by Tim M
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Thanks for the reply, its definatly the Yam based model. The previous owner bought it new from the dealer in 1996, but it may have been manufactured in 1995.
It looks the same as the normal premix ones from the side, but is wider, tried to show this in the photo:
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05 December 2007, 23:08
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#4
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RIBnet admin team
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,069
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I think you'll probably find that it's identical to the all the Mariner/Yamaha 40hp twin cylinders made from the late '70s to the '90s but with an autolube system and identical to most of the ex RNLI motors out there apart from the autolube. Parts and data won't be a problem from a dealer.
Cracking motors and it'll make your sr4 fly.
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05 December 2007, 23:18
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#5
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Member
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
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Quote:
Originally Posted by Nos4r2
I think you'll probably find that it's identical to the all the Mariner/Yamaha 40hp twin cylinders made from the late '70s to the '90s but with an autolube system and identical to most of the ex RNLI motors out there apart from the autolube. Parts and data won't be a problem from a dealer.
Cracking motors and it'll make your sr4 fly.
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Had a look at the parts list and diagrams at a dealer, but we couldn't find the specs for this particular motor. I'm guessing everythings going to be the same, but with a few extra kg's in weight for the autolube??
Can't wait to get it on the boat, been at uni for the last 3 months, finally got a few weeks to think about the rib again!
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05 December 2007, 23:37
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#6
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RIBnet admin team
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,069
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Quote:
Originally Posted by samt
Had a look at the parts list and diagrams at a dealer, but we couldn't find the specs for this particular motor. I'm guessing everythings going to be the same, but with a few extra kg's in weight for the autolube??
Can't wait to get it on the boat, been at uni for the last 3 months, finally got a few weeks to think about the rib again!
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Should be about right. Those twin cyl yammies are fantastic lumps. Does it have an hour meter under the cowl by any chance?
TurboDiesel would be the guy to ask for a definitive answer for anything to do with them though as it'll probably have been sold by Barrus in one way shape or form when new.
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06 December 2007, 13:36
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#7
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Member
Country: UK - England
Town: Looe
Make: Delta
Length: 4m +
Engine: Mercury
Join Date: Apr 2004
Posts: 1,409
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Hello,
Yes its a Yamaha based engine. Very good engine. The Autolube will have been fitted after the RNLI had finished with it. The engines come back to Barrus and get de-modified, PIRS taken off, etc etc. Then either get made into a long shaft, or short. Some go out as electric start and some with Autolube. The spec depended on what the dealer that would sell them on wanted. If you have a questions about specs etc, let me know.
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10 December 2007, 00:01
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#8
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Member
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
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Quote:
Originally Posted by Nos4r2
Should be about right. Those twin cyl yammies are fantastic lumps. Does it have an hour meter under the cowl by any chance?
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Theres no hour metre. It definatly seems very good mechanically, theres a couple of minor parts that have corroded, such as the steering tube, so hopefully replacing these.
The props 10 1/2" pitch, (cant be sure till later in the week), any idea what sort of size would be suitable for the SR4? 10.5 just sounds abit low to me??
Quote:
Originally Posted by Turbodiesel
Hello,
Yes its a Yamaha based engine. Very good engine. The Autolube will have been fitted after the RNLI had finished with it. The engines come back to Barrus and get de-modified, PIRS taken off, etc etc. Then either get made into a long shaft, or short. Some go out as electric start and some with Autolube. The spec depended on what the dealer that would sell them on wanted. If you have a questions about specs etc, let me know.
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I've found the diagrams for it here: http://www.mercruiserparts.com/selec...doc_nbr=814840
Still can't find any specification for it (40 ELO), most interested in finding the weight .
Thanks
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10 December 2007, 00:19
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#9
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RIBnet admin team
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,069
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Are you sure that's not 10.5" diameter rather than pitch? Pitch should be stamped on it too.
As for prop pitches, do you know the gear ratio of the lower unit?
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10 December 2007, 00:23
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#10
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Member
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
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Quote:
Originally Posted by Nos4r2
Are you sure that's not 10.5" diameter rather than pitch? Pitch should be stamped on it too.
As for prop pitches, do you know the gear ratio of the lower unit?
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I'm pretty sure thats the pitch, It was probably used on a heavier boat. Just wondered what size props were usually used on the sr4's? Gear ratio is 2.00:1
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11 December 2007, 13:09
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#11
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Member
Country: UK - England
Town: Looe
Make: Delta
Length: 4m +
Engine: Mercury
Join Date: Apr 2004
Posts: 1,409
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Your engine will be a 2:1 gearbox. And the weights are below....
Long shaft manual start: 69.5kg
Long shaft electric start:74.5kg
Short shaft manual start: 67kg
Long shaft electric start: 72kg
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11 December 2007, 13:12
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#12
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Member
Country: UK - England
Town: Looe
Make: Delta
Length: 4m +
Engine: Mercury
Join Date: Apr 2004
Posts: 1,409
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Quote:
Originally Posted by Nos4r2
Are you sure that's not 10.5" diameter rather than pitch? Pitch should be stamped on it too.
As for prop pitches, do you know the gear ratio of the lower unit?
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Yes you can have a 10.5" pitch prop on that engine, diameter is either 12" or 11, 5/8th's.
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11 December 2007, 18:49
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#13
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Member
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
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Thanks turbodiesel for helping out again
The prop is definatly 12" in diameter, and 10.5" in pitch, not really suitable for the searider.
Looks like I need to order 14 or 15inch prop, oh and find a console, and I'm sorted
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12 December 2007, 15:05
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#14
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Member
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,671
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My old SR4 ran a 13" pitch on a Suz 25. if that's any help.
Good choice of boat by the way
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12 December 2007, 15:45
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#15
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Member
Country: UK - England
Town: Brum
Boat name: UTV
Make: Bombard Aerotec
Length: 3m +
Engine: 2 stroke 25hp
MMSI: 235933026
Join Date: May 2003
Posts: 744
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I ran a 15 pitch prop on a 4m flatacraft with the same engine, it flew. Rev's, I would guess 6000 give or take a 100
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13 December 2007, 11:21
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#16
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Member
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
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Thanks 9D280 and Tinker.
My heart says 15, my head says 14
Can't do much without testing, so we'll see what I order tommorow!
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13 December 2007, 12:26
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#17
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Member
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,671
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Remember with the water ballast a 15" will take a little longer to get moving, but with a 40 probably not such an issue as I had!
If you're ordering a new one, why not get the dealer to bring along one of each flavour to test - you are spending good money with them after all.
Let us know what happens......
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