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Nova marine ?
- Thread starter derek owen
- Start date
Help Support Intlwaters:
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- Dec 25, 2004
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Graphite lite oil.
Start after heating to 150-160 degrees
Tried to post a video but no luck.
Is there a double secret way to post videos????
Start after heating to 150-160 degrees
Tried to post a video but no luck.
Is there a double secret way to post videos????
Rich Junker
Well-Known Member
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- Oct 6, 2022
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- 117
I was gonna mention that the OS outboard has a Nikasil coated sleeve. The 2 stroke Mercury Racing outboards used Nikasil from 1998 and up until the 4 strokes took over. The coating is so hard that Mercury recommended replacing the piston rings every 100 to 150 hours. And the gold titanium nitrate rings are expensive. Today they retail for over $700 a set.
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- Jan 7, 2009
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Grim i do not think the OS outboard has a Nikasil plating. Nikasil is a patented plating from the german factory Mahle, which was developed in comparison with Daimler Benz. This plating is made for surface of aluminium cylinders. The OS sleeve is made of brass, it is covered with a nickel surface. No silicium here and that is why the OS outboard sleeves do not last so long ( my thinking).
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- Oct 29, 2009
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Yes I am pretty sure there is only dirt bikes that have the Nikasil plating, that is what it was made for I would guess. I recall reading there was some interest in small bore motors and doing Nikasil but in the end the volume of motors was not worth the cost to build the tools to make that happen. Well maybe there is new interest in this...
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Must just be nickel plating then?
Grim
Grim
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Yes, it is.
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Works good.. I have never wore one out..
Grim
Grim
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- Jan 7, 2009
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- 125
Here in Ulm (Germay) we had 12 OS outboards Gen1 (with watercooling). We had lots of problems with the liners, the Nickel plating near the top dead center of the piston came off! They were replaced by Graupner (german distributor) till the outboard Gen2 arrived.
Joachim
Joachim
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- Dec 27, 2001
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I have never had one go bad.. I have ran them so much I have split the case between the bearings.. but never had a liner go bad.
GALLONS OF FUEL.. LOL..
I have bought used motors that have had bad liners.. and replaced them but not sure how that happen.. I have never had one go bad?
Grim
GALLONS OF FUEL.. LOL..
I have bought used motors that have had bad liners.. and replaced them but not sure how that happen.. I have never had one go bad?
Grim
Rich Junker
Well-Known Member
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- Oct 6, 2022
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- 117
We haven't had very good luck with them lasting very long either. I know Grim seems to make them last. Maybe something to do with the oil in the fuel. I use Technology fuel.
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