www.iFourWinns.com

I thought some of you would like to see this video of a Mercruiser seacore Drive, With someone talking about the way Mercruisers new seacore is fighting Corrosion, I found it on another site Enjoy.


http://www.mercurymarine.com/newsandeve ... around.php

So when they showed the old VP drive, why didn't they show an old Merc drive? Not exactly a head-to-head comparison.

Will be interesting to see how it does over time and proven out by everyday boaters. Having the seperated engine cooling is nice though.

You can bet VP will come out with something similar.

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2003 Four Winns Horizon 220 5.0 GXi/SX

BT, are you selling your Lavey Craft ??

http://www.oldride.com/boats/282516.html



They have.
http://www.volvo.com.cn/volvopenta/na/e ... oceanx.htm


http://www.boattest.com/Resources/view_ ... ewsID=3470

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One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

So if you get get a 5.0 or 5.7L with the VP Oceanx does that mean the engine cooling is a closed loop system with a heat exchanger?

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2003 Four Winns Horizon 220 5.0 GXi/SX

Interesting....Volvo put out the Ocean Series a few years back and they had some problems with the bellows tearing...now we see the Ocean-X...I'd wait before buying any of these new technologies because getting the bugs out seems to take a while and if the manufacturer drops the drive system (didn't Volvo discontinue the OSI?) it will really hurt resale value. As far as keeping a sterndrive in salt water and related issues you still have the problem of barnacles growing on the bellows and trim lines so no matter what they do about corrosion there is still too much stuff in the water and the anti fouling paints do not work that well. If Merc and Volvo were REALLY SMART they'd partner up with either Interlux or Pettit and come up with an antifouling paint that really works on aluminum...and can be used on rubber...once that problem is solved...many more boaters would find sterndrives acceptable for salt water use....they are going about it in a way that shows they do not understand the objection of most salt water boaters...it's the problem with marine growth not only the fact that the drives can corrode under certain conditions...if you could get the anti fouling paint to work and then the factory finish underneath stayed intact corrosion would not be as much an issue...

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II

Hi Cap'n Morgan, No that's not mine Mine is a 21ft xt ski open bow, But just about the same colors as that one.

Also just so everyone knows That video I found is at least 3 to 4 years old now, I just found it while looking around in bayliners site and thought I would post it for all to see. I know it's around that old because I remember seeing it when I went to a mercruiser service school 3-4 years ago. And volvo has done some new stuff to be able to keep up with fighting Corrosion also since that time, So you guys are right it not really fair now. I just ment to post it up so that everybody has a chance to see the basic stuff the marine manufacturers try to do while using other materials to fight Corrosion, Is all. So I hope this video does not start any wars with anybody. Thanks.

Make the whole drive out of Stainless Steel or NiBrAl, problem solved... But can we afford it?

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Brett DiMichele

Or use outboards up to 26 or so feet then go with a traditional inboard...less space efficient yes than a sterndrive but so much simpler...
Actually if you are not in a hot marina...and no shore power...even in salt water the corrosion issue is not that bad as to be a reason not to have a sterndrive...it's the growth problem and the issues that the growth causes (barnacles cut bellows and trim lines) as I referred to earlier....corrosion resistant and even corrosion proof drives will not solve this problem for boats kept in salt water...which is the whole marketing reason for these corrosion resistant drives in the first place...give us a paint that works...and on rubber parts too...and we don't really need super corrosion resistant materials....my plain old 22 year old Cobra has some corrosion but nothing that will affect the operation of it....

but if you have not choice but to keep it in a marina...and they have stray current issues...forget any sterndrive...and go with an outboard...

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II

Stainless is in production, but no duo prop. Price is scary for sure.
http://www.caudwellmarine.com/pages/799684675/home.asp

Nibral might be too heavy. But who knows.

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One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

Cap'n,

Yep I was going to link to it, but could not remember the name of the MFG.

At the end of the day there really is no cure-all one fits answer to the problem, even if say you had Outboards, that doesn't stop all the other pieces of submerged metal (think, thru hulls) from corroding, if stray currents are involved. It's just part of the wonderful "boating experience" I guess.

One has to wonder how much stress is on the transom on the Caldwell setup. The engines are basically "hanging" in the air off the transom, there are no other attachment points that I can see, to say, the stringers. Seems to me like that's a lot of stress on the transom if you hit a wake and when you come back down.

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Brett DiMichele