Outboard Powered 330 SS
#21
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Ahhh, okay, I see now. I don't think that will be an easy project because of the existing integrated swim platform, but anything can be done I guess, although I think most people would say sell the 330ss and buy the grady with outboards already on it. The balance and ride may be affected too.
For a comparison, I had a friend convert a 24 grady style with a 205 horse 4.3 sterndrive to a 200 horse yahmaha. The outboard was 2mph slower, so pretty close. This was an easier conversion though, as it had a square transom and they bolted an outboard brackett to it and he gained interior space.
For a comparison, I had a friend convert a 24 grady style with a 205 horse 4.3 sterndrive to a 200 horse yahmaha. The outboard was 2mph slower, so pretty close. This was an easier conversion though, as it had a square transom and they bolted an outboard brackett to it and he gained interior space.
Again , I am no boat engineer , but from what I understand Formula hulls are highly regarded and in comparison with a Grady should have a better performance , even with outboards.
The reason i am going this route is that the Formula 330SS exactly fits my specs , I have had whalers and recently malibu's including the 24 LSV , its just not worth it on the ocean and now shifting to a nice party boat with some overnight amenities.
Really have looked at other boats , including the outboard power concept sport , there just isn't anything unless i go opposite of sporty and go Jeanneau Cap Camarat , not quite ready for that.
I guess i will be the first one converting a 330 SS , either way I will set a precedent...
Thank for your input.
Last edited by MikeHK99; 04-17-2015 at 10:14 AM.
#22
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Thanks knot 4 me , I know the 330 SS does just fine with sterndrives , but thats the point.
I can't keep them alive as described in my original post , due to having to be in salt water , humid conditions all year around.
I am just crazy about the 330 SS and I think its the maximum sized SS that can be converted and kept alive in salt water all year around.
#23
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Just my 2 cents worth........
Great idea, fully understand your position about outboards Vs. sterndrives for where you live. I think you will need more than 250 X 2 to get the big boat moving. 350's or the new 400's would be ideal but the cost may well blow out off the map. I think 300's would come close to achieving the desired result. There's plenty of decent Centre Consoles close to 10,000 lbs that will do 60 with twin 300's so I don't think 50 is out of the question given the extra weight and beam.
I presume you'll have to antifoul? Better keep your bottom spotless!!
Not a big fan of a bracket on something that size. I can imagine cutting the platform in the centre and mounting engines on the (re-designed) transom in a conventional manner. You'd end up with small integrated swim platforms on either side of your outboards.
Good luck whichever way you go, a bit project and I'd love to see pics...!!
RR
P.S. Check the sea Ray 370 Venture. http://www.boattest.com/boats/boat_video.aspx?ID=2752
A whopping 16,700 lbs as tested and 43.7 mph. True it's the latest design and all that but still a big heavy boat. MMmmm
Great idea, fully understand your position about outboards Vs. sterndrives for where you live. I think you will need more than 250 X 2 to get the big boat moving. 350's or the new 400's would be ideal but the cost may well blow out off the map. I think 300's would come close to achieving the desired result. There's plenty of decent Centre Consoles close to 10,000 lbs that will do 60 with twin 300's so I don't think 50 is out of the question given the extra weight and beam.
I presume you'll have to antifoul? Better keep your bottom spotless!!
Not a big fan of a bracket on something that size. I can imagine cutting the platform in the centre and mounting engines on the (re-designed) transom in a conventional manner. You'd end up with small integrated swim platforms on either side of your outboards.
Good luck whichever way you go, a bit project and I'd love to see pics...!!
RR
P.S. Check the sea Ray 370 Venture. http://www.boattest.com/boats/boat_video.aspx?ID=2752
A whopping 16,700 lbs as tested and 43.7 mph. True it's the latest design and all that but still a big heavy boat. MMmmm
Last edited by rak rua; 04-17-2015 at 10:36 PM.
#24
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Suzuki 300s are the best deal going.
250s would be risky imo. My boat is Jefferson marlago 35 and goes 53mph light load with 250s. But it's only 7600ish dry with the engines.
Since you're having a science experiment, ering on the side of extra power would be wise. 300hp zukes cost the same as 250s anyways.
I actually wouldn't even attempt the whole project but I'd really like to see how it turns out.
250s would be risky imo. My boat is Jefferson marlago 35 and goes 53mph light load with 250s. But it's only 7600ish dry with the engines.
Since you're having a science experiment, ering on the side of extra power would be wise. 300hp zukes cost the same as 250s anyways.
I actually wouldn't even attempt the whole project but I'd really like to see how it turns out.
#25
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J
P.S. Check the sea Ray 370 Venture. http://www.boattest.com/boats/boat_video.aspx?ID=2752
A whopping 16,700 lbs as tested and 43.7 mph. True it's the latest design and all that but still a big heavy boat. MMmmm
P.S. Check the sea Ray 370 Venture. http://www.boattest.com/boats/boat_video.aspx?ID=2752
A whopping 16,700 lbs as tested and 43.7 mph. True it's the latest design and all that but still a big heavy boat. MMmmm
Don't think your going to be happy with the results either
#26
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I'm not well informed but according to their website, the Venture is still a current boat in 2015. Would be a shame if production has ceased. Sea Ray haven't built many 'mistakes'. http://global.searay.com/page.aspx/p...0-Venture.aspx
RR
#27
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I'd venture to say that you will run into issues on acceleration and planing due to the reduction in torque and the much smaller blade area compared to the B3s. And the CG on the hull is going to be significant altered. Might want to give Formula a call, they might have some input.
#28
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My Nor-Tech 34 CC reportedly weighs in dry at 9K lbs. With twin 300s it runs low 60s with plenty of fuel, factory ran it 65.9 on test run, but we know it had little fuel or extra weight. With a full tanks, 270 gallons of gas, the key to getting it on plane is to have patients, it certainly is not a quick process. I know I'm comparing a boat engineered for outboards to a boat engineered for stern drives, but both boats are similar in size, weight and beam (10 ft).
Last edited by Mentalpause; 04-21-2015 at 12:09 PM.
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