I/O to OB conversion project?
12-05-2018, 11:43 AM
#11
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Join Date: Aug 2012
Location: Collierville, TN and Pickwick Lake
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It is all about CG, CB, and transom strengthening. When I converted my 35' Cigarette Awesome to a 28' outboard center console. the new transom was the center of my work. It was supported by the stringers and knees, by the motor well design, and by major tabbing to the bottom, sides, and deck. The layout of the console, fuel tank, T-top, etc. was driven by the new balance point. A lot of work, but I would do it again.
Racer
12-05-2018, 12:14 PM
#13
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Should be a stringer boat. Didn't they run low 80's with trip 500 EFI's?
12-05-2018, 01:18 PM
#14
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the bullet was a full conversion and restore. Everything from wiring, upholstery, steering etc. the bracket was close to $3k, new deck extension to 9 feet and upholstery to cover side panels almost 5k, engines steering props running gear another almost $50k, new seats and cabin upholstery boat cover electronics another 10k. Trailer was another 8k. Total was over 80k when done. Just made it a four sleeper this month. Stringers were built up and a quarter inch plate was full length of bracket bolted and wit gussets bolted to stringers. I did a lot of the work myself so I can't put a value to it. With four people on board and full gas and gear 65 was attained. You must reinforce the transom. I used additional biaxle glass in an outside before the bracket. My suggestion is it will cost you a heck of a lot more to convert then to get one that runs, but, I have a much bigger cockpit and a boat that is what I wanted to be. The only thing I miss is the inboard noise but not the maintenance and gas cost.
12-05-2018, 01:25 PM
#15
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The question I always have is if all you do is reinforce the transom, install a bracket and OBs, it sure seems that it would upset the boats CG. May be faster because of less weight and bow lift but what happens in the rough, does it start to be Ass heavy?
12-05-2018, 01:47 PM
#16
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the bullet was a full conversion and restore. Everything from wiring, upholstery, steering etc. the bracket was close to $3k, new deck extension to 9 feet and upholstery to cover side panels almost 5k, engines steering props running gear another almost $50k, new seats and cabin upholstery boat cover electronics another 10k. Trailer was another 8k. Total was over 80k when done. Just made it a four sleeper this month. Stringers were built up and a quarter inch plate was full length of bracket bolted and wit gussets bolted to stringers. I did a lot of the work myself so I can't put a value to it. With four people on board and full gas and gear 65 was attained. You must reinforce the transom. I used additional biaxle glass in an outside before the bracket. My suggestion is it will cost you a heck of a lot more to convert then to get one that runs, but, I have a much bigger cockpit and a boat that is what I wanted to be. The only thing I miss is the inboard noise but not the maintenance and gas cost.
12-05-2018, 02:21 PM
#17
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Look at tht theres a thread for a 47 Apache conversion with a pilot house, a 40 Excalibur to a CC, and a big tempest to an OB pilothouse.
Also, there is a 45’ CC Hull only for sale on miami Craigslist based on a tempest that is ready for outboards and rigging.
Also, there is a 45’ CC Hull only for sale on miami Craigslist based on a tempest that is ready for outboards and rigging.
12-05-2018, 02:23 PM
#18
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I just did a 42 Lightning with triple 300's. Love it so far 74 mph working on water pressure issues. will have that figured out this week. should see about 78 when done. PM me if you need to pick my brain. Installing 400's soon want to get close to 100 mph
Last edited by Joetool; 12-05-2018 at 02:25 PM.
12-05-2018, 04:00 PM
#19
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did not change the cg that I noticed. You take a few hundred pounds out by taking out the I/o rig and sun deck etc. the 30" setback seems to balance it out. No problems running in any sea and comes right up on a plain. I can run the boat in 18" to 20" of water without any problems. I converted many 28's and put a 40 gallon tank between the stringers at the transome.
