Contrary to others on this thread, I would prefer the 6v92s to the 8v71s. For 71 series, I like the 471, 671, and the 12v71. As for 92's, I like the 6v92. Just my experience, having owned most all configurations in trucks, boats, or construction equipment.
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Thread: 46 Convertible refit begins
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Re: 46 Convertible refit begins
Sky Cheney
1985 53EDMY, Hull #CN759, "Rebecca"
ELYC on White Lake--Montague, MI
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09-09-2019 07:32 PM #62
Re: 46 Convertible refit begins
The 6v92 DDEC at 625 hp has issues. I hear rings and the electronics are touchy. Also at that HP they are more or less the same HP as the 8v92 in the 46HP. I dont know from experience how the standard 46 will handle the extra HP and remember the 6v92 is lighter than the 8v92 used in the HP version.
Scott
41C117 "Hattatude"
Port Canaveral Florida.
Marine Electronics and Electrical Products Distributor.
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09-10-2019 06:39 AM #63
Re: 46 Convertible refit begins
I agree that newer 4 stroke engines would be a lot better option. We felt that the opportunity to purchase the 92 that come with all the accessories may not come up again and they are defiantly the best Budget option. The advantage of these engines is that they are still in a boat and probably won’t be ready to for us until March April next year so we will get an opportunity to sea trial them before they come out. We have paid a deposit and have committed to purchasing the engines so they are locked in. You are right when you say we have a lot of prep to do and realistically we don’t need the engines for 12 to 18 months. Last week Mick and I discussed what you mentioned and agreed that if some 4 stroke engines came along and our budget hasn’t blown out too much then we would be mad to not buy them and then re sell the 92s. Lots can change in a few years so let’s see what happens. Thanks for taking the time to discuss this. M
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09-10-2019 06:46 AM #64
Re: 46 Convertible refit begins
Hi Scott. Do you know what the differences between the standard model and the Hp. Maybe we should look at upgrading to reflect more the hp spec. If possible? I am familiar with the different keel but I’m of the understanding that the keel walking problem only kicks in around the 30 knot mark? M
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09-10-2019 06:52 AM #65
Re: 46 Convertible refit begins
I feel that if we get them built correctly we should have many years of good boating. Keeping in mind that the last boat I owned a 40 ft Riviera which we will be getting the same maybe a bit more use we only did about 100 hrs per year. Mainly used as a harbour boat which is basically half an hour to a destination for the day and back again. M
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Re: 46 Convertible refit begins
The 6v92ta up to 550hp has some decent longevity, even better at 465-485hp which is comparable in output to the 435hp 8v71ti. The 92's are less tolerant of a lack of maintenance, however, since you definitely cannot overheat them and you need to make sure your coolant additives are maintained.
Some of the up sides of the 6v92 over the 8v71 is: 1) Cheaper to overhaul with wet liners and 2 less cylinders. 2) No raw water cooled intercoolers 3) shorter dimension engine so more room in front of them.
All said, not enough reasons to make the change when you could just rebuild the 71's and they'd outlast you but you've already explained your reasons for going this direction. I would opt for modern power if I was going to all of work of an engine swap but I understand the budget constraints.Sky Cheney
1985 53EDMY, Hull #CN759, "Rebecca"
ELYC on White Lake--Montague, MI
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04-10-2020 09:43 PM #67Registered Member
- Join Date
- May 2016
- Posts
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Re: 46 Convertible refit begins
How is the refit coming on this project?
Jason
Orange Beach, AL
1984 46C