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Old 11-03-2006, 05:29 PM
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Default Mercury 200 offshore motors, opinions??

I am looking at a boat powered by 1998 200hp Mercury offshore motors which are the carbureted versions, any feedback on the reliability of these motors?
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Old 11-03-2006, 05:48 PM
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Default Re: Mercury 200 offshore motors, opinions??

as long as the previous owners has maintenance records u r OK
get the boat surveyed also
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Old 11-03-2006, 06:10 PM
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Default Re: Mercury 200 offshore motors, opinions??

They were fairly reliable just thirsty...
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Old 11-03-2006, 06:11 PM
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Default RE: Mercury 200 offshore motors, opinions??

they are 98 motors would not expect to much from them.how many hours?where they takin care of?i had one they are good motors love the fuel though.
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Old 11-03-2006, 06:25 PM
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Default Re: Mercury 200 offshore motors, opinions??

they have about 300 hours, what would you expect 2 of them to burn pushing a 25' boat at a high 20's cruise?
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Old 11-04-2006, 09:23 AM
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Default Re: Mercury 200 offshore motors, opinions??

I own a 03. It likes fuel but anybody can work on them. It's pretty simple under the cowl unlike alot of newer fuel sipping engines. Can't help you for the burn rate other than I get about 2MPG on my 21 Mako. One of these days I'll install my Flo Scan.
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Old 11-04-2006, 11:43 AM
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Default Re: Mercury 200 offshore motors, opinions??

i have a single 2000 saltwater 200 great basic engine no problems, drinks fuel like any v6 200hp engine would, it moves my 23 wa as fast as i want. the fuel cost i feel are offset by no shop visits that many hpdi engines need. navman makes a fuel system at a lower cost .
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Old 11-05-2006, 01:08 AM
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Default Re: Mercury 200 offshore motors, opinions??

I have a 2002 200 carbed saltwater on a 23' Concept. The previous owner ran the motor with the engine temp alarm screaming and cooked a piston. $1800 to rebuild the entire powerhead and 120 hours later I have no real complaints. The only issue is a poor idle inherent to Merc carbed motors. She pushes my boat to 55ish mph and I have run it on the pin for extended periods a few times. Maintence is easy as it comes. I dropped down one main jet size and it runs a little crisper but no faster. Plugs are a little cleaner. These motors come jetted relatively safe (ie. fat). I get 3.5 mpg cruising at 40mph/4000rpm in nice water. The boat is light though.
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Old 11-10-2006, 01:50 PM
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Default Re: Mercury 200 offshore motors, opinions??

I have twin 1993 200's (very similar I think) on my Mako 25 and I get 1.8 NmPG in flat water at 30kts and 4000 RPM. It doesn't seem to matter much if I am doing 22 or 32 kts I get the same NmPG. If I push it above 4200 RPM then the fuel really starts to go away quickly! At WOT I get 1 NmPG but I am doing almost 50kts.
So far I have had a few minor problems but they are reliable and I can get home on one engine doing 25kts. When I look at the price of new engines it would take me a REALLY long time to make up the fuel savings compared with what I paid to rebuild the power head on these when I first bought the boat. I haven't been to the mechanic once since in 2 years (I have done some work myself however...stator, power packs, and trim motor)
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Old 11-10-2006, 02:30 PM
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Default Re: Mercury 200 offshore motors, opinions??

i had a pair of 93 200 on a scarab sport rigged to fish the bahamas for 7 years. paid 9000 for the boat sold it 7 years later for 18000. motors ran hard and fast. had one motor in ruff water would pick up less than the other but no overheating( more a hull issue). all in all one strong motor easy to work on. got some bad gas in the bahamas once and picked up garbage in a carb. rebulit the carb 15 miles offshore and ran great after that. boat ran high 50's loaded with chopper props. if the comp is good go for it but u won't get the high mpg.
good luck
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Old 11-10-2006, 03:31 PM
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Default Re: Mercury 200 offshore motors, opinions??

Had the exact motors and year. They were a sometimes a little hard to start after sitting a while, but they always did start. I used Pennzoil synthetic blend two-stroke oil which seemed to cut down on smoke. They have no belts or computers or injectors to worry about. Maintenance couldn't be easier or cheaper, plugs ($2 each at NAPA) and thermostats super easy to get at, change the outdrive oil, pump grease in a couple of spots, and that's it. Maybe $60 and an hour to do both. I had someone else do the impellers once every two years for about $100 each.
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Old 11-10-2006, 06:18 PM
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Default Re: Mercury 200 offshore motors, opinions??

We run a 2002 carb'd 200 Merc in our charter fleet alongside some Yamaha's and Hondas. Compared to the equivalent 2 stroke carb'd Yamahas the Merc has a rougher idle, is more smokey, has cost vastly more to maintain, is trickier to start, and is maybe 5% - 10% thirstier in fuel usage. On the other side, it feels more powerful than the equivalent Yamahas. I have several times had the service agents down to work on the rough idle and smokey idle 'issue', and after a lot of testing and poking around, the response has been "everything checks out OK, that is just how these engines are". Summay - we won't be buying any more Mercs for a while.
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Old 11-10-2006, 07:11 PM
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Default Re: Mercury 200 offshore motors, opinions??

I agree with the rough idle. Just the nature of the beast. I had mine rebuilt after the previous owner over heated it and stuck a piston. I bought the boat that way (short version of a long story). The guy who rebult mine worked at Lake X for Merc Racing and told me that it was a strong motor for a 200 comparitively speaking. I know my boat runs right at the same speed as the same equiped with an Opti225.
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