200 yamaha OX66 or 200 Mercury Carb - The Hull Truth

rcouret · 12-25-2003, 06:17 AM

Going on the back of 21' bay boat..25"transum
Need to choose between the 200 yamaha OX66 or 200 Mercury Carb. Has to be one or the other. No other choice. Not concerned about the cost difference but will be $1300 more for Yamaha..
Bob

PeteH · 12-25-2003, 06:25 AM

No question- get the yami.

jtburf · 12-25-2003, 06:29 AM

Yami has extended warranty offers now !!!!! check your local dealer and inquire ...... John

Triton 2200CC, Honda BF200,

drb · 12-25-2003, 11:57 AM

run a search on the 0x66 200 on this site. What you'll find are very few probs mentioned and some consider it the most reliable engine yamaha ever made. I love mine!

Ed · 12-25-2003, 12:15 PM

Go with the Merc. It is well known to be bullet proof. Had mine 5 years now with no problems.

No first hand experience with the Yam, it may be good as well. But for $1,300 more, why go with Yam?

Mist-Rest · 12-25-2003, 12:41 PM

I have the Mercury 200 SW carb with only one complaint. It does not like to run in long no wake zones or troll. Loads up the plugs with oil and won't restart without cleaning them. I have yet to look for the "no foul" plug I heard about from a friend. I double checked the oil pump setting and it's fine. It's broken in now with I think 35 or so hours on it and will be out of warranty this May. I'm planning on running the oil down and swapping over to a full synthetic at that time. That and the plug change should take care of the issue. It likes the gas dock plenty but for what it cost up front, I knew that when I paid for it. The best thing about it is that anyone can work on it. No need for computer hookups to find out what's wrong. Air, oil, fuel, spark, and it should run

. I hope for many long years of service provided I don't come down with the dreaded 4 feet more please disease

FWIW I might have bought a Yamaha if the deals were side by side as yours is. I do know for a fact that Yami parts are just plain expensive.

PeteH · 12-25-2003, 01:11 PM

90 degree V-6 yami- as bulletproof as it gets. 0X66 -perfect starts and excellent economy. Lower unit life expectancy- limitless. No question- get the yami....

Megabyte · 12-25-2003, 01:38 PM

Peter, Are you sure? My OX66 (a 1997, 225 hp model) is a 76 degree V6. I thought that the 200 was 76 degree as well.

- Kevin
~~~~ ><((((*>

Seacat FL · 12-25-2003, 01:41 PM

Go for the Merc. I have a 200 Saltwater Classic Series and it has been perfect.

Pharma-Sea · 12-25-2003, 03:59 PM

Both are quality engines. Odds are, the Merc. will go out (most probably with the electronics on the motor) before the Yamaha. The Merc. is probably a little faster, but can not stand up to the reliability of the Yamaha. Furthermore, if you plan to trade or sell your engine (on or off of the boat) in the future, you are more likely to have quicker success with the Yamaha. There is a reason why the Yamaha is more expensive than the Merc. FWIW, if you buy the Merc., you will always try to compare it to the Yamaha to all that you talk to. If you buy the Yamaha, you will never talk about the Merc.

Pharma-Sea · 12-25-2003, 04:05 PM

Mega,

Pete is right, 90 degrees on the V. 115hp through 200hp.

John_Madison CT · 12-25-2003, 05:29 PM

The Yamaha Ox66 is probably the most reliable EFI engine out there. It will be worth the money and in the long run, hassle.

Good Luck,

John

rcouret · 12-25-2003, 06:34 PM

Thanks for all the replies...
It's obvious to me that the nod goes easily to the Yamaha even with the price difference.
So to both merc and yamaha fan's....Thanks again
Bob

mronzo · 12-26-2003, 09:46 PM

rcouret
I just bought a Gw with t-200 OX66, this thread confirms my earlier inquiries about them!