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Author Topic:   Yamaha 60 hp 4 stroke

hookup66 posted 03-07-2005 05:56 PM ET (US)
Looking for some feedback on the 2003 yamaha 4 strokes. I've got a line on a 60hp for my Montauk. Any feedback or personal experience with this motor would be appreciated. I'm primarily concerned with reliability, etc. Thank you.
dgp posted 03-07-2005 07:19 PM ET (US)
According to the Mercury Marine Prop Selector web site, this motor, which is really a Mercury motor rebadged for Yamaha, will obtain 39 MPH with a Mercury 4 blade Trophy prop on a cassic Montauk hull.
I have the same outboard in the 50 Hp version for 3 years and have had no problems whatsoever.
LHG posted 03-07-2005 07:43 PM ET (US)
Also recommend you check out Whaler's published performance graphs on the 170 Montauk @ whaler.com. Figures for the 60 are compared to figures for the various 90's.
The downside to the Yamaha version of the engine is that it is carbureted, not EFI like the original Mercury version is.
elaelap posted 03-07-2005 08:20 PM ET (US)
I had the 2002 Yamaha 50 hp 4/s 'High Thrust' on my 1971 Katama 16, which I believe is about 10-15% lighter than a classic Montauk. That carbureted motor was geared down, had a stock aluminum 3-bladed prop, and my boat topped out at about 30 mph, which was plenty enough for me fishing on the relatively challenging ocean north of San Francisco. I liked the rig very much--great economy, boat jumped up onto plane at about 12 mph and cruised all day at 18-24 mph. I got the same "mileage" at cruising speeds as my Dodge Dakota got in town; the motor started consistently at the first turn of the key; it operated silently and smokelessly; and during the 300+ hours I put on it the motor never needed any repairs. CW member Steve/17 Bodega now owns the boat and reports being very satisfied with the motor as well...I think he's put another 300+ hours on it in one season.
I don't know whether I'd choose that combination if I were into waterskiing or wakeboarding, but for cruising and fishing I highly recommend it, especially in these days of rapidly rising fuel costs.
Tony
jimh posted 03-08-2005 07:19 PM ET (US)
I have never really seen any definitive information that indicated that Yamaha buys this engine from Mercury. There was a great deal of testimony about these engines before the USITC, and their history and development was discussed in detail. There is no mention about any sale of these engines by Mercury to Yamaha. In fact, Yamaha states clearly that the only four-stroke engine in the Mercury line which is actually made entirely in North America was the 25-HP Mercury four-stroke engine. (Prior to the Verado introduction.)
I will be glad to stand corrected on this, but apparently during the several thousand pages of testimony before the USITC the folks from Mercury never seemed to get around to correcting this. Nor did they ever mention any relationship between them and Yamaha in which they said they sold engines to Yamaha for "re-badging".
The testimony which was presented described these 40-60 HP four-stroke engines as being co-developed by Yamaha and Mercury, with Yamaha engineering the cylinder heads and Mercury the engine block. The engines are described as being built from components made in various places.
It seems that an urban legend has arisen about these engines in which somehow these facts are twisted into some new incantation where Mercury is the manufacturer and sells this finished engine to Yamaha.
I have to wonder how this would make sense, in as much as the engine would have to be shipped from Wisconsin to Japan and then back to the US. Mercury may continue to cast the block for this engine and sell that to Yamaha, but I don't think it is at all accurate to describe these engines as "Mercury" engines. They were co-developed in a five year period.
I don't think that Yamaha buys the whole engine from Mercury and "re-badges" it. I think they might buy some blocks. The closest thing to a direct statement about these engines in the USITC hearings was a vague statement from Mercury that these engines were assembled with parts made by various manufacturers.
So, again, if anyone really knows about these 40-60 HP four-stroke engines which appear to be made by both Mercury and Yamaha, please append your information.
For me, I find the testimony of executives of Mercury to be more compelling than anecdotes told by Mercury dealers and mechanics.
I think it such common knowledge that Mercury has purchased four-stroke engines from Yamaha and Tohatsu for years, and still plans to continue, that somehow pride has come into this equation and dealers want to take too much credit for the Mercury components which may or may not be in the Yamaha version of this engine.

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Author	Topic: Yamaha 60 hp 4 stroke
hookup66	posted 03-07-2005 05:56 PM ET (US) Looking for some feedback on the 2003 yamaha 4 strokes. I've got a line on a 60hp for my Montauk. Any feedback or personal experience with this motor would be appreciated. I'm primarily concerned with reliability, etc. Thank you.
dgp	posted 03-07-2005 07:19 PM ET (US) According to the Mercury Marine Prop Selector web site, this motor, which is really a Mercury motor rebadged for Yamaha, will obtain 39 MPH with a Mercury 4 blade Trophy prop on a cassic Montauk hull. I have the same outboard in the 50 Hp version for 3 years and have had no problems whatsoever.
LHG	posted 03-07-2005 07:43 PM ET (US) Also recommend you check out Whaler's published performance graphs on the 170 Montauk @ whaler.com. Figures for the 60 are compared to figures for the various 90's. The downside to the Yamaha version of the engine is that it is carbureted, not EFI like the original Mercury version is.
elaelap	posted 03-07-2005 08:20 PM ET (US) I had the 2002 Yamaha 50 hp 4/s 'High Thrust' on my 1971 Katama 16, which I believe is about 10-15% lighter than a classic Montauk. That carbureted motor was geared down, had a stock aluminum 3-bladed prop, and my boat topped out at about 30 mph, which was plenty enough for me fishing on the relatively challenging ocean north of San Francisco. I liked the rig very much--great economy, boat jumped up onto plane at about 12 mph and cruised all day at 18-24 mph. I got the same "mileage" at cruising speeds as my Dodge Dakota got in town; the motor started consistently at the first turn of the key; it operated silently and smokelessly; and during the 300+ hours I put on it the motor never needed any repairs. CW member Steve/17 Bodega now owns the boat and reports being very satisfied with the motor as well...I think he's put another 300+ hours on it in one season. I don't know whether I'd choose that combination if I were into waterskiing or wakeboarding, but for cruising and fishing I highly recommend it, especially in these days of rapidly rising fuel costs. Tony
jimh	posted 03-08-2005 07:19 PM ET (US) I have never really seen any definitive information that indicated that Yamaha buys this engine from Mercury. There was a great deal of testimony about these engines before the USITC, and their history and development was discussed in detail. There is no mention about any sale of these engines by Mercury to Yamaha. In fact, Yamaha states clearly that the only four-stroke engine in the Mercury line which is actually made entirely in North America was the 25-HP Mercury four-stroke engine. (Prior to the Verado introduction.) I will be glad to stand corrected on this, but apparently during the several thousand pages of testimony before the USITC the folks from Mercury never seemed to get around to correcting this. Nor did they ever mention any relationship between them and Yamaha in which they said they sold engines to Yamaha for "re-badging". The testimony which was presented described these 40-60 HP four-stroke engines as being co-developed by Yamaha and Mercury, with Yamaha engineering the cylinder heads and Mercury the engine block. The engines are described as being built from components made in various places. It seems that an urban legend has arisen about these engines in which somehow these facts are twisted into some new incantation where Mercury is the manufacturer and sells this finished engine to Yamaha. I have to wonder how this would make sense, in as much as the engine would have to be shipped from Wisconsin to Japan and then back to the US. Mercury may continue to cast the block for this engine and sell that to Yamaha, but I don't think it is at all accurate to describe these engines as "Mercury" engines. They were co-developed in a five year period. I don't think that Yamaha buys the whole engine from Mercury and "re-badges" it. I think they might buy some blocks. The closest thing to a direct statement about these engines in the USITC hearings was a vague statement from Mercury that these engines were assembled with parts made by various manufacturers. So, again, if anyone really knows about these 40-60 HP four-stroke engines which appear to be made by both Mercury and Yamaha, please append your information. For me, I find the testimony of executives of Mercury to be more compelling than anecdotes told by Mercury dealers and mechanics. I think it such common knowledge that Mercury has purchased four-stroke engines from Yamaha and Tohatsu for years, and still plans to continue, that somehow pride has come into this equation and dealers want to take too much credit for the Mercury components which may or may not be in the Yamaha version of this engine.