MONTAUK 17: Re-power with Yamaha 90-HP Two-cycle

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Author Topic:   MONTAUK 17: Re-power with Yamaha 90-HP Two-cycle

Appleton68 posted 02-19-2008 10:21 PM ET (US)
I have a Boston Whaler 1981 Montauk 17, and, based on all the research and comments here, I am considering re-powering it with the Yamaha two-cycle 90-HP. Any comments would be appreciated. TY
jimh posted 02-19-2008 10:59 PM ET (US)
For a classic two-cycle, the Yamaha 90 is a good choice. They seem to be selling at a decent price, at least "decent" in comparison to more modern motors that cost $3,000 more.
sosmerc posted 02-20-2008 12:06 AM ET (US)
The classic 90hp Merc 2 stroke is also still available for around $6175 plus shipping and rigging. They are a strong performer.
Tohsgib posted 02-20-2008 09:28 AM ET (US)
I have seen the 90 Yammie under $5k for the engine. Parts are expensive like controls, tach, etc compared to others. The friggin key switch is $270 from the dealer. Top speed will be about 41-42. Cruise will be about 27-28 at 3800. Cruise will burn about 4-5gph. They are light(265lbs) quiet and reliable.
Tohsgib posted 02-20-2008 09:29 AM ET (US)
PS...if you think you are going to buy it and install yourself, etc...no WARRANTY will be given.
carl lazar posted 02-27-2008 10:42 AM ET (US)
My 1982 Montauk has a new 75HP four stroke Yamaha on it. It burns 2 to 3 gallons per hour and cruise at 30MPH at 3500RPM. Alot more quiet then the two stroke.
95Outrage17 posted 02-27-2008 07:48 PM ET (US)
Hi TY,
I have a customer's '83 Montauk at the shop and it has a '99 Yam 90hp 2-stroke on the transom. I've driven the boat many times (my uncle was the previous owner) and I consider that motor to be nearly perfect for that hull. It's a great motor that works well and is easy to service. In a couple of years they'll be NLA due to emission regulations. I'm all for lower emissions, but I'll be missing these motors. Certainly louder then the Merc 90hp 4-stroke on my Outrage and not as smooth at idle, but lots of punch, much lighter and they sound great. I say go for it if you like the idea and can get one for a good price. I doubt you'll be dissapointed :)
Dave Sutton posted 02-28-2008 06:41 PM ET (US)
I'd agree. This is a well balanced and high quality combo with a Montauk. I am VERY happy with mine. Simple, robust, and reliable. I'd buy another in a heartbeat.
Dave
.
brisboats posted 02-28-2008 07:12 PM ET (US)
Looks like the motor may be around awhile longer. See Jim's article about emission credits. Certainly is a great motor and a nice fit on the Montauk.
Brian
contender posted 02-28-2008 07:46 PM ET (US)
Tohsgip. I have never heard that before, If I purchase and install my own engine on the boat it voids the warranty?
Tohsgib posted 02-28-2008 08:45 PM ET (US)
Read the form Contender...new rule from Yamagucci about a year ago!
Newtauk1 posted 03-01-2008 09:11 AM ET (US)
Running a Mercury 75hp classic 2 stroke(2001) on a 1988 Montauk.Max speed about 41mph in the ocean. Motor weighs 305lbs.
Are you from Appleton Wisc? I work for a company based there.
Appleton68 posted 03-01-2008 08:24 PM ET (US)
Purchased the 90 Yamaha 2 stroke & it is being installed as we speak.

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Author	Topic: MONTAUK 17: Re-power with Yamaha 90-HP Two-cycle
Appleton68	posted 02-19-2008 10:21 PM ET (US) I have a Boston Whaler 1981 Montauk 17, and, based on all the research and comments here, I am considering re-powering it with the Yamaha two-cycle 90-HP. Any comments would be appreciated. TY
jimh	posted 02-19-2008 10:59 PM ET (US) For a classic two-cycle, the Yamaha 90 is a good choice. They seem to be selling at a decent price, at least "decent" in comparison to more modern motors that cost $3,000 more.
sosmerc	posted 02-20-2008 12:06 AM ET (US) The classic 90hp Merc 2 stroke is also still available for around $6175 plus shipping and rigging. They are a strong performer.
Tohsgib	posted 02-20-2008 09:28 AM ET (US) I have seen the 90 Yammie under $5k for the engine. Parts are expensive like controls, tach, etc compared to others. The friggin key switch is $270 from the dealer. Top speed will be about 41-42. Cruise will be about 27-28 at 3800. Cruise will burn about 4-5gph. They are light(265lbs) quiet and reliable.
Tohsgib	posted 02-20-2008 09:29 AM ET (US) PS...if you think you are going to buy it and install yourself, etc...no WARRANTY will be given.
carl lazar	posted 02-27-2008 10:42 AM ET (US) My 1982 Montauk has a new 75HP four stroke Yamaha on it. It burns 2 to 3 gallons per hour and cruise at 30MPH at 3500RPM. Alot more quiet then the two stroke.
95Outrage17	posted 02-27-2008 07:48 PM ET (US) Hi TY, I have a customer's '83 Montauk at the shop and it has a '99 Yam 90hp 2-stroke on the transom. I've driven the boat many times (my uncle was the previous owner) and I consider that motor to be nearly perfect for that hull. It's a great motor that works well and is easy to service. In a couple of years they'll be NLA due to emission regulations. I'm all for lower emissions, but I'll be missing these motors. Certainly louder then the Merc 90hp 4-stroke on my Outrage and not as smooth at idle, but lots of punch, much lighter and they sound great. I say go for it if you like the idea and can get one for a good price. I doubt you'll be dissapointed :)
Dave Sutton	posted 02-28-2008 06:41 PM ET (US) I'd agree. This is a well balanced and high quality combo with a Montauk. I am VERY happy with mine. Simple, robust, and reliable. I'd buy another in a heartbeat. Dave .
brisboats	posted 02-28-2008 07:12 PM ET (US) Looks like the motor may be around awhile longer. See Jim's article about emission credits. Certainly is a great motor and a nice fit on the Montauk. Brian
contender	posted 02-28-2008 07:46 PM ET (US) Tohsgip. I have never heard that before, If I purchase and install my own engine on the boat it voids the warranty?
Tohsgib	posted 02-28-2008 08:45 PM ET (US) Read the form Contender...new rule from Yamagucci about a year ago!
Newtauk1	posted 03-01-2008 09:11 AM ET (US) Running a Mercury 75hp classic 2 stroke(2001) on a 1988 Montauk.Max speed about 41mph in the ocean. Motor weighs 305lbs. Are you from Appleton Wisc? I work for a company based there.
Appleton68	posted 03-01-2008 08:24 PM ET (US) Purchased the 90 Yamaha 2 stroke & it is being installed as we speak.