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Jesse posted 04-24-2001 03:41 PM ET (US)
Why is the max.hp for a montauk 100hp?? Is it the weight of say a 115hp?? I might be repowering my 85 montauk..2 stroke vs. 4 stroke--90-100-or 115hp..These are questions I continually ask myself--I need help
Mike posted 04-24-2001 03:58 PM ET (US)
On a related note, I just observed that Boston Whaler has removed any mention of horse power ratings from the various boat specifications on their web site. On the Montauk, for instance, they list a 90 hp mercury under Standard Equipment - Mechanical, and a 90 hp 4-stroke Mercury under Options, but do not include a maximum-minimum specification of any kind.
dreid posted 04-24-2001 04:02 PM ET (US)
Simple answer: cause the Coast Guard says so right on the metal plate affixed to the hull of your boat. Weight/performance are not the questions... how much uninsured liability do you want is the question. Power above 100 h.p. on your Montauk will void any insurance you may care to carry on the hull. Pretty sure it's ditto for any liability insurance you might want to pay for as well. But hey, there's plenty of cowboys out there in over-powered machines, some of them in Whalers. It's just a matter of prudence and personal choice.
Soho posted 04-24-2001 05:18 PM ET (US)
Jesse,
Your question is a popular one this forum and if you expand the threads out and look around you will find a wealth of opinions and experiences detailed. As I just re-powered my 69 Nauset I can offer you the salient points I considered:
- 90 hp 2 stroke is a very very popular choice for a manageble hp/weight combo with good performance
- many people put a smaller 4 stroke on it seems ( 70 hp )to leverage the benefits of 4 strokes and avoid the weight issue of a larger engine - performance seems to be okay for most applications for these folks
- in my instance, going from a 90 hp 2 stroke Yamaha to a 100 hp 4 stroke meant 100 extra pounds on the stern - after reading other's comments I decided that in my case the extra weight and cost was not worth it. In addition, as my whaler is 69 vintage I was not excited about straining the transom more than necessary - hell, the 90 will give me 35+ knots which is fine for my needs.
- As regards engine weights - go to the web sites to gain data on specific engines.
- I had a Yamaha 90 on the boat before and just liked the way it ran and handled...
These are my thoughts for what they are worth. Explore the threads as there is a lot of information to read to help with your decision.
Ciao,
Ron
dgp posted 04-24-2001 05:46 PM ET (US)
Jesse, go to the Performance section and expand the threads to the "last year" and you'll find everything you wanted to know.

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Author	Topic: motors for Montauk
Jesse	posted 04-24-2001 03:41 PM ET (US) Why is the max.hp for a montauk 100hp?? Is it the weight of say a 115hp?? I might be repowering my 85 montauk..2 stroke vs. 4 stroke--90-100-or 115hp..These are questions I continually ask myself--I need help
Mike	posted 04-24-2001 03:58 PM ET (US) On a related note, I just observed that Boston Whaler has removed any mention of horse power ratings from the various boat specifications on their web site. On the Montauk, for instance, they list a 90 hp mercury under Standard Equipment - Mechanical, and a 90 hp 4-stroke Mercury under Options, but do not include a maximum-minimum specification of any kind.
dreid	posted 04-24-2001 04:02 PM ET (US) Simple answer: cause the Coast Guard says so right on the metal plate affixed to the hull of your boat. Weight/performance are not the questions... how much uninsured liability do you want is the question. Power above 100 h.p. on your Montauk will void any insurance you may care to carry on the hull. Pretty sure it's ditto for any liability insurance you might want to pay for as well. But hey, there's plenty of cowboys out there in over-powered machines, some of them in Whalers. It's just a matter of prudence and personal choice.
Soho	posted 04-24-2001 05:18 PM ET (US) Jesse, Your question is a popular one this forum and if you expand the threads out and look around you will find a wealth of opinions and experiences detailed. As I just re-powered my 69 Nauset I can offer you the salient points I considered: - 90 hp 2 stroke is a very very popular choice for a manageble hp/weight combo with good performance - many people put a smaller 4 stroke on it seems ( 70 hp )to leverage the benefits of 4 strokes and avoid the weight issue of a larger engine - performance seems to be okay for most applications for these folks - in my instance, going from a 90 hp 2 stroke Yamaha to a 100 hp 4 stroke meant 100 extra pounds on the stern - after reading other's comments I decided that in my case the extra weight and cost was not worth it. In addition, as my whaler is 69 vintage I was not excited about straining the transom more than necessary - hell, the 90 will give me 35+ knots which is fine for my needs. - As regards engine weights - go to the web sites to gain data on specific engines. - I had a Yamaha 90 on the boat before and just liked the way it ran and handled... These are my thoughts for what they are worth. Explore the threads as there is a lot of information to read to help with your decision. Ciao, Ron
dgp	posted 04-24-2001 05:46 PM ET (US) Jesse, go to the Performance section and expand the threads to the "last year" and you'll find everything you wanted to know.