MONTAUK 17 with 90

Optimizing the performance of Boston Whaler boats
Acseatsri
Posts: 190
Joined: Tue Oct 20, 2015 8:46 am

MONTAUK 17 with 90

Postby Acseatsri » Tue Apr 23, 2019 12:06 pm

What propeller is best for a 1985 Yamaha 90 on a 1982 MONTAUK 17?

What is the approximate top speed with a 1985 Yamaha 90?

ASIDE ON A COMPLETELY DIFFERENT TOPIC:
Should a 1982 Montauk 17 have a clamshell over the anchor locker drain tube? It doesn't appear that this boat has ever had one in place.

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Phil T
Posts: 2602
Joined: Thu Oct 22, 2015 6:08 pm
Location: Was Maine. Temporarily Kentucky

Re: MONTAUK 17 with 90

Postby Phil T » Tue Apr 23, 2019 12:26 pm

For your engine and model I show the following member recommendations:

Three- bladed props:
13" x 17" Yamaha Painted Stainless Steel
13-1/4" x 16" Yamaha Performance Series
13-1/4" x 15" Turbo 1 4.25

Running solo and light gear/fuel, WOT is 5500 with a speed of 41-43 depending on bottom, canvas and engine condition.

Four-bladed props:
13-1/4" x 17 Amita 4
14 x 15 Turbo Pontoon
1992 Outrage 17
2019 E-TEC 90
2018 LoadRite 18280096VT
Member since 2003

MikeF1
Posts: 14
Joined: Wed Feb 03, 2016 12:26 pm

Re: Performance with different engines and unknown propellers

Postby MikeF1 » Tue Apr 23, 2019 1:03 pm

[Gave some speed information for a different engine using unknown propellers.]

jimh
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Location: Michigan, Lower Peninsula
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Re: Finding Evidence of a drain; installing a drain

Postby jimh » Tue Apr 23, 2019 3:54 pm

For a boat that originally had a clamshell cover over the drain of the anchor locker, it would be a reasonable expectation that there would be some evidence of that drain being installed in the form of leftover holes from fasteners that held the drain in place, and the only exception to that might be if the drain were removed, the holes repaired, and those repairs were done at an expert level.

On the other hand, if there is no evidence of a drain having been installed at time of manufacture, and if a drain is now desired, installation of drain will not be particularly difficult to accomplish. If you decide to install a drain and need more advice, start a thread in REPAIRS and MODIFICATIONS.

This thread will continue to discuss propeller selection for the boat under discussion. Readers who feel that the drain topic has not been sufficiently covered, please start a separate thread in REPAIRS and MODIFICATIONS to discuss the drain. If a survey of all MONTAUK owners with regard to the presence of lack of a drain in desired, please use THE GAM.

jimh
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Location: Michigan, Lower Peninsula
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Re: MONTAUK 17 with 90

Postby jimh » Tue Apr 23, 2019 3:55 pm

Acseatsri wrote:What is the approximate top speed [of a MONTAUK 17] with a 1985 Yamaha 90?


There is a comprehensive listing of estimated boat speeds of a MONTAUK 17 with various engines in the REFERENCE article. See

http://continuouswave.com/whaler/refere ... power.html

jimh
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Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
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Re: MONTAUK 17 with 90

Postby jimh » Tue Apr 23, 2019 3:59 pm

Acseatsri wrote:What propeller is best for a 1985 Yamaha 90 on a 1982 MONTAUK 17?


Phil T wrote:For your engine and model I show the following member recommendations:

Three- bladed props:
13" x 17" Yamaha Painted Stainless Steel
13-1/4" x 16" Yamaha Performance Series
13-1/4" x 15" Turbo 1 4.25

Running solo and light gear/fuel, WOT is 5500 with a speed of 41-43 depending on bottom, canvas and engine condition.

Four-bladed props:
13-1/4" x 17 Amita 4
14 x 15 Turbo Pontoon


Phil's advice sounds good to me. Phil seems to have collected and organized a lot of information about specific Boston Whaler models, specific outboard engines, and specific propeller choices.