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  Montauk 170+Pate 27=How Far?

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Author Topic:   Montauk 170+Pate 27=How Far?
Traveller posted 03-08-2003 07:33 PM ET (US)   Profile for Traveller   Send Email to Traveller  
Has anybody calculated how many gallons/hour they are burning with the 4-stroke 90 on their Montauk 170? I'm curious to know how far you could realistically go in a day and get home safely on one tank (the Pate 27) of gas. Assume that conditions are good enough to allow you to keep the boat on plane - not WOT, just a comfortable cruising speed. Applying my question to a real situation - could the 170 W/ 4-stroke 90 get from Jacksonville, FL to St. Augustine, FL down the ICW and back (about 65 miles round trip)on a single tank of gas? Thanks.
captbone posted 03-08-2003 08:27 PM ET (US)     Profile for captbone  Send Email to captbone     
I would have to guess but I would say at minimum that you get 4 mpg. Also figure your range on 90% of the tank for safety. So 95 miles would be a good estimate in my opinion of the 170 range with a 27 gallon tank.
James posted 03-09-2003 02:01 AM ET (US)     Profile for James  Send Email to James     
I have the 90/4-stroke on my 170 Montauk and I also have the Pate 27 gallon fuel tank. I have not done an accurate fuel usage/range study. However, I can tell you that last season the boat used up approximately 21 gallons of fuel in about 14 hours of operation, per the hourmeter. The boat provided a comfortable ride cruising in the 3500/4000 RPM range and that was usually my speed. At 3500 to 4000 RPM the GPS typically indicates a range of 26 to 34 MPH, depending on conditions.

Based on my experience, I would not be concerned about traveling a range of 65 miles with 27 gallons of gasoline.


Perry posted 03-09-2003 02:37 AM ET (US)     Profile for Perry  Send Email to Perry     
34 mph at 4000 rpm? Unless you have a 22 pitch prop, there is no way you can achieve that kind speed at 4000 rpm. According to the prop calculator in the reference section, a motor with a 2.33 gear ratio and a 16 pitch prop should reach around 24 mph at 4000 rpm and 21 mph at 3500 rpm.
Matthew posted 03-09-2003 12:21 PM ET (US)     Profile for Matthew  Send Email to Matthew     

With my 90 2 stroke, I used about 13 gallons to travel 61.5 miles. Most of the time I was running about 3800 to 4200 rpms, but did slow down to an idle several times.

I would think that the 65 mile round trip wouldn't present any problems.


Bigshot posted 03-10-2003 01:25 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
65 miles? No problem! That is poughly 2-3 hours at cruise speed. I figure with my 70 I have about 8-10hours at cruise per tank. Remember that when you are running at 1000 rpms you are burning about 1 QUART an hour. At cruise that 90 should burn about 3gph and WOT maybe 8-10gph.
Traveller posted 03-10-2003 06:03 PM ET (US)     Profile for Traveller  Send Email to Traveller     
Thank you for the responses! I have spent my entire boating life in search of more speed, more power, farther runs in search of bigger fish, etc. - and I'm tired of it. My entire life is about to undergo a major change as I switch from being a classroom teacher to being an assistant principal. I won't have time to keep my offshore boat and get any use out of it. The Montauk 170 looks like it will do everything I want a boat to do, and do it quite nicely. I'll let everyone know when I order mine so I can get help rigging it right.
tabasco posted 03-10-2003 06:49 PM ET (US)     Profile for tabasco  Send Email to tabasco     
Before you put your money down you might want to check out the new Nanatucket 19
TightPenny posted 03-13-2003 03:32 PM ET (US)     Profile for TightPenny  Send Email to TightPenny     

Seems like the promotion is a demotion in your life style.

Promotions should give you more time and money to fish, not less. IMHO

TightPenny posted 03-13-2003 03:32 PM ET (US)     Profile for TightPenny  Send Email to TightPenny     

Seems like the promotion is a demotion in your life style.

Promotions should give you more time and money to fish, not less. IMHO

Traveller posted 03-13-2003 05:54 PM ET (US)     Profile for Traveller  Send Email to Traveller     
TightPenny -
I appreciate the sentiment of your message. I have anguished over my decision to leave the classroom for quite awhile. I am on the far side of 50, and will be 60 before I can retire with full benefits from the school system. Those benefits will be substantially better as a retired principal. I live near several beautiful lakes in the mountains of NC. If I can enjoy a boat on those lakes on weekends, and still have a useful boat for fishing and cruising the near-shore waters of NE Florida, I'll be happy.
Tabasco -
The new Nantucket 19 looks interesting. I saw the Montauk 170 at a BW dealer (+ all the pictures of your new boat on this site) and liked it a lot. I have a Dodge Ram 2500 Turbo Diesel, so pulling either boat should be no problem at all.

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