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Author Topic:   16-footer: c.1995 Mercury 60-HP Two-cycle

Tohsgib posted 04-07-2009 01:08 PM ET (US)
Just bought an older 16-foot hull with a c.1995 Mercury 60 two-cycle. What propeller should be used and what kind of boat and engine speed should be obtained? I am expecting probably 30-MPH to 35-MPH, but not sure if it has a tach as I am taking delivery tomorrow.
Tohsgib posted 04-07-2009 01:11 PM ET (US)
Yes Larry...I actually bought a BC made engine. I told you I was not against them, I just never had any luck with them except my trusty 1973 4hp. Smaller Mercs have always seemed darn reliable.
Is this the same as the current 3cyl 997cc engine around today or is it the older 3 or 4cyl design?
Tohsgib posted 04-07-2009 01:50 PM ET (US)
Ok I have a 1998 brochure and a 1992.
1998-2008 shows the 50/60 as a 3cyl 967CC 50CID w/ a 1.83 gear ratios. 1992 shows it as a 51.8CID 849CC w/ a 1.64 ratio.
My question I guess is this the smaller engine w/1.64 or the larger w/1.83?
L H G posted 04-09-2009 11:34 AM ET (US)
Nick, I have ZERO experience with the Merc 60, but have heard from Clark Roberts that it's a great engine, same block as the Mercury 50, a great performer. See if you can contact Clark. I think he runs one. It's the same size engine as the OMC 70's, and should run with them.
Lil Whaler Lover posted 04-09-2009 11:00 PM ET (US)
From the 1991 model year through the 1997 model year, Mercury built the 3 cylinder 60 with a 51.8 cubic inch powerhead, a gear ratio of 1.64, and an operating range of 5,000 to 5,500 rpm.
For the 1998 model year they increased the displacement to 59 cubic inches, but kept the same gear ratio and rpm range. I have always heard that this is a much stronger engine and was developed because the smaller block was not competative in this horsepower range.
Assuming you have the smaller displacement engine, Mercury suggested the following for props: 14" pitch, 900-1500 pounds, 14'-16' boat, 35-41 mph; 13" pitch, 1200-1899 pounds, 15'-17' boat, 32-38 mph; 12' pitch, 1500-2100 pounds, 16'-18' boat, 28-34 mph.
What ever it is, tell us more about it and how it performs.
Tom W Clark posted 04-10-2009 10:33 AM ET (US)
Nick,
Your 60 is known as one of Mercury's wimpier motors. It will be no where near as fast as an OMC 70.
You will want to use either the Mercury 11" x 12" Vengeance (part # 48-855856), Quicksilver Silverado (part # QS5164R) or the Stiletto 10-1/2" x 12" Triad 3.5 (part # C802312).
Tohsgib posted 04-10-2009 10:37 PM ET (US)
She has the 14" prop and perfoms just fine. A hell of a boat. Gonna take her out tomorrow. #20
Tohsgib posted 04-13-2009 11:20 AM ET (US)
Without a tach I can't get a great feeling but she handled 4 adults and 4 coolers just fine for a 40 mile run last Saturday. Only hitch is that biotch is quite thirtsy with a heavy load. burned roughly 4.5gph getting there and will check what it took to get home(with the wind). Performance is VERY acceptable but if always running 4 people it might be a tad lacking for you. I will get some numbers next time I go out and hopefully have a workng tach.

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Author	Topic: 16-footer: c.1995 Mercury 60-HP Two-cycle
Tohsgib	posted 04-07-2009 01:08 PM ET (US) Just bought an older 16-foot hull with a c.1995 Mercury 60 two-cycle. What propeller should be used and what kind of boat and engine speed should be obtained? I am expecting probably 30-MPH to 35-MPH, but not sure if it has a tach as I am taking delivery tomorrow.
Tohsgib	posted 04-07-2009 01:11 PM ET (US) Yes Larry...I actually bought a BC made engine. I told you I was not against them, I just never had any luck with them except my trusty 1973 4hp. Smaller Mercs have always seemed darn reliable. Is this the same as the current 3cyl 997cc engine around today or is it the older 3 or 4cyl design?
Tohsgib	posted 04-07-2009 01:50 PM ET (US) Ok I have a 1998 brochure and a 1992. 1998-2008 shows the 50/60 as a 3cyl 967CC 50CID w/ a 1.83 gear ratios. 1992 shows it as a 51.8CID 849CC w/ a 1.64 ratio. My question I guess is this the smaller engine w/1.64 or the larger w/1.83?
L H G	posted 04-09-2009 11:34 AM ET (US) Nick, I have ZERO experience with the Merc 60, but have heard from Clark Roberts that it's a great engine, same block as the Mercury 50, a great performer. See if you can contact Clark. I think he runs one. It's the same size engine as the OMC 70's, and should run with them.
Lil Whaler Lover	posted 04-09-2009 11:00 PM ET (US) From the 1991 model year through the 1997 model year, Mercury built the 3 cylinder 60 with a 51.8 cubic inch powerhead, a gear ratio of 1.64, and an operating range of 5,000 to 5,500 rpm. For the 1998 model year they increased the displacement to 59 cubic inches, but kept the same gear ratio and rpm range. I have always heard that this is a much stronger engine and was developed because the smaller block was not competative in this horsepower range. Assuming you have the smaller displacement engine, Mercury suggested the following for props: 14" pitch, 900-1500 pounds, 14'-16' boat, 35-41 mph; 13" pitch, 1200-1899 pounds, 15'-17' boat, 32-38 mph; 12' pitch, 1500-2100 pounds, 16'-18' boat, 28-34 mph. What ever it is, tell us more about it and how it performs.
Tom W Clark	posted 04-10-2009 10:33 AM ET (US) Nick, Your 60 is known as one of Mercury's wimpier motors. It will be no where near as fast as an OMC 70. You will want to use either the Mercury 11" x 12" Vengeance (part # 48-855856), Quicksilver Silverado (part # QS5164R) or the Stiletto 10-1/2" x 12" Triad 3.5 (part # C802312).
Tohsgib	posted 04-10-2009 10:37 PM ET (US) She has the 14" prop and perfoms just fine. A hell of a boat. Gonna take her out tomorrow. #20
Tohsgib	posted 04-13-2009 11:20 AM ET (US) Without a tach I can't get a great feeling but she handled 4 adults and 4 coolers just fine for a 40 mile run last Saturday. Only hitch is that biotch is quite thirtsy with a heavy load. burned roughly 4.5gph getting there and will check what it took to get home(with the wind). Performance is VERY acceptable but if always running 4 people it might be a tad lacking for you. I will get some numbers next time I go out and hopefully have a workng tach.