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I have a cobra 4.3 with a cobra outdrive. It has a 14 1/2 x
I have a cobra 4.3 with a cobra outdrive. It has a 14 1/2 x 19 prop. I was given a ss prop, 15 1/4 x 19. Can I use this prop and what is the difference. I do a lot of trolling and occasionaly pull the… read more
Jason
Jason
Marine Mechanic
18,658 satisfied customers
Need some advice on a pontoon boat prop. I have a 2015
Hi! Need some advice on a pontoon boat prop. I have a 2015 sylvan s3 pontoon with a 150 mercury 4 stroke engine. My wot is 4300 with a 3 blade aluminum 15.25 x15 prop. max speed 29 MPH. I know the max… read more
Charles
Charles
Certified Mercury Tech
5,079 satisfied customers
115 HP 4 stroke mercury outboard 5000-5500 rpm, sounds
115 HP 4 stroke mercury outboard 5000-5500 rpm, sounds great, formerly runs @ 38mph top speed, 13' x 19" SS prop, prop hub is intact, new power trim assembly, no extra weight in 17' aluminum v-hull, t… read more
Charles
Charles
Certified Mercury Tech
5,079 satisfied customers
I have stern drive motors and 18 3/4 x 19 props on now will
I have stern drive motors and 18 3/4 x 19 props on now will I get a better top end speed if I go to a 17 3/4 x 21 . the boat is a 35 ft cruiser… read more
Jason
Jason
Marine Mechanic
18,658 satisfied customers
I have a 2008 167 Cutter sportster with an 2008 Mercury 50
I have a 2008 167 Cutter sportster with an 2008 Mercury 50 hp 2 stroke, the boat weighs 1500 lbs and does 30 mph at 4800 rpm but is sluggish getting up on plane. It currently has a 19 pitch aluminum p… read more
Jason
Jason
Marine Mechanic
18,658 satisfied customers
I have a 2001 Bass Pro Targa 17 Tracker with a 90hp four stroke
I have a 2001 Bass Pro Targa 17 Tracker with a 90hp four stroke mercury outboard. The propeller delivered with the boat is a 13.25 X 17. Boat weight approximately 2618 pounds. I cruise at 35mph @ 4,00… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
This boat runs 28 mph at 4500 rpm does it have the right prop?
This boat runs 28 mph at 4500 rpm does it have the right prop? Do stainless props have a real advantage? This boat is new to me and is not at all what I'm used to. Ran a 17 ft 1974 Signa I/O up until … read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
2009 Honda Outboard 200 4 stroke. Repowered a Tracker Marine
2009 Honda Outboard 200 4 stroke. Repowered a Tracker Marine 25FT Tritoon with this motor. The motor came with a 4 Blade 14 /14 x 17R Prop. At WOT I am turning 5000 rpms and running 38-40 mph and that… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
1978 16ft alum monarch boat with mercury 500 50 hp . what
1978 16ft alum monarch boat with mercury 500 50 hp . what dia and pitch prop would work best? I now have a 9 1/2 dia. 14 ss. pitch and the motor seems to only d=be reving about 3000- 4000 at wot.… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
Have a 40hp 1989 Yamaha outboard 2 stroke attached to a 20
Have a 40hp 1989 Yamaha outboard 2 stroke attached to a 20 ft pontoon. Am having rpm problems. It only get between 3000 and 3500 rpms. Has throttle left but no power.… read more
Jason
Jason
Marine Mechanic
18,658 satisfied customers
I have a 2001 Evenrude 135 horsepower E-tec 2 cycle engine
I have a 2001 Evenrude 135 horsepower E-tec 2 cycle engine and it runs great but I am only pulling 3900 RPM. The current prop is a 15 x 17 and I have this on a 20' center consol T-top 204 Angler fishi… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
Good after noon, I recently purchased a 1990 Bass Cat Caracal
Good after noon, I recently purchased a 1990 Bass Cat Caracal with a 1990 Suzuki DT 150 Super Six. I have three questions: 1) What is the WOT (rpm) for this motor. 2) what is the compression supposed … read more
Jason
Jason
Associate Degree
210 satisfied customers
I have a Rosborough 246 Sedan with a 2006 Evinrude 150 Ocean
I have a Rosborough 246 Sedan with a 2006 Evinrude 150 Ocean O/B. Prop is 15.5 x 18 3 blade aluminum. WOT RPM is 4650 Althought the boat is usually operated at much lower speeds, I want to make sure I… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
I have several questions related to one question. I have a
I have several questions related to one question. I have a 17' boat - open bow - It has a 90 hp Evinrude outboard about 1986 - 1989 year. I would like more bottom end power, to pull tubers, wakeboarde… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
good evening. I have a houseboat on lake powell in utah.
good evening. I have a houseboat on lake powell in utah. it's a heavy old slug, 50 footer and I'm sure weighs a ton or about 15 tons. it has 2 2002 yamaha 60 2 strokes. the other owners think that 220… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
What size replacement propeller is appropeiate for my 90 HP
What size replacement propeller is appropeiate for my 90 HP year 1999 Johnson outboard boat motor installed on a 22 ft pontoon boat.. Does the age of the motor make a difference? It runs about 100 hou… read more
Jason
Jason
Associate Degree
210 satisfied customers
i have a 1980 evinrude 35 hp twin thru exhaust what prop should
i have a 1980 evinrude 35 hp twin thru exhaust what prop should be on it? currently has a 10 x 15 which does not seem right… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
2.5L 120 HP Mercruiser does not reach proper W.O.T rpm
1983 sea ray seville 120 HP Merc. I can not get engine to reach correct WOT RPM of 4300, most I can get is 3500 and I''m running a 14.5" X 17" aluminum prop top speed I have acheived is 25-30 mph on a… read more
mastertechtim
mastertechtim
Repair Shop Owner
Associate Degree
48 satisfied customers
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Meet the Experts:

Dominick

Dominick

Marine Mechanic

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25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

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Ted G.

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John White

John White

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Jason

Jason

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Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

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Jeff G.

Jeff G.

Marine Mechanic

4,729 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

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USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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