
How fast is a hp Mercury outboard? We tested in 15-20 mph wind with a chop on fresh water. The temperature was 74-degrees F, relative humidity was 64%, and we were at near sea level. The top speed of the boat 73.7 mph, burning 24.5 gph, for 3.0 mpg. How fast does a 20hp outboard go? Speed wise. 20mph*for the 9.8 and 25mph* for the 20 one up.
What is the top speed of a MerCruiser?
Re: 3.0 mercruiser top speed?? The max RPM for WOT on the engine is 4400 - 4800 so you don't want to run it at 5000. Checking the prop and compression is a good place to start.
What rpm should my engine run at?
The standard 1992 3.0L (115HP) should be propped to run between 4200-4600 RPM. If it's a 3.0 LX (135HP) it should be propped to run between 4400-4800 RPM. Download factory manual #13 for all the specs on your engine from here: If you have your boat trimmed correctly, then 29 MPH is a little slow.
How fast does your 18'tri hull go?
The tracker an 18' with an 125hp on it does 48mph, the old 79 18' fiberglass tri hull with a 120IO does 42mph. That is by gps not speedo's.
How fast should a boat speedometer read?
Does jumping up a prop add speed?

How much horsepower does a 1998 Grand Marquis have?
200 to 215 hp1998 Mercury Grand Marquis / Horsepower
How much is a 1999 Mercury?
The value of a used 1999 Mercury Mountaineer ranges from $677 to $4,052, based on vehicle condition, mileage, and options.
How much is a 98 Mercury?
How much is a 1998 Mercury Grand Marquis worth? The value of a used 1998 Mercury Grand Marquis ranges from $678 to $3,234, based on vehicle condition, mileage, and options.
What engine is in a 1999 Mercury Grand Marquis?
4.6 L V81999 Mercury Grand Marquis / Engine
Mercruiser 470 (3.7L) Marine Engine Options | PerfProTech.com
Question: What’s the best direction to go when replacing the old Mercruiser 3.7L/470 marine engines? Unfortunately there is no single good option for this when looking at a complete re-power.
Bayliner 185 3.0 Slow Speed ??-gctid467415
I just bought my first boat a 2012 Bayliner 185 3.0 Mercruiser with a 14.25 x 21 Al prop . The first trip out today with a full tank, 3 people on board and no
Top Speed? 1991 Bayliner Capri 185 w/135 HP 3.0L Mercruiser 19 Pitch
Hi Guys, Finally had a chance to get out on a relatively calm lake yesterday, with 3/4 full gas tank and 550 lbs of people on my new to me Bayliner. Running at WoT, I was able to get her up to 64.9 km/h which translates to almost exactly 40 MPH. Question is, is this about as fast as I should...
How fast should a boat speedometer read?
If you're comparing speeds, make sure everyone is using a GPS. Standard boat (pressure) speedometers are useless below about 20 MPH, and tend to read too fast by several MPH once they start working. I don't think I've ever seen one that read too slow, unless it was plugged and not working at all!
Does jumping up a prop add speed?
Although, jumping up in prop size won't exactly add 12+ MPH to the boat. You definitely need a clean bill of health for the engine before doing anything. There is a chance, just a chance, that it has a tiny prop AND you aren't trimming up the outdrive when on plane or top speed run.
How fast should a boat speedometer read?
If you're comparing speeds, make sure everyone is using a GPS. Standard boat (pressure) speedometers are useless below about 20 MPH, and tend to read too fast by several MPH once they start working. I don't think I've ever seen one that read too slow, unless it was plugged and not working at all!
Does jumping up a prop add speed?
Although, jumping up in prop size won't exactly add 12+ MPH to the boat. You definitely need a clean bill of health for the engine before doing anything. There is a chance, just a chance, that it has a tiny prop AND you aren't trimming up the outdrive when on plane or top speed run.
