asking for a friend, does anyone know the max rpm for a 2013 Yamaha 175 hpdi? thanks
asking for a friend, does anyone know the max rpm for a 2013 Yamaha 175 hpdi? thanks
No such thing as a 2013 Yamaha anything since Yam stopped having model years a long, long, time ago.
But all Z175's and VZ175's have a redline of 5500 RPM.
See section four of the owner's manual for specifications.
http://yamahaoutboards.com/owner-res...owners-manuals
From the website:
VZ175 Specifications
Engine Type V6 (76º) Displacement 158.4 ci (2596 cc) Bore x Stroke 90 x 68mm (3.54 x 2.68 in.) Prop Shaft Horsepower 175 hp at 5000 rpm Compression Ratio Cyl.1-4 6.7:1; Cyl.5-6 6.4:1 Fuel/Induction System HPDI Loop Charged Exhaust Through Propeller Intake N/A Ignition System TCI Micro Computer Spark Plug BKR6E-KU-10-000 Alternator Output 45Amp at 6000 rpm Starting System Electric Lubrication Precision Blend Oil Injection Engine Oil Capacity optional Full Throttle RPM Range 4500-6000 Cooling Water/Thermostatic Control Recommended Engine Oil Yamalube® 2M (See Owner's Manual) Recommended Fuel Unleaded Regular (Minimum Pump Octane 87) Recommended Fuel Filtration Yamaha 10 Micron Fuel/Water Separating Filter (external) Ethanol Blend Limit 10% Maximum Gear Ratio 14:26 (1.86) Gear Shift Forward, Neutral, Reverse Shaft Length L = 20" Degree of Tilt 78° Degree of Trim -4 through 16° C.A.R.B. Rating 2-Star Dry Weight 213kg (468 lbs) Mounting Centers 28.6" Steering Angle (maximum) 32° from center, either direction Warranty 2 Year Limited Pleasure Boat - 1 Year Limited Commercial
I think the over-rev limiter is 6100. Mine runs between 5500 and 5700 depending on conditions and load.
2018 Skeeter ZX250
2018 Yamaha 250 SHO
It's best to prop these motor on high end of rpm range to minimize detonation, close to 6k.
Thanks guys, the motor is turning a stock 25 pitch prop to at 6000 rpm now. Its on a skeeter tzx190 set at 2.5 below pad with 25 psi. The holeshot is ok . Do you think it needs a 26 pitch or just drop the motor to get the rpm down?
I think the Yam website is incorrect. Owner's manual shows 5500 as the redline. Never seen a Yam before with a 1500 RPM range either . OM shows a 4500 - 5500 range.
Being propped to get to the top of the RPM range is good. Just don't allow the motor to go the redline, if it will.
The 25m prop is the right prop for that boat/motor combo. Rpm will go down a little in the summer. And it sounds like hight/set up is just about right for light load.
Originally Posted by jethro1
? Yamaha made that owner's manual, so if anything, the owner's manual would be wrong. I know there is a rev limiter, if that's what you mean by redline. I run my Yamaha well over 5500 rpms, as many others do as well. There is a recommended rpm range. There is a rev limiter, and if you were to hit the rev limited, the motor would alarm.
Last edited by BassManGuy; 02-13-2014 at 09:43 PM.
The Rod Glove Pro Staff
Fairly sure the rev limit is 6150. Listed full throttle rpm ranges don't mean a whole lot to me. Would you prop an engine WOT at 4500? See what I mean?
Yamaha Japan, the creators of the motors, creates the owner's and service manuals. The website information is by Yamaha US, who is just the US distributor. One way or the other, something is not correct. Given that all of the owner's manuals are saying 5500 (many of them) I don't know which to believe. Don't have access to service manuals from where I am now.
By redline I am referring to what the engine maker says is the not to exceed engine RPM. A rev limiter is a device used to protect a motor when the driver is not doing his job properly. It kicks in above the redline value is of course.
I would agree that a 1000 or 1500 RPM range is silly. Yamaha themselves recommend to prop to get to the top of the range. Many boaters unfortunately are propped way to low and wonder why the motor performs like a dog.
What kind of speed are you getting? You should be hitting mid-60s.
if you are not then you are probably getting too much slip and need to drop down to about 3". Those of us that have tried getting the motor to 3" or higher experience very stiff steering, poor handling, and quick drop off in water pressure in turns.
Lots of good info on the Skeeter board on the TZX/ZX190s.
Usually a 25 or 24 pitch runs best. Time of year and loading determine what is best. I run a 24 pitch all year. 65 mph in the winter and 62/63 in the summer about half loaded.
2018 Skeeter ZX250
2018 Yamaha 250 SHO
The best speed has been 67 gps with a one person and half tank of fuel and water in mid 50s. With 2 and full tourney load 62 to 63 at 5800 to 5900 rpm. The motor will turn to 6k even with full load but didn't want to because wasn't sure what max rpm was and didn't want to hurt the motor
The 2012-2014 ZX190 and TZX190 use the same hull but have different top caps (and other features). The TZX now comes with a 6" jackplate (2012s were without a jackplate stock) where as the ZX comes with a 12" jackplate. From what I have seen on here the performance numbers for both boats are almost identical.
67 is about max with the 190 hull with a 175. If you are turning 5800-5900 RPMs and only getting 62-63 you are getting a lot of slip. To me it sounds like the motor is too high and over trimmed.
In comparison the Yamaha performance bulletin the ZX190 hits 62.8 MPH at 5400 RPMs with a 25 pitch prop. That's with two people, half fuel, and some tackle load and empty livewells. The numbers folks post on here are pretty consistent with that.
The thing you don't want is a lot of slip which means the prop is probably cavitating and will blow out in turns. This is bad for the prop, gives bad handling, and will cause the motor to over rev and hit the limiter.
From the factory Skeeter sets the pad to 3 3/4". That is a very conservative and safe setting. 3" is about as high as I would go. The water pickups are too high on the 175 to go much higher without risk of water pressure dropping off with as much trim as you will be using.
In my opinion I would drop the pad to prop down to 3 1/2" and bring it back up a 1/4" at a time. Be careful not to over trim. Your max trim up will be about a needle's width below the 3/4 mark on the trim gauge. With a 25p prop max you should be hitting is 5400-5500 RPMs. To get the RPMs up get a 24P prop. I would recommend the Turbo TXP 24P. A lot of the same characteristics of the Yamaha 25M1 so there will not be any surprises in handling or performance.
I have my pad/prop set a 3 1/4". I have a heavily loaded boat (I carry Tacklewarehouse, BPS, and Academy in my lockers) and with 3/4 fuel and full lives wells I still hit 62/63 at about 5600 RPMs.
2018 Skeeter ZX250
2018 Yamaha 250 SHO
Thanks for the info, I do think the motor is to high going to drop down to 3.5 and start over. The boat is a 2013 model and did come with 6" jackplate. One thing I forgot to mention is the prop blows out when getting on plane. Could this also be because the motor is to high?
Yes, being too high can cause that. Also, trimming too quickly can cause it.
With these boats its a balance between straight line speed and handling. When you get your speed where you want it check your handling. Can you take turns to your liking? Does the prop blow out in turns? Water pressure drop too much? If so, drop it back down 1/4".
Trim makes a huge difference, too. When I'm on plane I put my needle where I described. Watch the speed and compare to the RPMs. If you trim higher and the speed drops or stays about the same but the RPMs climb you are getting too much slip. If you trim down RPMs and speed will both drop. At high speed it only takes a touch on the trim to make a difference. Where your final trim will be depends on your load.
Also keep in mind your low speed performance. The high the motor the flatter she will run. I noticed I would get porpoising at about 20 MPH when I was at 3 3/4" At 3 1/4" it planes smooth down to about 19 MPH.
I also noticed a slight chine walk at 3 3/4" above 60 MPH. At 3 1/4" it's stable all the way up to 66 (as fast as she will got at this height).
2018 Skeeter ZX250
2018 Yamaha 250 SHO
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