Hey Skools

willy · #1 10-17-2005, 12:52 AM

Lord Skools info please, just reading the manual on the boat I just brought home. Remember when we talked about the 1999 115 Johnson Ocean Pro , on this boat and all the rpm I got was just under 5000. Well the manual says that it is a looper engine and that the max rpm is between 4500 and 5500 depending on prop used and load. Does that sound right to you and if correct that means I'm turning the right Rpm right?. And that means the highest mph I'm going to get will be about 30 mph like it gets now right? Someone I forget who was getting much faster mph on this site soI don't understand ???

Skools Out · #2 10-17-2005, 01:30 AM

that extra 500 rpms would give you more speed what prop are you running? and SS or Alum.?

willy · #3 10-17-2005, 01:57 AM

Aluminum but i can't see what it is now will have to look tommorow

willy · #4 10-17-2005, 02:01 AM

does that sound right to you, I was surprised at the manual but it is very clear, it is a looper engine and the max rpm is 4500 to 5500 depending on prop, when I took it out on sea trial with Fillet1 it maxed out at just a hair under 5000. I could of sworn someone said 1999 would not be a loop charged unit and they were getting 5600 rpm from their 115 hp, not sure what year theirs was

willy · #5 10-17-2005, 04:51 PM

Bump ;D

Skools Out · #6 10-17-2005, 05:00 PM

Here's your specs. That was the first yr as i can find of the 115 hp Looper V-4's.

Johnson V-4 115 hp
Year: 1999
Engine: 60º V
Horse Power: 115
Displacement: 105 cu. in.
Bore/Stroke: 3.60" x 2.59"
Cylinders: 4
Fuel Induction: Carburetor
RPM: 4500-5500
Weight: 319 lbs.
Gear Ratio: 2.0:1
Shaft: 20 in.
Gears: F N R

Systems:
Alternator: 5/20 Amp.
Cooling: Temperature & Pressure
Ingition:
Starting:
Exaust:

Other:
Scavenging: Loop
Steering: Remote Thru Tilt Tube

willy · #7 10-17-2005, 05:10 PM

Got it Skools that is what javascript:huh()
javascript:huh()the manual says too. So my 5000 rpm's should be right in the ball park depending on the prop I guess. Just surprised at the speed some guys said they got out of that engine on a v20 when mine is maxed and getting 28-30. Unless that enclosure drops it a lot

Skools Out · #8 10-17-2005, 05:14 PM

oh yeah that will so will the center of the windshield closed too. see which prop you have let us know and were you testing in Salt or Fresh water?

Salt water is faster always than fresh water.

Skools Out · #9 10-17-2005, 05:17 PM

Which have you tested it in? you need to make sure of your Max RPM in both waters if you are going to use it in both it will be slightly different. the slight difference could be enough to hurt the motor if you were to change the prop.

willy · #10 10-17-2005, 05:25 PM

Skools the prop on the boat has no markings whatsoever, the spare prop which looks exactly the same has just a serial # on it 011007 thats it no brand no other numbers. went over it real good