01 Ranger

[stewa107]

I have a 2001 ranger comanche 520 dvx that I've had for about 2 years. It has a 2001 mercury optimax 225hp on it. For RPM I'm topping at about 4800 and getting a top speed of 50 to 52 with a full load. What performance are people getting out of a similar setup. I feel I should have a little better speed.

[J._Bricker]

I agree @stewa107 that you should be getting better performance out of your boat. What prop do you have on it? Have you talked with your mechanic? I had an ‘04 520VX with a 225 Optimax turning a 25p Tempest and even with 923 hours on the original powerhead I would get 70mph (GPS) at 5600rpm (redline). 

[WRB]

2 hours ago, stewa107 said:

I have a 2001 ranger comanche 520 dvx that I've had for about 2 years. It has a 2001 mercury optimax 225hp on it. For RPM I'm topping at about 4800 and getting a top speed of 50 to 52 with a full load. What performance are people getting out of a similar setup. I feel I should have a little better speed.

What prop are you running?

Jack plate?

[stewa107]

Tempest Plus 25p

[Jig Man]

Something isn’t right.  Have you checked the P2P.  I had that same motor on a Champion 206.  It ran 65 mph at 5400 rpms.

[WRB]

Sometimes the way the boat and engine are setup can reduce speed. 

Engine height from plane surface could be too low, prop shaft should be 3 1/2” below the pad when parallel.

Too much weight forward keep the bow down.

Trim isn’t working properly.

Engine with dead cylinder or low compression.

Throttle isn’t advancing to full.

Tom