Power Issue?

[VA LSV]

prop dia, pitch, cup & shaft dia are stamped in the face and should be visable looking at the prop from the back of the boat. should be 14.25 x 14 , .90, 1&1/8 for the wakeboaed prop.

[mmandley]

Another place to look to see if your losing power or not that has nothing to do with your prop is engine compression.

Do a cylinder compression test to see if the engine is getting tired or not. You can by the compression gauge at the local car parts store for 20ish bucks.

Pull all the plugs out.
Disconnect the ignition system
Hold the throttle wide open and crank the engine about 4 revolutions.
You should see a number between 150 and 250psi
Now do this to all the cylinders and they all should be within 10-15% of each other.

This helps tell you if you have a bad cylinder making less power then it should. From there you can farther tell if its the heads or piston rings causing problems.

The prop is the first place to check i agree, but this is how you test your engine to make sure its in good condition also. When you have 10 people in the boat the prop makes no difference if your only making 150hp in a 300hp engine.

[dereklschmidt]

Well, just got home and crawled under there to get a better look. It is a 14x18 1 1/8" 4 blade prop. Is this what is causing my performance issues? Like I said, it will not pull up on plane with the ballast full. I would think the compression is fine as it runs smooth and never missed a beat, just struggling to get on plane when it's under a heavy load. How much will the 14.25 x 14 prop help? Thanks.

[moombadaze]

14x18--isnt that more of a top end/speed prop ?

[dereklschmidt]

not sure if it is or not, i know last time i was cruising, full tank of gas and only 2 people topped out right around 37 or so.

[OldeBoy]

not sure if it is or not, i know last time i was cruising, full tank of gas and only 2 people topped out right around 37 or so.

What was your RPM's at that time?

How long have you had this boat? Has it had this problem since you have owned it?

[dereklschmidt]

Not sure exactly what my rpms were at, I would say right around 4500 prob.

I bought the boat back in April and the performance has not changed any that I have noticed. I just recently started weighting it down more for a bigger wake.

[VA LSV]

going from 13.5 x 17.5 to 14.25 x 14 made a huge difference on my 05 lsv. you def need to reprop.

[dereklschmidt]

I may have to try that, I can not find that size from Acme is OJ the only one that has it? Also, I would want the .90 cup, correct? Basically the part # & description below?

PART #466
14.25 X 14 LC 1 1/8" 4-BLADE .090 CUP

[VA LSV]

Acme 1235 - 14.5 x 14.25 - .105 cup. I have the OJ 466. Both are good props. You can get 10% off at Skidim. Look on their home page for the codes.