25p

[bass_assasin]

I have a 202pro v Blazer with a 200 xri.....it flies with that prop but it takes a bit to get on plane.....would a 23 help it without taking away from top speed...it runs 78-82 mph now

 

[bass_assasin]

Re: 25p

also is my motor at the right height?

 

[rndn]

Re: 25p

What are your rpm's at wide open throttle with the 25" pitch prop?

 

[steelespike]

Re: 25p

also is my motor at the right height?

It appears it could go higher.If you have no venting problems now raise it to a point just before venting becomes a problem.Could help top speed and maybe hole shot a little.

 

[72SideWinderSS]

Re: 25p

Why the whale tail ?
It appears the jack plate is cranked all the way down, is it ?

 

[bass_assasin]

Re: 25p

This is the first jack plated boat I have owned and on my 21ft Laguna CC the whale tail helped the 150hp Black Max get up on plane at lower speeds. So I figured it might help on this one

 

[bass_assasin]

Re: 25p

the plate is almost all the way down.....I will get a straight on rear pic and add it

 

[72SideWinderSS]

Re: 25p

I would do all of my testing/tuning without the whale tail, you may find you don't need it. At those speeds, at WOT, I would have concerns about stability issues.
If you feel the need for more low speed planing control, I would check into Smart Tabs.

You have never identified the prop you are running now, nor have you posted your WOT RPM's. With out this information, any recommendations are just a Wild ***** Guess.

What is the distance from the end of the pad (the lowest part of the hull) to the joint between the LU and Prop ? This will help in suggesting an initial height setting for your jack plate.

Be safe.

 

[bass_assasin]

Re: 25p

The prop is a tempest 48-825866 a45 25p
From the transom to the Lower unit is 19"
The lower unit gear housing(rounded part of foot) is Just below the lowest part of the boat
I have no intention of ever running the boat that fast, the guy I got it from was a speed freak, so he wanted the speed...I would be happy at 50-55mph tops and a better hole shot to get skiers or tubers going.Rpm's 5300 and that was fast enough for me...still had throttle left

 

[72SideWinderSS]

Re: 25p

If you are primarily using your boat for water sports/toys by all means prop down to a lower pitch.

Be aware that you may be able to exceed the recommended max RPM for your motor. Advise any one else that drives your boat of that condition.

A 21" pitch should give you an excellent hole shot and around 55 mph @ 5300 with approx. 10% slip.

A 23" pitch should give you a good hole shot and around 59 mph @ 5300 with approx. 10% slip.

What you do with your own boat is entirely up to you.