2011 nitro z-8 250 pro xs boat chime walks about 66 or 67 mile ph

[assinbass]

i can only get 69 miles ph out of boat it chine walks at about 66 or 67 this is gps speed on speedometer 75 how fast will the boat go if i can drive thur the chine walk how much speed can you gain if you can drive thru the chine walk i get very nerous when it chine walks how do you learn how to drive thru the chine walk

[Gambler Bob]

Most likely your engine setup is off. What kind of prop are you using and what are your RPMs, and what is your prop to pad measurement. Most likely your engine is too low and you need to raise it up. Check out the Nitro setups thread stickied to the top of the Nitro page to find out what other guys are running on their Z-8s, but generally you start about 3-1/2 below the pad and move up a 1/4" at a time, until you loose speed or your water pressure gets too low. If your engine is setup is to low it will cause your boat to chine walk. You should be able to get around 75 MPH (GPS) with that boat setup properly.

[transamz9]

^^ X2

[assinbass]

26p fury with bobs jack plate the best i can measure it is 3" all the way down on the jack plate this speed of 69 is with tackle and two people i weight 260 and my son 210 rpms 5900

[assinbass]

also thats the lowest the eng will go i do not know if i am measureing right i measure from the center of the prop shaft to the ground and the bottom of the pad to the ground after i level the boat and the motor and substracted the two numbers i was told by the dealer you just have to learn how to drive through it how much speed will the boat gain if i can learn how to drive throught it i real do not like the chine walk i have seen some bad wreck on video on you tube where do i go to have the boat check out to see if it is set up right.some told me to fill the live wells on the passager side and it may help this speed is not with the livewells filled

[Gambler Bob]

U most likely need to raise your engine, try that first.

[transamz9]

You need to raise the motor a little at a time like what was said above ^and it will help a lot. Also you need to check the balance of the boat side to side. The next time you go out take a 2-4' level and lay it on the deck in front of the console(s) and put every thing where it will be when running, including you and your partner. See how level the boat sits in the water. If off then move some stuff around to get it level. See if that helps. You will never drive "through" it. You will have to learn to "drive it".

[Baja 252]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by transamz9 &raquo;</td></tr><tr><td class="quote"> You will never drive "through" it. You will have to learn to "drive it". </td></tr></table>

X2 I think telling someone to "drive through it" is very dangerous advice.

[T Mike]

Learning to drive a high performance boat is like when you first started to learn how to ride a bike. Your gonna wobble at first. I would suggest for you to somehow take a more experienced boat driver out with you to help you learn how to drive and counter correct the chinewalk through your steering.

It's very difficult to explain it in words but much easier to show you in while your in the boat. It will take you a couple of weeks. At first you'll think dang this is alot of work. But as you get accustomed to your new boat you will be driving it like there is no chinewalk there at all. Set up will help some but it's always been my opinion if your not walking your not getting the most out of your boat.

Here is a great article from the Triton board that gives some good tips and understanding of chinewalking..

http://www.bbcboards.net/zerothread?id=390628

[assinbass]

need your help nitro bob thanks on the set up page they said to run the boat at 3 1/4 to 3 3/16 to get the most out of it thats below the pad mine is 3' below pad and thats it it want go any lower

[Gambler Bob]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by assinbass &raquo;</td></tr><tr><td class="quote">need your help nitro bob thanks on the set up page they said to run the boat at 3 1/4 to 3 3/16 to get the most out of it thats below the pad mine is 3' below pad and thats it it want go any lower</td></tr></table>

http://www.bbcboards.net/zerothread?id=582466

Click on the link, about 3/4 of the way down there is a picture of how to measure your prop to pad measurement, it helps to have a 2-4 foot level and level your boat using the wheal on the front of the trailer to get a more accurate measurement. If you are really at 3" below pad try moving it down a quarter inch, but that usually does not help with chine walk. I would still go up and you just need to make sure you dont go under the recommended water pressure for you motor. You are going to have to play with the setup at the lake, bring a big socket wrench or torque wrench and the right size sockets and sharpie marker or something to mark on your jackplate where it was set at on previous runs.

Nitro boats are not known for having bad chine walk issues, when setup properly, some of the real high performance bass boats you have to learn how to drive, generally nitro is not one the boats you have to learn how to drive, they just weigh too much. Remember a little bit of chine is not a bad thing either, my boats chines a little with just me in it and low on gas, but if your boat is all over the place you most likely have a setup problem.


Modified by Nitro Bob Rourke at 8:22 PM 2/4/2012

[Gambler Bob]

How long have you had the boat, are you the first owner.

[Blevins]

Is it possible you could be raising the trim up too high and maybe too soon? I know i did this on my Z8 the other day and it chined like mad and im VERY used to driving through chine or i should say correcting it.

[assinbass]

i have a hyd jack plate i can rasie it or lower it i have done the measurements 3" is as low as it will go you are right the chine walk is not real bad but bad enough to make me get out it at high speeds it will not chine walk if i do not use the trim but when i use the trim it starts to chine walk if i do not use the trim the best the boat will do is 67 mph loaded and to people maybe i need a different prop i do not know first boat i ever had to chine walk what i was wanting to know how much fast will the boat go if i can get through the chine walk it seems that is is as fast as it will go not near 74 or 75 i have only had the boat 4 weeks i am not the first owner i tried raising the motor and it blows out and starts beeping i can only raise it about 2"but it still chine walks at high speeds do not know what to do

[assinbass]

if i do not use the trim boat will only go 67 mph

[TRCM]

You need to lower the motor on the JP. Fury props like to run deep, and 3" probably isn't deep enough.

If you have it set up so you can drop the motor to 5" below pad (for rough water), then you can also raise it to 1" above pad, which is way too high for a Nitro anything.

You should start around 3 1/2" below pad with a Fury, and tune it from there

[BMCD]

Yeah they need to lower the motor on the jp. One or two bolt holes.

[Blevins]

The more i read the more i agree. The RPMs are very high for the low speeds. Too much prop slip from prop being to high could be your issue.

But even when those start matching up you will have to learn how to control chine if you want to see the max performance from your rig. All of these boats at high speed of their hull design are going to want to chine and will need some steering input to keep them on track. If i let go of the wheel at 79mph on my Z8 it will chine and if not corrected properly id be taking a swim!

[Gambler Bob]

The more info you give, the more i agree with the others also. Seems to me now that you need to drop your motor 2 holes, each hole should be 3/4", so that should allow your motor to go from 4-1/2 below pad in rough water to however high your hydraulic jackplate will allow. If you can set it up to run from 4-1/2 - 2-1/2 below pad you should be good. You are probally looking at about 2 hrs labor to move your motor, generally around 80-100 bucks per hour are labor rates.

[assinbass]

thanks i wil try that