2010 nitro z7 with 200 pro xs help

KsmNitro · August 09, 2016, 06:56:15 PM

Hello I am new to the forum. But I have a few questions about set up of my nitro z7 with 200 pro xs. It has a hydro dynamic 8" jack plate and a 25p fury prop. I'm only getting 62mph out of it with two guys and light load and by myself once I hit about 63-64 the chine walk is unbearable im only getting roughly 5400rpm out if it also if anyone has any suggestions on motor height or props would be much appreciated. Thanks

Mike Cork · August 09, 2016, 08:59:45 PM

Equipment sounds good.

Do you know you motor hieght? Pad to prop shaft? To high and too low can cause early chine walk. I'd start there.

How's your hole shot?

We have a couple guys that run or have run Nitros and they have a lot of experience, they'll check in shortly, knowing your motor hieght will help them dial you in.

KsmNitro · August 09, 2016, 10:00:34 PM

I am not sure I will measure and post tomorrow. The hole shot is decent with light load and once the live wells are full it slows down quite a bit.

Mike Cork · August 10, 2016, 07:19:52 AM

That's an indication that you might be too high. However just an indication, let's see what the numbers are first.

Bud Kennedy · August 10, 2016, 07:40:09 AM

Just posted a link in the Props forum that may help you with your measurements and trouble shooting

KsmNitro · August 11, 2016, 04:15:40 PM

Sorry guys busy with work I'll be taking her out tomorrow and get the measurements posted

KsmNitro · August 12, 2016, 03:13:53 PM

Okay so I measured it today it's around 2 1/2 bellow pad if that helps any

Bud Kennedy · August 12, 2016, 03:24:46 PM

Might be a wee bit high but I do have a couple more questions. Does your prop have vent plugs? How high is your rooster tail behind the boat when you are on plane. What is your water pressure readings? Are you getting any prop blow out in turns? Did you follow the steps posted in the Props forum to measure your prop to pad?

KsmNitro · August 12, 2016, 09:50:24 PM

Rooster is about the hight of cowling between 24-26lb water pressure. I'll check vent plugs and get back to you and if i crank the wheel after getting on plane it will wash but on normal turns no prop blow out and I put a straight edge on the bottom of pad and measured down to prop shaft. Sorry I am new to all of this.

Bud Kennedy · August 13, 2016, 08:58:49 AM

Seems like it would be a good idea to lower the motor a bit. A traditional depth of 3 1/2" should be your lowest point. I would start by lowering about 1/2" at first and see what your performance becomes. Incremental adjustments should be 1/4" at a time. The water pressure you state should be a bit better but lowering the motor might just help that. The good news is that you are clearly within the adjustment area and now it just becomes a matter of getting some valuable seat time in your boat to better understand the chine walk deal. Often this can be overcome just by becoming a more experienced driver. Good Luck let us know how it goes.

KsmNitro · August 13, 2016, 09:39:48 AM

Alright thanks for all the advise I'll be lowering it a half inch and see how it goes. Thanks again

Bud Kennedy · August 13, 2016, 10:04:53 AM

Good Luck on your changes. I am also interested in how quick to plane is your boat. I Can't help on your prop selection. Hopefully someone else will come along that can add some value to that part of the discussion. Props can be a real pain to figure out but I like to wait on making any prop changes until the rest of the set up is performing a bit better.