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32 donzi Hole shot problems

Old 09-15-2020, 07:11 PM
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I saw one for sale a while back and he had set back brackets on it, pretty sure he said he didn't like the way it ran without them. Search old THT classifieds,
Old 09-16-2020, 01:44 AM
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This is the boat I was talking about, I get up too early so I searched for you

32 ZF Donzi CC with 2007 Yamaha F250's
Old 09-16-2020, 05:07 AM
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We lost no top speed with the longer motors, actually gained some as the added trim range and deeper gear cases gave the boat more bow lift. Mid range also improved thanks to the additional bite.
Old 09-16-2020, 05:29 PM
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Originally Posted by cayman donzi View Post
I thought the same thing about the props. I have a 29zf with same props and same power and my WOT is 5500 rpm's
If memory serves me right, we hit about 5500 during the sea trial at WOT. I will admit though the boat has the old style gauges from the previous motors and half of them don't work. A smartcraft upgrade is also in this boats future.
Old 09-16-2020, 05:35 PM
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Originally Posted by pooldoo73 View Post
Trim tabs all the way down on take off helps a huge amount on the 32ZF if you aren't doing it already.
I did mess with them the last trip out and it seemed to help a little, however I discovered that one motor had a trim/tilt leak so I couldn't play with motor trim at the same time. Got the leak fixed so next trip out I'll be able to play with it a little more.
Old 09-16-2020, 05:40 PM
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Originally Posted by PeteVB View Post
This is the boat I was talking about, I get up too early so I searched for you

32 ZF Donzi CC with 2007 Yamaha F250's
Lol thanks, I've actually read through that post before on here. He mentioned it help with handling but never mentioned directly about hole shot. However those brackets look like they would put the motors a little deeper and also possibly solve my issues as well. Worth investigating.
Old 09-16-2020, 05:44 PM
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Originally Posted by sundancekid View Post
We lost no top speed with the longer motors, actually gained some as the added trim range and deeper gear cases gave the boat more bow lift. Mid range also improved thanks to the additional bite.
If that's the case, I'd definitely love to get it done but $1800 is a little hard to swallow at the moment. Wish I would've done that instead of having the pads re-done.
Old 09-16-2020, 06:42 PM
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Originally Posted by cayman donzi View Post
Please let us know when you resolve this issue. I am considering moving up to this model. thanks
You won't regret it I can tell you that. Even if this issue is never resolved it's still a great boat that is well laid out and a fishing machine.
Old 09-16-2020, 06:46 PM
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Originally Posted by FlyingTexan View Post
1) once on plane what’s your WOT RPM?
2) are engine RPMs matched?

3) try changing one variable at a time. If you’re already hitting your max RPM with no spare power left on the table then step down your prop inch and go with a larger diameter prop. Find a local shop that does repowers they usually have a lot of used props lying around. Not to keep but see if you can borrow something just to see if a different prop could potentially solve the issue. If so then go find you a new set.

on boat my boats props were the issue. My pathfinder, no steps, would do the same thing when we put the new 225sho on it. I went to Palacios, Tx and started trying out various props and found one that wasn’t pretty but instantly let me know it was the day to go. Bought a new one and been running it hard ever since.

sticking your engines 2.5” deeper might fix the issue but would take a hit on efficiency and performance. Would feel like it’s bogged down and would probably knock 500rpm off your WOT so if making RPMs as you should at WOT you could very well need to change your props anyway to get those RPMs back. So before moving engines, adding shafts, etc go see if you can step down your inches on your prop and go bigger in diameter.

22p on a 225 and that heavy of a boat seems like a pretty aggressive prop. I’d think you’d find a lot more confidence stepping down to a 19p with bigger surface area. Assuming you’re making RPM at WOT. 22p on that large of a 4 blade seems like it’d really be bogging the engines and dropping them deeper would hit them ever harder.

I fully admit my ETECS are 175s and I know you’re running 225s. I just can’t see how a 4 blade prop would make more sense on an offshore stepped hull. You’re using a smaller diameter prop in a cavitation induced water flow. Do the motors feel like they’re struggling? 15.25” prop at 22p just sounds like a lot. If this was a “team” boat did they prop it for WOT bragging rights? I see they make a 20p Bravo
I'm definitely not opposed to playing around with props if I can find some. If I remember correctly from my sea trial at WOT the motors were turning 5500 or 5600 rpm. I've only owned the boat for 2 months and haven't done another wot run since. With the motors trimmed properly, I'd imagine it would be about maxing out at 5700.
Old 09-17-2020, 07:47 AM
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Originally Posted by Drifterfishing View Post
If that's the case, I'd definitely love to get it done but $1800 is a little hard to swallow at the moment. Wish I would've done that instead of having the pads re-done.
Cheaper than installing those Stainless mini brackets, engines need to come off and the brackets are $600 each starting and go up from there depending on the amount of setback.
Old 09-17-2020, 07:54 AM
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Originally Posted by sundancekid View Post
Cheaper than installing those Stainless mini brackets, engines need to come off and the brackets are $600 each starting and go up from there depending on the amount of setback.
Do you think the setback brackets will work?
Old 09-17-2020, 08:57 AM
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Sundance has the experience you’re looking for to get your boat right. He’s taken the guesswork out of it. Follow his advice and enjoy your boat
Old 09-17-2020, 09:18 AM
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My friend with a 29 Donzi would advance the throttles. When the boat stalled getting on plane he would chop the throttles. When the bow dropped he would power back up and the boat would hop on plane.

May help until you get a permanent fix.
Old 09-17-2020, 09:22 AM
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Originally Posted by Tritanic View Post
My friend with a 29 Donzi would advance the throttles. When the boat stalled getting on plane he would chop the throttles. When the bow dropped he would power back up and the boat would hop on plane.

May help until you get a permanent fix.
Interesting, might have to give that a shot next time.
Old 09-22-2020, 12:04 PM
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Originally Posted by Drifterfishing View Post
Do you think the setback brackets will work?
They will help setting the engines back more, but it is causing undue stress to your transom for which it was not designed.
Old 09-22-2020, 12:11 PM
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Originally Posted by sundancekid View Post
They will help setting the engines back more, but it is causing undue stress to your transom for which it was not designed.
Gotcha, I'm pretty much set on getting the extensions. Just gotta get the cash together for it, and fingers crossed I have the same experience you did and it fixes the problem. Also, I took the boat out Sunday and ran it in the river. At 4500 rpms I was only getting about 35-38 mph (gps). According to the slip calculator that's about 31% slip which I know is too high. Do you think thats related to the shaft length as well? Or do I have a prop issue to worry about too?
Old 09-22-2020, 01:30 PM
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You don't happen to have a pic of the boat?
Old 09-22-2020, 01:37 PM
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Originally Posted by shore View Post
You don't happen to have a pic of the boat?
I have several of the boat, just no good angles of props and motors right now.
Old 09-22-2020, 01:38 PM
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no, I was curious if I know this boat. Is it black and white?
Old 09-22-2020, 01:41 PM
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Originally Posted by shore View Post
no, I was curious if I know this boat. Is it black and white?



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