Go Back  The Hull Truth - Boating and Fishing Forum > BOATING FORUMS > The Boating Forum
Reload this Page >

Boat porpoising. Horrible spray. I think I know the answer but dealer giving pushback

Notices
The Boating Forum

Boat porpoising. Horrible spray. I think I know the answer but dealer giving pushback

Old 06-02-2021, 10:42 AM
  #41  
Admirals Club Admiral's Club Member
 
Join Date: Feb 2011
Posts: 8,395
Received 1,376 Likes on 764 Posts
Default


Old 06-02-2021, 10:44 AM
  #42  
Admirals Club Admiral's Club Member
 
Join Date: Apr 2008
Location: Annapolis, MD
Posts: 1,159
Received 474 Likes on 231 Posts
Default

That Engine/Lower looks awfully long for that transom. Notwithstanding the angle of the photo, that AV plate appears well below the bottom to the centerline of the hull.
Old 06-02-2021, 10:52 AM
  #43  
Admirals Club Admiral's Club Member
 
Join Date: Dec 2017
Location: Merritt Island FL
Posts: 205
Received 86 Likes on 46 Posts
Default

Maybe it's a 30" motor on a 25" transom? The double horizontal surfaces above the cav plate sure make me wonder....
Likes:
Old 06-02-2021, 10:53 AM
  #44  
mgd
Senior Member Admiral's Club Member
 
Join Date: Nov 2003
Location: Florida
Posts: 948
Received 230 Likes on 149 Posts
Default

SHEESH.. Just get a dang pic from the side already!!!!!!!!!!!!!!!!!!
Likes:
allrelative, Capt. Fred, FinsUp12, satbeachbill, ul412al, whitey436 and 1 others liked this post. (Show less...)
Old 06-02-2021, 10:56 AM
  #45  
Senior Member
 
Join Date: Aug 2015
Posts: 264
Received 52 Likes on 28 Posts
Default

the pic is evidence of a left hand rotation motor that still should perform OK, but this a huge problem in valuing the motor... will be hard to resell later also service and parts could be a prob as well as getting props. i also question a four blade prop for this small medium performance boat....typically better overall performance with a 3 blade. a HUGE disclosure deficiency on the part of the seller that explaining to the customer exactly what he was/is purchasing....OP isnt working with the cream of the crop as far as a boat dealer... Good luck.
Old 06-02-2021, 11:07 AM
  #46  
Admirals Club Admiral's Club Member
 
Dacman's Avatar
 
Join Date: Oct 2014
Location: Summerville SC
Posts: 9,717
Received 1,139 Likes on 859 Posts
Default

He has a transom step, I think that is what it’s called, that picture messes with the eye due to everything is new and bright white. Transom is deeper than what it looks like in pict.
Likes:
Old 06-02-2021, 11:08 AM
  #47  
Admirals Club Admiral's Club Member
 
Join Date: Apr 2011
Location: Port Orange Florida
Posts: 2,557
Likes: 0
Received 35 Likes on 27 Posts
Default

pretty sure they don't make 30" df115's.
Likes:
Old 06-02-2021, 11:11 AM
  #48  
Admirals Club Admiral's Club Member
 
Dacman's Avatar
 
Join Date: Oct 2014
Location: Summerville SC
Posts: 9,717
Received 1,139 Likes on 859 Posts
Default


Like this I think
Likes:
Old 06-02-2021, 11:42 AM
  #49  
Admirals Club Admiral's Club Member
 
Join Date: Feb 2010
Location: Marathon Fl. (Sombrero Isle)
Posts: 3,733
Received 598 Likes on 409 Posts
Default

I have friends with Zuk's A whole different setup than yours, but on both of them and they are difference HP on each of them. The spray is terrible until the motor is trimmed up. I think it is something to do with the zuk lower unit design. Either way it is not a big issue as once they are up on plane they can trim and the spray subsides.

Thus IMHO the dealer needs to get the boat to run proper when the trim is up a bit to the little spray setting. This is likely when the motor is not tucked under.
The left handed motor while not a real problem sound like they put on what they had or could get, If you ever want to sell motor it will impact you then. If the ducer looses bottom, you will wonder if it could be better. I know some zuks can switch rotation, in which case it could be fixed via prop if your is one of those.

You should drive over to the dealer, get a proper pic so we can see the real height.

Lastly you are after a result, the deal does not like your idea, no problem. Look them in the eye and say make it preform like it should. When they say it is right, smile say great, lets take her out and show me how well you did. (want some fun, put the dealer in the front of the boat.)

The dealer will either like your idea, change something cause they are smart, or trim it different from you and teach you how to run your new boat, and even possible just tell you that is they way it is... I sold you a shity boat.

I like other am suspicious that they have the right hole setting but the wrong lower. Simple cause of the supply demand issues and the left turning setup.

Highflier
Likes:
Old 06-02-2021, 11:44 AM
  #50  
Junior Member
 
Join Date: Feb 2021
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default

1st. Shame on your dealer. He sounds like a chump salesman. Get the service manager, head rigger, owner and boat buyer involved. That's their responsibility. PERIOD!!! 2nd, I'm not liking your photos. They show squat, and are confusing everyone here making comments. How about a full side profile? Motor doesn't appear to be too low. In fact, looks not too far off from my view. 3) what I don't like is that pathetic aluminum prop. You should be running stainless . Maybe a stern lifting... or....???Where us the spray coming from. The motor? The transom? Off of the chines further fwd???
4) "it's gunna overheat if it's too high,:. Slap that b@+ch!!@ His solution to the problem is..... no solution. I would tell him to back away from me Pronto. If he ain't part of the solution. Then he's part of the problem. Get TF away!! Is this model boat, with this engine, so unusual that no-one has ever experienced thus before ? Certainly, the boat builder knows of solutions, cuz it sounds like someone's got their head up their butt. Is there a rocker on the hull verse to the last 6 feet of the transom?? I relooked at yoj photo.. motor appears to be right rotation. Standard.
again, get rid of that aluminum prop. And don't just buy any old stainless. It'll take trial and error till they find the right one for your boat.
Make them make it right. That's their job!!!!!!!! And finally. Quit being such a nice guy. Make them fix it. With a good prop . He'll, they should practically GIVD you one. But... I think you should buy the best stainless prop you can find and offer to pay their cost for it. IF, it's the one which that helps solve your performance problems.

Last edited by King PV; 06-02-2021 at 12:23 PM.
Old 06-02-2021, 11:52 AM
  #51  
Senior Member
 
Join Date: Jun 2011
Location: Marshfield
Posts: 1,610
Received 592 Likes on 266 Posts
Default

Originally Posted by King PV View Post
I'm not liking your photos. They show squat, and are confusing everyone here making comments. How about a full side profile? ....
I agree, those photos are useless and probably add more confusion than they are worth. A side profile photo is needed.
Old 06-02-2021, 12:07 PM
  #52  
Admirals Club Admiral's Club Member
 
Join Date: May 2006
Location: Ontario Canada
Posts: 567
Received 226 Likes on 105 Posts
Default

Originally Posted by shore View Post
pretty sure they don't make 30" df115's.
Pretty sure they do. Its in their parts list as a model. DF 115ATLSS2. LS for Long shaft.
With the shortage of motors, maybe someone decided a counter rotating LS might be acceptable for some reason? I am no expert but that looks like a 30" shaft to me. Check the model number and if it includes the LS number, its a 30".
That would also explain why the dealer set up recommended (2 holes?) didn't work properly.
Old 06-02-2021, 12:29 PM
  #53  
Junior Member
 
Join Date: Feb 2021
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default

Tho, I am not 100% sure, I highly doubt Suzy makes a 30" 115. And... if they did, that would be listed as a extra, extra long . Long shaft would be 20" and a extra long shaft. or a 25" .
again, better pics....more than 1......is needed.
Old 06-02-2021, 12:35 PM
  #54  
Admirals Club Admiral's Club Member
 
Join Date: Apr 2008
Location: Annapolis, MD
Posts: 1,159
Received 474 Likes on 231 Posts
Default

Originally Posted by jfbetz View Post
That Engine/Lower looks awfully long for that transom. Notwithstanding the angle of the photo, that AV plate appears well below the bottom to the centerline of the hull.
That appears to be a 30" lower. Take a look at the stock image for a 25" Suzuki outboard; note the area where the arrow is pointed.





Now look at an image of the OP's engine, and that same area on the engine. There are several more inches of lower unit in this area. And the OPs engine has 2 fins above the AV plate. Stock photo only has one.




Last edited by jfbetz; 06-02-2021 at 12:57 PM.
Old 06-02-2021, 12:35 PM
  #55  
Member
 
Join Date: Jun 2016
Posts: 80
Received 128 Likes on 21 Posts
Default

Originally Posted by King PV View Post
1st. Shame on your dealer. He sounds like a chump salesman. Get the service manager, head rigger, owner and boat buyer involved. That's their responsibility. PERIOD!!! 2nd, I'm not liking your photos. They show squat, and are confusing everyone here making comments. How about a full side profile? Motor doesn't appear to be too low. In fact, looks not too far off from my view. 3) what I don't like is that pathetic aluminum prop. You should be running stainless . Maybe a stern lifting... or....???Where us the spray coming from. The motor? The transom? Off of the chines further fwd???
4) "it's gunna overheat if it's too high,:. Slap that b@+ch!!@ His solution to the problem is..... no solution. I would tell him to back away from me Pronto. If he ain't part of the solution. Then he's part of the problem. Get TF away!! Is this model boat, with this engine, so unusual that no-one has ever experienced thus before ? Certainly, the boat builder knows of solutions, cuz it sounds like someone's got their head up their butt. Is there a rocker on the hull verse to the last 6 feet of the transom?? I relooked at yoj photo.. motor appears to be right rotation. Standard.
again, get rid of that aluminum prop. And don't just buy any old stainless. It'll take trial and error till they find the right one for your boat.
Make them make it right. That's their job!!!!!!!! And finally. Quit being such a nice guy. Make them fix it. With a good prop . He'll, they should practically GIVD you one. But... I think you should buy the best stainless prop you can find and offer to pay their cost for it. IF, it's the one which that helps solve your performance problems.
Pretty sure that's a stainless prop in the photo.
Likes:
Old 06-02-2021, 12:35 PM
  #56  
Admirals Club Admiral's Club Member
 
Join Date: Feb 2011
Posts: 8,395
Received 1,376 Likes on 764 Posts
Default



No 30".
Old 06-02-2021, 12:46 PM
  #57  
Senior Member
 
Join Date: Feb 2012
Location: Treasure Coast FL
Posts: 1,025
Received 129 Likes on 99 Posts
Default

OP's 115 looks exactly like my 25" 140. Same offset to the lower motor mount on the midsection, and I have two fins above the anti-cav plate. That stock image above is of a 20" motor.
Old 06-02-2021, 12:52 PM
  #58  
Senior Member
THT sponsor
 
Join Date: Aug 2011
Location: Beaufort NC
Posts: 6,657
Received 3,406 Likes on 1,533 Posts
Default

Originally Posted by Matt Gent View Post
OP's 115 looks exactly like my 25" 140. Same offset to the lower motor mount on the midsection, and I have two fins above the anti-cav plate. That stock image above is of a 20" motor.
Yes, this is my 25" DF140, taken from two angles, the first close to the OP's, the second straight on showing the cavitation plate just above the bottom. His recessed "tunnel" makes it look even worse. Still don't know what's up with his transducer?




Old 06-02-2021, 01:08 PM
  #59  
Admirals Club Admiral's Club Member
 
Join Date: Sep 2010
Posts: 563
Received 9 Likes on 9 Posts
Default

Your dealer also does not know what cavitation is. Here is a link that explains it.
https://uk.boats.com/how-to/propelle...r-ventilation/
Likes:
Old 06-02-2021, 02:56 PM
  #60  
Junior Member
 
Join Date: Feb 2021
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default

Man, am I confused. Are a these pics of the same hull/setup?? I see white painted prop. Right handed rotation while everyone is talking about left. Mounted too low/ mounted too high ???? while it looks to me to be pretty good....
deep vee and flat-bottom... wtf.... and that transducer....if anything was gunna put up a roostertsil.....
or is it just me??

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.