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| Long time Listener, First Time Caller....need some help https://www.smwebhead.com/phpBB3/viewtopic.php?f=3&t=23727 |
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| Author: | JRob_87 [ Mon Aug 09, 2021 3:21 pm ] |
| Post subject: | Long time Listener, First Time Caller....need some help |
New Member here, and thank you for the add! I recently acquired a new to me 94 Four Winns Horizon 180se. Loving the boat so far, my grandfather had a very, very similar boat back in the day that we spent soooo much time on. I've been looking for one as close to what he had for a while now. It currently has a Johnson GT150 outboard on it, that needs a tune up. It needs some other cosmetic love as just about any boat in this era needs, but nothing I haven't come across before. My question is to anyone that has a similar year boat what size shaft does your outboard have. I know for certain the boat has been repowered, as the motor is an 88. I am thinking it may have the wrong size shaft on it. Currently has a 20in, and I saw a similar boat this past weekend, not 100% if it was the same year but looked to have a longer shafted outboard on it, I've been scouring the internet trying to find any info I can, and there is not a lot out there. Any help is greatly appreciated! I will post some pics as soon as I can! TIA |
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| Author: | firecadet613 [ Tue Aug 10, 2021 7:59 am ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
As with any outboard, the top of the cavitation plate should be even or slightly below the bottom of the hull. If that is aligned you should be good to go. |
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| Author: | JRob_87 [ Tue Aug 10, 2021 8:59 am ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
Yes, that was the first thing I checked. On my boat there is a sort of step if you will below the bottom of the transom to where the drain plug is at the bottom of the hull. My cavitation plate is at the bottom of the transom, but the boat I saw it looked to be at the bottom where the drain plug was. That's why I am trying to find out what others may have on their boats. I will try and get a picture of the "step" to give a better idea of what I am talking about |
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| Author: | firecadet613 [ Tue Aug 10, 2021 9:14 am ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
The drain plug is the lowest point of the transom, so you'll most likely need to be under that point. Share some pics on here (or the facebook page) and I'll give my two cents...for what it's worth! |
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| Author: | JRob_87 [ Mon Aug 16, 2021 10:15 am ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
https://imagizer.imageshack.com/img922/708/dCexaD.jpg https://imagizer.imageshack.com/img924/9485/4MNBj6.jpg Here are some images to help describe what I was talking about. The cavitation plate is even with the bottom of the transom, but the lower unit is maybe 1/3 - 1/2 under where the drain plug is under that sort of step down from the transom to where the plug is. Sorry It took so long to get the images up, had a little health scare and ended up at the hospital |
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| Author: | kmack [ Mon Aug 16, 2021 1:23 pm ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
https://photos.app.goo.gl/565afQF4nZrg88Nq6 https://photos.app.goo.gl/sXzQXRhHVh8TAZKv5 https://photos.app.goo.gl/wttCdwjHZTfrqWeK6 Above are links to some pictures of the outboard placement on our '99 model H180. My hull is different than yours as I don't have the "step" you have. But my cavitation plate is dead-even with the drain plug. The bottom of my mounting plate for the motor is exactly 12" above the bottom of the hull. I also have a 25" shaft on my Johnson 130. This is a link to video of me flushing out the motor. You might be able to see a little more clearly how everything lines up. https://photos.app.goo.gl/33zi5aGkznx3Mni96 Hope this helps. |
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| Author: | firecadet613 [ Mon Aug 16, 2021 7:15 pm ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
Interesting! I've never seen one like that. Maybe look at some used ads and even new outboard powered boats to see what they did. |
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| Author: | JRob_87 [ Tue Aug 17, 2021 9:08 am ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
Yeah like I said, I have never come across something like that. So I reached out directly to Four Winns yesterday, and just got an email response this morning. I will update with any new info I did take it out yesterday after doing a tune up this weekend, it did run A LOT better. Did notice some cavitation at higher RPM's and speeds |
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| Author: | rpengr [ Fri Nov 05, 2021 2:40 pm ] |
| Post subject: | Re: Long time Listener, First Time Caller....need some help |
Looks like I'm about 3 months late on this thread. What did you find out? Your engine does look too high to me. However, when engines are mounted way back from the transom (the lower one with the plug). The rule of thumb is 1/2" to 1" higher for each 12" back. Here is a similar discussion with outboards mounted back on brackets: https://www.thehulltruth.com/boating-forum/245448-engine-height-bracketed-boat.html You were getting ventilation when going fast even in a straight line? Is it even worse going around fast corners? Ray P |
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