Adjusting 2015 20 HP Merc on 2014 Lowe 1467 WT

[Walleye Boat Jim]

I just upgraded to a 2015 20 HP Mercury long shaft tiller with power start and trim on my 2014 Lowe 1467 WT with a 20" transom. I bought the motor used and it didn't come with any manuals. The motor came off of a similar sized boat and I probably incorrectly assumed it would work properly on my boat. I've had it in the water a couple of times and have had problems with the engine throwing water over the transom. I checked the alignment of the cavitation plate with the bottom of the boat and discovered that the plate was angled a bit down at the rear - the motor being tilted too close to the transom. I moved the tilt stops out one hole and the cavitation plate now looks level with the bottom of the boat. There are five adjustment holes for the tilt stops and mine is now in the middle hole. Since this is a common combination could someone who has this combination confirm that I now have it right? The engine also came with 9 pitch and 10 pitch props. I was running the 9 pitch prop when I did my trial runs. Any comments or recomendations on what prop to run? Thanks in advance for the help!

 

[Texasmark]

Above the antivent plate is a second plate, mounted forward of the av plate somewhat and protruding out in front of the LU and Midsection. If that plate is below the water level coming out from behind the transom when on plane, you have your smoking gun. Second, if it's that low your engine is mounted too low for best performance besides. You don't by chance have a 20" lower unit on that new engine with a 15" transom height do you???????????

 

[Walleye Boat Jim]

Thanks for your reply. Your nomenclature is pretty crytic to me. As I posted, I have a long shaft 2015 Mercury 20 HP tiller e-start/tilt motor on a 2014 Lowe 1467 WT with a 20" transom. This a pretty standard combination sold by lots of dealers - no esoteric boat/rocket science here. I am looking for a response from someone who has this identical setup to let me know if I now have things right. So here is a photo of current setup - is it right? I would really appreciate hearing from someone who has this same engine boat configuration for some direct first hand feedback. Thanks, Jim

 

[Texasmark]

I looked up the word "crytic" in my imac dictionary and it had no listing, neither do I. It did explain esoteric. I do know the meaning of the words rocket science.

Why don't you look over the transom and find the source of the water intrusion while underway and being annoyed with it. Not rocket science. Then you might flip up your depth sounder transducer and see if it quits. Your anti splash plate is in the right place to do it's job. :joyous:

 

[Faztbullet]

Motor is nowhere close to being correct, it needs to be raise at least 2-3 inches. This is you water problem as the red line need to be where yellow line is...

 

[Texasmark]

Motor is nowhere close to being correct, it needs to be raise at least 2-3 inches. This is you water problem as the red line need to be where yellow line is...

What about the turbulence the little keel generates, especially in turns? I gotta disagree with you man, yes I know your credentials, but having had several of such as pictured, I don't think he wants to go that high. The protruding plate above your yellow line is there to prevent water run up, is it not, especially when the engine is set/trimmed, in the bottom hole/trim all the way down? If not, then why is it there on all lower units?

He has a new rig and said both are 20", so why would the boat manufacturer make a 2" error in the length of the transom cutout? Looking at your list of boats, I don't see any 14 footers with fishing motors on them. I'd agree with you on one of them but not on his. I think the lower unit needs to be that deep for reliable thrust on that boat in the normal circumstances he will face while operating it.

Besides, I think his transducer is too deep and causing the problem.

 

[Faztbullet]

Nope ...that is what we call a ice runner and it parts the water ,not create turbulence and its too deep..period Read pg 5 on below Merc manual, as they say 1" below bottom. This is how I set all my customers motors from 6 to 600hp...
http://www.mdmotors.ru/netcat_files/...nstruktsiya_po _ustanovke_lodochnyh_motorov.pdf
http://media.channelblade.com/boat_g...tipstricks.pdf

 

[Texasmark]

Nope ...that is what we call a ice runner and it parts the water ,not create turbulence and its too deep..period Read pg 5 on below Merc manual, as they say 1" below bottom. This is how I set all my customers motors from 6 to 600hp...
http://www.mdmotors.ru/netcat_files/...nstruktsiya_po _ustanovke_lodochnyh_motorov.pdf
http://media.channelblade.com/boat_g...tipstricks.pdf

Ok. Not going to argue with the pro and "the book". Grin