Awful Boat-Outboard Mismatch.-

[Sea Rider]

Scenario : It's a Four Winns Sundowner 210 Cuddy powered by a 2 stroke 150 EFI Merc OB. Searched the net for the boat's tech specs but couldn't find any as to check if needs a XL or a XXL shaft OB. As of now the OB splashes too much water out transom (pic 5) you could surf there, has a crappy water performance, too much lower leg drag which traduces is guzzling too much fuel which is economically unproductive. Has someone a clue to which shaft length is the right size for this application ?

There are only 2 more notches to rise the OB fully up, but I'm sure that will still splash gallons of water back transom. Which manual transom riser brand/model would you guys recommend for this application as to test the OB at different transom heights ? The new owner which knows nothing about boating was literally screwed by previous owner which was not content whatsoever with its real bad water performance so was a must get rid of it, what find funny is the previous owner was screwed at same time by the OB Merc dealer selling and installing a left over old Merc OB model...

Happy Boating​

 

[dingbat]

25" motor on a 20" transom

 

[Sea Rider]

25" motor on a 20" transom

Thanks Dingbat,

Some Issues :

When referring to a deadrise height, means transom height ? If so, that boat has a 20 inch deadrise. Are you sure it's a 25 shaft motor and not a 30 one ?

Checked the available lenghts for Merc's 2 strokes 150 EFI motor but could not find anything info not even in the Merc web page as all the motors stated there are 4 stroke ones.

Would be better and cheaper to go for a 5 inch motor mount instead than a motor jack ? are there motor mounts for bolt on motors or are only intended for clamp screw motors ?

Does the set-back refers to how much out transom you can mount any motor, how to determine how much set-back that 150 HP motor will need or the standard 6 inch will work fine ?​

Happy Boating

 

[racerone]

???----" deadrise " refers to the angle of the V in the hull.----Not transom height.----Just use ---google ---to learn what deadrise refers to !

 

[dingbat]

The shaft length is the vertical distance between the inside of the clamp and the ventilation plate.

Have not kept up with the latest and greatest fads but for years “freshwater” boats have used 20” shaft outboards. “Saltwater” boats ran 25” shaft outboards

A 30” shaft outboard is a fairly recent invention. High HP applications. Typically only used in trip or quad motor configurations.

 

[Lou C]

Take a look at the Four Winns website, there are older catalogs available on their site...
When the outboard is tilted down the anti cavitation plate should be at about the same height as the keel.
Talk about a bad match the trailer is even worse, that axle has to go way back for it to be balanced.
There were outboard models in both the Horizon (bowrider) and Sundowner (cuddy) models but they were older (like the age of my boat) and were probably discontinued in the mid '90s.

 

[Willyclay]

I do better with pictures. Maybe this link to Mercury's engine mounting instructions will help. Good luck!

Classic Whaler: Boston Whaler: Reference: Performance: Engine Mounting Height

Outboard motor engine mounting height guidelines

continuouswave.com

 

[Sea Rider]

Have searched their web page twice and there isn't any information regarding such an oldie 210 model. If the transom is 15.7 inches as seen in post #1, pics 2-3, needs a 20 shaft motor, right ? Will measure the motor lenght as suggested to know which size shaft is badly powering that cuddy...

Happy Boating​

 

[Sea Rider]

I do better with pictures. Maybe this link to Mercury's engine mounting instructions will help. Good luck!

Classic Whaler: Boston Whaler: Reference: Performance: Engine Mounting Height

Outboard motor engine mounting height guidelines

continuouswave.com

Thanks for the link but need to determine if dealing with an old 20-25-30 inch shaft motor when probably works fine with a L shaft one.

Happy Boating

 

[Lou C]

I looked round their old catalogs, there was a 195 Sundowner outboard, this is a 19.5" boat, I think the one in the pics is mis labeled, a 210 Sundowner would be 20'10" long which I don't think that one is. In fact I don't think there was ever a 210 Sundowner outboard model built.
What is the year of production? Last 2 digits of the HIN #.
go on to:
www.fourwinns.com
look under the owners section
drop down to the year of the boat. I didn't see any specs for the shaft length on the OB models though.

 

[Sea Rider]

Thanks Lou C,

All the info stated on their web page is for 2020 models. Have written Four Winns, asked which shaft motor lenght is recommended for that model, hope they answer soon....

Nome of their 14 boats powered with an OB states its shaft lenght under each model tech specs,...

Happy Boating​

 

[Lou C]

Thanks Lou C,

All the info stated on their web page is for 2020 models. Have written Four Winns, asked which shaft motor lenght is recommended for that model, hope they answer soon....

Nome of their 14 boats powered with an OB states its shaft lenght under each model tech specs,...

Happy Boating​

You have to hit the drop down it will show more years going way back, I even found the catalogs for my '88 H-200 in there.

 

[Faztbullet]

I highly doubt that a 4 Winns hull...looks like it has been repainted and decals added and even they are in the wrong placement

 

[Lou C]

The decals are wrong but I do think that’s a Four Winns hull; probably a 195 Sundowner

 

[Faztbullet]

Looking at pics again...pic #5 doest look like boat as in other pics . If it is.. its had decals replaced and repositioned,pinstriped,wakeboard rack added. Engine set up on a OS bracket is different than mounting to transom.; On a offshore bracket raise 1 inch for every foot of setback. So a 2 ft bracket should net the engine height measued from AV to be about 2 inches above the bottom of the boat. Of course you fine tune both configurations as needed.

 

[QBhoy]

Almost certain that was originally an inboard outdrive boat. Been converted to outboard by someone. Most of the time this doesn’t end well. It’s a real art to getting such a thing right.
And that foil fin has either been a last ditch effort to try and put an Elastoplast on it (as they usually are) and messing things up...or just messing things up altogether.

 

[racerone]

What is the distance from the BOTTOM of the hull to the top of the outboard bracket / pod ??

 

[JimS123]

Have searched their web page twice and there isn't any information regarding such an oldie 210 model. If the transom is 15.7 inches as seen in post #1, pics 2-3, needs a 20 shaft motor, right ? Will measure the motor lenght as suggested to know which size shaft is badly powering that cuddy...

Happy Boating​

Pictures are not showing all that is needed to be seen. It looks like the motor is mounted on a "bracket" of sorts, mounted / built onto the back of the hull. Thus, the 15.7" is a meaningless number, and does not really represent the "transom height".

Does the hull protrude below the bottom of the "mount"? If so, lower the motor and put a straight edge along the keel out to the AV plate. Since the motor is mounted way back from the actual transom, it can and should be mounted higher. If the AV plate is positioned even with the keel, that's what is causing the splashing.

 

[Sea Rider]

Pic Updates...
-26" as measured corresponds to which size motor ?
-The Four Winns Logo is a plastic sticker isn't known if original or a fake copy...
-Plan rising the motor the last 2 notches left and perform a water test...
-It's the same combo as seen in pic 5, previous owner removed the middle metal frame..

Happy Boating​

 

[JimS123]

My short shaft Mercs measure 17", my long shafts measure 22" and my one Extra Long shaft measures 27". That's measuring from the lowest possible mounting hole to the AV plate.

If the 26" dimension in your pic is correct, if you visually scale the picture the setback looks more like 18", not 9.5. Recheck that dimension.

Retake picture #7 with the motor down.