Reply
 
Thread Tools Display Modes
 
Old 12-29-2015, 12:03 PM   #1
Newbie
 
City: Bahamas
Country: Bahamas
Join Date: Oct 2015
Posts: 4
Inboard Engine Recommendations?

Hey all, for a while now I've been thinking of building Ken Hankinson's "Sweet 16" minitug (see picture below) but I don't have very much experience with inboards and I was wondering if anyone had advice as to what a good inboard would be in the range of 20-30 hp. Thanks!
Attached Thumbnails
Click image for larger version

Name:	Sweet 16.png
Views:	120
Size:	142.7 KB
ID:	47717  
__________________
Advertisement

FX2162002 is offline   Reply With Quote
Old 12-29-2015, 12:17 PM   #2
Senior Member
 
yachtbrokerguy's Avatar


 
City: Fort Lauderdale, FL
Country: USA
Vessel Model: I have keys to lots of boats...
Join Date: Jan 2011
Posts: 469
I often suggest that you should consider who would service the engine, especially under warranty. Would the boat be near the larger boating centers such as Nassau, Freeport or Marsh Harbor? What do the engine manufacturers say about service and warranty outside of the US?
__________________

__________________
Tucker Fallon CPYB
www.yachtbrokerguy.com
yachtbrokerguy is offline   Reply With Quote
Old 12-29-2015, 02:50 PM   #3
Guru
 
djmarchand's Avatar
 
City: East Greenwich, RI
Country: USA
Vessel Name: Bella
Vessel Model: Mainship Pilot 34
Join Date: Aug 2012
Posts: 2,882
In that engine hp range, there are really only two major manufacturers: Volvo- the D1 and Yanmar- the 3YM20. 99% of the 25-32' sailboats built in the world have those engines.


But there are a couple of other options. Beta Marine has a line of nicely marinized Kubota engines. Service won't be as ubiquitous as the majors, but Kubota's are used everywhere for tractors and construction equipment. Nanni is another marinizer of someone's block, but AFAiK there is no dealer support in NA, but popular in Europe.


David
djmarchand is offline   Reply With Quote
Old 12-29-2015, 04:08 PM   #4
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 13,719
You could go w a Honda single or twin air cooled engine. Ten hp is plenty for your boat. I've seen a 26' Fisher w a single cyl 10hp Yanmar.

You didn't even specify a preference for diesel or gas. I recomend diesel mostly for safety but it will be very noisy unless you get serious w sound insulation. Vibration could be an issue w the metal boat. David is right .. a used sailboat engine would probably be best. Good compromise of many things.

If you can find one a Brennan Imp of 25hp (1950's) would be very quiet and smooth or perhaps another old gas flat head marine engine. CL is about the only place you'll find one though.

An OB would be easy and quiet. A 9.8 hp 4 stroke mounted on a bracket on the stern or in a well aft. The latter would need a fan to deal w the exhaust fumes.

Let us know what you find.
__________________
Eric

North Western Washington State USA
Nomad Willy is offline   Reply With Quote
Old 12-29-2015, 05:29 PM   #5
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 4,820
I would take a look at Phasor. They primarily offer generators with Kabota engines, but also offer propulsion. For as many generators are sold with Kabota motors, it would be my first choice as engine parts should be easily attainable.

Phasor Marine Propulsion

Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
O C Diver is offline   Reply With Quote
Old 12-29-2015, 05:37 PM   #6
Veteran Member
 
City: Toledo
Country: USA
Join Date: Dec 2015
Posts: 86
As others have said its pretty much either the volvo or the yanmar - I would shy away from an air cooled engine as its going to be loud and also short lived in the kind of continuous duty application you are thinking about. Kubota diesels aren't as common in this application but they are super easy to work on as they are designed for farm tractors and end user maintenance - how that translates to your particular ER though would be a good consideration for the people doing the marinization.
devorenm is offline   Reply With Quote
Old 12-29-2015, 05:39 PM   #7
Guru
 
djmarchand's Avatar
 
City: East Greenwich, RI
Country: USA
Vessel Name: Bella
Vessel Model: Mainship Pilot 34
Join Date: Aug 2012
Posts: 2,882
How did I forget Westerbeke in my post above. While big in marine diesel generator's, Westerbeke's position in small propulsion engines has diminished. But they still are a significant player.


You need to research the EPA regs for a new build. It used to be that marine diesels under 50 hp were exempt from the Tier 1,2,3,X regs, but now I don't know. I realize that the Bahamas may not care much, but you probably will need to source your engine in the US and they won't carry an engine if it doesn't meet EPA specs.


Maybe a better way is to look for a used sailboat engine. Bayshore Marine, Mac Boring and others rebuild Yanmars to near new specs. You could get a rebuilt one shipped to the Bahamas, but check for customs restrictions.


David
djmarchand is offline   Reply With Quote
Old 12-29-2015, 05:41 PM   #8
Guru
 
TDunn's Avatar
 
City: Maine Coast
Country: USA
Vessel Name: Tortuga
Vessel Model: Nunes Brothers Raised Deck Cruiser
Join Date: Feb 2015
Posts: 672
As others have said the options are Volvo-Penta, Yanmar and the various companies that marinize Kubota engines (Beta, Nanni, Phasor). Other options include Vetus and Westerbeke (marinized Mitsubishi engines).

Volvo and Yanmar are big international brands. Beta is out of the UK with north american distributors. Nanni is a french company with a small US distribution network. Vetus is dutch and Westerbeke is out of Massachusetts in the US.

I would look at what distributors there are in the Bahamas.

All of the above offer engines in the 15-30 hp power range.
TDunn is offline   Reply With Quote
Old 12-29-2015, 05:43 PM   #9
Veteran Member
 
City: Toledo
Country: USA
Join Date: Dec 2015
Posts: 86
Quote:
Originally Posted by djmarchand View Post
How did I forget Westerbeke in my post above. While big in marine diesel generator's, Westerbeke's position in small propulsion engines had diminished. But they still are a significant player.


You need to research the EPA regs for a new build. It used to be that marine diesels under 50 hp were exempt from the Tier 1,2,3,X regs, but now I don't know. I realize that the Bahamas may not care much, but you probably will need to source your engine in the US and they won't carry an engine if it doesn't meet EPA specs.


Maybe a better way is to look for a used sailboat engine. Bayshore Marine, Mac Boring and others rebuild Yanmars to near new specs. You could get a rebuilt one shipped to the Bahamas, but check for customs restrictions.


David
This is a good point - all the new Kubota engines above 25HP need to have a DPF with regen to meet tier 4 standards - I don't know how this translates to marine applications although they obviously aren't using extreme exhaust heat!
devorenm is offline   Reply With Quote
Old 12-29-2015, 05:47 PM   #10
Senior Member
 
oscar's Avatar
 
City: Bethlehem, PA
Country: United States
Vessel Name: Lady Kay V
Vessel Model: Don't know yet.....
Join Date: Oct 2015
Posts: 420
I agree with the Volvo/Yanmar. I've dealt with both, Volvo in Europe, Yanmar over here. For that reason I would lean to Yanmar. Don't under power. Those extra horses come in handy when the bliss turns to snot, if you get my drift.
__________________
Currently boatless but looking. Avatar is my first boat....Holland, 1965 ish.....
oscar is offline   Reply With Quote
Old 12-29-2015, 05:56 PM   #11
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 3,889
Get the smallest three cylinder you can get. The Kubota's marinized by Beta are nice. Quiet engine at mid range. A two cylinder is an obnoxious infernal beast. Lots of vibes and sounds sick too. Three's are much better.
Ski in NC is offline   Reply With Quote
Old 12-29-2015, 06:04 PM   #12
Guru
 
Join Date: Apr 2014
Posts: 1,291
Go with a Beta(Kubota) 10 or 14 if you don't mind the noise and vibs of the 2 cylinder or follow Skys advice and go 3 cylinders. I have the motor on my 18 ft cat boat real easy to service and its a kubota. I have had a few Kubota motors on tractors in the past and they were very good. You are going to go hull speed and maybe use 6 HP to get there. The K 14 also comes in a tuned down 10 HP version and would probably be enough but the extra 4 Hp won't cost much more or burn any more fuel at the rpm you use it and nice to have.
eyschulman is offline   Reply With Quote
Old 12-29-2015, 06:09 PM   #13
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 13,719
Quote:
Originally Posted by Ski in NC View Post
Get the smallest three cylinder you can get. The Kubota's marinized by Beta are nice. Quiet engine at mid range. A two cylinder is an obnoxious infernal beast. Lots of vibes and sounds sick too. Three's are much better.
I agree.
__________________
Eric

North Western Washington State USA
Nomad Willy is offline   Reply With Quote
Old 12-29-2015, 06:12 PM   #14
Senior Member
 
oscar's Avatar
 
City: Bethlehem, PA
Country: United States
Vessel Name: Lady Kay V
Vessel Model: Don't know yet.....
Join Date: Oct 2015
Posts: 420
Quote:
Originally Posted by Ski in NC View Post
Get the smallest three cylinder you can get. The Kubota's marinized by Beta are nice. Quiet engine at mid range. A two cylinder is an obnoxious infernal beast. Lots of vibes and sounds sick too. Three's are much better.
Hah! You want to talk vibration? Spent some formative years on Dad's boat with a 10 horse ONE banger..... I mean, my fillings were coming out......
__________________
Currently boatless but looking. Avatar is my first boat....Holland, 1965 ish.....
oscar is offline   Reply With Quote
Old 12-29-2015, 06:19 PM   #15
Guru
 
Join Date: Apr 2014
Posts: 1,291
Just looked up the Beta line up and it looks like 20 HP is smallest 3 cylinder. That would certainly run quite and smother than diesel 2 cylinders but why not a ten or fifteen HP gasser?
eyschulman is offline   Reply With Quote
Old 12-29-2015, 06:52 PM   #16
Newbie
 
City: Bahamas
Country: Bahamas
Join Date: Oct 2015
Posts: 4
Thanks to all who answered so quickly, from what I've seen during my research it sounds like one of the easiest to find would be a Honda, Kubota, or Yanmar. Also, I realize I forgot to update my profile, but I no longer live in the Bahamas, I live in Utah now, so I probably should look up the regulations beforehand. Secondly, I'm planning on building the boat in plywood, just in case that influences the decision, and thirdly, I prefer diesel engines over gas, so I'd be looking for a diesel inboard. But anyway, all these responses have been very helpful, so thank you all!
FX2162002 is offline   Reply With Quote
Old 12-29-2015, 09:51 PM   #17
Senior Member
 
oscar's Avatar
 
City: Bethlehem, PA
Country: United States
Vessel Name: Lady Kay V
Vessel Model: Don't know yet.....
Join Date: Oct 2015
Posts: 420
Quote:
Originally Posted by eyschulman View Post
Just looked up the Beta line up and it looks like 20 HP is smallest 3 cylinder. That would certainly run quite and smother than diesel 2 cylinders but why not a ten or fifteen HP gasser?
No gas on my boats..... Yes I know, gazillions of people have done it safely for centuries.

I just can't forget the few that didn't.
__________________
Currently boatless but looking. Avatar is my first boat....Holland, 1965 ish.....
oscar is offline   Reply With Quote
Old 12-30-2015, 12:53 AM   #18
Veteran Member
 
Willow-B's Avatar
 
City: Portsmouth, OH
Country: USA
Vessel Name: Willow B
Vessel Model: Prairie 29 Coastal Cruiser
Join Date: Oct 2014
Posts: 59
Quote:
Originally Posted by oscar View Post
No gas on my boats..... Yes I know, gazillions of people have done it safely for centuries.



I just can't forget the few that didn't.

My friend & mentor, who I worked with on charter fishing boats, Capt Dave Willoughby got blown 50' before he hit the water. He survived, boat burned to the waterline. He was on this boat assisting. I will never forget that blast. No gas allowed. Dingy tank remains topside.
Willow-B is offline   Reply With Quote
Old 12-30-2015, 06:19 AM   #19
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,531
My vote too, would be for A Honda or a modern yard implement V engine.like a pro series Briggs and Strattin

Gas is far more tolerant of poor fuel and does far better with light loads.

The entire engine cost (about $1,500 US ) is less than having a diesel injector pump rebuilt or a few injectors replaced.

The ease of silence aboard would be as important as the cost factor .

The lower cost of oil and filtration , and the ease of local service anywhere would also be a big plus/

If you were commercial and going to use the boat 1,000 ..2,000 a year there MIGHT be a saving in fuel that would offset the higher cost of diesel purchase and maint.and storing.
FF is offline   Reply With Quote
Old 12-30-2015, 11:21 AM   #20
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 3,889
I don't think air cooled gassers are allowed at all as inboards, and for a few good reasons.
__________________

Ski in NC is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 07:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012