Engine Replacement on 1983 H27

[teaky2]

Can someone tell me what to expect when I swap my 1GM with a 2YM15 on my 1983 H27.
Will I need to move the mounts?
Will the steps clear?
This will be done while she floats at the dock.
All work will be done by myself.

Thanks

 

[Chuck Creel]

Can someone tell me what to expect when I swap my 1GM with a 2YM15 on my 1983 H27.
Will I need to move the mounts?
Will the steps clear?
This will be done while she floats at the dock.
All work will be done by myself.

Thanks

there is a little more to it than you seem to expect.
1. shaft lenght / aligment.

2. exhaust routing

3. posiibly changing the prop.

when i had my h-30 with ysm-12 " one cylinder "

the 2ym15 would not fit and still use the stairs. so the stairs would need modification.

best of luck.

 

[Ed Schenck]

My 3YM30 is a very small and light engine so the 2YM20 should be a good fit. The major difference is the YM is narrow so the mounts do not match the Cherubini's wide bed rails. If you use "Search" for 'engine' and model 'h27_75-84' you will find lots written about your question. Some have glassed rails to the inside of the existing ones. I chose to weld on extenstions(pictures) to span the width. You can see my 3YM30 installation at: http://hunter.sailboatowners.com/in...&Itemid=267&cat_id=38&page=model&mn=37-cutter . There are four topics at the bottom starting with "Yanmar".

 

[saltydawg]

teaky what are you doing with your 1 gm motor? the reason i ask is i need a 1gm head mine is bad, my bottom end is good just the head is bad. would be you willing to sell,gift, donate the 1gm head to another hunter 27 owner?

 

[amcmahon]

Hey Teaky2, I have a 1984 h27 and replaced original Westerbeke ten2 with a Yanmar 2YM15 about 4 years ago. Did mine because trans on Westerbeke was dead and the economics of spending $1500 on 24 year old engine (that was also abused) did not make sense. Several points to make:
1. New engine fits but had to fabricate one new stringer since engine mnts are further appart on port side.
2. Take great care in locating new stringer, had to move mine to accomplish alignment.
3. I also replaced prop shaft hose while engine was out. I did not do anything with propshaft or flax packing - wish I had had shaft trued and replaced bearing since need to now.
4. Job of replacing is acually really easy. I did mine while boat was in water - still easy.
5. New enging is very powerful for a 27. I cruise at 6+mph at 2800 rpm and consistantly get 15+ mpg. I usually keep up with larger boats without pushing.

In 4 years, I already have 1700 hours on new engine - it has been perfectly reliable.

Tony

 

[teaky2]

Thank you for your input,it looks like a normal project for me,just jump in feet first and fig it out.

 

[Paul F]

Another Look

I am in the process of re-powering my 1980 33. Seriously looking at an electric engine from Electric Yacht. I looked at an installation in a Person 32 today. It is very clean. I am still in the middle of the decision, but I am leaning this way. It may be a consideration for you too.

http://www.electricyacht.com/

 

[Steve Dion]

I guess I am missing something here. I cannot see any practical reason to power a sailboat with an electric motor. $1500 - $2500 every 2-3 years for batteries, the lack of range etc. We probably spend $100/yr on fuel and another $50 on engine maintenance.

Would one want to do this to be green? Do you just want something different?

I do not know, so please help me out.

 

[kloudie1]

some thumbnail calculations:
The web site is a little misleading .. for instance he states that solar and wind can provide “…all or most of energy needs.”. Using his example of a boat your size, the specified motor is equivalent to a smidgen over 9 horsepower. So first consider if you are willing to have half the horsepower you have today. (if I remember correctly, your boat has a 2QM20 ) .. Next consider that with the numbers he provides, you can motor about two-and-a-half hours (at hull speed) if you have a 400 AH battery bank, a bit over 12 miles.. Now about that wind generator.. Tests have shown that they can provide roughly 10-12 amperes in normal wind conditions.. so to replace the 2 hours of motoring (200 AH), you will have to sit still in a stiff breeze for over 20 hours.. and that doesn’t count any lights or radio or fridge.. Solar is a lot worse, because it only makes power during the day. If you use the boat in a way that accommodates that kind of dead time, then you are a match.. Shore power helps but you get limited by “acceptance” .. how much charge the battery can absorb quickly.. Ya still talking 5-6 hours with a heavy powerful (expensive) computer controlled charger.. Battery cooling becomes necessary in a re-charge like that.. I don’t use my boat in such a way that accommodates battery power, but if you do, then it is a neat, quiet, clean way to provide propulsion.

 

[Bill Roosa]

Saw their demo at the annapolis boat show

They talk a good talk, with the new battery technology (coming soon to a WM near you), and regeneration capability you can get a 10 HP motor that will provide a turning prop, not 10 HP though, for 4 whole hours unless you actually want to go somewhat above 2 knots in which case the time would be "reduced" but that is OK because you can easily recharge your batteries (overnight) when you get back (under sail).
I asked some leading questions and was singularly unimpressed. They did not have an answer for the "what do you do when the batteries die?" question or the how long do the batteries last? Seems they discharge to 10% to get their performance figures. Course with the new wet cell battery technology that is coming out of the auto industry......48 volt+ systems that are not entirely compatible with the standard 12 volt system found on most boats so you might still need your house batteries and Oh yea don't count on recharging your bats while anchored out. You can recharge them while sailing but you might notice a drop in performance as the fat 3 blade prop is very efficient at extracting energy out of the moving stream of water.......It just went on and on.

It could be a viable option for a day sailor some day after they develope a better battery technology. I don't see this being an option for a crusier until they get fuel cells to run on diesel.

 

[Steve Dion]

A friend of ours chartered an electric Cat in Caribbean and was totally unimpressed. These boats have a kicker on them to recharge the batteries. You start adding up the costs compared to having a traditional diesel and the cost over 30 years (probably average life of a half way maintained diesel) is going to be many times the cost for something that is inferior.

Call me when they get hydrogen fuel cells perfected!

 

[Ed Schenck]

This could work for Paul technically if not financially. I sailed with Paul once many years ago. It is probably thirty minutes to open water. So if he only used power for that one hour for an occasional daysail then maybe. But the costs will never work with current battery technology. The idea of quiet power and a clean engine bay is appealing for sure. So far as "green" is concerned the battery manufacturing probably used more than two years of his petroleum needs.

 

[Steve Dion]

Ed:

I think when "we" start recycling these batteries from the electric cars, boats etc. We will wish we had built more coal power plants, because it will probably be much cleaner than the battery disposal business.

Only time will tell.