I installed the yanmar 73 hp. I was considering the 54 as it did not have a
turbo and there is a generator pack offered for this motor by yanmar. You only
need 28 hp to cruise at 6.5 knots. The generator pack is only offered in Europe,
not the USA, where I am located. It is pretty slick, as it slides in between the
flywheel of the engine and the transmission. It only adds about 3" or so to the
length of the motor assembly. It is can put out up to 5 or 6 kw. I had the 4-154
with a Hurth mechanical trans. The installation was easy. I used the same trans
and adapter plate from the 4-154, and since the rear motor mounts are on the
trans and adapter, it simplified alignment issues. I can send you pictures
directly to your email if you want that shows the installation, motor mounts,
exhaust etc. You can pull the old motor straight out by just removing the engine
hatch, and install the new one the same. The work is really in cleaning up the
engine room itself. I went with the 73 hp as I could not get the gen pack, and
figured extra power could not hurt, especially since I installed a 320 amp
alternator. Love the motor, it is smaller in size, with an increase of
efficiency of about 18 to 20%. I did the entire install myself.

Eric Maramu 105




________________________________
From: jochenh1109 <jochen@...>
To: amelyachtowners@...
Sent: Thu, November 18, 2010 11:07:10 AM
Subject: [Amel] Maramu repower

 
Hello dear forum members,

Our Blue Song finally needs a new Diesel, and we'll have to have it installed
down here in Grenada.

Who of the fellow Maramu owners have gone through that exercise, what new engine
did you install (or have installed) and why did you choose that specific motor,
how painful was the exercise, how happy are you with your new engine ?

We are presently considering a Cummins (but that is a 3.3 ltr, 65 HP engine -
fuel consumption....) or a 52 HP Yanmar (is that enough HP, it is a bit less
than our old Perkins 4154).

ANY useful comment/suggestion/hint will be appreciated, there is so much you can
do wrong as I have read in various cruisers forums

Thanks in advance and fair winds

Jochen
s/v Blue Song
Maramu #143

hi eric
i have on my boat still the perkins 4-154. i have just bought the yacht. the engine should have about 7000 hr. it looks that it works perfect. would you recommend to change the engine? can you send me also the pictures?

thanks
lior
sababa, maramu #155

נשלח מה-iPhone שלי

ב-18 בנוב 2010, בשעה 21:17, Eric Lindholm <etlindholm@...> כתב/ה:

I installed the yanmar 73 hp. I was considering the 54 as it did not have a
turbo and there is a generator pack offered for this motor by yanmar. You only
need 28 hp to cruise at 6.5 knots. The generator pack is only offered in Europe,
not the USA, where I am located. It is pretty slick, as it slides in between the
flywheel of the engine and the transmission. It only adds about 3" or so to the
length of the motor assembly. It is can put out up to 5 or 6 kw. I had the 4-154
with a Hurth mechanical trans. The installation was easy. I used the same trans
and adapter plate from the 4-154, and since the rear motor mounts are on the
trans and adapter, it simplified alignment issues. I can send you pictures
directly to your email if you want that shows the installation, motor mounts,
exhaust etc. You can pull the old motor straight out by just removing the engine
hatch, and install the new one the same. The work is really in cleaning up the
engine room itself. I went with the 73 hp as I could not get the gen pack, and
figured extra power could not hurt, especially since I installed a 320 amp
alternator. Love the motor, it is smaller in size, with an increase of
efficiency of about 18 to 20%. I did the entire install myself.

Eric Maramu 105

________________________________
From: jochenh1109 <jochen@...>
To: amelyachtowners@...
Sent: Thu, November 18, 2010 11:07:10 AM
Subject: [Amel] Maramu repower


Hello dear forum members,

Our Blue Song finally needs a new Diesel, and we'll have to have it installed
down here in Grenada.

Who of the fellow Maramu owners have gone through that exercise, what new engine
did you install (or have installed) and why did you choose that specific motor,
how painful was the exercise, how happy are you with your new engine ?

We are presently considering a Cummins (but that is a 3.3 ltr, 65 HP engine -
fuel consumption....) or a 52 HP Yanmar (is that enough HP, it is a bit less
than our old Perkins 4154).

ANY useful comment/suggestion/hint will be appreciated, there is so much you can
do wrong as I have read in various cruisers forums

Thanks in advance and fair winds

Jochen
s/v Blue Song
Maramu #143

[Non-text portions of this message have been removed]

Hello Lior,
I am far from being a Maramu specialist, but I just want to point out what I read in this article:
http://www.jordanyachts.com/archives/2948
 
The standard 63HP Perkins 4-154 is a venerable engine which is still in many. When property maintained, the 4-154 will last virtually forever and 10,000 hours should not necessarily rule one out. The real problem is that replacement parts are getting harder to find.

So it looks to me you should keep your engine for another 2 or 3 more thousand hours...
Sincerely, Alexandre 713-412-6704

My engine only had 5,200 hours on it when I replaced it. My engine was leaking
some oil out of the rear main seal, which ends up in the bilge of course. The
harbors are really coming down on anyone spilling anything in the water,  so
that was a problem. It still had good power however. I looked into just
replacing the rear main seal, and learned that in order to do so you have to
remove the crankshaft from the motor, not cheap. In addition, when the seal
starts to leak, it is usually because the main bearings are getting worn and
sloppy, so that leads to a complete rebuild. I replaced the motor rather than
rebuilding it for several reasons. A rebuild was $5,000 and a new motor $11,000.
The later added value to the boat. Newer technology gave better economy by about
18 to 20%, so it extended the range by the same amount. I absolutely hated the
raw water pump on the Perkins, it accounted for 90% of my repairs. The yanmar is
geardriven and much more robust. Replacement parts for the Perkins are getting
very expensive. As long as you are not leaking oil and don't have to replace any
major parts I would stay with it for a while. I will forward to you an email
that I sent another member that includes some pictures.

Eric Maramu 105



________________________________
From: Lior <lior246@...>
To: "amelyachtowners@..." <amelyachtowners@...>
Sent: Thu, November 18, 2010 12:31:23 PM
Subject: Re: [Amel] Maramu repower

 
hi eric
i have on my boat still the perkins 4-154. i have just bought the yacht. the
engine should have about 7000 hr. it looks that it works perfect. would you
recommend to change the engine? can you send me also the pictures?

thanks
lior
sababa, maramu #155

נשלח מה-iPhone שלי

ב-18 בנוב 2010, בשעה 21:17, Eric Lindholm <etlindholm@...> כתב/ה:

I installed the yanmar 73 hp. I was considering the 54 as it did not have a
turbo and there is a generator pack offered for this motor by yanmar. You only

need 28 hp to cruise at 6.5 knots. The generator pack is only offered in
Europe,

not the USA, where I am located. It is pretty slick, as it slides in between
the

flywheel of the engine and the transmission. It only adds about 3" or so to the

length of the motor assembly. It is can put out up to 5 or 6 kw. I had the
4-154

with a Hurth mechanical trans. The installation was easy. I used the same trans

and adapter plate from the 4-154, and since the rear motor mounts are on the
trans and adapter, it simplified alignment issues. I can send you pictures
directly to your email if you want that shows the installation, motor mounts,
exhaust etc. You can pull the old motor straight out by just removing the
engine

hatch, and install the new one the same. The work is really in cleaning up the

engine room itself. I went with the 73 hp as I could not get the gen pack, and

figured extra power could not hurt, especially since I installed a 320 amp
alternator. Love the motor, it is smaller in size, with an increase of
efficiency of about 18 to 20%. I did the entire install myself.

Eric Maramu 105

________________________________
From: jochenh1109 <jochen@...>
To: amelyachtowners@...
Sent: Thu, November 18, 2010 11:07:10 AM
Subject: [Amel] Maramu repower


Hello dear forum members,

Our Blue Song finally needs a new Diesel, and we'll have to have it installed
down here in Grenada.

Who of the fellow Maramu owners have gone through that exercise, what new
engine

did you install (or have installed) and why did you choose that specific motor,

how painful was the exercise, how happy are you with your new engine ?

We are presently considering a Cummins (but that is a 3.3 ltr, 65 HP engine -
fuel consumption....) or a 52 HP Yanmar (is that enough HP, it is a bit less
than our old Perkins 4154).

ANY useful comment/suggestion/hint will be appreciated, there is so much you
can

do wrong as I have read in various cruisers forums

Thanks in advance and fair winds

Jochen
s/v Blue Song
Maramu #143

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]

Eric

I would be really interested in some pictures of your engine replacement. It is
something we are giving serious consideration to and I would find them very
ueseful

Regards

John And Deb
Orion1 Maramu #41





________________________________
From: Eric Lindholm <etlindholm@...>
To: amelyachtowners@...
Sent: Fri, 19 November, 2010 19:42:34
Subject: Re: [Amel] Maramu repower


My engine only had 5,200 hours on it when I replaced it. My engine was leaking
some oil out of the rear main seal, which ends up in the bilge of course. The
harbors are really coming down on anyone spilling anything in the water, so
that was a problem. It still had good power however. I looked into just
replacing the rear main seal, and learned that in order to do so you have to
remove the crankshaft from the motor, not cheap. In addition, when the seal
starts to leak, it is usually because the main bearings are getting worn and
sloppy, so that leads to a complete rebuild. I replaced the motor rather than
rebuilding it for several reasons. A rebuild was $5,000 and a new motor $11,000.

The later added value to the boat. Newer technology gave better economy by about

18 to 20%, so it extended the range by the same amount. I absolutely hated the
raw water pump on the Perkins, it accounted for 90% of my repairs. The yanmar is

geardriven and much more robust. Replacement parts for the Perkins are getting
very expensive. As long as you are not leaking oil and don't have to replace any

major parts I would stay with it for a while. I will forward to you an email
that I sent another member that includes some pictures.

Eric Maramu 105

________________________________
From: Lior <lior246@...>
To: "amelyachtowners@..." <amelyachtowners@...>
Sent: Thu, November 18, 2010 12:31:23 PM
Subject: Re: [Amel] Maramu repower


hi eric
i have on my boat still the perkins 4-154. i have just bought the yacht. the
engine should have about 7000 hr. it looks that it works perfect. would you
recommend to change the engine? can you send me also the pictures?

thanks
lior
sababa, maramu #155

נשלח מה-iPhone שלי

ב-18 בנוב 2010, בשעה 21:17, Eric Lindholm <etlindholm@...> כתב/ה:

I installed the yanmar 73 hp. I was considering the 54 as it did not have a
turbo and there is a generator pack offered for this motor by yanmar. You only

need 28 hp to cruise at 6.5 knots. The generator pack is only offered in
Europe,

not the USA, where I am located. It is pretty slick, as it slides in between
the

flywheel of the engine and the transmission. It only adds about 3" or so to the


length of the motor assembly. It is can put out up to 5 or 6 kw. I had the
4-154

with a Hurth mechanical trans. The installation was easy. I used the same trans


and adapter plate from the 4-154, and since the rear motor mounts are on the
trans and adapter, it simplified alignment issues. I can send you pictures
directly to your email if you want that shows the installation, motor mounts,
exhaust etc. You can pull the old motor straight out by just removing the
engine

hatch, and install the new one the same. The work is really in cleaning up the

engine room itself. I went with the 73 hp as I could not get the gen pack, and

figured extra power could not hurt, especially since I installed a 320 amp
alternator. Love the motor, it is smaller in size, with an increase of
efficiency of about 18 to 20%. I did the entire install myself.

Eric Maramu 105

________________________________
From: jochenh1109 <jochen@...>
To: amelyachtowners@...
Sent: Thu, November 18, 2010 11:07:10 AM
Subject: [Amel] Maramu repower


Hello dear forum members,

Our Blue Song finally needs a new Diesel, and we'll have to have it installed
down here in Grenada.

Who of the fellow Maramu owners have gone through that exercise, what new
engine

did you install (or have installed) and why did you choose that specific motor,


how painful was the exercise, how happy are you with your new engine ?

We are presently considering a Cummins (but that is a 3.3 ltr, 65 HP engine -
fuel consumption....) or a 52 HP Yanmar (is that enough HP, it is a bit less
than our old Perkins 4154).

ANY useful comment/suggestion/hint will be appreciated, there is so much you
can

do wrong as I have read in various cruisers forums

Thanks in advance and fair winds

Jochen
s/v Blue Song
Maramu #143

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]

Hi John and Deb, this is Howard from s/v Jazz, Maramu #144.

We just finished a 3 1/2 year refit (restoration, really) of our Maramu which included repowering with a 75HP Yanmar 4JH4-TE. If you go to the Photos section, look for the album sv JAZZ which documents the entire process. There are several photos of the engine installation. You might also consider replacing the stuffing box with a dripless unit (we used a Tides Marine) and a large alternator (ours is a Bomar 210 amp that mounts directly to the engine with a kit made expressly for the Yanmar by a company called Altmount). Because the Yanmar puts out 13 more horsepower than the original Perkins we also went up an inch in size on our Maxprop.

Regards,
Howard Berger
s/v Jazz Maramu 144

Alex, I don't have any pictures of the engine room bare, but it sounds like
Howard does. John and Deb I will forward to your email directly an email to
another member with the photos. The Yanmar is a popular and excellent choice for
replacement. I added a 320 amp Leece Neville alternator on the stock bracket
sold by Yanmar and it works great. I don't have a generator, and I can run my AC
through my inverter when underway.

Eric maramu 105



________________________________
From: woods deborah <woodsdeborah_56@...>
To: amelyachtowners@...
Sent: Sun, November 21, 2010 6:21:28 AM
Subject: Re: [Amel] Maramu repower

 
Eric

I would be really interested in some pictures of your engine replacement. It is
something we are giving serious consideration to and I would find them very
ueseful

Regards

John And Deb
Orion1 Maramu #41

________________________________
From: Eric Lindholm <etlindholm@...>
To: amelyachtowners@...
Sent: Fri, 19 November, 2010 19:42:34
Subject: Re: [Amel] Maramu repower

My engine only had 5,200 hours on it when I replaced it. My engine was leaking
some oil out of the rear main seal, which ends up in the bilge of course. The
harbors are really coming down on anyone spilling anything in the water, so
that was a problem. It still had good power however. I looked into just
replacing the rear main seal, and learned that in order to do so you have to
remove the crankshaft from the motor, not cheap. In addition, when the seal
starts to leak, it is usually because the main bearings are getting worn and
sloppy, so that leads to a complete rebuild. I replaced the motor rather than
rebuilding it for several reasons. A rebuild was $5,000 and a new motor $11,000.


The later added value to the boat. Newer technology gave better economy by about


18 to 20%, so it extended the range by the same amount. I absolutely hated the
raw water pump on the Perkins, it accounted for 90% of my repairs. The yanmar is


geardriven and much more robust. Replacement parts for the Perkins are getting
very expensive. As long as you are not leaking oil and don't have to replace any


major parts I would stay with it for a while. I will forward to you an email
that I sent another member that includes some pictures.

Eric Maramu 105

________________________________
From: Lior <lior246@...>
To: "amelyachtowners@..." <amelyachtowners@...>
Sent: Thu, November 18, 2010 12:31:23 PM
Subject: Re: [Amel] Maramu repower

hi eric
i have on my boat still the perkins 4-154. i have just bought the yacht. the
engine should have about 7000 hr. it looks that it works perfect. would you
recommend to change the engine? can you send me also the pictures?

thanks
lior
sababa, maramu #155

נשלח מה-iPhone שלי

ב-18 בנוב 2010, בשעה 21:17, Eric Lindholm <etlindholm@...> כתב/ה:

I installed the yanmar 73 hp. I was considering the 54 as it did not have a
turbo and there is a generator pack offered for this motor by yanmar. You only

need 28 hp to cruise at 6.5 knots. The generator pack is only offered in
Europe,

not the USA, where I am located. It is pretty slick, as it slides in between
the

flywheel of the engine and the transmission. It only adds about 3" or so to the



length of the motor assembly. It is can put out up to 5 or 6 kw. I had the
4-154

with a Hurth mechanical trans. The installation was easy. I used the same trans



and adapter plate from the 4-154, and since the rear motor mounts are on the
trans and adapter, it simplified alignment issues. I can send you pictures
directly to your email if you want that shows the installation, motor mounts,
exhaust etc. You can pull the old motor straight out by just removing the
engine

hatch, and install the new one the same. The work is really in cleaning up the

engine room itself. I went with the 73 hp as I could not get the gen pack, and

figured extra power could not hurt, especially since I installed a 320 amp
alternator. Love the motor, it is smaller in size, with an increase of
efficiency of about 18 to 20%. I did the entire install myself.

Eric Maramu 105

________________________________
From: jochenh1109 <jochen@...>
To: amelyachtowners@...
Sent: Thu, November 18, 2010 11:07:10 AM
Subject: [Amel] Maramu repower


Hello dear forum members,

Our Blue Song finally needs a new Diesel, and we'll have to have it installed
down here in Grenada.

Who of the fellow Maramu owners have gone through that exercise, what new
engine

did you install (or have installed) and why did you choose that specific motor,



how painful was the exercise, how happy are you with your new engine ?

We are presently considering a Cummins (but that is a 3.3 ltr, 65 HP engine -
fuel consumption....) or a 52 HP Yanmar (is that enough HP, it is a bit less
than our old Perkins 4154).

ANY useful comment/suggestion/hint will be appreciated, there is so much you
can

do wrong as I have read in various cruisers forums

Thanks in advance and fair winds

Jochen
s/v Blue Song
Maramu #143

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]



[Non-text portions of this message have been removed]




[Non-text portions of this message have been removed]

Hi Howard

Many thanks for the information we are looking into the Yanmar and the pics were
really helpful. You have installed your solar panels on port and starboard rails
at the stern we are planning to do the same with two Kyocera 135 watt panels.
Foe interest which way did you run the cables? Did you go through the deck as
close to the toe rail as possible and install cable glands?

Regards

Deb and John
Orion1




________________________________
From: svresolute <svresolute@...>
To: amelyachtowners@...
Sent: Sun, 21 November, 2010 16:14:17
Subject: Re: [Amel] Maramu repower


Hi John and Deb, this is Howard from s/v Jazz, Maramu #144.

We just finished a 3 1/2 year refit (restoration, really) of our Maramu which
included repowering with a 75HP Yanmar 4JH4-TE. If you go to the Photos
section, look for the album sv JAZZ which documents the entire process. There
are several photos of the engine installation. You might also consider
replacing the stuffing box with a dripless unit (we used a Tides Marine) and a
large alternator (ours is a Bomar 210 amp that mounts directly to the engine
with a kit made expressly for the Yanmar by a company called Altmount). Because
the Yanmar puts out 13 more horsepower than the original Perkins we also went up
an inch in size on our Maxprop.

Regards,
Howard Berger
s/v Jazz Maramu 144







[Non-text portions of this message have been removed]

Hi Deb and John,

The problem with the port and starboard rail solar install is that one is almost always in shade due to the mizzen boom. We are adding a set of davits and will put a third panel on top of the crosspiece between the davits. If you have davits or plan to have davits I'd suggest getting one or two panels up there as the rail mounted ones have proven inefficient.

We spent last season on the hook and I was keeping a pretty close eye on the solar controller.

Cheers,

Dave Benjamin
Maramu #29

It's a pretty narrow transom and we feel our options are slightly limited. We've got some Katos that I picked up secondhand. I saw the same brand installed on another Maramu and they seemed to work okay. I would not use the davits underway except in protected waters since there's not much height off the water.

Cheers,

Dave Benjamin
S/V Exit Strategy
Maramu #29