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Re: perkins m60 replacement

Dave_Benjamin
 

Ross,

Congrats! We have a different brand muffler. It's a decent sized FRP water lift type. I'll have to check for you. I think the hose is larger than 3" but I'm not sure. Our muffler is mounted off to the port side and Eric's is mounted where the stock muffler was just over the shaft. I like where ours is situated. I'll look through my pictures or take one in the next day or two to send. Do you still use the same email address I would have from previous conversation?

I have a 19x14 in prop. I think it's a bit under-pitched. The boat has lots of power. I'm having a conversation with Kiwi-Prop about their new 4 blade props. That's a pretty intriguing product and a lot less money than a Max-Prop.

--- In amelyachtowners@..., "rossny@..." <rossny@...> wrote:




Dave and Eric, Thanks for all the info, I now have a new 75hp bolted in my Maramu and was wondering which muffler you used. Was it a Vetus? Which model? Yanmar specs 3" hose and muffler so needs replacement.
Also...what prop changes were done to take advantage of the extra HP? Eric did you get a chance to check the prop size?
Any other tips will be appreciated.
ThaNK YOU ALL,
Ross
Maramu #261 1989

--- In amelyachtowners@..., Eric Lindholm <etlindholm@> wrote:

Dave I will have to check my records next time I am at the boat and let you
know. I think it is a 19" diameter by 17" pitch, but I requested a prop with the
greatest blade area I could get. I found that when I was pushing into the
weather with the original Amel supplied prop, that my speed was going down, but
my RPM was staying the same, so it was not a power issue, but the prop slipping.
I should be by the boat this week. Eric 


________________________________
From: Dave_Benjamin <dave_benjamin@>
To: amelyachtowners@...
Sent: Mon, April 23, 2012 5:42:19 PM
Subject: [Amel] Re: perkins m60 replacement

 
Eric,

Which prop are you running?

--- In amelyachtowners@..., Eric Lindholm <etlindholm@> wrote:

Maramus require 28 hp to cruise at 6.5 knots calm seas and 59 hp to hit max
speed. The engines are the same except for the turbo basically. My yanmar dealer
who is a nationally recognized repower whiz recomended the 75 hp not just for
the extra power, but he said the turbo version would provide increased economy
and no extra maintenance if you just follow yanmars guidelines. I did all the
work myself and can give you some tips if you do the same. Using the old trans
makes the job pretty simple, almost like reinstalling the old motor. It is
pretty straightforward.

I like the extra power going against weather. I also run the most powerful
fixed prop, as it does no good to have extra power if you can't apply it.
Performance is much better all around in all areas. You will be very happy.

Eric Maramu 105

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