[C38] Found a good engine here- Is it too big???

Sat Jun 18 14:09:47 EDT 2011

Hi Everyone,

Just to add two cents here, I put in a Yanmar 3YM30 and I'm happy with it.
 I think it has about the same power, maybe just a touch less, than my old
Universal M-35.  I don't get the kind of speed that I've heard in this
discussion.  I see about 6 knots in flat water, no wind at full cruising
RPM, which is about 2800 RPM.  If there's wind or chop, I'm down to 5 knots
or so.  I have a three blade maxprop.  I think I need to pitch it up just a
bit as I can exceed 3200 RPM at full throttle.  Keep in mind that my boat is
way overweight - the waterline has been raised twice!  The scale at the last
haul out read 20,000 lbs.

I'm really happy with the engine.  As I understand it, the YM series is like
the GM but with a redesigned intake that's supposed to make it quieter. It
is a very quiet, smooth engine.  I went to the recommended 2-1/2" exhaust
when I installed the engine.  It wasn't a very difficult modification.  I
did change the water lift. It was a good thing I did as I found that the ice
box had no insulation between it and the water lift.  It takes a lot less
energy to keep the refrigerator cold now.

The installation was pretty easy and the engine bed didn't require
modification, though I still should put a couple of spacers under the front
engine mounts as they're towards the top of their adjustment.

My only complaint about the yanmar so far is that the exhaust elbow/riser
didn't last very long.  I had to replace it due to plugging from corrosion
after about 18 months.  I don't remember the price but I don't remember it
being too high.

By the way, does anyone have any good suggestions as to where to buy parts
for less $$$ online?  I need to buy a lot of spares for our upcoming trip.

Hope this helps someone in some way.

Rich, Legacy, #360, Los Angeles

On Sat, Jun 18, 2011 at 9:55 AM, Max Soto <maxsoto at gmail.com> wrote:

> Steve, weight is not a concern because the engine I have is heavier than
> any other of my options, but here I do need some extra hp when I have to
> motor on the channels here and wind starts blowing at my nose at +35knt...
> That drops my speed from 5knts to 1.5, and I can't afford to loose the high
> tide....  Regular crossings on the gulf from one side to the other usually
> goes from just two hours to four, so, that's when I really need more power
> from my engine...  I might keep mine and just overhaul it, but if get a good
> deal from the   engines her, I'll go for it!!
>  I usually cruise at 5knts, my engine won't rev more than 2100 under power,
> but maybe, is because my prop has too much pitch. I'm using a two blade
> 14x14...  If I push the engine beyond 1800, some white smoke  will start
> coming out of the exhaust...
> Regards,
> Max
>
>
> 2011/6/18 S Orton <ssorton at hotmail.com>
>
>>  Max,  Being an OLD racer, I would rearrange my options to weight, hours,
>> price and then HP.  With my 5424 I cruise at 6 kts, with a 2 blade folding
>> prop- this is flat water of the Puget Sound.  I really don't know what 60%
>> more HP would do for you as you aren't going to climb your bow wave like the
>> Mc Gregor.  Cheers, Steve O
>>  ------------------------------
>> Date: Sat, 18 Jun 2011 09:31:22 -0600
>> From: maxsoto at gmail.com
>> To: listserve at catalina38.org
>>
>> Subject: Re: [C38] Found a good engine here- Is it too big???
>>
>> Well Joe,
>> My 5424 is a Kubota, and the Yanmar on my previos boat was also using a
>> Kubota block, I really thrust them, but believe me that has been impossible
>> to find used engines like yours.. The only one that I saw was Rich's engine,
>> which I really  regret not buying ....
>> So, I have to deal with whatever is the best option on the market...
>>  Right know, all the options point to Yanmar, which is also a great
>> engine... I will install the best option, by means of HP, hours and price,
>> It could be Yanmar, Westerbeke or Universal, NO VOLVOS!!!  Parts are veeery,
>> veeery expensive, and sometimes are really hard to get !!!!
>> When you told me last time we spoke that you cruise at 6.5, that's when I
>> put my eyes on bigger engines....Do you know what was the size of the
>> original prop that came with your boat? I assume that Macavity came with a
>> regular fixed prop....
>> Will let you know what my findings are....
>>
>> Regards,
>>
>> Max
>>
>> 2011/6/18 Joseph Launie <jlaunie at cox.net>
>>
>> **
>> Max,
>>     All I know about boat engines is that you have to add diesel to the
>> tank from time to time or they won't run. The factory put a Universal M-35 4
>> cylinder in mine (hull 365 - 1990) It is turning a 3 blade max-prop and runs
>> fine with about 32 horsepower. I run at about 6.5 knots at 2200 rpm and burn
>> about .5 gal/hour. I have been told it is a Kabota tractor engine and parts
>> are available around the world. My mechanic says Yanmar has the better
>> marketing but Universal the better engine. Joe Launie/Macavity
>>
>>
>> On 6/17/2011 3:04 PM, Max Soto wrote:
>>
>> That engine does take a lot of space, but nothing more than my current
>> engine...  That's the good thing about larry's engine, is very small and
>> weights about 150 lbs less than mine...
>>
>> Tom, I'm afraid that with a 3" exhaust, the thru hull and the muffler must
>> be custom made, plus I will have to make the hole twice as big and lead a
>> huge hose to the stern.......  Just a tought!
>>
>>
>> Regards,
>>
>> Max
>>
>>
>>
>> 2011/6/17 tdtron at earthlink.net <tdtron at earthlink.net>
>>
>> Hello Larry,
>>
>> What a neat looking engine installation.  Very neat and clean.  Mine never
>> looked that good.
>>
>> One thing I did notice is the open flame arrestor on the throttle body air
>> intake of the engine which tend to be noisy.
>>
>> If you make an air tube to collect the engine intake air from aft in the
>> rear of the engine compartment, you will decrease engine noise
>> considerably.
>>
>> The next time you run your engine, just hold a piece of common home dryer
>> vent hose over the intake flame arrestor and point the open end back
>> toward
>> the steering quadrant and you will see what I mean.
>>
>> I think intake noise is probably the noisiest part of our exhaust muffled
>> engines.  If you make your intake long, you can have a fairly large tube
>> allowing for no restrictive loss of power and still get a noticeable noise
>> reduction.
>>
>> By terminating the hose pointing aft you will send any residual noise away
>> from the cabin.  Any slight turns in the hose will help dampen noise also.
>>
>> If you take me up on this suggestion, you will then have a "to do" project
>> for your obviously otherwise perfect boat.
>>
>> Tom Troncalli
>>
>>
>>
>> > [Original Message]
>> > From: Larry Malmberg <Larrypi at roadrunner.com>
>> > To: <saintpeg at earthlink.net>; Catalina 38 Listserve
>> <listserve at catalina38.org>
>> > Date: 6/17/2011 9:30:53 AM
>> > Subject: Re: [C38] Found a good engine here- Is it too big???
>> >
>>  > WOW that engine take up some space, here is what ours looks like.
>> >
>> >
>> >
>> >
>> >
>> >
>> > Best regards,
>> >
>> > Larry Malmberg
>> > Team Hassle
>>
>>
>>
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>>
>>
>> --
>> Max Soto
>> C38 #198 ESTANCIA
>> Puntarenas, Costa Rica
>>
>>
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>>
>> --
>> Max Soto
>> C38 #198 ESTANCIA
>> Puntarenas, Costa Rica
>>
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>
>
> --
> Max Soto
> C38 #198 ESTANCIA
> Puntarenas, Costa Rica
>
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