Another thread concerning a 9.9 hp got me wondering what to use to
power a boat I will build. It needs to be up to 75 hp.

Does a 4 stroke really give noticeable increase in mpg?
Are 4 strokes really finicky compared to 2 strokes (I mean reliability).

wrote:
Another thread concerning a 9.9 hp got me wondering what to use to
power a boat I will build. It needs to be up to 75 hp.

Does a 4 stroke really give noticeable increase in mpg?
Are 4 strokes really finicky compared to 2 strokes (I mean reliability).


Since the gov't got involved, 2 stroke is no longer available, so it is
a no brainer.

Lew

Duh, where have you been looking? 2 strokes are most certainly
available.

Lew Hodgett wrote:
Since the gov't got involved, 2 stroke is no longer available, so it is
a no brainer.

Duh Lew, I helped put the government in place and so did you if you
voted. Since private industry will never do the socially responsible
thing unless forced by law, and since most consumers are as dumb as
posts, it takes the government to shall we say, guide the stupid to the
correct answers. In this case, outlawing two-stroke engines. Of course
it could just be that I'm all wrong and allowing 1 out of every 5
gallons of gas passing through my two-stroke to go straight into the
lakes un-combusted is really an okay thing for us to be doing.

I understand the newer 2 strokes are fairly clean.

prodigal1 wrote:


Duh Lew, I helped put the government in place and so did you if you
voted. Since private industry will never do the socially responsible
thing unless forced by law, and since most consumers are as dumb as
posts, it takes the government to shall we say, guide the stupid to the
correct answers. In this case, outlawing two-stroke engines. Of course
it could just be that I'm all wrong and allowing 1 out of every 5
gallons of gas passing through my two-stroke to go straight into the
lakes un-combusted is really an okay thing for us to be doing.

You want an argument, change the subject.

Lew

The 4-stroke will give you noticeably better fuel consumption, is a lot
quieter and generally more reliable. The down side is that they are
heavier. That can make a big difference in a dinghy motor but not a lot
when you get above 25HP.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

wrote in message
ups.com...
Another thread concerning a 9.9 hp got me wondering what to use to
power a boat I will build. It needs to be up to 75 hp.

Does a 4 stroke really give noticeable increase in mpg?
Are 4 strokes really finicky compared to 2 strokes (I mean reliability).

2 strokes ae readily available in models that are a couple years old.
These may be a good deal if still under warranty.

Considering the hassles of how a 4 stroke cannot be tilted some ways,
how reliable are they compared to a 2 stroke?
How expensive to repair compared to a 2 stroke?
Considering a cost differential of about $1000 (US), is fuel economy a
real consideration for a 4 stroke?

In article . com,
wrote:

2 strokes ae readily available in models that are a couple years old.
These may be a good deal if still under warranty.

Considering the hassles of how a 4 stroke cannot be tilted some ways,
how reliable are they compared to a 2 stroke?
How expensive to repair compared to a 2 stroke?
Considering a cost differential of about $1000 (US), is fuel economy a
real consideration for a 4 stroke?

Everything that I've seen, heard, and experienced points towards the
4-strokes. The newest two-strokes aren't as bad as the old, but they're
as complex as the 4-strokes and seem to need more maintenance.

A couple of years ago, a rental or charter operation in the Keys
detailed the benefits over the long term in his fleet of small boats in
this newsgroup. One of the unusual benefits I recall was that the
4-strokes lasted at least twice as long -- same boats, same use.

Two strokes have a lot of benefits, but if two stroke technology were
truly as clean and efficient as four strokes, I would expect to see
automobiles switch over, particularly the smallest econoboxes.

The only sorta two-stroke I can think of is the Mazda RX-8 rotary. Now,
THAT's an engine that gives outstanding power to weight! Are there any
rotary outboards?

--
Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's Pages: http://members.dca.net/jerelull/X-Main.html
Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/

:

2 strokes ae readily available in models that are a couple years old.
These may be a good deal if still under warranty.

Make sure you see it work first.

Considering the hassles of how a 4 stroke cannot be tilted some ways,
how reliable are they compared to a 2 stroke?

Both of my two stroke motors need servicing about every two years each. Not
major repairs, but they always seemed to act up just when I really want to
relax, never when I was going to the cabin to work and expected to be going
in-town anyway.

How expensive to repair compared to a 2 stroke?

Never needed to service the two and half year old four stroke, so I can't say.

Considering a cost differential of about $1000 (US), is fuel economy a
real consideration for a 4 stroke?

Oh boy is it. The Johnson two stroke just guzzled gas.

Also you always was having to watch the oil was mixed properly. I lent the
Johnston to my brother and he mixed it too rich 20-1, boy did it smoke. But
to make it worse he also put the mixed gas into my Honda generator.

That was the point when I decide to go all 4 stroke and no mixed gas. Infact
I am not completely converted, I am using eletric motors on my small lake to
get around, but if I buy a gas motor it will be four stroke.

Earl Colby Pottinger

--
I make public email sent to me! Hydrogen Peroxide Rockets, OpenBeos,
SerialTransfer 3.0, RAMDISK, BoatBuilding, DIY TabletPC. What happened to
the time? http://webhome.idirect.com/~earlcp